c68904fe08
Move frontends into src/cli/ and src/mcp/ to separate them from the core library. The MCP server is fully rewritten to import only from the SDK (src/index.ts) — zero direct store.ts/collections.ts/llm.ts access. - src/qmd.ts → src/cli/qmd.ts - src/formatter.ts → src/cli/formatter.ts - src/mcp.ts → src/mcp/server.ts (rewritten to use QMDStore SDK) - New src/maintenance.ts: Maintenance class for CLI housekeeping - SDK gains: getDocumentBody(), getDefaultCollectionNames(), extractSnippet/addLineNumbers/DEFAULT_MULTI_GET_MAX_BYTES exports, getDefaultDbPath re-export, InternalStore type export - package.json bin/scripts updated for new paths - All 692 tests pass
4235 lines
146 KiB
TypeScript
4235 lines
146 KiB
TypeScript
/**
|
||
* QMD Store - Core data access and retrieval functions
|
||
*
|
||
* This module provides all database operations, search functions, and document
|
||
* retrieval for QMD. It returns raw data structures that can be formatted by
|
||
* CLI or MCP consumers.
|
||
*
|
||
* Usage:
|
||
* const store = createStore("/path/to/db.sqlite");
|
||
* // or use default path:
|
||
* const store = createStore();
|
||
*/
|
||
|
||
import { openDatabase, loadSqliteVec } from "./db.js";
|
||
import type { Database } from "./db.js";
|
||
import picomatch from "picomatch";
|
||
import { createHash } from "crypto";
|
||
import { readFileSync, realpathSync, statSync, mkdirSync } from "node:fs";
|
||
// Note: node:path resolve is not imported — we export our own cross-platform resolve()
|
||
import fastGlob from "fast-glob";
|
||
import {
|
||
LlamaCpp,
|
||
getDefaultLlamaCpp,
|
||
formatQueryForEmbedding,
|
||
formatDocForEmbedding,
|
||
withLLMSessionForLlm,
|
||
type LLMSessionOptions,
|
||
type RerankDocument,
|
||
type ILLMSession,
|
||
} from "./llm.js";
|
||
import type {
|
||
NamedCollection,
|
||
Collection,
|
||
CollectionConfig,
|
||
ContextMap,
|
||
} from "./collections.js";
|
||
|
||
// =============================================================================
|
||
// Configuration
|
||
// =============================================================================
|
||
|
||
const HOME = process.env.HOME || "/tmp";
|
||
export const DEFAULT_EMBED_MODEL = "embeddinggemma";
|
||
export const DEFAULT_RERANK_MODEL = "ExpedientFalcon/qwen3-reranker:0.6b-q8_0";
|
||
export const DEFAULT_QUERY_MODEL = "Qwen/Qwen3-1.7B";
|
||
export const DEFAULT_GLOB = "**/*.md";
|
||
export const DEFAULT_MULTI_GET_MAX_BYTES = 10 * 1024; // 10KB
|
||
|
||
// Chunking: 900 tokens per chunk with 15% overlap
|
||
// Increased from 800 to accommodate smart chunking finding natural break points
|
||
export const CHUNK_SIZE_TOKENS = 900;
|
||
export const CHUNK_OVERLAP_TOKENS = Math.floor(CHUNK_SIZE_TOKENS * 0.15); // 135 tokens (15% overlap)
|
||
// Fallback char-based approximation for sync chunking (~4 chars per token)
|
||
export const CHUNK_SIZE_CHARS = CHUNK_SIZE_TOKENS * 4; // 3600 chars
|
||
export const CHUNK_OVERLAP_CHARS = CHUNK_OVERLAP_TOKENS * 4; // 540 chars
|
||
// Search window for finding optimal break points (in tokens, ~200 tokens)
|
||
export const CHUNK_WINDOW_TOKENS = 200;
|
||
export const CHUNK_WINDOW_CHARS = CHUNK_WINDOW_TOKENS * 4; // 800 chars
|
||
|
||
/**
|
||
* Get the LlamaCpp instance for a store — prefers the store's own instance,
|
||
* falls back to the global singleton.
|
||
*/
|
||
function getLlm(store: Store): LlamaCpp {
|
||
return store.llm ?? getDefaultLlamaCpp();
|
||
}
|
||
|
||
// =============================================================================
|
||
// Smart Chunking - Break Point Detection
|
||
// =============================================================================
|
||
|
||
/**
|
||
* A potential break point in the document with a base score indicating quality.
|
||
*/
|
||
export interface BreakPoint {
|
||
pos: number; // character position
|
||
score: number; // base score (higher = better break point)
|
||
type: string; // for debugging: 'h1', 'h2', 'blank', etc.
|
||
}
|
||
|
||
/**
|
||
* A region where a code fence exists (between ``` markers).
|
||
* We should never split inside a code fence.
|
||
*/
|
||
export interface CodeFenceRegion {
|
||
start: number; // position of opening ```
|
||
end: number; // position of closing ``` (or document end if unclosed)
|
||
}
|
||
|
||
/**
|
||
* Patterns for detecting break points in markdown documents.
|
||
* Higher scores indicate better places to split.
|
||
* Scores are spread wide so headings decisively beat lower-quality breaks.
|
||
* Order matters for scoring - more specific patterns first.
|
||
*/
|
||
export const BREAK_PATTERNS: [RegExp, number, string][] = [
|
||
[/\n#{1}(?!#)/g, 100, 'h1'], // # but not ##
|
||
[/\n#{2}(?!#)/g, 90, 'h2'], // ## but not ###
|
||
[/\n#{3}(?!#)/g, 80, 'h3'], // ### but not ####
|
||
[/\n#{4}(?!#)/g, 70, 'h4'], // #### but not #####
|
||
[/\n#{5}(?!#)/g, 60, 'h5'], // ##### but not ######
|
||
[/\n#{6}(?!#)/g, 50, 'h6'], // ######
|
||
[/\n```/g, 80, 'codeblock'], // code block boundary (same as h3)
|
||
[/\n(?:---|\*\*\*|___)\s*\n/g, 60, 'hr'], // horizontal rule
|
||
[/\n\n+/g, 20, 'blank'], // paragraph boundary
|
||
[/\n[-*]\s/g, 5, 'list'], // unordered list item
|
||
[/\n\d+\.\s/g, 5, 'numlist'], // ordered list item
|
||
[/\n/g, 1, 'newline'], // minimal break
|
||
];
|
||
|
||
/**
|
||
* Scan text for all potential break points.
|
||
* Returns sorted array of break points with higher-scoring patterns taking precedence
|
||
* when multiple patterns match the same position.
|
||
*/
|
||
export function scanBreakPoints(text: string): BreakPoint[] {
|
||
const points: BreakPoint[] = [];
|
||
const seen = new Map<number, BreakPoint>(); // pos -> best break point at that pos
|
||
|
||
for (const [pattern, score, type] of BREAK_PATTERNS) {
|
||
for (const match of text.matchAll(pattern)) {
|
||
const pos = match.index!;
|
||
const existing = seen.get(pos);
|
||
// Keep higher score if position already seen
|
||
if (!existing || score > existing.score) {
|
||
const bp = { pos, score, type };
|
||
seen.set(pos, bp);
|
||
}
|
||
}
|
||
}
|
||
|
||
// Convert to array and sort by position
|
||
for (const bp of seen.values()) {
|
||
points.push(bp);
|
||
}
|
||
return points.sort((a, b) => a.pos - b.pos);
|
||
}
|
||
|
||
/**
|
||
* Find all code fence regions in the text.
|
||
* Code fences are delimited by ``` and we should never split inside them.
|
||
*/
|
||
export function findCodeFences(text: string): CodeFenceRegion[] {
|
||
const regions: CodeFenceRegion[] = [];
|
||
const fencePattern = /\n```/g;
|
||
let inFence = false;
|
||
let fenceStart = 0;
|
||
|
||
for (const match of text.matchAll(fencePattern)) {
|
||
if (!inFence) {
|
||
fenceStart = match.index!;
|
||
inFence = true;
|
||
} else {
|
||
regions.push({ start: fenceStart, end: match.index! + match[0].length });
|
||
inFence = false;
|
||
}
|
||
}
|
||
|
||
// Handle unclosed fence - extends to end of document
|
||
if (inFence) {
|
||
regions.push({ start: fenceStart, end: text.length });
|
||
}
|
||
|
||
return regions;
|
||
}
|
||
|
||
/**
|
||
* Check if a position is inside a code fence region.
|
||
*/
|
||
export function isInsideCodeFence(pos: number, fences: CodeFenceRegion[]): boolean {
|
||
return fences.some(f => pos > f.start && pos < f.end);
|
||
}
|
||
|
||
/**
|
||
* Find the best cut position using scored break points with distance decay.
|
||
*
|
||
* Uses squared distance for gentler early decay - headings far back still win
|
||
* over low-quality breaks near the target.
|
||
*
|
||
* @param breakPoints - Pre-scanned break points from scanBreakPoints()
|
||
* @param targetCharPos - The ideal cut position (e.g., maxChars boundary)
|
||
* @param windowChars - How far back to search for break points (default ~200 tokens)
|
||
* @param decayFactor - How much to penalize distance (0.7 = 30% score at window edge)
|
||
* @param codeFences - Code fence regions to avoid splitting inside
|
||
* @returns The best position to cut at
|
||
*/
|
||
export function findBestCutoff(
|
||
breakPoints: BreakPoint[],
|
||
targetCharPos: number,
|
||
windowChars: number = CHUNK_WINDOW_CHARS,
|
||
decayFactor: number = 0.7,
|
||
codeFences: CodeFenceRegion[] = []
|
||
): number {
|
||
const windowStart = targetCharPos - windowChars;
|
||
let bestScore = -1;
|
||
let bestPos = targetCharPos;
|
||
|
||
for (const bp of breakPoints) {
|
||
if (bp.pos < windowStart) continue;
|
||
if (bp.pos > targetCharPos) break; // sorted, so we can stop
|
||
|
||
// Skip break points inside code fences
|
||
if (isInsideCodeFence(bp.pos, codeFences)) continue;
|
||
|
||
const distance = targetCharPos - bp.pos;
|
||
// Squared distance decay: gentle early, steep late
|
||
// At target: multiplier = 1.0
|
||
// At 25% back: multiplier = 0.956
|
||
// At 50% back: multiplier = 0.825
|
||
// At 75% back: multiplier = 0.606
|
||
// At window edge: multiplier = 0.3
|
||
const normalizedDist = distance / windowChars;
|
||
const multiplier = 1.0 - (normalizedDist * normalizedDist) * decayFactor;
|
||
const finalScore = bp.score * multiplier;
|
||
|
||
if (finalScore > bestScore) {
|
||
bestScore = finalScore;
|
||
bestPos = bp.pos;
|
||
}
|
||
}
|
||
|
||
return bestPos;
|
||
}
|
||
|
||
// Hybrid query: strong BM25 signal detection thresholds
|
||
// Skip expensive LLM expansion when top result is strong AND clearly separated from runner-up
|
||
export const STRONG_SIGNAL_MIN_SCORE = 0.85;
|
||
export const STRONG_SIGNAL_MIN_GAP = 0.15;
|
||
// Max candidates to pass to reranker — balances quality vs latency.
|
||
// 40 keeps rank 31-40 visible to the reranker (matters for recall on broad queries).
|
||
export const RERANK_CANDIDATE_LIMIT = 40;
|
||
|
||
/**
|
||
* A typed query expansion result. Decoupled from llm.ts internal Queryable —
|
||
* same shape, but store.ts owns its own public API type.
|
||
*
|
||
* - lex: keyword variant → routes to FTS only
|
||
* - vec: semantic variant → routes to vector only
|
||
* - hyde: hypothetical document → routes to vector only
|
||
*/
|
||
export type ExpandedQuery = {
|
||
type: 'lex' | 'vec' | 'hyde';
|
||
query: string;
|
||
/** Optional line number for error reporting (CLI parser) */
|
||
line?: number;
|
||
};
|
||
|
||
// =============================================================================
|
||
// Path utilities
|
||
// =============================================================================
|
||
|
||
export function homedir(): string {
|
||
return HOME;
|
||
}
|
||
|
||
/**
|
||
* Check if a path is absolute.
|
||
* Supports:
|
||
* - Unix paths: /path/to/file
|
||
* - Windows native: C:\path or C:/path
|
||
* - Git Bash: /c/path or /C/path (C-Z drives, excluding A/B floppy drives)
|
||
*
|
||
* Note: /c without trailing slash is treated as Unix path (directory named "c"),
|
||
* while /c/ or /c/path are treated as Git Bash paths (C: drive).
|
||
*/
|
||
export function isAbsolutePath(path: string): boolean {
|
||
if (!path) return false;
|
||
|
||
// Unix absolute path
|
||
if (path.startsWith('/')) {
|
||
// Check if it's a Git Bash style path like /c/ or /c/Users (C-Z only, not A or B)
|
||
// Requires path[2] === '/' to distinguish from Unix paths like /c or /cache
|
||
if (path.length >= 3 && path[2] === '/') {
|
||
const driveLetter = path[1];
|
||
if (driveLetter && /[c-zC-Z]/.test(driveLetter)) {
|
||
return true;
|
||
}
|
||
}
|
||
// Any other path starting with / is Unix absolute
|
||
return true;
|
||
}
|
||
|
||
// Windows native path: C:\ or C:/ (any letter A-Z)
|
||
if (path.length >= 2 && /[a-zA-Z]/.test(path[0]!) && path[1] === ':') {
|
||
return true;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
/**
|
||
* Normalize path separators to forward slashes.
|
||
* Converts Windows backslashes to forward slashes.
|
||
*/
|
||
export function normalizePathSeparators(path: string): string {
|
||
return path.replace(/\\/g, '/');
|
||
}
|
||
|
||
/**
|
||
* Get the relative path from a prefix.
|
||
* Returns null if path is not under prefix.
|
||
* Returns empty string if path equals prefix.
|
||
*/
|
||
export function getRelativePathFromPrefix(path: string, prefix: string): string | null {
|
||
// Empty prefix is invalid
|
||
if (!prefix) {
|
||
return null;
|
||
}
|
||
|
||
const normalizedPath = normalizePathSeparators(path);
|
||
const normalizedPrefix = normalizePathSeparators(prefix);
|
||
|
||
// Ensure prefix ends with / for proper matching
|
||
const prefixWithSlash = !normalizedPrefix.endsWith('/')
|
||
? normalizedPrefix + '/'
|
||
: normalizedPrefix;
|
||
|
||
// Exact match
|
||
if (normalizedPath === normalizedPrefix) {
|
||
return '';
|
||
}
|
||
|
||
// Check if path starts with prefix
|
||
if (normalizedPath.startsWith(prefixWithSlash)) {
|
||
return normalizedPath.slice(prefixWithSlash.length);
|
||
}
|
||
|
||
return null;
|
||
}
|
||
|
||
export function resolve(...paths: string[]): string {
|
||
if (paths.length === 0) {
|
||
throw new Error("resolve: at least one path segment is required");
|
||
}
|
||
|
||
// Normalize all paths to use forward slashes
|
||
const normalizedPaths = paths.map(normalizePathSeparators);
|
||
|
||
let result = '';
|
||
let windowsDrive = '';
|
||
|
||
// Check if first path is absolute
|
||
const firstPath = normalizedPaths[0]!;
|
||
if (isAbsolutePath(firstPath)) {
|
||
result = firstPath;
|
||
|
||
// Extract Windows drive letter if present
|
||
if (firstPath.length >= 2 && /[a-zA-Z]/.test(firstPath[0]!) && firstPath[1] === ':') {
|
||
windowsDrive = firstPath.slice(0, 2);
|
||
result = firstPath.slice(2);
|
||
} else if (firstPath.startsWith('/') && firstPath.length >= 3 && firstPath[2] === '/') {
|
||
// Git Bash style: /c/ -> C: (C-Z drives only, not A or B)
|
||
const driveLetter = firstPath[1];
|
||
if (driveLetter && /[c-zC-Z]/.test(driveLetter)) {
|
||
windowsDrive = driveLetter.toUpperCase() + ':';
|
||
result = firstPath.slice(2);
|
||
}
|
||
}
|
||
} else {
|
||
// Start with PWD or cwd, then append the first relative path
|
||
const pwd = normalizePathSeparators(process.env.PWD || process.cwd());
|
||
|
||
// Extract Windows drive from PWD if present
|
||
if (pwd.length >= 2 && /[a-zA-Z]/.test(pwd[0]!) && pwd[1] === ':') {
|
||
windowsDrive = pwd.slice(0, 2);
|
||
result = pwd.slice(2) + '/' + firstPath;
|
||
} else {
|
||
result = pwd + '/' + firstPath;
|
||
}
|
||
}
|
||
|
||
// Process remaining paths
|
||
for (let i = 1; i < normalizedPaths.length; i++) {
|
||
const p = normalizedPaths[i]!;
|
||
if (isAbsolutePath(p)) {
|
||
// Absolute path replaces everything
|
||
result = p;
|
||
|
||
// Update Windows drive if present
|
||
if (p.length >= 2 && /[a-zA-Z]/.test(p[0]!) && p[1] === ':') {
|
||
windowsDrive = p.slice(0, 2);
|
||
result = p.slice(2);
|
||
} else if (p.startsWith('/') && p.length >= 3 && p[2] === '/') {
|
||
// Git Bash style (C-Z drives only, not A or B)
|
||
const driveLetter = p[1];
|
||
if (driveLetter && /[c-zC-Z]/.test(driveLetter)) {
|
||
windowsDrive = driveLetter.toUpperCase() + ':';
|
||
result = p.slice(2);
|
||
} else {
|
||
windowsDrive = '';
|
||
}
|
||
} else {
|
||
windowsDrive = '';
|
||
}
|
||
} else {
|
||
// Relative path - append
|
||
result = result + '/' + p;
|
||
}
|
||
}
|
||
|
||
// Normalize . and .. components
|
||
const parts = result.split('/').filter(Boolean);
|
||
const normalized: string[] = [];
|
||
for (const part of parts) {
|
||
if (part === '..') {
|
||
normalized.pop();
|
||
} else if (part !== '.') {
|
||
normalized.push(part);
|
||
}
|
||
}
|
||
|
||
// Build final path
|
||
const finalPath = '/' + normalized.join('/');
|
||
|
||
// Prepend Windows drive if present
|
||
if (windowsDrive) {
|
||
return windowsDrive + finalPath;
|
||
}
|
||
|
||
return finalPath;
|
||
}
|
||
|
||
// Flag to indicate production mode (set by qmd.ts at startup)
|
||
let _productionMode = false;
|
||
|
||
export function enableProductionMode(): void {
|
||
_productionMode = true;
|
||
}
|
||
|
||
export function getDefaultDbPath(indexName: string = "index"): string {
|
||
// Always allow override via INDEX_PATH (for testing)
|
||
if (process.env.INDEX_PATH) {
|
||
return process.env.INDEX_PATH;
|
||
}
|
||
|
||
// In non-production mode (tests), require explicit path
|
||
if (!_productionMode) {
|
||
throw new Error(
|
||
"Database path not set. Tests must set INDEX_PATH env var or use createStore() with explicit path. " +
|
||
"This prevents tests from accidentally writing to the global index."
|
||
);
|
||
}
|
||
|
||
const cacheDir = process.env.XDG_CACHE_HOME || resolve(homedir(), ".cache");
|
||
const qmdCacheDir = resolve(cacheDir, "qmd");
|
||
try { mkdirSync(qmdCacheDir, { recursive: true }); } catch { }
|
||
return resolve(qmdCacheDir, `${indexName}.sqlite`);
|
||
}
|
||
|
||
export function getPwd(): string {
|
||
return process.env.PWD || process.cwd();
|
||
}
|
||
|
||
export function getRealPath(path: string): string {
|
||
try {
|
||
return realpathSync(path);
|
||
} catch {
|
||
return resolve(path);
|
||
}
|
||
}
|
||
|
||
// =============================================================================
|
||
// Virtual Path Utilities (qmd://)
|
||
// =============================================================================
|
||
|
||
export type VirtualPath = {
|
||
collectionName: string;
|
||
path: string; // relative path within collection
|
||
};
|
||
|
||
/**
|
||
* Normalize explicit virtual path formats to standard qmd:// format.
|
||
* Only handles paths that are already explicitly virtual:
|
||
* - qmd://collection/path.md (already normalized)
|
||
* - qmd:////collection/path.md (extra slashes - normalize)
|
||
* - //collection/path.md (missing qmd: prefix - add it)
|
||
*
|
||
* Does NOT handle:
|
||
* - collection/path.md (bare paths - could be filesystem relative)
|
||
* - :linenum suffix (should be parsed separately before calling this)
|
||
*/
|
||
export function normalizeVirtualPath(input: string): string {
|
||
let path = input.trim();
|
||
|
||
// Handle qmd:// with extra slashes: qmd:////collection/path -> qmd://collection/path
|
||
if (path.startsWith('qmd:')) {
|
||
// Remove qmd: prefix and normalize slashes
|
||
path = path.slice(4);
|
||
// Remove leading slashes and re-add exactly two
|
||
path = path.replace(/^\/+/, '');
|
||
return `qmd://${path}`;
|
||
}
|
||
|
||
// Handle //collection/path (missing qmd: prefix)
|
||
if (path.startsWith('//')) {
|
||
path = path.replace(/^\/+/, '');
|
||
return `qmd://${path}`;
|
||
}
|
||
|
||
// Return as-is for other cases (filesystem paths, docids, bare collection/path, etc.)
|
||
return path;
|
||
}
|
||
|
||
/**
|
||
* Parse a virtual path like "qmd://collection-name/path/to/file.md"
|
||
* into its components.
|
||
* Also supports collection root: "qmd://collection-name/" or "qmd://collection-name"
|
||
*/
|
||
export function parseVirtualPath(virtualPath: string): VirtualPath | null {
|
||
// Normalize the path first
|
||
const normalized = normalizeVirtualPath(virtualPath);
|
||
|
||
// Match: qmd://collection-name[/optional-path]
|
||
// Allows: qmd://name, qmd://name/, qmd://name/path
|
||
const match = normalized.match(/^qmd:\/\/([^\/]+)\/?(.*)$/);
|
||
if (!match?.[1]) return null;
|
||
return {
|
||
collectionName: match[1],
|
||
path: match[2] ?? '', // Empty string for collection root
|
||
};
|
||
}
|
||
|
||
/**
|
||
* Build a virtual path from collection name and relative path.
|
||
*/
|
||
export function buildVirtualPath(collectionName: string, path: string): string {
|
||
return `qmd://${collectionName}/${path}`;
|
||
}
|
||
|
||
/**
|
||
* Check if a path is explicitly a virtual path.
|
||
* Only recognizes explicit virtual path formats:
|
||
* - qmd://collection/path.md
|
||
* - //collection/path.md
|
||
*
|
||
* Does NOT consider bare collection/path.md as virtual - that should be
|
||
* handled separately by checking if the first component is a collection name.
|
||
*/
|
||
export function isVirtualPath(path: string): boolean {
|
||
const trimmed = path.trim();
|
||
|
||
// Explicit qmd:// prefix (with any number of slashes)
|
||
if (trimmed.startsWith('qmd:')) return true;
|
||
|
||
// //collection/path format (missing qmd: prefix)
|
||
if (trimmed.startsWith('//')) return true;
|
||
|
||
return false;
|
||
}
|
||
|
||
/**
|
||
* Resolve a virtual path to absolute filesystem path.
|
||
*/
|
||
export function resolveVirtualPath(db: Database, virtualPath: string): string | null {
|
||
const parsed = parseVirtualPath(virtualPath);
|
||
if (!parsed) return null;
|
||
|
||
const coll = getCollectionByName(db, parsed.collectionName);
|
||
if (!coll) return null;
|
||
|
||
return resolve(coll.pwd, parsed.path);
|
||
}
|
||
|
||
/**
|
||
* Convert an absolute filesystem path to a virtual path.
|
||
* Returns null if the file is not in any indexed collection.
|
||
*/
|
||
export function toVirtualPath(db: Database, absolutePath: string): string | null {
|
||
// Get all collections from DB
|
||
const collections = getStoreCollections(db);
|
||
|
||
// Find which collection this absolute path belongs to
|
||
for (const coll of collections) {
|
||
if (absolutePath.startsWith(coll.path + '/') || absolutePath === coll.path) {
|
||
// Extract relative path
|
||
const relativePath = absolutePath.startsWith(coll.path + '/')
|
||
? absolutePath.slice(coll.path.length + 1)
|
||
: '';
|
||
|
||
// Verify this document exists in the database
|
||
const doc = db.prepare(`
|
||
SELECT d.path
|
||
FROM documents d
|
||
WHERE d.collection = ? AND d.path = ? AND d.active = 1
|
||
LIMIT 1
|
||
`).get(coll.name, relativePath) as { path: string } | null;
|
||
|
||
if (doc) {
|
||
return buildVirtualPath(coll.name, relativePath);
|
||
}
|
||
}
|
||
}
|
||
|
||
return null;
|
||
}
|
||
|
||
// =============================================================================
|
||
// Database initialization
|
||
// =============================================================================
|
||
|
||
|
||
function createSqliteVecUnavailableError(reason: string): Error {
|
||
return new Error(
|
||
"sqlite-vec extension is unavailable. " +
|
||
`${reason}. ` +
|
||
"Install Homebrew SQLite so the sqlite-vec extension can be loaded, " +
|
||
"and set BREW_PREFIX if Homebrew is installed in a non-standard location."
|
||
);
|
||
}
|
||
|
||
function getErrorMessage(err: unknown): string {
|
||
return err instanceof Error ? err.message : String(err);
|
||
}
|
||
|
||
export function verifySqliteVecLoaded(db: Database): void {
|
||
try {
|
||
const row = db.prepare(`SELECT vec_version() AS version`).get() as { version?: string } | null;
|
||
if (!row?.version || typeof row.version !== "string") {
|
||
throw new Error("vec_version() returned no version");
|
||
}
|
||
} catch (err) {
|
||
const message = getErrorMessage(err);
|
||
throw createSqliteVecUnavailableError(`sqlite-vec probe failed (${message})`);
|
||
}
|
||
}
|
||
|
||
let _sqliteVecAvailable: boolean | null = null;
|
||
|
||
function initializeDatabase(db: Database): void {
|
||
try {
|
||
loadSqliteVec(db);
|
||
verifySqliteVecLoaded(db);
|
||
_sqliteVecAvailable = true;
|
||
} catch {
|
||
// sqlite-vec is optional — vector search won't work but FTS is fine
|
||
_sqliteVecAvailable = false;
|
||
}
|
||
db.exec("PRAGMA journal_mode = WAL");
|
||
db.exec("PRAGMA foreign_keys = ON");
|
||
|
||
// Drop legacy tables that are now managed in YAML
|
||
db.exec(`DROP TABLE IF EXISTS path_contexts`);
|
||
db.exec(`DROP TABLE IF EXISTS collections`);
|
||
|
||
// Content-addressable storage - the source of truth for document content
|
||
db.exec(`
|
||
CREATE TABLE IF NOT EXISTS content (
|
||
hash TEXT PRIMARY KEY,
|
||
doc TEXT NOT NULL,
|
||
created_at TEXT NOT NULL
|
||
)
|
||
`);
|
||
|
||
// Documents table - file system layer mapping virtual paths to content hashes
|
||
// Collections are now managed in ~/.config/qmd/index.yml
|
||
db.exec(`
|
||
CREATE TABLE IF NOT EXISTS documents (
|
||
id INTEGER PRIMARY KEY AUTOINCREMENT,
|
||
collection TEXT NOT NULL,
|
||
path TEXT NOT NULL,
|
||
title TEXT NOT NULL,
|
||
hash TEXT NOT NULL,
|
||
created_at TEXT NOT NULL,
|
||
modified_at TEXT NOT NULL,
|
||
active INTEGER NOT NULL DEFAULT 1,
|
||
FOREIGN KEY (hash) REFERENCES content(hash) ON DELETE CASCADE,
|
||
UNIQUE(collection, path)
|
||
)
|
||
`);
|
||
|
||
db.exec(`CREATE INDEX IF NOT EXISTS idx_documents_collection ON documents(collection, active)`);
|
||
db.exec(`CREATE INDEX IF NOT EXISTS idx_documents_hash ON documents(hash)`);
|
||
db.exec(`CREATE INDEX IF NOT EXISTS idx_documents_path ON documents(path, active)`);
|
||
|
||
// Cache table for LLM API calls
|
||
db.exec(`
|
||
CREATE TABLE IF NOT EXISTS llm_cache (
|
||
hash TEXT PRIMARY KEY,
|
||
result TEXT NOT NULL,
|
||
created_at TEXT NOT NULL
|
||
)
|
||
`);
|
||
|
||
// Content vectors
|
||
const cvInfo = db.prepare(`PRAGMA table_info(content_vectors)`).all() as { name: string }[];
|
||
const hasSeqColumn = cvInfo.some(col => col.name === 'seq');
|
||
if (cvInfo.length > 0 && !hasSeqColumn) {
|
||
db.exec(`DROP TABLE IF EXISTS content_vectors`);
|
||
db.exec(`DROP TABLE IF EXISTS vectors_vec`);
|
||
}
|
||
db.exec(`
|
||
CREATE TABLE IF NOT EXISTS content_vectors (
|
||
hash TEXT NOT NULL,
|
||
seq INTEGER NOT NULL DEFAULT 0,
|
||
pos INTEGER NOT NULL DEFAULT 0,
|
||
model TEXT NOT NULL,
|
||
embedded_at TEXT NOT NULL,
|
||
PRIMARY KEY (hash, seq)
|
||
)
|
||
`);
|
||
|
||
// Store collections — makes the DB self-contained (no external config needed)
|
||
db.exec(`
|
||
CREATE TABLE IF NOT EXISTS store_collections (
|
||
name TEXT PRIMARY KEY,
|
||
path TEXT NOT NULL,
|
||
pattern TEXT NOT NULL DEFAULT '**/*.md',
|
||
ignore_patterns TEXT,
|
||
include_by_default INTEGER DEFAULT 1,
|
||
update_command TEXT,
|
||
context TEXT
|
||
)
|
||
`);
|
||
|
||
// Store config — key-value metadata (e.g. config_hash for sync optimization)
|
||
db.exec(`
|
||
CREATE TABLE IF NOT EXISTS store_config (
|
||
key TEXT PRIMARY KEY,
|
||
value TEXT
|
||
)
|
||
`);
|
||
|
||
// FTS - index filepath (collection/path), title, and content
|
||
db.exec(`
|
||
CREATE VIRTUAL TABLE IF NOT EXISTS documents_fts USING fts5(
|
||
filepath, title, body,
|
||
tokenize='porter unicode61'
|
||
)
|
||
`);
|
||
|
||
// Triggers to keep FTS in sync
|
||
db.exec(`
|
||
CREATE TRIGGER IF NOT EXISTS documents_ai AFTER INSERT ON documents
|
||
WHEN new.active = 1
|
||
BEGIN
|
||
INSERT INTO documents_fts(rowid, filepath, title, body)
|
||
SELECT
|
||
new.id,
|
||
new.collection || '/' || new.path,
|
||
new.title,
|
||
(SELECT doc FROM content WHERE hash = new.hash)
|
||
WHERE new.active = 1;
|
||
END
|
||
`);
|
||
|
||
db.exec(`
|
||
CREATE TRIGGER IF NOT EXISTS documents_ad AFTER DELETE ON documents BEGIN
|
||
DELETE FROM documents_fts WHERE rowid = old.id;
|
||
END
|
||
`);
|
||
|
||
db.exec(`
|
||
CREATE TRIGGER IF NOT EXISTS documents_au AFTER UPDATE ON documents
|
||
BEGIN
|
||
-- Delete from FTS if no longer active
|
||
DELETE FROM documents_fts WHERE rowid = old.id AND new.active = 0;
|
||
|
||
-- Update FTS if still/newly active
|
||
INSERT OR REPLACE INTO documents_fts(rowid, filepath, title, body)
|
||
SELECT
|
||
new.id,
|
||
new.collection || '/' || new.path,
|
||
new.title,
|
||
(SELECT doc FROM content WHERE hash = new.hash)
|
||
WHERE new.active = 1;
|
||
END
|
||
`);
|
||
}
|
||
|
||
// =============================================================================
|
||
// Store Collections — DB accessor functions
|
||
// =============================================================================
|
||
|
||
type StoreCollectionRow = {
|
||
name: string;
|
||
path: string;
|
||
pattern: string;
|
||
ignore_patterns: string | null;
|
||
include_by_default: number;
|
||
update_command: string | null;
|
||
context: string | null;
|
||
};
|
||
|
||
function rowToNamedCollection(row: StoreCollectionRow): NamedCollection {
|
||
return {
|
||
name: row.name,
|
||
path: row.path,
|
||
pattern: row.pattern,
|
||
...(row.ignore_patterns ? { ignore: JSON.parse(row.ignore_patterns) as string[] } : {}),
|
||
...(row.include_by_default === 0 ? { includeByDefault: false } : {}),
|
||
...(row.update_command ? { update: row.update_command } : {}),
|
||
...(row.context ? { context: JSON.parse(row.context) as ContextMap } : {}),
|
||
};
|
||
}
|
||
|
||
export function getStoreCollections(db: Database): NamedCollection[] {
|
||
const rows = db.prepare(`SELECT * FROM store_collections`).all() as StoreCollectionRow[];
|
||
return rows.map(rowToNamedCollection);
|
||
}
|
||
|
||
export function getStoreCollection(db: Database, name: string): NamedCollection | null {
|
||
const row = db.prepare(`SELECT * FROM store_collections WHERE name = ?`).get(name) as StoreCollectionRow | null | undefined;
|
||
if (row == null) return null;
|
||
return rowToNamedCollection(row);
|
||
}
|
||
|
||
export function getStoreGlobalContext(db: Database): string | undefined {
|
||
const row = db.prepare(`SELECT value FROM store_config WHERE key = 'global_context'`).get() as { value: string } | null | undefined;
|
||
if (row == null) return undefined;
|
||
return row.value || undefined;
|
||
}
|
||
|
||
export function getStoreContexts(db: Database): Array<{ collection: string; path: string; context: string }> {
|
||
const results: Array<{ collection: string; path: string; context: string }> = [];
|
||
|
||
// Global context
|
||
const globalCtx = getStoreGlobalContext(db);
|
||
if (globalCtx) {
|
||
results.push({ collection: "*", path: "/", context: globalCtx });
|
||
}
|
||
|
||
// Collection contexts
|
||
const rows = db.prepare(`SELECT name, context FROM store_collections WHERE context IS NOT NULL`).all() as { name: string; context: string }[];
|
||
for (const row of rows) {
|
||
const ctxMap = JSON.parse(row.context) as ContextMap;
|
||
for (const [path, context] of Object.entries(ctxMap)) {
|
||
results.push({ collection: row.name, path, context });
|
||
}
|
||
}
|
||
|
||
return results;
|
||
}
|
||
|
||
export function upsertStoreCollection(db: Database, name: string, collection: Omit<Collection, 'pattern'> & { pattern?: string }): void {
|
||
db.prepare(`
|
||
INSERT INTO store_collections (name, path, pattern, ignore_patterns, include_by_default, update_command, context)
|
||
VALUES (?, ?, ?, ?, ?, ?, ?)
|
||
ON CONFLICT(name) DO UPDATE SET
|
||
path = excluded.path,
|
||
pattern = excluded.pattern,
|
||
ignore_patterns = excluded.ignore_patterns,
|
||
include_by_default = excluded.include_by_default,
|
||
update_command = excluded.update_command,
|
||
context = excluded.context
|
||
`).run(
|
||
name,
|
||
collection.path,
|
||
collection.pattern || '**/*.md',
|
||
collection.ignore ? JSON.stringify(collection.ignore) : null,
|
||
collection.includeByDefault === false ? 0 : 1,
|
||
collection.update || null,
|
||
collection.context ? JSON.stringify(collection.context) : null,
|
||
);
|
||
}
|
||
|
||
export function deleteStoreCollection(db: Database, name: string): boolean {
|
||
const result = db.prepare(`DELETE FROM store_collections WHERE name = ?`).run(name);
|
||
return result.changes > 0;
|
||
}
|
||
|
||
export function renameStoreCollection(db: Database, oldName: string, newName: string): boolean {
|
||
// Check target doesn't exist
|
||
const existing = db.prepare(`SELECT name FROM store_collections WHERE name = ?`).get(newName) as { name: string } | null | undefined;
|
||
if (existing != null) {
|
||
throw new Error(`Collection '${newName}' already exists`);
|
||
}
|
||
|
||
const result = db.prepare(`UPDATE store_collections SET name = ? WHERE name = ?`).run(newName, oldName);
|
||
return result.changes > 0;
|
||
}
|
||
|
||
export function updateStoreContext(db: Database, collectionName: string, path: string, text: string): boolean {
|
||
const row = db.prepare(`SELECT context FROM store_collections WHERE name = ?`).get(collectionName) as { context: string | null } | null | undefined;
|
||
if (row == null) return false;
|
||
|
||
const ctxMap: ContextMap = row.context ? JSON.parse(row.context) : {};
|
||
ctxMap[path] = text;
|
||
db.prepare(`UPDATE store_collections SET context = ? WHERE name = ?`).run(JSON.stringify(ctxMap), collectionName);
|
||
return true;
|
||
}
|
||
|
||
export function removeStoreContext(db: Database, collectionName: string, path: string): boolean {
|
||
const row = db.prepare(`SELECT context FROM store_collections WHERE name = ?`).get(collectionName) as { context: string | null } | null | undefined;
|
||
if (row == null) return false;
|
||
if (!row.context) return false;
|
||
|
||
const ctxMap: ContextMap = JSON.parse(row.context);
|
||
if (!(path in ctxMap)) return false;
|
||
|
||
delete ctxMap[path];
|
||
const newCtx = Object.keys(ctxMap).length > 0 ? JSON.stringify(ctxMap) : null;
|
||
db.prepare(`UPDATE store_collections SET context = ? WHERE name = ?`).run(newCtx, collectionName);
|
||
return true;
|
||
}
|
||
|
||
export function setStoreGlobalContext(db: Database, value: string | undefined): void {
|
||
if (value === undefined) {
|
||
db.prepare(`DELETE FROM store_config WHERE key = 'global_context'`).run();
|
||
} else {
|
||
db.prepare(`INSERT INTO store_config (key, value) VALUES ('global_context', ?) ON CONFLICT(key) DO UPDATE SET value = excluded.value`).run(value);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Sync external config (YAML/inline) into SQLite store_collections.
|
||
* External config always wins. Skips sync if config hash hasn't changed.
|
||
*/
|
||
export function syncConfigToDb(db: Database, config: CollectionConfig): void {
|
||
// Check config hash — skip sync if unchanged
|
||
const configJson = JSON.stringify(config);
|
||
const hash = createHash('sha256').update(configJson).digest('hex');
|
||
|
||
const existingHash = db.prepare(`SELECT value FROM store_config WHERE key = 'config_hash'`).get() as { value: string } | null | undefined;
|
||
if (existingHash != null && existingHash.value === hash) {
|
||
return; // Config unchanged, skip sync
|
||
}
|
||
|
||
// Sync collections
|
||
const configNames = new Set(Object.keys(config.collections));
|
||
|
||
for (const [name, coll] of Object.entries(config.collections)) {
|
||
upsertStoreCollection(db, name, coll);
|
||
}
|
||
|
||
// Delete collections not in config
|
||
const dbCollections = db.prepare(`SELECT name FROM store_collections`).all() as { name: string }[];
|
||
for (const row of dbCollections) {
|
||
if (!configNames.has(row.name)) {
|
||
db.prepare(`DELETE FROM store_collections WHERE name = ?`).run(row.name);
|
||
}
|
||
}
|
||
|
||
// Sync global context
|
||
if (config.global_context !== undefined) {
|
||
setStoreGlobalContext(db, config.global_context);
|
||
} else {
|
||
setStoreGlobalContext(db, undefined);
|
||
}
|
||
|
||
// Save config hash
|
||
db.prepare(`INSERT INTO store_config (key, value) VALUES ('config_hash', ?) ON CONFLICT(key) DO UPDATE SET value = excluded.value`).run(hash);
|
||
}
|
||
|
||
|
||
export function isSqliteVecAvailable(): boolean {
|
||
return _sqliteVecAvailable === true;
|
||
}
|
||
|
||
function ensureVecTableInternal(db: Database, dimensions: number): void {
|
||
if (!_sqliteVecAvailable) {
|
||
throw new Error("sqlite-vec is not available. Vector operations require a SQLite build with extension loading support.");
|
||
}
|
||
const tableInfo = db.prepare(`SELECT sql FROM sqlite_master WHERE type='table' AND name='vectors_vec'`).get() as { sql: string } | null;
|
||
if (tableInfo) {
|
||
const match = tableInfo.sql.match(/float\[(\d+)\]/);
|
||
const hasHashSeq = tableInfo.sql.includes('hash_seq');
|
||
const hasCosine = tableInfo.sql.includes('distance_metric=cosine');
|
||
const existingDims = match?.[1] ? parseInt(match[1], 10) : null;
|
||
if (existingDims === dimensions && hasHashSeq && hasCosine) return;
|
||
// Table exists but wrong schema - need to rebuild
|
||
db.exec("DROP TABLE IF EXISTS vectors_vec");
|
||
}
|
||
db.exec(`CREATE VIRTUAL TABLE vectors_vec USING vec0(hash_seq TEXT PRIMARY KEY, embedding float[${dimensions}] distance_metric=cosine)`);
|
||
}
|
||
|
||
// =============================================================================
|
||
// Store Factory
|
||
// =============================================================================
|
||
|
||
export type Store = {
|
||
db: Database;
|
||
dbPath: string;
|
||
/** Optional LlamaCpp instance for this store (overrides the global singleton) */
|
||
llm?: LlamaCpp;
|
||
close: () => void;
|
||
ensureVecTable: (dimensions: number) => void;
|
||
|
||
// Index health
|
||
getHashesNeedingEmbedding: () => number;
|
||
getIndexHealth: () => IndexHealthInfo;
|
||
getStatus: () => IndexStatus;
|
||
|
||
// Caching
|
||
getCacheKey: typeof getCacheKey;
|
||
getCachedResult: (cacheKey: string) => string | null;
|
||
setCachedResult: (cacheKey: string, result: string) => void;
|
||
clearCache: () => void;
|
||
|
||
// Cleanup and maintenance
|
||
deleteLLMCache: () => number;
|
||
deleteInactiveDocuments: () => number;
|
||
cleanupOrphanedContent: () => number;
|
||
cleanupOrphanedVectors: () => number;
|
||
vacuumDatabase: () => void;
|
||
|
||
// Context
|
||
getContextForFile: (filepath: string) => string | null;
|
||
getContextForPath: (collectionName: string, path: string) => string | null;
|
||
getCollectionByName: (name: string) => { name: string; pwd: string; glob_pattern: string } | null;
|
||
getCollectionsWithoutContext: () => { name: string; pwd: string; doc_count: number }[];
|
||
getTopLevelPathsWithoutContext: (collectionName: string) => string[];
|
||
|
||
// Virtual paths
|
||
parseVirtualPath: typeof parseVirtualPath;
|
||
buildVirtualPath: typeof buildVirtualPath;
|
||
isVirtualPath: typeof isVirtualPath;
|
||
resolveVirtualPath: (virtualPath: string) => string | null;
|
||
toVirtualPath: (absolutePath: string) => string | null;
|
||
|
||
// Search
|
||
searchFTS: (query: string, limit?: number, collectionName?: string) => SearchResult[];
|
||
searchVec: (query: string, model: string, limit?: number, collectionName?: string, session?: ILLMSession, precomputedEmbedding?: number[]) => Promise<SearchResult[]>;
|
||
|
||
// Query expansion & reranking
|
||
expandQuery: (query: string, model?: string, intent?: string) => Promise<ExpandedQuery[]>;
|
||
rerank: (query: string, documents: { file: string; text: string }[], model?: string, intent?: string) => Promise<{ file: string; score: number }[]>;
|
||
|
||
// Document retrieval
|
||
findDocument: (filename: string, options?: { includeBody?: boolean }) => DocumentResult | DocumentNotFound;
|
||
getDocumentBody: (doc: DocumentResult | { filepath: string }, fromLine?: number, maxLines?: number) => string | null;
|
||
findDocuments: (pattern: string, options?: { includeBody?: boolean; maxBytes?: number }) => { docs: MultiGetResult[]; errors: string[] };
|
||
|
||
// Fuzzy matching and docid lookup
|
||
findSimilarFiles: (query: string, maxDistance?: number, limit?: number) => string[];
|
||
matchFilesByGlob: (pattern: string) => { filepath: string; displayPath: string; bodyLength: number }[];
|
||
findDocumentByDocid: (docid: string) => { filepath: string; hash: string } | null;
|
||
|
||
// Document indexing operations
|
||
insertContent: (hash: string, content: string, createdAt: string) => void;
|
||
insertDocument: (collectionName: string, path: string, title: string, hash: string, createdAt: string, modifiedAt: string) => void;
|
||
findActiveDocument: (collectionName: string, path: string) => { id: number; hash: string; title: string } | null;
|
||
updateDocumentTitle: (documentId: number, title: string, modifiedAt: string) => void;
|
||
updateDocument: (documentId: number, title: string, hash: string, modifiedAt: string) => void;
|
||
deactivateDocument: (collectionName: string, path: string) => void;
|
||
getActiveDocumentPaths: (collectionName: string) => string[];
|
||
|
||
// Vector/embedding operations
|
||
getHashesForEmbedding: () => { hash: string; body: string; path: string }[];
|
||
clearAllEmbeddings: () => void;
|
||
insertEmbedding: (hash: string, seq: number, pos: number, embedding: Float32Array, model: string, embeddedAt: string) => void;
|
||
};
|
||
|
||
// =============================================================================
|
||
// Reindex & Embed — pure-logic functions for SDK and CLI
|
||
// =============================================================================
|
||
|
||
export type ReindexProgress = {
|
||
file: string;
|
||
current: number;
|
||
total: number;
|
||
};
|
||
|
||
export type ReindexResult = {
|
||
indexed: number;
|
||
updated: number;
|
||
unchanged: number;
|
||
removed: number;
|
||
orphanedCleaned: number;
|
||
};
|
||
|
||
/**
|
||
* Re-index a single collection by scanning the filesystem and updating the database.
|
||
* Pure function — no console output, no db lifecycle management.
|
||
*/
|
||
export async function reindexCollection(
|
||
store: Store,
|
||
collectionPath: string,
|
||
globPattern: string,
|
||
collectionName: string,
|
||
options?: {
|
||
ignorePatterns?: string[];
|
||
onProgress?: (info: ReindexProgress) => void;
|
||
}
|
||
): Promise<ReindexResult> {
|
||
const db = store.db;
|
||
const now = new Date().toISOString();
|
||
const excludeDirs = ["node_modules", ".git", ".cache", "vendor", "dist", "build"];
|
||
|
||
const allIgnore = [
|
||
...excludeDirs.map(d => `**/${d}/**`),
|
||
...(options?.ignorePatterns || []),
|
||
];
|
||
const allFiles: string[] = await fastGlob(globPattern, {
|
||
cwd: collectionPath,
|
||
onlyFiles: true,
|
||
followSymbolicLinks: false,
|
||
dot: false,
|
||
ignore: allIgnore,
|
||
});
|
||
// Filter hidden files/folders
|
||
const files = allFiles.filter(file => {
|
||
const parts = file.split("/");
|
||
return !parts.some(part => part.startsWith("."));
|
||
});
|
||
|
||
const total = files.length;
|
||
let indexed = 0, updated = 0, unchanged = 0, processed = 0;
|
||
const seenPaths = new Set<string>();
|
||
|
||
for (const relativeFile of files) {
|
||
const filepath = getRealPath(resolve(collectionPath, relativeFile));
|
||
const path = handelize(relativeFile);
|
||
seenPaths.add(path);
|
||
|
||
let content: string;
|
||
try {
|
||
content = readFileSync(filepath, "utf-8");
|
||
} catch {
|
||
processed++;
|
||
options?.onProgress?.({ file: relativeFile, current: processed, total });
|
||
continue;
|
||
}
|
||
|
||
if (!content.trim()) {
|
||
processed++;
|
||
continue;
|
||
}
|
||
|
||
const hash = await hashContent(content);
|
||
const title = extractTitle(content, relativeFile);
|
||
|
||
const existing = findActiveDocument(db, collectionName, path);
|
||
|
||
if (existing) {
|
||
if (existing.hash === hash) {
|
||
if (existing.title !== title) {
|
||
updateDocumentTitle(db, existing.id, title, now);
|
||
updated++;
|
||
} else {
|
||
unchanged++;
|
||
}
|
||
} else {
|
||
insertContent(db, hash, content, now);
|
||
const stat = statSync(filepath);
|
||
updateDocument(db, existing.id, title, hash,
|
||
stat ? new Date(stat.mtime).toISOString() : now);
|
||
updated++;
|
||
}
|
||
} else {
|
||
indexed++;
|
||
insertContent(db, hash, content, now);
|
||
const stat = statSync(filepath);
|
||
insertDocument(db, collectionName, path, title, hash,
|
||
stat ? new Date(stat.birthtime).toISOString() : now,
|
||
stat ? new Date(stat.mtime).toISOString() : now);
|
||
}
|
||
|
||
processed++;
|
||
options?.onProgress?.({ file: relativeFile, current: processed, total });
|
||
}
|
||
|
||
// Deactivate documents that no longer exist
|
||
const allActive = getActiveDocumentPaths(db, collectionName);
|
||
let removed = 0;
|
||
for (const path of allActive) {
|
||
if (!seenPaths.has(path)) {
|
||
deactivateDocument(db, collectionName, path);
|
||
removed++;
|
||
}
|
||
}
|
||
|
||
const orphanedCleaned = cleanupOrphanedContent(db);
|
||
|
||
return { indexed, updated, unchanged, removed, orphanedCleaned };
|
||
}
|
||
|
||
export type EmbedProgress = {
|
||
chunksEmbedded: number;
|
||
totalChunks: number;
|
||
bytesProcessed: number;
|
||
totalBytes: number;
|
||
errors: number;
|
||
};
|
||
|
||
export type EmbedResult = {
|
||
docsProcessed: number;
|
||
chunksEmbedded: number;
|
||
errors: number;
|
||
durationMs: number;
|
||
};
|
||
|
||
/**
|
||
* Generate vector embeddings for documents that need them.
|
||
* Pure function — no console output, no db lifecycle management.
|
||
* Uses the store's LlamaCpp instance if set, otherwise the global singleton.
|
||
*/
|
||
export async function generateEmbeddings(
|
||
store: Store,
|
||
options?: {
|
||
force?: boolean;
|
||
model?: string;
|
||
onProgress?: (info: EmbedProgress) => void;
|
||
}
|
||
): Promise<EmbedResult> {
|
||
const db = store.db;
|
||
const model = options?.model ?? DEFAULT_EMBED_MODEL;
|
||
const now = new Date().toISOString();
|
||
|
||
if (options?.force) {
|
||
clearAllEmbeddings(db);
|
||
}
|
||
|
||
const hashesToEmbed = getHashesForEmbedding(db);
|
||
|
||
if (hashesToEmbed.length === 0) {
|
||
return { docsProcessed: 0, chunksEmbedded: 0, errors: 0, durationMs: 0 };
|
||
}
|
||
|
||
// Chunk all documents
|
||
type ChunkItem = { hash: string; title: string; text: string; seq: number; pos: number; tokens: number; bytes: number };
|
||
const allChunks: ChunkItem[] = [];
|
||
|
||
for (const item of hashesToEmbed) {
|
||
const encoder = new TextEncoder();
|
||
const bodyBytes = encoder.encode(item.body).length;
|
||
if (bodyBytes === 0) continue;
|
||
|
||
const title = extractTitle(item.body, item.path);
|
||
const chunks = await chunkDocumentByTokens(item.body);
|
||
|
||
for (let seq = 0; seq < chunks.length; seq++) {
|
||
allChunks.push({
|
||
hash: item.hash,
|
||
title,
|
||
text: chunks[seq]!.text,
|
||
seq,
|
||
pos: chunks[seq]!.pos,
|
||
tokens: chunks[seq]!.tokens,
|
||
bytes: encoder.encode(chunks[seq]!.text).length,
|
||
});
|
||
}
|
||
}
|
||
|
||
if (allChunks.length === 0) {
|
||
return { docsProcessed: 0, chunksEmbedded: 0, errors: 0, durationMs: 0 };
|
||
}
|
||
|
||
const totalBytes = allChunks.reduce((sum, chk) => sum + chk.bytes, 0);
|
||
const totalChunks = allChunks.length;
|
||
const totalDocs = hashesToEmbed.length;
|
||
const startTime = Date.now();
|
||
|
||
// Use store's LlamaCpp or global singleton, wrapped in a session
|
||
const llm = getLlm(store);
|
||
const sessionOptions: LLMSessionOptions = { maxDuration: 30 * 60 * 1000, name: 'generateEmbeddings' };
|
||
|
||
// Create a session manager for this llm instance
|
||
const result = await withLLMSessionForLlm(llm, async (session) => {
|
||
// Get embedding dimensions from first chunk
|
||
const firstChunk = allChunks[0]!;
|
||
const firstText = formatDocForEmbedding(firstChunk.text, firstChunk.title);
|
||
const firstResult = await session.embed(firstText);
|
||
if (!firstResult) {
|
||
throw new Error("Failed to get embedding dimensions from first chunk");
|
||
}
|
||
store.ensureVecTable(firstResult.embedding.length);
|
||
|
||
let chunksEmbedded = 0, errors = 0, bytesProcessed = 0;
|
||
const BATCH_SIZE = 32;
|
||
|
||
for (let batchStart = 0; batchStart < allChunks.length; batchStart += BATCH_SIZE) {
|
||
const batchEnd = Math.min(batchStart + BATCH_SIZE, allChunks.length);
|
||
const batch = allChunks.slice(batchStart, batchEnd);
|
||
const texts = batch.map(chunk => formatDocForEmbedding(chunk.text, chunk.title));
|
||
|
||
try {
|
||
const embeddings = await session.embedBatch(texts);
|
||
for (let i = 0; i < batch.length; i++) {
|
||
const chunk = batch[i]!;
|
||
const embedding = embeddings[i];
|
||
if (embedding) {
|
||
insertEmbedding(db, chunk.hash, chunk.seq, chunk.pos, new Float32Array(embedding.embedding), model, now);
|
||
chunksEmbedded++;
|
||
} else {
|
||
errors++;
|
||
}
|
||
bytesProcessed += chunk.bytes;
|
||
}
|
||
} catch {
|
||
// Batch failed — try individual embeddings as fallback
|
||
for (const chunk of batch) {
|
||
try {
|
||
const text = formatDocForEmbedding(chunk.text, chunk.title);
|
||
const result = await session.embed(text);
|
||
if (result) {
|
||
insertEmbedding(db, chunk.hash, chunk.seq, chunk.pos, new Float32Array(result.embedding), model, now);
|
||
chunksEmbedded++;
|
||
} else {
|
||
errors++;
|
||
}
|
||
} catch {
|
||
errors++;
|
||
}
|
||
bytesProcessed += chunk.bytes;
|
||
}
|
||
}
|
||
|
||
options?.onProgress?.({ chunksEmbedded, totalChunks, bytesProcessed, totalBytes, errors });
|
||
}
|
||
|
||
return { chunksEmbedded, errors };
|
||
}, sessionOptions);
|
||
|
||
return {
|
||
docsProcessed: totalDocs,
|
||
chunksEmbedded: result.chunksEmbedded,
|
||
errors: result.errors,
|
||
durationMs: Date.now() - startTime,
|
||
};
|
||
}
|
||
|
||
/**
|
||
* Create a new store instance with the given database path.
|
||
* If no path is provided, uses the default path (~/.cache/qmd/index.sqlite).
|
||
*
|
||
* @param dbPath - Path to the SQLite database file
|
||
* @returns Store instance with all methods bound to the database
|
||
*/
|
||
export function createStore(dbPath?: string): Store {
|
||
const resolvedPath = dbPath || getDefaultDbPath();
|
||
const db = openDatabase(resolvedPath);
|
||
initializeDatabase(db);
|
||
|
||
const store: Store = {
|
||
db,
|
||
dbPath: resolvedPath,
|
||
close: () => db.close(),
|
||
ensureVecTable: (dimensions: number) => ensureVecTableInternal(db, dimensions),
|
||
|
||
// Index health
|
||
getHashesNeedingEmbedding: () => getHashesNeedingEmbedding(db),
|
||
getIndexHealth: () => getIndexHealth(db),
|
||
getStatus: () => getStatus(db),
|
||
|
||
// Caching
|
||
getCacheKey,
|
||
getCachedResult: (cacheKey: string) => getCachedResult(db, cacheKey),
|
||
setCachedResult: (cacheKey: string, result: string) => setCachedResult(db, cacheKey, result),
|
||
clearCache: () => clearCache(db),
|
||
|
||
// Cleanup and maintenance
|
||
deleteLLMCache: () => deleteLLMCache(db),
|
||
deleteInactiveDocuments: () => deleteInactiveDocuments(db),
|
||
cleanupOrphanedContent: () => cleanupOrphanedContent(db),
|
||
cleanupOrphanedVectors: () => cleanupOrphanedVectors(db),
|
||
vacuumDatabase: () => vacuumDatabase(db),
|
||
|
||
// Context
|
||
getContextForFile: (filepath: string) => getContextForFile(db, filepath),
|
||
getContextForPath: (collectionName: string, path: string) => getContextForPath(db, collectionName, path),
|
||
getCollectionByName: (name: string) => getCollectionByName(db, name),
|
||
getCollectionsWithoutContext: () => getCollectionsWithoutContext(db),
|
||
getTopLevelPathsWithoutContext: (collectionName: string) => getTopLevelPathsWithoutContext(db, collectionName),
|
||
|
||
// Virtual paths
|
||
parseVirtualPath,
|
||
buildVirtualPath,
|
||
isVirtualPath,
|
||
resolveVirtualPath: (virtualPath: string) => resolveVirtualPath(db, virtualPath),
|
||
toVirtualPath: (absolutePath: string) => toVirtualPath(db, absolutePath),
|
||
|
||
// Search
|
||
searchFTS: (query: string, limit?: number, collectionName?: string) => searchFTS(db, query, limit, collectionName),
|
||
searchVec: (query: string, model: string, limit?: number, collectionName?: string, session?: ILLMSession, precomputedEmbedding?: number[]) => searchVec(db, query, model, limit, collectionName, session, precomputedEmbedding),
|
||
|
||
// Query expansion & reranking
|
||
expandQuery: (query: string, model?: string, intent?: string) => expandQuery(query, model, db, intent, store.llm),
|
||
rerank: (query: string, documents: { file: string; text: string }[], model?: string, intent?: string) => rerank(query, documents, model, db, intent, store.llm),
|
||
|
||
// Document retrieval
|
||
findDocument: (filename: string, options?: { includeBody?: boolean }) => findDocument(db, filename, options),
|
||
getDocumentBody: (doc: DocumentResult | { filepath: string }, fromLine?: number, maxLines?: number) => getDocumentBody(db, doc, fromLine, maxLines),
|
||
findDocuments: (pattern: string, options?: { includeBody?: boolean; maxBytes?: number }) => findDocuments(db, pattern, options),
|
||
|
||
// Fuzzy matching and docid lookup
|
||
findSimilarFiles: (query: string, maxDistance?: number, limit?: number) => findSimilarFiles(db, query, maxDistance, limit),
|
||
matchFilesByGlob: (pattern: string) => matchFilesByGlob(db, pattern),
|
||
findDocumentByDocid: (docid: string) => findDocumentByDocid(db, docid),
|
||
|
||
// Document indexing operations
|
||
insertContent: (hash: string, content: string, createdAt: string) => insertContent(db, hash, content, createdAt),
|
||
insertDocument: (collectionName: string, path: string, title: string, hash: string, createdAt: string, modifiedAt: string) => insertDocument(db, collectionName, path, title, hash, createdAt, modifiedAt),
|
||
findActiveDocument: (collectionName: string, path: string) => findActiveDocument(db, collectionName, path),
|
||
updateDocumentTitle: (documentId: number, title: string, modifiedAt: string) => updateDocumentTitle(db, documentId, title, modifiedAt),
|
||
updateDocument: (documentId: number, title: string, hash: string, modifiedAt: string) => updateDocument(db, documentId, title, hash, modifiedAt),
|
||
deactivateDocument: (collectionName: string, path: string) => deactivateDocument(db, collectionName, path),
|
||
getActiveDocumentPaths: (collectionName: string) => getActiveDocumentPaths(db, collectionName),
|
||
|
||
// Vector/embedding operations
|
||
getHashesForEmbedding: () => getHashesForEmbedding(db),
|
||
clearAllEmbeddings: () => clearAllEmbeddings(db),
|
||
insertEmbedding: (hash: string, seq: number, pos: number, embedding: Float32Array, model: string, embeddedAt: string) => insertEmbedding(db, hash, seq, pos, embedding, model, embeddedAt),
|
||
};
|
||
|
||
return store;
|
||
}
|
||
|
||
// =============================================================================
|
||
// Core Document Type
|
||
// =============================================================================
|
||
|
||
/**
|
||
* Unified document result type with all metadata.
|
||
* Body is optional - use getDocumentBody() to load it separately if needed.
|
||
*/
|
||
export type DocumentResult = {
|
||
filepath: string; // Full filesystem path
|
||
displayPath: string; // Short display path (e.g., "docs/readme.md")
|
||
title: string; // Document title (from first heading or filename)
|
||
context: string | null; // Folder context description if configured
|
||
hash: string; // Content hash for caching/change detection
|
||
docid: string; // Short docid (first 6 chars of hash) for quick reference
|
||
collectionName: string; // Parent collection name
|
||
modifiedAt: string; // Last modification timestamp
|
||
bodyLength: number; // Body length in bytes (useful before loading)
|
||
body?: string; // Document body (optional, load with getDocumentBody)
|
||
};
|
||
|
||
/**
|
||
* Extract short docid from a full hash (first 6 characters).
|
||
*/
|
||
export function getDocid(hash: string): string {
|
||
return hash.slice(0, 6);
|
||
}
|
||
|
||
/**
|
||
* Handelize a filename to be more token-friendly.
|
||
* - Convert triple underscore `___` to `/` (folder separator)
|
||
* - Convert to lowercase
|
||
* - Replace sequences of non-word chars (except /) with single dash
|
||
* - Remove leading/trailing dashes from path segments
|
||
* - Preserve folder structure (a/b/c/d.md stays structured)
|
||
* - Preserve file extension
|
||
*/
|
||
/** Replace emoji/symbol codepoints with their hex representation (e.g. 🐘 → 1f418) */
|
||
function emojiToHex(str: string): string {
|
||
return str.replace(/(?:\p{So}\p{Mn}?|\p{Sk})+/gu, (run) => {
|
||
// Split the run into individual emoji and convert each to hex, dash-separated
|
||
return [...run].filter(c => /\p{So}|\p{Sk}/u.test(c))
|
||
.map(c => c.codePointAt(0)!.toString(16)).join('-');
|
||
});
|
||
}
|
||
|
||
export function handelize(path: string): string {
|
||
if (!path || path.trim() === '') {
|
||
throw new Error('handelize: path cannot be empty');
|
||
}
|
||
|
||
// Allow route-style "$" filenames while still rejecting paths with no usable content.
|
||
// Emoji (\p{So}) counts as valid content — they get converted to hex codepoints below.
|
||
const segments = path.split('/').filter(Boolean);
|
||
const lastSegment = segments[segments.length - 1] || '';
|
||
const filenameWithoutExt = lastSegment.replace(/\.[^.]+$/, '');
|
||
const hasValidContent = /[\p{L}\p{N}\p{So}\p{Sk}$]/u.test(filenameWithoutExt);
|
||
if (!hasValidContent) {
|
||
throw new Error(`handelize: path "${path}" has no valid filename content`);
|
||
}
|
||
|
||
const result = path
|
||
.replace(/___/g, '/') // Triple underscore becomes folder separator
|
||
.toLowerCase()
|
||
.split('/')
|
||
.map((segment, idx, arr) => {
|
||
const isLastSegment = idx === arr.length - 1;
|
||
|
||
// Convert emoji to hex codepoints before cleaning
|
||
segment = emojiToHex(segment);
|
||
|
||
if (isLastSegment) {
|
||
// For the filename (last segment), preserve the extension
|
||
const extMatch = segment.match(/(\.[a-z0-9]+)$/i);
|
||
const ext = extMatch ? extMatch[1] : '';
|
||
const nameWithoutExt = ext ? segment.slice(0, -ext.length) : segment;
|
||
|
||
const cleanedName = nameWithoutExt
|
||
.replace(/[^\p{L}\p{N}$]+/gu, '-') // Keep route marker "$", dash-separate other chars
|
||
.replace(/^-+|-+$/g, ''); // Remove leading/trailing dashes
|
||
|
||
return cleanedName + ext;
|
||
} else {
|
||
// For directories, just clean normally
|
||
return segment
|
||
.replace(/[^\p{L}\p{N}$]+/gu, '-')
|
||
.replace(/^-+|-+$/g, '');
|
||
}
|
||
})
|
||
.filter(Boolean)
|
||
.join('/');
|
||
|
||
if (!result) {
|
||
throw new Error(`handelize: path "${path}" resulted in empty string after processing`);
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
/**
|
||
* Search result extends DocumentResult with score and source info
|
||
*/
|
||
export type SearchResult = DocumentResult & {
|
||
score: number; // Relevance score (0-1)
|
||
source: "fts" | "vec"; // Search source (full-text or vector)
|
||
chunkPos?: number; // Character position of matching chunk (for vector search)
|
||
};
|
||
|
||
/**
|
||
* Ranked result for RRF fusion (simplified, used internally)
|
||
*/
|
||
export type RankedResult = {
|
||
file: string;
|
||
displayPath: string;
|
||
title: string;
|
||
body: string;
|
||
score: number;
|
||
};
|
||
|
||
export type RRFContributionTrace = {
|
||
listIndex: number;
|
||
source: "fts" | "vec";
|
||
queryType: "original" | "lex" | "vec" | "hyde";
|
||
query: string;
|
||
rank: number; // 1-indexed rank within list
|
||
weight: number;
|
||
backendScore: number; // Backend-normalized score before fusion
|
||
rrfContribution: number; // weight / (k + rank)
|
||
};
|
||
|
||
export type RRFScoreTrace = {
|
||
contributions: RRFContributionTrace[];
|
||
baseScore: number; // Sum of reciprocal-rank contributions
|
||
topRank: number; // Best (lowest) rank seen across lists
|
||
topRankBonus: number; // +0.05 for rank 1, +0.02 for rank 2-3
|
||
totalScore: number; // baseScore + topRankBonus
|
||
};
|
||
|
||
export type HybridQueryExplain = {
|
||
ftsScores: number[];
|
||
vectorScores: number[];
|
||
rrf: {
|
||
rank: number; // Rank after RRF fusion (1-indexed)
|
||
positionScore: number; // 1 / rank used in position-aware blending
|
||
weight: number; // Position-aware RRF weight (0.75 / 0.60 / 0.40)
|
||
baseScore: number;
|
||
topRankBonus: number;
|
||
totalScore: number;
|
||
contributions: RRFContributionTrace[];
|
||
};
|
||
rerankScore: number;
|
||
blendedScore: number;
|
||
};
|
||
|
||
/**
|
||
* Error result when document is not found
|
||
*/
|
||
export type DocumentNotFound = {
|
||
error: "not_found";
|
||
query: string;
|
||
similarFiles: string[];
|
||
};
|
||
|
||
/**
|
||
* Result from multi-get operations
|
||
*/
|
||
export type MultiGetResult = {
|
||
doc: DocumentResult;
|
||
skipped: false;
|
||
} | {
|
||
doc: Pick<DocumentResult, "filepath" | "displayPath">;
|
||
skipped: true;
|
||
skipReason: string;
|
||
};
|
||
|
||
export type CollectionInfo = {
|
||
name: string;
|
||
path: string | null;
|
||
pattern: string | null;
|
||
documents: number;
|
||
lastUpdated: string;
|
||
};
|
||
|
||
export type IndexStatus = {
|
||
totalDocuments: number;
|
||
needsEmbedding: number;
|
||
hasVectorIndex: boolean;
|
||
collections: CollectionInfo[];
|
||
};
|
||
|
||
// =============================================================================
|
||
// Index health
|
||
// =============================================================================
|
||
|
||
export function getHashesNeedingEmbedding(db: Database): number {
|
||
const result = db.prepare(`
|
||
SELECT COUNT(DISTINCT d.hash) as count
|
||
FROM documents d
|
||
LEFT JOIN content_vectors v ON d.hash = v.hash AND v.seq = 0
|
||
WHERE d.active = 1 AND v.hash IS NULL
|
||
`).get() as { count: number };
|
||
return result.count;
|
||
}
|
||
|
||
export type IndexHealthInfo = {
|
||
needsEmbedding: number;
|
||
totalDocs: number;
|
||
daysStale: number | null;
|
||
};
|
||
|
||
export function getIndexHealth(db: Database): IndexHealthInfo {
|
||
const needsEmbedding = getHashesNeedingEmbedding(db);
|
||
const totalDocs = (db.prepare(`SELECT COUNT(*) as count FROM documents WHERE active = 1`).get() as { count: number }).count;
|
||
|
||
const mostRecent = db.prepare(`SELECT MAX(modified_at) as latest FROM documents WHERE active = 1`).get() as { latest: string | null };
|
||
let daysStale: number | null = null;
|
||
if (mostRecent?.latest) {
|
||
const lastUpdate = new Date(mostRecent.latest);
|
||
daysStale = Math.floor((Date.now() - lastUpdate.getTime()) / (24 * 60 * 60 * 1000));
|
||
}
|
||
|
||
return { needsEmbedding, totalDocs, daysStale };
|
||
}
|
||
|
||
// =============================================================================
|
||
// Caching
|
||
// =============================================================================
|
||
|
||
export function getCacheKey(url: string, body: object): string {
|
||
const hash = createHash("sha256");
|
||
hash.update(url);
|
||
hash.update(JSON.stringify(body));
|
||
return hash.digest("hex");
|
||
}
|
||
|
||
export function getCachedResult(db: Database, cacheKey: string): string | null {
|
||
const row = db.prepare(`SELECT result FROM llm_cache WHERE hash = ?`).get(cacheKey) as { result: string } | null;
|
||
return row?.result || null;
|
||
}
|
||
|
||
export function setCachedResult(db: Database, cacheKey: string, result: string): void {
|
||
const now = new Date().toISOString();
|
||
db.prepare(`INSERT OR REPLACE INTO llm_cache (hash, result, created_at) VALUES (?, ?, ?)`).run(cacheKey, result, now);
|
||
if (Math.random() < 0.01) {
|
||
db.exec(`DELETE FROM llm_cache WHERE hash NOT IN (SELECT hash FROM llm_cache ORDER BY created_at DESC LIMIT 1000)`);
|
||
}
|
||
}
|
||
|
||
export function clearCache(db: Database): void {
|
||
db.exec(`DELETE FROM llm_cache`);
|
||
}
|
||
|
||
// =============================================================================
|
||
// Cleanup and maintenance operations
|
||
// =============================================================================
|
||
|
||
/**
|
||
* Delete cached LLM API responses.
|
||
* Returns the number of cached responses deleted.
|
||
*/
|
||
export function deleteLLMCache(db: Database): number {
|
||
const result = db.prepare(`DELETE FROM llm_cache`).run();
|
||
return result.changes;
|
||
}
|
||
|
||
/**
|
||
* Remove inactive document records (active = 0).
|
||
* Returns the number of inactive documents deleted.
|
||
*/
|
||
export function deleteInactiveDocuments(db: Database): number {
|
||
const result = db.prepare(`DELETE FROM documents WHERE active = 0`).run();
|
||
return result.changes;
|
||
}
|
||
|
||
/**
|
||
* Remove orphaned content hashes that are not referenced by any active document.
|
||
* Returns the number of orphaned content hashes deleted.
|
||
*/
|
||
export function cleanupOrphanedContent(db: Database): number {
|
||
const result = db.prepare(`
|
||
DELETE FROM content
|
||
WHERE hash NOT IN (SELECT DISTINCT hash FROM documents WHERE active = 1)
|
||
`).run();
|
||
return result.changes;
|
||
}
|
||
|
||
/**
|
||
* Remove orphaned vector embeddings that are not referenced by any active document.
|
||
* Returns the number of orphaned embedding chunks deleted.
|
||
*/
|
||
export function cleanupOrphanedVectors(db: Database): number {
|
||
// Check if vectors_vec table exists
|
||
const tableExists = db.prepare(`
|
||
SELECT name FROM sqlite_master WHERE type='table' AND name='vectors_vec'
|
||
`).get();
|
||
|
||
if (!tableExists) {
|
||
return 0;
|
||
}
|
||
|
||
// Count orphaned vectors first
|
||
const countResult = db.prepare(`
|
||
SELECT COUNT(*) as c FROM content_vectors cv
|
||
WHERE NOT EXISTS (
|
||
SELECT 1 FROM documents d WHERE d.hash = cv.hash AND d.active = 1
|
||
)
|
||
`).get() as { c: number };
|
||
|
||
if (countResult.c === 0) {
|
||
return 0;
|
||
}
|
||
|
||
// Delete from vectors_vec first
|
||
db.exec(`
|
||
DELETE FROM vectors_vec WHERE hash_seq IN (
|
||
SELECT cv.hash || '_' || cv.seq FROM content_vectors cv
|
||
WHERE NOT EXISTS (
|
||
SELECT 1 FROM documents d WHERE d.hash = cv.hash AND d.active = 1
|
||
)
|
||
)
|
||
`);
|
||
|
||
// Delete from content_vectors
|
||
db.exec(`
|
||
DELETE FROM content_vectors WHERE hash NOT IN (
|
||
SELECT hash FROM documents WHERE active = 1
|
||
)
|
||
`);
|
||
|
||
return countResult.c;
|
||
}
|
||
|
||
/**
|
||
* Run VACUUM to reclaim unused space in the database.
|
||
* This operation rebuilds the database file to eliminate fragmentation.
|
||
*/
|
||
export function vacuumDatabase(db: Database): void {
|
||
db.exec(`VACUUM`);
|
||
}
|
||
|
||
// =============================================================================
|
||
// Document helpers
|
||
// =============================================================================
|
||
|
||
export async function hashContent(content: string): Promise<string> {
|
||
const hash = createHash("sha256");
|
||
hash.update(content);
|
||
return hash.digest("hex");
|
||
}
|
||
|
||
const titleExtractors: Record<string, (content: string) => string | null> = {
|
||
'.md': (content) => {
|
||
const match = content.match(/^##?\s+(.+)$/m);
|
||
if (match) {
|
||
const title = (match[1] ?? "").trim();
|
||
if (title === "📝 Notes" || title === "Notes") {
|
||
const nextMatch = content.match(/^##\s+(.+)$/m);
|
||
if (nextMatch?.[1]) return nextMatch[1].trim();
|
||
}
|
||
return title;
|
||
}
|
||
return null;
|
||
},
|
||
'.org': (content) => {
|
||
const titleProp = content.match(/^#\+TITLE:\s*(.+)$/im);
|
||
if (titleProp?.[1]) return titleProp[1].trim();
|
||
const heading = content.match(/^\*+\s+(.+)$/m);
|
||
if (heading?.[1]) return heading[1].trim();
|
||
return null;
|
||
},
|
||
};
|
||
|
||
export function extractTitle(content: string, filename: string): string {
|
||
const ext = filename.slice(filename.lastIndexOf('.')).toLowerCase();
|
||
const extractor = titleExtractors[ext];
|
||
if (extractor) {
|
||
const title = extractor(content);
|
||
if (title) return title;
|
||
}
|
||
return filename.replace(/\.[^.]+$/, "").split("/").pop() || filename;
|
||
}
|
||
|
||
// =============================================================================
|
||
// Document indexing operations
|
||
// =============================================================================
|
||
|
||
/**
|
||
* Insert content into the content table (content-addressable storage).
|
||
* Uses INSERT OR IGNORE so duplicate hashes are skipped.
|
||
*/
|
||
export function insertContent(db: Database, hash: string, content: string, createdAt: string): void {
|
||
db.prepare(`INSERT OR IGNORE INTO content (hash, doc, created_at) VALUES (?, ?, ?)`)
|
||
.run(hash, content, createdAt);
|
||
}
|
||
|
||
/**
|
||
* Insert a new document into the documents table.
|
||
*/
|
||
export function insertDocument(
|
||
db: Database,
|
||
collectionName: string,
|
||
path: string,
|
||
title: string,
|
||
hash: string,
|
||
createdAt: string,
|
||
modifiedAt: string
|
||
): void {
|
||
db.prepare(`
|
||
INSERT INTO documents (collection, path, title, hash, created_at, modified_at, active)
|
||
VALUES (?, ?, ?, ?, ?, ?, 1)
|
||
ON CONFLICT(collection, path) DO UPDATE SET
|
||
title = excluded.title,
|
||
hash = excluded.hash,
|
||
modified_at = excluded.modified_at,
|
||
active = 1
|
||
`).run(collectionName, path, title, hash, createdAt, modifiedAt);
|
||
}
|
||
|
||
/**
|
||
* Find an active document by collection name and path.
|
||
*/
|
||
export function findActiveDocument(
|
||
db: Database,
|
||
collectionName: string,
|
||
path: string
|
||
): { id: number; hash: string; title: string } | null {
|
||
const row = db.prepare(`
|
||
SELECT id, hash, title FROM documents
|
||
WHERE collection = ? AND path = ? AND active = 1
|
||
`).get(collectionName, path) as { id: number; hash: string; title: string } | undefined;
|
||
return row ?? null;
|
||
}
|
||
|
||
/**
|
||
* Update the title and modified_at timestamp for a document.
|
||
*/
|
||
export function updateDocumentTitle(
|
||
db: Database,
|
||
documentId: number,
|
||
title: string,
|
||
modifiedAt: string
|
||
): void {
|
||
db.prepare(`UPDATE documents SET title = ?, modified_at = ? WHERE id = ?`)
|
||
.run(title, modifiedAt, documentId);
|
||
}
|
||
|
||
/**
|
||
* Update an existing document's hash, title, and modified_at timestamp.
|
||
* Used when content changes but the file path stays the same.
|
||
*/
|
||
export function updateDocument(
|
||
db: Database,
|
||
documentId: number,
|
||
title: string,
|
||
hash: string,
|
||
modifiedAt: string
|
||
): void {
|
||
db.prepare(`UPDATE documents SET title = ?, hash = ?, modified_at = ? WHERE id = ?`)
|
||
.run(title, hash, modifiedAt, documentId);
|
||
}
|
||
|
||
/**
|
||
* Deactivate a document (mark as inactive but don't delete).
|
||
*/
|
||
export function deactivateDocument(db: Database, collectionName: string, path: string): void {
|
||
db.prepare(`UPDATE documents SET active = 0 WHERE collection = ? AND path = ? AND active = 1`)
|
||
.run(collectionName, path);
|
||
}
|
||
|
||
/**
|
||
* Get all active document paths for a collection.
|
||
*/
|
||
export function getActiveDocumentPaths(db: Database, collectionName: string): string[] {
|
||
const rows = db.prepare(`
|
||
SELECT path FROM documents WHERE collection = ? AND active = 1
|
||
`).all(collectionName) as { path: string }[];
|
||
return rows.map(r => r.path);
|
||
}
|
||
|
||
export { formatQueryForEmbedding, formatDocForEmbedding };
|
||
|
||
export function chunkDocument(
|
||
content: string,
|
||
maxChars: number = CHUNK_SIZE_CHARS,
|
||
overlapChars: number = CHUNK_OVERLAP_CHARS,
|
||
windowChars: number = CHUNK_WINDOW_CHARS
|
||
): { text: string; pos: number }[] {
|
||
if (content.length <= maxChars) {
|
||
return [{ text: content, pos: 0 }];
|
||
}
|
||
|
||
// Pre-scan all break points and code fences once
|
||
const breakPoints = scanBreakPoints(content);
|
||
const codeFences = findCodeFences(content);
|
||
|
||
const chunks: { text: string; pos: number }[] = [];
|
||
let charPos = 0;
|
||
|
||
while (charPos < content.length) {
|
||
// Calculate target end position for this chunk
|
||
const targetEndPos = Math.min(charPos + maxChars, content.length);
|
||
|
||
let endPos = targetEndPos;
|
||
|
||
// If not at the end, find the best break point
|
||
if (endPos < content.length) {
|
||
// Find best cutoff using scored algorithm
|
||
const bestCutoff = findBestCutoff(
|
||
breakPoints,
|
||
targetEndPos,
|
||
windowChars,
|
||
0.7,
|
||
codeFences
|
||
);
|
||
|
||
// Only use the cutoff if it's within our current chunk
|
||
if (bestCutoff > charPos && bestCutoff <= targetEndPos) {
|
||
endPos = bestCutoff;
|
||
}
|
||
}
|
||
|
||
// Ensure we make progress
|
||
if (endPos <= charPos) {
|
||
endPos = Math.min(charPos + maxChars, content.length);
|
||
}
|
||
|
||
chunks.push({ text: content.slice(charPos, endPos), pos: charPos });
|
||
|
||
// Move forward, but overlap with previous chunk
|
||
// For last chunk, don't overlap (just go to the end)
|
||
if (endPos >= content.length) {
|
||
break;
|
||
}
|
||
charPos = endPos - overlapChars;
|
||
const lastChunkPos = chunks.at(-1)!.pos;
|
||
if (charPos <= lastChunkPos) {
|
||
// Prevent infinite loop - move forward at least a bit
|
||
charPos = endPos;
|
||
}
|
||
}
|
||
|
||
return chunks;
|
||
}
|
||
|
||
/**
|
||
* Chunk a document by actual token count using the LLM tokenizer.
|
||
* More accurate than character-based chunking but requires async.
|
||
*/
|
||
export async function chunkDocumentByTokens(
|
||
content: string,
|
||
maxTokens: number = CHUNK_SIZE_TOKENS,
|
||
overlapTokens: number = CHUNK_OVERLAP_TOKENS,
|
||
windowTokens: number = CHUNK_WINDOW_TOKENS
|
||
): Promise<{ text: string; pos: number; tokens: number }[]> {
|
||
const llm = getDefaultLlamaCpp();
|
||
|
||
// Use moderate chars/token estimate (prose ~4, code ~2, mixed ~3)
|
||
// If chunks exceed limit, they'll be re-split with actual ratio
|
||
const avgCharsPerToken = 3;
|
||
const maxChars = maxTokens * avgCharsPerToken;
|
||
const overlapChars = overlapTokens * avgCharsPerToken;
|
||
const windowChars = windowTokens * avgCharsPerToken;
|
||
|
||
// Chunk in character space with conservative estimate
|
||
let charChunks = chunkDocument(content, maxChars, overlapChars, windowChars);
|
||
|
||
// Tokenize and split any chunks that still exceed limit
|
||
const results: { text: string; pos: number; tokens: number }[] = [];
|
||
|
||
for (const chunk of charChunks) {
|
||
const tokens = await llm.tokenize(chunk.text);
|
||
|
||
if (tokens.length <= maxTokens) {
|
||
results.push({ text: chunk.text, pos: chunk.pos, tokens: tokens.length });
|
||
} else {
|
||
// Chunk is still too large - split it further
|
||
// Use actual token count to estimate better char limit
|
||
const actualCharsPerToken = chunk.text.length / tokens.length;
|
||
const safeMaxChars = Math.floor(maxTokens * actualCharsPerToken * 0.95); // 5% safety margin
|
||
|
||
const subChunks = chunkDocument(chunk.text, safeMaxChars, Math.floor(overlapChars * actualCharsPerToken / 2), Math.floor(windowChars * actualCharsPerToken / 2));
|
||
|
||
for (const subChunk of subChunks) {
|
||
const subTokens = await llm.tokenize(subChunk.text);
|
||
results.push({
|
||
text: subChunk.text,
|
||
pos: chunk.pos + subChunk.pos,
|
||
tokens: subTokens.length,
|
||
});
|
||
}
|
||
}
|
||
}
|
||
|
||
return results;
|
||
}
|
||
|
||
// =============================================================================
|
||
// Fuzzy matching
|
||
// =============================================================================
|
||
|
||
function levenshtein(a: string, b: string): number {
|
||
const m = a.length, n = b.length;
|
||
if (m === 0) return n;
|
||
if (n === 0) return m;
|
||
const dp: number[][] = Array.from({ length: m + 1 }, () => Array(n + 1).fill(0));
|
||
for (let i = 0; i <= m; i++) dp[i]![0] = i;
|
||
for (let j = 0; j <= n; j++) dp[0]![j] = j;
|
||
for (let i = 1; i <= m; i++) {
|
||
for (let j = 1; j <= n; j++) {
|
||
const cost = a[i - 1] === b[j - 1] ? 0 : 1;
|
||
dp[i]![j] = Math.min(
|
||
dp[i - 1]![j]! + 1,
|
||
dp[i]![j - 1]! + 1,
|
||
dp[i - 1]![j - 1]! + cost
|
||
);
|
||
}
|
||
}
|
||
return dp[m]![n]!;
|
||
}
|
||
|
||
/**
|
||
* Normalize a docid input by stripping surrounding quotes and leading #.
|
||
* Handles: "#abc123", 'abc123', "abc123", #abc123, abc123
|
||
* Returns the bare hex string.
|
||
*/
|
||
export function normalizeDocid(docid: string): string {
|
||
let normalized = docid.trim();
|
||
|
||
// Strip surrounding quotes (single or double)
|
||
if ((normalized.startsWith('"') && normalized.endsWith('"')) ||
|
||
(normalized.startsWith("'") && normalized.endsWith("'"))) {
|
||
normalized = normalized.slice(1, -1);
|
||
}
|
||
|
||
// Strip leading # if present
|
||
if (normalized.startsWith('#')) {
|
||
normalized = normalized.slice(1);
|
||
}
|
||
|
||
return normalized;
|
||
}
|
||
|
||
/**
|
||
* Check if a string looks like a docid reference.
|
||
* Accepts: #abc123, abc123, "#abc123", "abc123", '#abc123', 'abc123'
|
||
* Returns true if the normalized form is a valid hex string of 6+ chars.
|
||
*/
|
||
export function isDocid(input: string): boolean {
|
||
const normalized = normalizeDocid(input);
|
||
// Must be at least 6 hex characters
|
||
return normalized.length >= 6 && /^[a-f0-9]+$/i.test(normalized);
|
||
}
|
||
|
||
/**
|
||
* Find a document by its short docid (first 6 characters of hash).
|
||
* Returns the document's virtual path if found, null otherwise.
|
||
* If multiple documents match the same short hash (collision), returns the first one.
|
||
*
|
||
* Accepts lenient input: #abc123, abc123, "#abc123", "abc123"
|
||
*/
|
||
export function findDocumentByDocid(db: Database, docid: string): { filepath: string; hash: string } | null {
|
||
const shortHash = normalizeDocid(docid);
|
||
|
||
if (shortHash.length < 1) return null;
|
||
|
||
// Look up documents where hash starts with the short hash
|
||
const doc = db.prepare(`
|
||
SELECT 'qmd://' || d.collection || '/' || d.path as filepath, d.hash
|
||
FROM documents d
|
||
WHERE d.hash LIKE ? AND d.active = 1
|
||
LIMIT 1
|
||
`).get(`${shortHash}%`) as { filepath: string; hash: string } | null;
|
||
|
||
return doc;
|
||
}
|
||
|
||
export function findSimilarFiles(db: Database, query: string, maxDistance: number = 3, limit: number = 5): string[] {
|
||
const allFiles = db.prepare(`
|
||
SELECT d.path
|
||
FROM documents d
|
||
WHERE d.active = 1
|
||
`).all() as { path: string }[];
|
||
const queryLower = query.toLowerCase();
|
||
const scored = allFiles
|
||
.map(f => ({ path: f.path, dist: levenshtein(f.path.toLowerCase(), queryLower) }))
|
||
.filter(f => f.dist <= maxDistance)
|
||
.sort((a, b) => a.dist - b.dist)
|
||
.slice(0, limit);
|
||
return scored.map(f => f.path);
|
||
}
|
||
|
||
export function matchFilesByGlob(db: Database, pattern: string): { filepath: string; displayPath: string; bodyLength: number }[] {
|
||
const allFiles = db.prepare(`
|
||
SELECT
|
||
'qmd://' || d.collection || '/' || d.path as virtual_path,
|
||
LENGTH(content.doc) as body_length,
|
||
d.path,
|
||
d.collection
|
||
FROM documents d
|
||
JOIN content ON content.hash = d.hash
|
||
WHERE d.active = 1
|
||
`).all() as { virtual_path: string; body_length: number; path: string; collection: string }[];
|
||
|
||
const isMatch = picomatch(pattern);
|
||
return allFiles
|
||
.filter(f => isMatch(f.virtual_path) || isMatch(f.path))
|
||
.map(f => ({
|
||
filepath: f.virtual_path, // Virtual path for precise lookup
|
||
displayPath: f.path, // Relative path for display
|
||
bodyLength: f.body_length
|
||
}));
|
||
}
|
||
|
||
// =============================================================================
|
||
// Context
|
||
// =============================================================================
|
||
|
||
/**
|
||
* Get context for a file path using hierarchical inheritance.
|
||
* Contexts are collection-scoped and inherit from parent directories.
|
||
* For example, context at "/talks" applies to "/talks/2024/keynote.md".
|
||
*
|
||
* @param db Database instance (unused - kept for compatibility)
|
||
* @param collectionName Collection name
|
||
* @param path Relative path within the collection
|
||
* @returns Context string or null if no context is defined
|
||
*/
|
||
export function getContextForPath(db: Database, collectionName: string, path: string): string | null {
|
||
const coll = getStoreCollection(db, collectionName);
|
||
|
||
if (!coll) return null;
|
||
|
||
// Collect ALL matching contexts (global + all path prefixes)
|
||
const contexts: string[] = [];
|
||
|
||
// Add global context if present
|
||
const globalCtx = getStoreGlobalContext(db);
|
||
if (globalCtx) {
|
||
contexts.push(globalCtx);
|
||
}
|
||
|
||
// Add all matching path contexts (from most general to most specific)
|
||
if (coll.context) {
|
||
const normalizedPath = path.startsWith("/") ? path : `/${path}`;
|
||
|
||
// Collect all matching prefixes
|
||
const matchingContexts: { prefix: string; context: string }[] = [];
|
||
for (const [prefix, context] of Object.entries(coll.context)) {
|
||
const normalizedPrefix = prefix.startsWith("/") ? prefix : `/${prefix}`;
|
||
if (normalizedPath.startsWith(normalizedPrefix)) {
|
||
matchingContexts.push({ prefix: normalizedPrefix, context });
|
||
}
|
||
}
|
||
|
||
// Sort by prefix length (shortest/most general first)
|
||
matchingContexts.sort((a, b) => a.prefix.length - b.prefix.length);
|
||
|
||
// Add all matching contexts
|
||
for (const match of matchingContexts) {
|
||
contexts.push(match.context);
|
||
}
|
||
}
|
||
|
||
// Join all contexts with double newline
|
||
return contexts.length > 0 ? contexts.join('\n\n') : null;
|
||
}
|
||
|
||
/**
|
||
* Get context for a file path (virtual or filesystem).
|
||
* Resolves the collection and relative path from the DB store_collections table.
|
||
*/
|
||
export function getContextForFile(db: Database, filepath: string): string | null {
|
||
// Handle undefined or null filepath
|
||
if (!filepath) return null;
|
||
|
||
// Get all collections from DB
|
||
const collections = getStoreCollections(db);
|
||
|
||
// Parse virtual path format: qmd://collection/path
|
||
let collectionName: string | null = null;
|
||
let relativePath: string | null = null;
|
||
|
||
const parsedVirtual = filepath.startsWith('qmd://') ? parseVirtualPath(filepath) : null;
|
||
if (parsedVirtual) {
|
||
collectionName = parsedVirtual.collectionName;
|
||
relativePath = parsedVirtual.path;
|
||
} else {
|
||
// Filesystem path: find which collection this absolute path belongs to
|
||
for (const coll of collections) {
|
||
// Skip collections with missing paths
|
||
if (!coll || !coll.path) continue;
|
||
|
||
if (filepath.startsWith(coll.path + '/') || filepath === coll.path) {
|
||
collectionName = coll.name;
|
||
// Extract relative path
|
||
relativePath = filepath.startsWith(coll.path + '/')
|
||
? filepath.slice(coll.path.length + 1)
|
||
: '';
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (!collectionName || relativePath === null) return null;
|
||
}
|
||
|
||
// Get the collection from DB
|
||
const coll = getStoreCollection(db, collectionName);
|
||
if (!coll) return null;
|
||
|
||
// Verify this document exists in the database
|
||
const doc = db.prepare(`
|
||
SELECT d.path
|
||
FROM documents d
|
||
WHERE d.collection = ? AND d.path = ? AND d.active = 1
|
||
LIMIT 1
|
||
`).get(collectionName, relativePath) as { path: string } | null;
|
||
|
||
if (!doc) return null;
|
||
|
||
// Collect ALL matching contexts (global + all path prefixes)
|
||
const contexts: string[] = [];
|
||
|
||
// Add global context if present
|
||
const globalCtx = getStoreGlobalContext(db);
|
||
if (globalCtx) {
|
||
contexts.push(globalCtx);
|
||
}
|
||
|
||
// Add all matching path contexts (from most general to most specific)
|
||
if (coll.context) {
|
||
const normalizedPath = relativePath.startsWith("/") ? relativePath : `/${relativePath}`;
|
||
|
||
// Collect all matching prefixes
|
||
const matchingContexts: { prefix: string; context: string }[] = [];
|
||
for (const [prefix, context] of Object.entries(coll.context)) {
|
||
const normalizedPrefix = prefix.startsWith("/") ? prefix : `/${prefix}`;
|
||
if (normalizedPath.startsWith(normalizedPrefix)) {
|
||
matchingContexts.push({ prefix: normalizedPrefix, context });
|
||
}
|
||
}
|
||
|
||
// Sort by prefix length (shortest/most general first)
|
||
matchingContexts.sort((a, b) => a.prefix.length - b.prefix.length);
|
||
|
||
// Add all matching contexts
|
||
for (const match of matchingContexts) {
|
||
contexts.push(match.context);
|
||
}
|
||
}
|
||
|
||
// Join all contexts with double newline
|
||
return contexts.length > 0 ? contexts.join('\n\n') : null;
|
||
}
|
||
|
||
/**
|
||
* Get collection by name from DB store_collections table.
|
||
*/
|
||
export function getCollectionByName(db: Database, name: string): { name: string; pwd: string; glob_pattern: string } | null {
|
||
const collection = getStoreCollection(db, name);
|
||
if (!collection) return null;
|
||
|
||
return {
|
||
name: collection.name,
|
||
pwd: collection.path,
|
||
glob_pattern: collection.pattern,
|
||
};
|
||
}
|
||
|
||
/**
|
||
* List all collections with document counts from database.
|
||
* Merges store_collections config with database statistics.
|
||
*/
|
||
export function listCollections(db: Database): { name: string; pwd: string; glob_pattern: string; doc_count: number; active_count: number; last_modified: string | null; includeByDefault: boolean }[] {
|
||
const collections = getStoreCollections(db);
|
||
|
||
// Get document counts from database for each collection
|
||
const result = collections.map(coll => {
|
||
const stats = db.prepare(`
|
||
SELECT
|
||
COUNT(d.id) as doc_count,
|
||
SUM(CASE WHEN d.active = 1 THEN 1 ELSE 0 END) as active_count,
|
||
MAX(d.modified_at) as last_modified
|
||
FROM documents d
|
||
WHERE d.collection = ?
|
||
`).get(coll.name) as { doc_count: number; active_count: number; last_modified: string | null } | null;
|
||
|
||
return {
|
||
name: coll.name,
|
||
pwd: coll.path,
|
||
glob_pattern: coll.pattern,
|
||
doc_count: stats?.doc_count || 0,
|
||
active_count: stats?.active_count || 0,
|
||
last_modified: stats?.last_modified || null,
|
||
includeByDefault: coll.includeByDefault !== false,
|
||
};
|
||
});
|
||
|
||
return result;
|
||
}
|
||
|
||
/**
|
||
* Remove a collection and clean up its documents.
|
||
* Uses collections.ts to remove from YAML config and cleans up database.
|
||
*/
|
||
export function removeCollection(db: Database, collectionName: string): { deletedDocs: number; cleanedHashes: number } {
|
||
// Delete documents from database
|
||
const docResult = db.prepare(`DELETE FROM documents WHERE collection = ?`).run(collectionName);
|
||
|
||
// Clean up orphaned content hashes
|
||
const cleanupResult = db.prepare(`
|
||
DELETE FROM content
|
||
WHERE hash NOT IN (SELECT DISTINCT hash FROM documents WHERE active = 1)
|
||
`).run();
|
||
|
||
// Remove from store_collections
|
||
deleteStoreCollection(db, collectionName);
|
||
|
||
return {
|
||
deletedDocs: docResult.changes,
|
||
cleanedHashes: cleanupResult.changes
|
||
};
|
||
}
|
||
|
||
/**
|
||
* Rename a collection.
|
||
* Updates both YAML config and database documents table.
|
||
*/
|
||
export function renameCollection(db: Database, oldName: string, newName: string): void {
|
||
// Update all documents with the new collection name in database
|
||
db.prepare(`UPDATE documents SET collection = ? WHERE collection = ?`)
|
||
.run(newName, oldName);
|
||
|
||
// Rename in store_collections
|
||
renameStoreCollection(db, oldName, newName);
|
||
}
|
||
|
||
// =============================================================================
|
||
// Context Management Operations
|
||
// =============================================================================
|
||
|
||
/**
|
||
* Insert or update a context for a specific collection and path prefix.
|
||
*/
|
||
export function insertContext(db: Database, collectionId: number, pathPrefix: string, context: string): void {
|
||
// Get collection name from ID
|
||
const coll = db.prepare(`SELECT name FROM collections WHERE id = ?`).get(collectionId) as { name: string } | null;
|
||
if (!coll) {
|
||
throw new Error(`Collection with id ${collectionId} not found`);
|
||
}
|
||
|
||
// Add context to store_collections
|
||
updateStoreContext(db, coll.name, pathPrefix, context);
|
||
}
|
||
|
||
/**
|
||
* Delete a context for a specific collection and path prefix.
|
||
* Returns the number of contexts deleted.
|
||
*/
|
||
export function deleteContext(db: Database, collectionName: string, pathPrefix: string): number {
|
||
// Remove context from store_collections
|
||
const success = removeStoreContext(db, collectionName, pathPrefix);
|
||
return success ? 1 : 0;
|
||
}
|
||
|
||
/**
|
||
* Delete all global contexts (contexts with empty path_prefix).
|
||
* Returns the number of contexts deleted.
|
||
*/
|
||
export function deleteGlobalContexts(db: Database): number {
|
||
let deletedCount = 0;
|
||
|
||
// Remove global context
|
||
setStoreGlobalContext(db, undefined);
|
||
deletedCount++;
|
||
|
||
// Remove root context (empty string) from all collections
|
||
const collections = getStoreCollections(db);
|
||
for (const coll of collections) {
|
||
const success = removeStoreContext(db, coll.name, '');
|
||
if (success) {
|
||
deletedCount++;
|
||
}
|
||
}
|
||
|
||
return deletedCount;
|
||
}
|
||
|
||
/**
|
||
* List all contexts, grouped by collection.
|
||
* Returns contexts ordered by collection name, then by path prefix length (longest first).
|
||
*/
|
||
export function listPathContexts(db: Database): { collection_name: string; path_prefix: string; context: string }[] {
|
||
const allContexts = getStoreContexts(db);
|
||
|
||
// Convert to expected format and sort
|
||
return allContexts.map(ctx => ({
|
||
collection_name: ctx.collection,
|
||
path_prefix: ctx.path,
|
||
context: ctx.context,
|
||
})).sort((a, b) => {
|
||
// Sort by collection name first
|
||
if (a.collection_name !== b.collection_name) {
|
||
return a.collection_name.localeCompare(b.collection_name);
|
||
}
|
||
// Then by path prefix length (longest first)
|
||
if (a.path_prefix.length !== b.path_prefix.length) {
|
||
return b.path_prefix.length - a.path_prefix.length;
|
||
}
|
||
// Then alphabetically
|
||
return a.path_prefix.localeCompare(b.path_prefix);
|
||
});
|
||
}
|
||
|
||
/**
|
||
* Get all collections (name only - from YAML config).
|
||
*/
|
||
export function getAllCollections(db: Database): { name: string }[] {
|
||
const collections = getStoreCollections(db);
|
||
return collections.map(c => ({ name: c.name }));
|
||
}
|
||
|
||
/**
|
||
* Check which collections don't have any context defined.
|
||
* Returns collections that have no context entries at all (not even root context).
|
||
*/
|
||
export function getCollectionsWithoutContext(db: Database): { name: string; pwd: string; doc_count: number }[] {
|
||
// Get all collections from DB
|
||
const allCollections = getStoreCollections(db);
|
||
|
||
// Filter to those without context
|
||
const collectionsWithoutContext: { name: string; pwd: string; doc_count: number }[] = [];
|
||
|
||
for (const coll of allCollections) {
|
||
// Check if collection has any context
|
||
if (!coll.context || Object.keys(coll.context).length === 0) {
|
||
// Get doc count from database
|
||
const stats = db.prepare(`
|
||
SELECT COUNT(d.id) as doc_count
|
||
FROM documents d
|
||
WHERE d.collection = ? AND d.active = 1
|
||
`).get(coll.name) as { doc_count: number } | null;
|
||
|
||
collectionsWithoutContext.push({
|
||
name: coll.name,
|
||
pwd: coll.path,
|
||
doc_count: stats?.doc_count || 0,
|
||
});
|
||
}
|
||
}
|
||
|
||
return collectionsWithoutContext.sort((a, b) => a.name.localeCompare(b.name));
|
||
}
|
||
|
||
/**
|
||
* Get top-level directories in a collection that don't have context.
|
||
* Useful for suggesting where context might be needed.
|
||
*/
|
||
export function getTopLevelPathsWithoutContext(db: Database, collectionName: string): string[] {
|
||
// Get all paths in the collection from database
|
||
const paths = db.prepare(`
|
||
SELECT DISTINCT path FROM documents
|
||
WHERE collection = ? AND active = 1
|
||
`).all(collectionName) as { path: string }[];
|
||
|
||
// Get existing contexts for this collection from DB
|
||
const dbColl = getStoreCollection(db, collectionName);
|
||
if (!dbColl) return [];
|
||
|
||
const contextPrefixes = new Set<string>();
|
||
if (dbColl.context) {
|
||
for (const prefix of Object.keys(dbColl.context)) {
|
||
contextPrefixes.add(prefix);
|
||
}
|
||
}
|
||
|
||
// Extract top-level directories (first path component)
|
||
const topLevelDirs = new Set<string>();
|
||
for (const { path } of paths) {
|
||
const parts = path.split('/').filter(Boolean);
|
||
if (parts.length > 1) {
|
||
const dir = parts[0];
|
||
if (dir) topLevelDirs.add(dir);
|
||
}
|
||
}
|
||
|
||
// Filter out directories that already have context (exact or parent)
|
||
const missing: string[] = [];
|
||
for (const dir of topLevelDirs) {
|
||
let hasContext = false;
|
||
|
||
// Check if this dir or any parent has context
|
||
for (const prefix of contextPrefixes) {
|
||
if (prefix === '' || prefix === dir || dir.startsWith(prefix + '/')) {
|
||
hasContext = true;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (!hasContext) {
|
||
missing.push(dir);
|
||
}
|
||
}
|
||
|
||
return missing.sort();
|
||
}
|
||
|
||
// =============================================================================
|
||
// FTS Search
|
||
// =============================================================================
|
||
|
||
function sanitizeFTS5Term(term: string): string {
|
||
return term.replace(/[^\p{L}\p{N}']/gu, '').toLowerCase();
|
||
}
|
||
|
||
/**
|
||
* Parse lex query syntax into FTS5 query.
|
||
*
|
||
* Supports:
|
||
* - Quoted phrases: "exact phrase" → "exact phrase" (exact match)
|
||
* - Negation: -term or -"phrase" → uses FTS5 NOT operator
|
||
* - Plain terms: term → "term"* (prefix match)
|
||
*
|
||
* FTS5 NOT is a binary operator: `term1 NOT term2` means "match term1 but not term2".
|
||
* So `-term` only works when there are also positive terms.
|
||
*
|
||
* Examples:
|
||
* performance -sports → "performance"* NOT "sports"*
|
||
* "machine learning" → "machine learning"
|
||
*/
|
||
function buildFTS5Query(query: string): string | null {
|
||
const positive: string[] = [];
|
||
const negative: string[] = [];
|
||
|
||
let i = 0;
|
||
const s = query.trim();
|
||
|
||
while (i < s.length) {
|
||
// Skip whitespace
|
||
while (i < s.length && /\s/.test(s[i]!)) i++;
|
||
if (i >= s.length) break;
|
||
|
||
// Check for negation prefix
|
||
const negated = s[i] === '-';
|
||
if (negated) i++;
|
||
|
||
// Check for quoted phrase
|
||
if (s[i] === '"') {
|
||
const start = i + 1;
|
||
i++;
|
||
while (i < s.length && s[i] !== '"') i++;
|
||
const phrase = s.slice(start, i).trim();
|
||
i++; // skip closing quote
|
||
if (phrase.length > 0) {
|
||
const sanitized = phrase.split(/\s+/).map(t => sanitizeFTS5Term(t)).filter(t => t).join(' ');
|
||
if (sanitized) {
|
||
const ftsPhrase = `"${sanitized}"`; // Exact phrase, no prefix match
|
||
if (negated) {
|
||
negative.push(ftsPhrase);
|
||
} else {
|
||
positive.push(ftsPhrase);
|
||
}
|
||
}
|
||
}
|
||
} else {
|
||
// Plain term (until whitespace or quote)
|
||
const start = i;
|
||
while (i < s.length && !/[\s"]/.test(s[i]!)) i++;
|
||
const term = s.slice(start, i);
|
||
|
||
const sanitized = sanitizeFTS5Term(term);
|
||
if (sanitized) {
|
||
const ftsTerm = `"${sanitized}"*`; // Prefix match
|
||
if (negated) {
|
||
negative.push(ftsTerm);
|
||
} else {
|
||
positive.push(ftsTerm);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
if (positive.length === 0 && negative.length === 0) return null;
|
||
|
||
// If only negative terms, we can't search (FTS5 NOT is binary)
|
||
if (positive.length === 0) return null;
|
||
|
||
// Join positive terms with AND
|
||
let result = positive.join(' AND ');
|
||
|
||
// Add NOT clause for negative terms
|
||
for (const neg of negative) {
|
||
result = `${result} NOT ${neg}`;
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
/**
|
||
* Validate that a vec/hyde query doesn't use lex-only syntax.
|
||
* Returns error message if invalid, null if valid.
|
||
*/
|
||
export function validateSemanticQuery(query: string): string | null {
|
||
// Check for negation syntax
|
||
if (/-\w/.test(query) || /-"/.test(query)) {
|
||
return 'Negation (-term) is not supported in vec/hyde queries. Use lex for exclusions.';
|
||
}
|
||
return null;
|
||
}
|
||
|
||
export function validateLexQuery(query: string): string | null {
|
||
if (/[\r\n]/.test(query)) {
|
||
return 'Lex queries must be a single line. Remove newline characters or split into separate lex: lines.';
|
||
}
|
||
const quoteCount = (query.match(/"/g) ?? []).length;
|
||
if (quoteCount % 2 === 1) {
|
||
return 'Lex query has an unmatched double quote ("). Add the closing quote or remove it.';
|
||
}
|
||
return null;
|
||
}
|
||
|
||
export function searchFTS(db: Database, query: string, limit: number = 20, collectionName?: string): SearchResult[] {
|
||
const ftsQuery = buildFTS5Query(query);
|
||
if (!ftsQuery) return [];
|
||
|
||
let sql = `
|
||
SELECT
|
||
'qmd://' || d.collection || '/' || d.path as filepath,
|
||
d.collection || '/' || d.path as display_path,
|
||
d.title,
|
||
content.doc as body,
|
||
d.hash,
|
||
bm25(documents_fts, 10.0, 1.0) as bm25_score
|
||
FROM documents_fts f
|
||
JOIN documents d ON d.id = f.rowid
|
||
JOIN content ON content.hash = d.hash
|
||
WHERE documents_fts MATCH ? AND d.active = 1
|
||
`;
|
||
const params: (string | number)[] = [ftsQuery];
|
||
|
||
if (collectionName) {
|
||
sql += ` AND d.collection = ?`;
|
||
params.push(String(collectionName));
|
||
}
|
||
|
||
// bm25 lower is better; sort ascending.
|
||
sql += ` ORDER BY bm25_score ASC LIMIT ?`;
|
||
params.push(limit);
|
||
|
||
const rows = db.prepare(sql).all(...params) as { filepath: string; display_path: string; title: string; body: string; hash: string; bm25_score: number }[];
|
||
return rows.map(row => {
|
||
const collectionName = row.filepath.split('//')[1]?.split('/')[0] || "";
|
||
// Convert bm25 (negative, lower is better) into a stable [0..1) score where higher is better.
|
||
// FTS5 BM25 scores are negative (e.g., -10 is strong, -2 is weak).
|
||
// |x| / (1 + |x|) maps: strong(-10)→0.91, medium(-2)→0.67, weak(-0.5)→0.33, none(0)→0.
|
||
// Monotonic and query-independent — no per-query normalization needed.
|
||
const score = Math.abs(row.bm25_score) / (1 + Math.abs(row.bm25_score));
|
||
return {
|
||
filepath: row.filepath,
|
||
displayPath: row.display_path,
|
||
title: row.title,
|
||
hash: row.hash,
|
||
docid: getDocid(row.hash),
|
||
collectionName,
|
||
modifiedAt: "", // Not available in FTS query
|
||
bodyLength: row.body.length,
|
||
body: row.body,
|
||
context: getContextForFile(db, row.filepath),
|
||
score,
|
||
source: "fts" as const,
|
||
};
|
||
});
|
||
}
|
||
|
||
// =============================================================================
|
||
// Vector Search
|
||
// =============================================================================
|
||
|
||
export async function searchVec(db: Database, query: string, model: string, limit: number = 20, collectionName?: string, session?: ILLMSession, precomputedEmbedding?: number[]): Promise<SearchResult[]> {
|
||
const tableExists = db.prepare(`SELECT name FROM sqlite_master WHERE type='table' AND name='vectors_vec'`).get();
|
||
if (!tableExists) return [];
|
||
|
||
const embedding = precomputedEmbedding ?? await getEmbedding(query, model, true, session);
|
||
if (!embedding) return [];
|
||
|
||
// IMPORTANT: We use a two-step query approach here because sqlite-vec virtual tables
|
||
// hang indefinitely when combined with JOINs in the same query. Do NOT try to
|
||
// "optimize" this by combining into a single query with JOINs - it will break.
|
||
// See: https://github.com/tobi/qmd/pull/23
|
||
|
||
// Step 1: Get vector matches from sqlite-vec (no JOINs allowed)
|
||
const vecResults = db.prepare(`
|
||
SELECT hash_seq, distance
|
||
FROM vectors_vec
|
||
WHERE embedding MATCH ? AND k = ?
|
||
`).all(new Float32Array(embedding), limit * 3) as { hash_seq: string; distance: number }[];
|
||
|
||
if (vecResults.length === 0) return [];
|
||
|
||
// Step 2: Get chunk info and document data
|
||
const hashSeqs = vecResults.map(r => r.hash_seq);
|
||
const distanceMap = new Map(vecResults.map(r => [r.hash_seq, r.distance]));
|
||
|
||
// Build query for document lookup
|
||
const placeholders = hashSeqs.map(() => '?').join(',');
|
||
let docSql = `
|
||
SELECT
|
||
cv.hash || '_' || cv.seq as hash_seq,
|
||
cv.hash,
|
||
cv.pos,
|
||
'qmd://' || d.collection || '/' || d.path as filepath,
|
||
d.collection || '/' || d.path as display_path,
|
||
d.title,
|
||
content.doc as body
|
||
FROM content_vectors cv
|
||
JOIN documents d ON d.hash = cv.hash AND d.active = 1
|
||
JOIN content ON content.hash = d.hash
|
||
WHERE cv.hash || '_' || cv.seq IN (${placeholders})
|
||
`;
|
||
const params: string[] = [...hashSeqs];
|
||
|
||
if (collectionName) {
|
||
docSql += ` AND d.collection = ?`;
|
||
params.push(collectionName);
|
||
}
|
||
|
||
const docRows = db.prepare(docSql).all(...params) as {
|
||
hash_seq: string; hash: string; pos: number; filepath: string;
|
||
display_path: string; title: string; body: string;
|
||
}[];
|
||
|
||
// Combine with distances and dedupe by filepath
|
||
const seen = new Map<string, { row: typeof docRows[0]; bestDist: number }>();
|
||
for (const row of docRows) {
|
||
const distance = distanceMap.get(row.hash_seq) ?? 1;
|
||
const existing = seen.get(row.filepath);
|
||
if (!existing || distance < existing.bestDist) {
|
||
seen.set(row.filepath, { row, bestDist: distance });
|
||
}
|
||
}
|
||
|
||
return Array.from(seen.values())
|
||
.sort((a, b) => a.bestDist - b.bestDist)
|
||
.slice(0, limit)
|
||
.map(({ row, bestDist }) => {
|
||
const collectionName = row.filepath.split('//')[1]?.split('/')[0] || "";
|
||
return {
|
||
filepath: row.filepath,
|
||
displayPath: row.display_path,
|
||
title: row.title,
|
||
hash: row.hash,
|
||
docid: getDocid(row.hash),
|
||
collectionName,
|
||
modifiedAt: "", // Not available in vec query
|
||
bodyLength: row.body.length,
|
||
body: row.body,
|
||
context: getContextForFile(db, row.filepath),
|
||
score: 1 - bestDist, // Cosine similarity = 1 - cosine distance
|
||
source: "vec" as const,
|
||
chunkPos: row.pos,
|
||
};
|
||
});
|
||
}
|
||
|
||
// =============================================================================
|
||
// Embeddings
|
||
// =============================================================================
|
||
|
||
async function getEmbedding(text: string, model: string, isQuery: boolean, session?: ILLMSession, llmOverride?: LlamaCpp): Promise<number[] | null> {
|
||
// Format text using the appropriate prompt template
|
||
const formattedText = isQuery ? formatQueryForEmbedding(text, model) : formatDocForEmbedding(text, undefined, model);
|
||
const result = session
|
||
? await session.embed(formattedText, { model, isQuery })
|
||
: await (llmOverride ?? getDefaultLlamaCpp()).embed(formattedText, { model, isQuery });
|
||
return result?.embedding || null;
|
||
}
|
||
|
||
/**
|
||
* Get all unique content hashes that need embeddings (from active documents).
|
||
* Returns hash, document body, and a sample path for display purposes.
|
||
*/
|
||
export function getHashesForEmbedding(db: Database): { hash: string; body: string; path: string }[] {
|
||
return db.prepare(`
|
||
SELECT d.hash, c.doc as body, MIN(d.path) as path
|
||
FROM documents d
|
||
JOIN content c ON d.hash = c.hash
|
||
LEFT JOIN content_vectors v ON d.hash = v.hash AND v.seq = 0
|
||
WHERE d.active = 1 AND v.hash IS NULL
|
||
GROUP BY d.hash
|
||
`).all() as { hash: string; body: string; path: string }[];
|
||
}
|
||
|
||
/**
|
||
* Clear all embeddings from the database (force re-index).
|
||
* Deletes all rows from content_vectors and drops the vectors_vec table.
|
||
*/
|
||
export function clearAllEmbeddings(db: Database): void {
|
||
db.exec(`DELETE FROM content_vectors`);
|
||
db.exec(`DROP TABLE IF EXISTS vectors_vec`);
|
||
}
|
||
|
||
/**
|
||
* Insert a single embedding into both content_vectors and vectors_vec tables.
|
||
* The hash_seq key is formatted as "hash_seq" for the vectors_vec table.
|
||
*/
|
||
export function insertEmbedding(
|
||
db: Database,
|
||
hash: string,
|
||
seq: number,
|
||
pos: number,
|
||
embedding: Float32Array,
|
||
model: string,
|
||
embeddedAt: string
|
||
): void {
|
||
const hashSeq = `${hash}_${seq}`;
|
||
const insertVecStmt = db.prepare(`INSERT OR REPLACE INTO vectors_vec (hash_seq, embedding) VALUES (?, ?)`);
|
||
const insertContentVectorStmt = db.prepare(`INSERT OR REPLACE INTO content_vectors (hash, seq, pos, model, embedded_at) VALUES (?, ?, ?, ?, ?)`);
|
||
|
||
insertVecStmt.run(hashSeq, embedding);
|
||
insertContentVectorStmt.run(hash, seq, pos, model, embeddedAt);
|
||
}
|
||
|
||
// =============================================================================
|
||
// Query expansion
|
||
// =============================================================================
|
||
|
||
export async function expandQuery(query: string, model: string = DEFAULT_QUERY_MODEL, db: Database, intent?: string, llmOverride?: LlamaCpp): Promise<ExpandedQuery[]> {
|
||
// Check cache first — stored as JSON preserving types
|
||
const cacheKey = getCacheKey("expandQuery", { query, model, ...(intent && { intent }) });
|
||
const cached = getCachedResult(db, cacheKey);
|
||
if (cached) {
|
||
try {
|
||
const parsed = JSON.parse(cached) as any[];
|
||
// Migrate old cache format: { type, text } → { type, query }
|
||
if (parsed.length > 0 && parsed[0].query) {
|
||
return parsed as ExpandedQuery[];
|
||
} else if (parsed.length > 0 && parsed[0].text) {
|
||
return parsed.map((r: any) => ({ type: r.type, query: r.text }));
|
||
}
|
||
} catch {
|
||
// Old cache format (pre-typed, newline-separated text) — re-expand
|
||
}
|
||
}
|
||
|
||
const llm = llmOverride ?? getDefaultLlamaCpp();
|
||
// Note: LlamaCpp uses hardcoded model, model parameter is ignored
|
||
const results = await llm.expandQuery(query, { intent });
|
||
|
||
// Map Queryable[] → ExpandedQuery[] (same shape, decoupled from llm.ts internals).
|
||
// Filter out entries that duplicate the original query text.
|
||
const expanded: ExpandedQuery[] = results
|
||
.filter(r => r.text !== query)
|
||
.map(r => ({ type: r.type, query: r.text }));
|
||
|
||
if (expanded.length > 0) {
|
||
setCachedResult(db, cacheKey, JSON.stringify(expanded));
|
||
}
|
||
|
||
return expanded;
|
||
}
|
||
|
||
// =============================================================================
|
||
// Reranking
|
||
// =============================================================================
|
||
|
||
export async function rerank(query: string, documents: { file: string; text: string }[], model: string = DEFAULT_RERANK_MODEL, db: Database, intent?: string, llmOverride?: LlamaCpp): Promise<{ file: string; score: number }[]> {
|
||
// Prepend intent to rerank query so the reranker scores with domain context
|
||
const rerankQuery = intent ? `${intent}\n\n${query}` : query;
|
||
|
||
const cachedResults: Map<string, number> = new Map();
|
||
const uncachedDocsByChunk: Map<string, RerankDocument> = new Map();
|
||
|
||
// Check cache for each document
|
||
// Cache key includes chunk text — different queries can select different chunks
|
||
// from the same file, and the reranker score depends on which chunk was sent.
|
||
// File path is excluded from the new cache key because the reranker score
|
||
// depends on the chunk content, not where it came from.
|
||
for (const doc of documents) {
|
||
const cacheKey = getCacheKey("rerank", { query: rerankQuery, model, chunk: doc.text });
|
||
const legacyCacheKey = getCacheKey("rerank", { query, file: doc.file, model, chunk: doc.text });
|
||
const cached = getCachedResult(db, cacheKey) ?? getCachedResult(db, legacyCacheKey);
|
||
if (cached !== null) {
|
||
cachedResults.set(doc.text, parseFloat(cached));
|
||
} else {
|
||
uncachedDocsByChunk.set(doc.text, { file: doc.file, text: doc.text });
|
||
}
|
||
}
|
||
|
||
// Rerank uncached documents using LlamaCpp
|
||
if (uncachedDocsByChunk.size > 0) {
|
||
const llm = llmOverride ?? getDefaultLlamaCpp();
|
||
const uncachedDocs = [...uncachedDocsByChunk.values()];
|
||
const rerankResult = await llm.rerank(rerankQuery, uncachedDocs, { model });
|
||
|
||
// Cache results by chunk text so identical chunks across files are scored once.
|
||
const textByFile = new Map(uncachedDocs.map(d => [d.file, d.text]));
|
||
for (const result of rerankResult.results) {
|
||
const chunk = textByFile.get(result.file) || "";
|
||
const cacheKey = getCacheKey("rerank", { query: rerankQuery, model, chunk });
|
||
setCachedResult(db, cacheKey, result.score.toString());
|
||
cachedResults.set(chunk, result.score);
|
||
}
|
||
}
|
||
|
||
// Return all results sorted by score
|
||
return documents
|
||
.map(doc => ({ file: doc.file, score: cachedResults.get(doc.text) || 0 }))
|
||
.sort((a, b) => b.score - a.score);
|
||
}
|
||
|
||
// =============================================================================
|
||
// Reciprocal Rank Fusion
|
||
// =============================================================================
|
||
|
||
export function reciprocalRankFusion(
|
||
resultLists: RankedResult[][],
|
||
weights: number[] = [],
|
||
k: number = 60
|
||
): RankedResult[] {
|
||
const scores = new Map<string, { result: RankedResult; rrfScore: number; topRank: number }>();
|
||
|
||
for (let listIdx = 0; listIdx < resultLists.length; listIdx++) {
|
||
const list = resultLists[listIdx];
|
||
if (!list) continue;
|
||
const weight = weights[listIdx] ?? 1.0;
|
||
|
||
for (let rank = 0; rank < list.length; rank++) {
|
||
const result = list[rank];
|
||
if (!result) continue;
|
||
const rrfContribution = weight / (k + rank + 1);
|
||
const existing = scores.get(result.file);
|
||
|
||
if (existing) {
|
||
existing.rrfScore += rrfContribution;
|
||
existing.topRank = Math.min(existing.topRank, rank);
|
||
} else {
|
||
scores.set(result.file, {
|
||
result,
|
||
rrfScore: rrfContribution,
|
||
topRank: rank,
|
||
});
|
||
}
|
||
}
|
||
}
|
||
|
||
// Top-rank bonus
|
||
for (const entry of scores.values()) {
|
||
if (entry.topRank === 0) {
|
||
entry.rrfScore += 0.05;
|
||
} else if (entry.topRank <= 2) {
|
||
entry.rrfScore += 0.02;
|
||
}
|
||
}
|
||
|
||
return Array.from(scores.values())
|
||
.sort((a, b) => b.rrfScore - a.rrfScore)
|
||
.map(e => ({ ...e.result, score: e.rrfScore }));
|
||
}
|
||
|
||
/**
|
||
* Build per-document RRF contribution traces for explain/debug output.
|
||
*/
|
||
export function buildRrfTrace(
|
||
resultLists: RankedResult[][],
|
||
weights: number[] = [],
|
||
listMeta: RankedListMeta[] = [],
|
||
k: number = 60
|
||
): Map<string, RRFScoreTrace> {
|
||
const traces = new Map<string, RRFScoreTrace>();
|
||
|
||
for (let listIdx = 0; listIdx < resultLists.length; listIdx++) {
|
||
const list = resultLists[listIdx];
|
||
if (!list) continue;
|
||
const weight = weights[listIdx] ?? 1.0;
|
||
const meta = listMeta[listIdx] ?? {
|
||
source: "fts",
|
||
queryType: "original",
|
||
query: "",
|
||
} as const;
|
||
|
||
for (let rank0 = 0; rank0 < list.length; rank0++) {
|
||
const result = list[rank0];
|
||
if (!result) continue;
|
||
const rank = rank0 + 1; // 1-indexed rank for explain output
|
||
const contribution = weight / (k + rank);
|
||
const existing = traces.get(result.file);
|
||
|
||
const detail: RRFContributionTrace = {
|
||
listIndex: listIdx,
|
||
source: meta.source,
|
||
queryType: meta.queryType,
|
||
query: meta.query,
|
||
rank,
|
||
weight,
|
||
backendScore: result.score,
|
||
rrfContribution: contribution,
|
||
};
|
||
|
||
if (existing) {
|
||
existing.baseScore += contribution;
|
||
existing.topRank = Math.min(existing.topRank, rank);
|
||
existing.contributions.push(detail);
|
||
} else {
|
||
traces.set(result.file, {
|
||
contributions: [detail],
|
||
baseScore: contribution,
|
||
topRank: rank,
|
||
topRankBonus: 0,
|
||
totalScore: 0,
|
||
});
|
||
}
|
||
}
|
||
}
|
||
|
||
for (const trace of traces.values()) {
|
||
let bonus = 0;
|
||
if (trace.topRank === 1) bonus = 0.05;
|
||
else if (trace.topRank <= 3) bonus = 0.02;
|
||
trace.topRankBonus = bonus;
|
||
trace.totalScore = trace.baseScore + bonus;
|
||
}
|
||
|
||
return traces;
|
||
}
|
||
|
||
// =============================================================================
|
||
// Document retrieval
|
||
// =============================================================================
|
||
|
||
type DbDocRow = {
|
||
virtual_path: string;
|
||
display_path: string;
|
||
title: string;
|
||
hash: string;
|
||
collection: string;
|
||
path: string;
|
||
modified_at: string;
|
||
body_length: number;
|
||
body?: string;
|
||
};
|
||
|
||
/**
|
||
* Find a document by filename/path, docid (#hash), or with fuzzy matching.
|
||
* Returns document metadata without body by default.
|
||
*
|
||
* Supports:
|
||
* - Virtual paths: qmd://collection/path/to/file.md
|
||
* - Absolute paths: /path/to/file.md
|
||
* - Relative paths: path/to/file.md
|
||
* - Short docid: #abc123 (first 6 chars of hash)
|
||
*/
|
||
export function findDocument(db: Database, filename: string, options: { includeBody?: boolean } = {}): DocumentResult | DocumentNotFound {
|
||
let filepath = filename;
|
||
const colonMatch = filepath.match(/:(\d+)$/);
|
||
if (colonMatch) {
|
||
filepath = filepath.slice(0, -colonMatch[0].length);
|
||
}
|
||
|
||
// Check if this is a docid lookup (#abc123, abc123, "#abc123", "abc123", etc.)
|
||
if (isDocid(filepath)) {
|
||
const docidMatch = findDocumentByDocid(db, filepath);
|
||
if (docidMatch) {
|
||
filepath = docidMatch.filepath;
|
||
} else {
|
||
return { error: "not_found", query: filename, similarFiles: [] };
|
||
}
|
||
}
|
||
|
||
if (filepath.startsWith('~/')) {
|
||
filepath = homedir() + filepath.slice(1);
|
||
}
|
||
|
||
const bodyCol = options.includeBody ? `, content.doc as body` : ``;
|
||
|
||
// Build computed columns
|
||
// Note: absoluteFilepath is computed from YAML collections after query
|
||
const selectCols = `
|
||
'qmd://' || d.collection || '/' || d.path as virtual_path,
|
||
d.collection || '/' || d.path as display_path,
|
||
d.title,
|
||
d.hash,
|
||
d.collection,
|
||
d.modified_at,
|
||
LENGTH(content.doc) as body_length
|
||
${bodyCol}
|
||
`;
|
||
|
||
// Try to match by virtual path first
|
||
let doc = db.prepare(`
|
||
SELECT ${selectCols}
|
||
FROM documents d
|
||
JOIN content ON content.hash = d.hash
|
||
WHERE 'qmd://' || d.collection || '/' || d.path = ? AND d.active = 1
|
||
`).get(filepath) as DbDocRow | null;
|
||
|
||
// Try fuzzy match by virtual path
|
||
if (!doc) {
|
||
doc = db.prepare(`
|
||
SELECT ${selectCols}
|
||
FROM documents d
|
||
JOIN content ON content.hash = d.hash
|
||
WHERE 'qmd://' || d.collection || '/' || d.path LIKE ? AND d.active = 1
|
||
LIMIT 1
|
||
`).get(`%${filepath}`) as DbDocRow | null;
|
||
}
|
||
|
||
// Try to match by absolute path (requires looking up collection paths from DB)
|
||
if (!doc && !filepath.startsWith('qmd://')) {
|
||
const collections = getStoreCollections(db);
|
||
for (const coll of collections) {
|
||
let relativePath: string | null = null;
|
||
|
||
// If filepath is absolute and starts with collection path, extract relative part
|
||
if (filepath.startsWith(coll.path + '/')) {
|
||
relativePath = filepath.slice(coll.path.length + 1);
|
||
}
|
||
// Otherwise treat filepath as relative to collection
|
||
else if (!filepath.startsWith('/')) {
|
||
relativePath = filepath;
|
||
}
|
||
|
||
if (relativePath) {
|
||
doc = db.prepare(`
|
||
SELECT ${selectCols}
|
||
FROM documents d
|
||
JOIN content ON content.hash = d.hash
|
||
WHERE d.collection = ? AND d.path = ? AND d.active = 1
|
||
`).get(coll.name, relativePath) as DbDocRow | null;
|
||
if (doc) break;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (!doc) {
|
||
const similar = findSimilarFiles(db, filepath, 5, 5);
|
||
return { error: "not_found", query: filename, similarFiles: similar };
|
||
}
|
||
|
||
// Get context using virtual path
|
||
const virtualPath = doc.virtual_path || `qmd://${doc.collection}/${doc.display_path}`;
|
||
const context = getContextForFile(db, virtualPath);
|
||
|
||
return {
|
||
filepath: virtualPath,
|
||
displayPath: doc.display_path,
|
||
title: doc.title,
|
||
context,
|
||
hash: doc.hash,
|
||
docid: getDocid(doc.hash),
|
||
collectionName: doc.collection,
|
||
modifiedAt: doc.modified_at,
|
||
bodyLength: doc.body_length,
|
||
...(options.includeBody && doc.body !== undefined && { body: doc.body }),
|
||
};
|
||
}
|
||
|
||
/**
|
||
* Get the body content for a document
|
||
* Optionally slice by line range
|
||
*/
|
||
export function getDocumentBody(db: Database, doc: DocumentResult | { filepath: string }, fromLine?: number, maxLines?: number): string | null {
|
||
const filepath = doc.filepath;
|
||
|
||
// Try to resolve document by filepath (absolute or virtual)
|
||
let row: { body: string } | null = null;
|
||
|
||
// Try virtual path first
|
||
if (filepath.startsWith('qmd://')) {
|
||
row = db.prepare(`
|
||
SELECT content.doc as body
|
||
FROM documents d
|
||
JOIN content ON content.hash = d.hash
|
||
WHERE 'qmd://' || d.collection || '/' || d.path = ? AND d.active = 1
|
||
`).get(filepath) as { body: string } | null;
|
||
}
|
||
|
||
// Try absolute path by looking up in DB store_collections
|
||
if (!row) {
|
||
const collections = getStoreCollections(db);
|
||
for (const coll of collections) {
|
||
if (filepath.startsWith(coll.path + '/')) {
|
||
const relativePath = filepath.slice(coll.path.length + 1);
|
||
row = db.prepare(`
|
||
SELECT content.doc as body
|
||
FROM documents d
|
||
JOIN content ON content.hash = d.hash
|
||
WHERE d.collection = ? AND d.path = ? AND d.active = 1
|
||
`).get(coll.name, relativePath) as { body: string } | null;
|
||
if (row) break;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (!row) return null;
|
||
|
||
let body = row.body;
|
||
if (fromLine !== undefined || maxLines !== undefined) {
|
||
const lines = body.split('\n');
|
||
const start = (fromLine || 1) - 1;
|
||
const end = maxLines !== undefined ? start + maxLines : lines.length;
|
||
body = lines.slice(start, end).join('\n');
|
||
}
|
||
|
||
return body;
|
||
}
|
||
|
||
/**
|
||
* Find multiple documents by glob pattern or comma-separated list
|
||
* Returns documents without body by default (use getDocumentBody to load)
|
||
*/
|
||
export function findDocuments(
|
||
db: Database,
|
||
pattern: string,
|
||
options: { includeBody?: boolean; maxBytes?: number } = {}
|
||
): { docs: MultiGetResult[]; errors: string[] } {
|
||
const isCommaSeparated = pattern.includes(',') && !pattern.includes('*') && !pattern.includes('?');
|
||
const errors: string[] = [];
|
||
const maxBytes = options.maxBytes ?? DEFAULT_MULTI_GET_MAX_BYTES;
|
||
|
||
const bodyCol = options.includeBody ? `, content.doc as body` : ``;
|
||
const selectCols = `
|
||
'qmd://' || d.collection || '/' || d.path as virtual_path,
|
||
d.collection || '/' || d.path as display_path,
|
||
d.title,
|
||
d.hash,
|
||
d.collection,
|
||
d.modified_at,
|
||
LENGTH(content.doc) as body_length
|
||
${bodyCol}
|
||
`;
|
||
|
||
let fileRows: DbDocRow[];
|
||
|
||
if (isCommaSeparated) {
|
||
const names = pattern.split(',').map(s => s.trim()).filter(Boolean);
|
||
fileRows = [];
|
||
for (const name of names) {
|
||
let doc = db.prepare(`
|
||
SELECT ${selectCols}
|
||
FROM documents d
|
||
JOIN content ON content.hash = d.hash
|
||
WHERE 'qmd://' || d.collection || '/' || d.path = ? AND d.active = 1
|
||
`).get(name) as DbDocRow | null;
|
||
if (!doc) {
|
||
doc = db.prepare(`
|
||
SELECT ${selectCols}
|
||
FROM documents d
|
||
JOIN content ON content.hash = d.hash
|
||
WHERE 'qmd://' || d.collection || '/' || d.path LIKE ? AND d.active = 1
|
||
LIMIT 1
|
||
`).get(`%${name}`) as DbDocRow | null;
|
||
}
|
||
if (doc) {
|
||
fileRows.push(doc);
|
||
} else {
|
||
const similar = findSimilarFiles(db, name, 5, 3);
|
||
let msg = `File not found: ${name}`;
|
||
if (similar.length > 0) {
|
||
msg += ` (did you mean: ${similar.join(', ')}?)`;
|
||
}
|
||
errors.push(msg);
|
||
}
|
||
}
|
||
} else {
|
||
// Glob pattern match
|
||
const matched = matchFilesByGlob(db, pattern);
|
||
if (matched.length === 0) {
|
||
errors.push(`No files matched pattern: ${pattern}`);
|
||
return { docs: [], errors };
|
||
}
|
||
const virtualPaths = matched.map(m => m.filepath);
|
||
const placeholders = virtualPaths.map(() => '?').join(',');
|
||
fileRows = db.prepare(`
|
||
SELECT ${selectCols}
|
||
FROM documents d
|
||
JOIN content ON content.hash = d.hash
|
||
WHERE 'qmd://' || d.collection || '/' || d.path IN (${placeholders}) AND d.active = 1
|
||
`).all(...virtualPaths) as DbDocRow[];
|
||
}
|
||
|
||
const results: MultiGetResult[] = [];
|
||
|
||
for (const row of fileRows) {
|
||
// Get context using virtual path
|
||
const virtualPath = row.virtual_path || `qmd://${row.collection}/${row.display_path}`;
|
||
const context = getContextForFile(db, virtualPath);
|
||
|
||
if (row.body_length > maxBytes) {
|
||
results.push({
|
||
doc: { filepath: virtualPath, displayPath: row.display_path },
|
||
skipped: true,
|
||
skipReason: `File too large (${Math.round(row.body_length / 1024)}KB > ${Math.round(maxBytes / 1024)}KB)`,
|
||
});
|
||
continue;
|
||
}
|
||
|
||
results.push({
|
||
doc: {
|
||
filepath: virtualPath,
|
||
displayPath: row.display_path,
|
||
title: row.title || row.display_path.split('/').pop() || row.display_path,
|
||
context,
|
||
hash: row.hash,
|
||
docid: getDocid(row.hash),
|
||
collectionName: row.collection,
|
||
modifiedAt: row.modified_at,
|
||
bodyLength: row.body_length,
|
||
...(options.includeBody && row.body !== undefined && { body: row.body }),
|
||
},
|
||
skipped: false,
|
||
});
|
||
}
|
||
|
||
return { docs: results, errors };
|
||
}
|
||
|
||
// =============================================================================
|
||
// Status
|
||
// =============================================================================
|
||
|
||
export function getStatus(db: Database): IndexStatus {
|
||
// DB is source of truth for collections — config provides supplementary metadata
|
||
const dbCollections = db.prepare(`
|
||
SELECT
|
||
collection as name,
|
||
COUNT(*) as active_count,
|
||
MAX(modified_at) as last_doc_update
|
||
FROM documents
|
||
WHERE active = 1
|
||
GROUP BY collection
|
||
`).all() as { name: string; active_count: number; last_doc_update: string | null }[];
|
||
|
||
// Build a lookup from store_collections for path/pattern metadata
|
||
const storeCollections = getStoreCollections(db);
|
||
const configLookup = new Map(storeCollections.map(c => [c.name, { path: c.path, pattern: c.pattern }]));
|
||
|
||
const collections: CollectionInfo[] = dbCollections.map(row => {
|
||
const config = configLookup.get(row.name);
|
||
return {
|
||
name: row.name,
|
||
path: config?.path ?? null,
|
||
pattern: config?.pattern ?? null,
|
||
documents: row.active_count,
|
||
lastUpdated: row.last_doc_update || new Date().toISOString(),
|
||
};
|
||
});
|
||
|
||
// Sort by last update time (most recent first)
|
||
collections.sort((a, b) => {
|
||
if (!a.lastUpdated) return 1;
|
||
if (!b.lastUpdated) return -1;
|
||
return new Date(b.lastUpdated).getTime() - new Date(a.lastUpdated).getTime();
|
||
});
|
||
|
||
const totalDocs = (db.prepare(`SELECT COUNT(*) as c FROM documents WHERE active = 1`).get() as { c: number }).c;
|
||
const needsEmbedding = getHashesNeedingEmbedding(db);
|
||
const hasVectors = !!db.prepare(`SELECT name FROM sqlite_master WHERE type='table' AND name='vectors_vec'`).get();
|
||
|
||
return {
|
||
totalDocuments: totalDocs,
|
||
needsEmbedding,
|
||
hasVectorIndex: hasVectors,
|
||
collections,
|
||
};
|
||
}
|
||
|
||
// =============================================================================
|
||
// Snippet extraction
|
||
// =============================================================================
|
||
|
||
export type SnippetResult = {
|
||
line: number; // 1-indexed line number of best match
|
||
snippet: string; // The snippet text with diff-style header
|
||
linesBefore: number; // Lines in document before snippet
|
||
linesAfter: number; // Lines in document after snippet
|
||
snippetLines: number; // Number of lines in snippet
|
||
};
|
||
|
||
/** Weight for intent terms relative to query terms (1.0) in snippet scoring */
|
||
export const INTENT_WEIGHT_SNIPPET = 0.3;
|
||
|
||
/** Weight for intent terms relative to query terms (1.0) in chunk selection */
|
||
export const INTENT_WEIGHT_CHUNK = 0.5;
|
||
|
||
// Common stop words filtered from intent strings before tokenization.
|
||
// Seeded from finetune/reward.py KEY_TERM_STOPWORDS, extended with common
|
||
// 2-3 char function words so the length threshold can drop to >1 and let
|
||
// short domain terms (API, SQL, LLM, CPU, CDN, …) survive.
|
||
const INTENT_STOP_WORDS = new Set([
|
||
// 2-char function words
|
||
"am", "an", "as", "at", "be", "by", "do", "he", "if",
|
||
"in", "is", "it", "me", "my", "no", "of", "on", "or", "so",
|
||
"to", "up", "us", "we",
|
||
// 3-char function words
|
||
"all", "and", "any", "are", "but", "can", "did", "for", "get",
|
||
"has", "her", "him", "his", "how", "its", "let", "may", "not",
|
||
"our", "out", "the", "too", "was", "who", "why", "you",
|
||
// 4+ char common words
|
||
"also", "does", "find", "from", "have", "into", "more", "need",
|
||
"show", "some", "tell", "that", "them", "this", "want", "what",
|
||
"when", "will", "with", "your",
|
||
// Search-context noise
|
||
"about", "looking", "notes", "search", "where", "which",
|
||
]);
|
||
|
||
/**
|
||
* Extract meaningful terms from an intent string, filtering stop words and punctuation.
|
||
* Uses Unicode-aware punctuation stripping so domain terms like "API" survive.
|
||
* Returns lowercase terms suitable for text matching.
|
||
*/
|
||
export function extractIntentTerms(intent: string): string[] {
|
||
return intent.toLowerCase().split(/\s+/)
|
||
.map(t => t.replace(/^[^\p{L}\p{N}]+|[^\p{L}\p{N}]+$/gu, ""))
|
||
.filter(t => t.length > 1 && !INTENT_STOP_WORDS.has(t));
|
||
}
|
||
|
||
export function extractSnippet(body: string, query: string, maxLen = 500, chunkPos?: number, chunkLen?: number, intent?: string): SnippetResult {
|
||
const totalLines = body.split('\n').length;
|
||
let searchBody = body;
|
||
let lineOffset = 0;
|
||
|
||
if (chunkPos && chunkPos > 0) {
|
||
// Search within the chunk region, with some padding for context
|
||
// Use provided chunkLen or fall back to max chunk size (covers variable-length chunks)
|
||
const searchLen = chunkLen || CHUNK_SIZE_CHARS;
|
||
const contextStart = Math.max(0, chunkPos - 100);
|
||
const contextEnd = Math.min(body.length, chunkPos + searchLen + 100);
|
||
searchBody = body.slice(contextStart, contextEnd);
|
||
if (contextStart > 0) {
|
||
lineOffset = body.slice(0, contextStart).split('\n').length - 1;
|
||
}
|
||
}
|
||
|
||
const lines = searchBody.split('\n');
|
||
const queryTerms = query.toLowerCase().split(/\s+/).filter(t => t.length > 0);
|
||
const intentTerms = intent ? extractIntentTerms(intent) : [];
|
||
let bestLine = 0, bestScore = -1;
|
||
|
||
for (let i = 0; i < lines.length; i++) {
|
||
const lineLower = (lines[i] ?? "").toLowerCase();
|
||
let score = 0;
|
||
for (const term of queryTerms) {
|
||
if (lineLower.includes(term)) score += 1.0;
|
||
}
|
||
for (const term of intentTerms) {
|
||
if (lineLower.includes(term)) score += INTENT_WEIGHT_SNIPPET;
|
||
}
|
||
if (score > bestScore) {
|
||
bestScore = score;
|
||
bestLine = i;
|
||
}
|
||
}
|
||
|
||
const start = Math.max(0, bestLine - 1);
|
||
const end = Math.min(lines.length, bestLine + 3);
|
||
const snippetLines = lines.slice(start, end);
|
||
let snippetText = snippetLines.join('\n');
|
||
|
||
// If we focused on a chunk window and it produced an empty/whitespace-only snippet,
|
||
// fall back to a full-document snippet so we always show something useful.
|
||
if (chunkPos && chunkPos > 0 && snippetText.trim().length === 0) {
|
||
return extractSnippet(body, query, maxLen, undefined, undefined, intent);
|
||
}
|
||
|
||
if (snippetText.length > maxLen) snippetText = snippetText.substring(0, maxLen - 3) + "...";
|
||
|
||
const absoluteStart = lineOffset + start + 1; // 1-indexed
|
||
const snippetLineCount = snippetLines.length;
|
||
const linesBefore = absoluteStart - 1;
|
||
const linesAfter = totalLines - (absoluteStart + snippetLineCount - 1);
|
||
|
||
// Format with diff-style header: @@ -start,count @@ (linesBefore before, linesAfter after)
|
||
const header = `@@ -${absoluteStart},${snippetLineCount} @@ (${linesBefore} before, ${linesAfter} after)`;
|
||
const snippet = `${header}\n${snippetText}`;
|
||
|
||
return {
|
||
line: lineOffset + bestLine + 1,
|
||
snippet,
|
||
linesBefore,
|
||
linesAfter,
|
||
snippetLines: snippetLineCount,
|
||
};
|
||
}
|
||
|
||
// =============================================================================
|
||
// Shared helpers (used by both CLI and MCP)
|
||
// =============================================================================
|
||
|
||
/**
|
||
* Add line numbers to text content.
|
||
* Each line becomes: "{lineNum}: {content}"
|
||
*/
|
||
export function addLineNumbers(text: string, startLine: number = 1): string {
|
||
const lines = text.split('\n');
|
||
return lines.map((line, i) => `${startLine + i}: ${line}`).join('\n');
|
||
}
|
||
|
||
// =============================================================================
|
||
// Shared search orchestration
|
||
//
|
||
// hybridQuery() and vectorSearchQuery() are standalone functions (not Store
|
||
// methods) because they are orchestration over primitives — same rationale as
|
||
// reciprocalRankFusion(). They take a Store as first argument so both CLI
|
||
// and MCP can share the identical pipeline.
|
||
// =============================================================================
|
||
|
||
/**
|
||
* Optional progress hooks for search orchestration.
|
||
* CLI wires these to stderr for user feedback; MCP leaves them unset.
|
||
*/
|
||
export interface SearchHooks {
|
||
/** BM25 probe found strong signal — expansion will be skipped */
|
||
onStrongSignal?: (topScore: number) => void;
|
||
/** Query expansion starting */
|
||
onExpandStart?: () => void;
|
||
/** Query expansion complete. Empty array = strong signal skip. elapsedMs = time taken. */
|
||
onExpand?: (original: string, expanded: ExpandedQuery[], elapsedMs: number) => void;
|
||
/** Embedding starting (vec/hyde queries) */
|
||
onEmbedStart?: (count: number) => void;
|
||
/** Embedding complete */
|
||
onEmbedDone?: (elapsedMs: number) => void;
|
||
/** Reranking is about to start */
|
||
onRerankStart?: (chunkCount: number) => void;
|
||
/** Reranking finished */
|
||
onRerankDone?: (elapsedMs: number) => void;
|
||
}
|
||
|
||
export interface HybridQueryOptions {
|
||
collection?: string;
|
||
limit?: number; // default 10
|
||
minScore?: number; // default 0
|
||
candidateLimit?: number; // default RERANK_CANDIDATE_LIMIT
|
||
explain?: boolean; // include backend/RRF/rerank score traces
|
||
intent?: string; // domain intent hint for disambiguation
|
||
skipRerank?: boolean; // skip LLM reranking, use only RRF scores
|
||
hooks?: SearchHooks;
|
||
}
|
||
|
||
export interface HybridQueryResult {
|
||
file: string; // internal filepath (qmd://collection/path)
|
||
displayPath: string;
|
||
title: string;
|
||
body: string; // full document body (for snippet extraction)
|
||
bestChunk: string; // best chunk text
|
||
bestChunkPos: number; // char offset of best chunk in body
|
||
score: number; // blended score (full precision)
|
||
context: string | null; // user-set context
|
||
docid: string; // content hash prefix (6 chars)
|
||
explain?: HybridQueryExplain;
|
||
}
|
||
|
||
export type RankedListMeta = {
|
||
source: "fts" | "vec";
|
||
queryType: "original" | "lex" | "vec" | "hyde";
|
||
query: string;
|
||
};
|
||
|
||
/**
|
||
* Hybrid search: BM25 + vector + query expansion + RRF + chunked reranking.
|
||
*
|
||
* Pipeline:
|
||
* 1. BM25 probe → skip expansion if strong signal
|
||
* 2. expandQuery() → typed query variants (lex/vec/hyde)
|
||
* 3. Type-routed search: original→vector, lex→FTS, vec/hyde→vector
|
||
* 4. RRF fusion → slice to candidateLimit
|
||
* 5. chunkDocument() + keyword-best-chunk selection
|
||
* 6. rerank on chunks (NOT full bodies — O(tokens) trap)
|
||
* 7. Position-aware score blending (RRF rank × reranker score)
|
||
* 8. Dedup by file, filter by minScore, slice to limit
|
||
*/
|
||
export async function hybridQuery(
|
||
store: Store,
|
||
query: string,
|
||
options?: HybridQueryOptions
|
||
): Promise<HybridQueryResult[]> {
|
||
const limit = options?.limit ?? 10;
|
||
const minScore = options?.minScore ?? 0;
|
||
const candidateLimit = options?.candidateLimit ?? RERANK_CANDIDATE_LIMIT;
|
||
const collection = options?.collection;
|
||
const explain = options?.explain ?? false;
|
||
const intent = options?.intent;
|
||
const skipRerank = options?.skipRerank ?? false;
|
||
const hooks = options?.hooks;
|
||
|
||
const rankedLists: RankedResult[][] = [];
|
||
const rankedListMeta: RankedListMeta[] = [];
|
||
const docidMap = new Map<string, string>(); // filepath -> docid
|
||
const hasVectors = !!store.db.prepare(
|
||
`SELECT name FROM sqlite_master WHERE type='table' AND name='vectors_vec'`
|
||
).get();
|
||
|
||
// Step 1: BM25 probe — strong signal skips expensive LLM expansion
|
||
// When intent is provided, disable strong-signal bypass — the obvious BM25
|
||
// match may not be what the caller wants (e.g. "performance" with intent
|
||
// "web page load times" should NOT shortcut to a sports-performance doc).
|
||
// Pass collection directly into FTS query (filter at SQL level, not post-hoc)
|
||
const initialFts = store.searchFTS(query, 20, collection);
|
||
const topScore = initialFts[0]?.score ?? 0;
|
||
const secondScore = initialFts[1]?.score ?? 0;
|
||
const hasStrongSignal = !intent && initialFts.length > 0
|
||
&& topScore >= STRONG_SIGNAL_MIN_SCORE
|
||
&& (topScore - secondScore) >= STRONG_SIGNAL_MIN_GAP;
|
||
|
||
if (hasStrongSignal) hooks?.onStrongSignal?.(topScore);
|
||
|
||
// Step 2: Expand query (or skip if strong signal)
|
||
hooks?.onExpandStart?.();
|
||
const expandStart = Date.now();
|
||
const expanded = hasStrongSignal
|
||
? []
|
||
: await store.expandQuery(query, undefined, intent);
|
||
|
||
hooks?.onExpand?.(query, expanded, Date.now() - expandStart);
|
||
|
||
// Seed with initial FTS results (avoid re-running original query FTS)
|
||
if (initialFts.length > 0) {
|
||
for (const r of initialFts) docidMap.set(r.filepath, r.docid);
|
||
rankedLists.push(initialFts.map(r => ({
|
||
file: r.filepath, displayPath: r.displayPath,
|
||
title: r.title, body: r.body || "", score: r.score,
|
||
})));
|
||
rankedListMeta.push({ source: "fts", queryType: "original", query });
|
||
}
|
||
|
||
// Step 3: Route searches by query type
|
||
//
|
||
// Strategy: run all FTS queries immediately (they're sync/instant), then
|
||
// batch-embed all vector queries in one embedBatch() call, then run
|
||
// sqlite-vec lookups with pre-computed embeddings.
|
||
|
||
// 3a: Run FTS for all lex expansions right away (no LLM needed)
|
||
for (const q of expanded) {
|
||
if (q.type === 'lex') {
|
||
const ftsResults = store.searchFTS(q.query, 20, collection);
|
||
if (ftsResults.length > 0) {
|
||
for (const r of ftsResults) docidMap.set(r.filepath, r.docid);
|
||
rankedLists.push(ftsResults.map(r => ({
|
||
file: r.filepath, displayPath: r.displayPath,
|
||
title: r.title, body: r.body || "", score: r.score,
|
||
})));
|
||
rankedListMeta.push({ source: "fts", queryType: "lex", query: q.query });
|
||
}
|
||
}
|
||
}
|
||
|
||
// 3b: Collect all texts that need vector search (original query + vec/hyde expansions)
|
||
if (hasVectors) {
|
||
const vecQueries: { text: string; queryType: "original" | "vec" | "hyde" }[] = [
|
||
{ text: query, queryType: "original" },
|
||
];
|
||
for (const q of expanded) {
|
||
if (q.type === 'vec' || q.type === 'hyde') {
|
||
vecQueries.push({ text: q.query, queryType: q.type });
|
||
}
|
||
}
|
||
|
||
// Batch embed all vector queries in a single call
|
||
const llm = getLlm(store);
|
||
const textsToEmbed = vecQueries.map(q => formatQueryForEmbedding(q.text));
|
||
hooks?.onEmbedStart?.(textsToEmbed.length);
|
||
const embedStart = Date.now();
|
||
const embeddings = await llm.embedBatch(textsToEmbed);
|
||
hooks?.onEmbedDone?.(Date.now() - embedStart);
|
||
|
||
// Run sqlite-vec lookups with pre-computed embeddings
|
||
for (let i = 0; i < vecQueries.length; i++) {
|
||
const embedding = embeddings[i]?.embedding;
|
||
if (!embedding) continue;
|
||
|
||
const vecResults = await store.searchVec(
|
||
vecQueries[i]!.text, DEFAULT_EMBED_MODEL, 20, collection,
|
||
undefined, embedding
|
||
);
|
||
if (vecResults.length > 0) {
|
||
for (const r of vecResults) docidMap.set(r.filepath, r.docid);
|
||
rankedLists.push(vecResults.map(r => ({
|
||
file: r.filepath, displayPath: r.displayPath,
|
||
title: r.title, body: r.body || "", score: r.score,
|
||
})));
|
||
rankedListMeta.push({
|
||
source: "vec",
|
||
queryType: vecQueries[i]!.queryType,
|
||
query: vecQueries[i]!.text,
|
||
});
|
||
}
|
||
}
|
||
}
|
||
|
||
// Step 4: RRF fusion — first 2 lists (original FTS + first vec) get 2x weight
|
||
const weights = rankedLists.map((_, i) => i < 2 ? 2.0 : 1.0);
|
||
const fused = reciprocalRankFusion(rankedLists, weights);
|
||
const rrfTraceByFile = explain ? buildRrfTrace(rankedLists, weights, rankedListMeta) : null;
|
||
const candidates = fused.slice(0, candidateLimit);
|
||
|
||
if (candidates.length === 0) return [];
|
||
|
||
// Step 5: Chunk documents, pick best chunk per doc for reranking.
|
||
// Reranking full bodies is O(tokens) — the critical perf lesson that motivated this refactor.
|
||
const queryTerms = query.toLowerCase().split(/\s+/).filter(t => t.length > 2);
|
||
const intentTerms = intent ? extractIntentTerms(intent) : [];
|
||
const docChunkMap = new Map<string, { chunks: { text: string; pos: number }[]; bestIdx: number }>();
|
||
|
||
for (const cand of candidates) {
|
||
const chunks = chunkDocument(cand.body);
|
||
if (chunks.length === 0) continue;
|
||
|
||
// Pick chunk with most keyword overlap (fallback: first chunk)
|
||
// Intent terms contribute at INTENT_WEIGHT_CHUNK (0.5) relative to query terms (1.0)
|
||
let bestIdx = 0;
|
||
let bestScore = -1;
|
||
for (let i = 0; i < chunks.length; i++) {
|
||
const chunkLower = chunks[i]!.text.toLowerCase();
|
||
let score = queryTerms.reduce((acc, term) => acc + (chunkLower.includes(term) ? 1 : 0), 0);
|
||
for (const term of intentTerms) {
|
||
if (chunkLower.includes(term)) score += INTENT_WEIGHT_CHUNK;
|
||
}
|
||
if (score > bestScore) { bestScore = score; bestIdx = i; }
|
||
}
|
||
|
||
docChunkMap.set(cand.file, { chunks, bestIdx });
|
||
}
|
||
|
||
if (skipRerank) {
|
||
// Skip LLM reranking — return candidates scored by RRF only
|
||
const seenFiles = new Set<string>();
|
||
return candidates
|
||
.map((cand, i) => {
|
||
const chunkInfo = docChunkMap.get(cand.file);
|
||
const bestIdx = chunkInfo?.bestIdx ?? 0;
|
||
const bestChunk = chunkInfo?.chunks[bestIdx]?.text || cand.body || "";
|
||
const bestChunkPos = chunkInfo?.chunks[bestIdx]?.pos || 0;
|
||
const rrfRank = i + 1;
|
||
const rrfScore = 1 / rrfRank;
|
||
const trace = rrfTraceByFile?.get(cand.file);
|
||
const explainData: HybridQueryExplain | undefined = explain ? {
|
||
ftsScores: trace?.contributions.filter(c => c.source === "fts").map(c => c.backendScore) ?? [],
|
||
vectorScores: trace?.contributions.filter(c => c.source === "vec").map(c => c.backendScore) ?? [],
|
||
rrf: {
|
||
rank: rrfRank,
|
||
positionScore: rrfScore,
|
||
weight: 1.0,
|
||
baseScore: trace?.baseScore ?? 0,
|
||
topRankBonus: trace?.topRankBonus ?? 0,
|
||
totalScore: trace?.totalScore ?? 0,
|
||
contributions: trace?.contributions ?? [],
|
||
},
|
||
rerankScore: 0,
|
||
blendedScore: rrfScore,
|
||
} : undefined;
|
||
|
||
return {
|
||
file: cand.file,
|
||
displayPath: cand.displayPath,
|
||
title: cand.title,
|
||
body: cand.body,
|
||
bestChunk,
|
||
bestChunkPos,
|
||
score: rrfScore,
|
||
context: store.getContextForFile(cand.file),
|
||
docid: docidMap.get(cand.file) || "",
|
||
...(explainData ? { explain: explainData } : {}),
|
||
};
|
||
})
|
||
.filter(r => {
|
||
if (seenFiles.has(r.file)) return false;
|
||
seenFiles.add(r.file);
|
||
return true;
|
||
})
|
||
.filter(r => r.score >= minScore)
|
||
.slice(0, limit);
|
||
}
|
||
|
||
// Step 6: Rerank chunks (NOT full bodies)
|
||
const chunksToRerank: { file: string; text: string }[] = [];
|
||
for (const cand of candidates) {
|
||
const chunkInfo = docChunkMap.get(cand.file);
|
||
if (chunkInfo) {
|
||
chunksToRerank.push({ file: cand.file, text: chunkInfo.chunks[chunkInfo.bestIdx]!.text });
|
||
}
|
||
}
|
||
|
||
hooks?.onRerankStart?.(chunksToRerank.length);
|
||
const rerankStart = Date.now();
|
||
const reranked = await store.rerank(query, chunksToRerank, undefined, intent);
|
||
hooks?.onRerankDone?.(Date.now() - rerankStart);
|
||
|
||
// Step 7: Blend RRF position score with reranker score
|
||
// Position-aware weights: top retrieval results get more protection from reranker disagreement
|
||
const candidateMap = new Map(candidates.map(c => [c.file, {
|
||
displayPath: c.displayPath, title: c.title, body: c.body,
|
||
}]));
|
||
const rrfRankMap = new Map(candidates.map((c, i) => [c.file, i + 1]));
|
||
|
||
const blended = reranked.map(r => {
|
||
const rrfRank = rrfRankMap.get(r.file) || candidateLimit;
|
||
let rrfWeight: number;
|
||
if (rrfRank <= 3) rrfWeight = 0.75;
|
||
else if (rrfRank <= 10) rrfWeight = 0.60;
|
||
else rrfWeight = 0.40;
|
||
const rrfScore = 1 / rrfRank;
|
||
const blendedScore = rrfWeight * rrfScore + (1 - rrfWeight) * r.score;
|
||
|
||
const candidate = candidateMap.get(r.file);
|
||
const chunkInfo = docChunkMap.get(r.file);
|
||
const bestIdx = chunkInfo?.bestIdx ?? 0;
|
||
const bestChunk = chunkInfo?.chunks[bestIdx]?.text || candidate?.body || "";
|
||
const bestChunkPos = chunkInfo?.chunks[bestIdx]?.pos || 0;
|
||
const trace = rrfTraceByFile?.get(r.file);
|
||
const explainData: HybridQueryExplain | undefined = explain ? {
|
||
ftsScores: trace?.contributions.filter(c => c.source === "fts").map(c => c.backendScore) ?? [],
|
||
vectorScores: trace?.contributions.filter(c => c.source === "vec").map(c => c.backendScore) ?? [],
|
||
rrf: {
|
||
rank: rrfRank,
|
||
positionScore: rrfScore,
|
||
weight: rrfWeight,
|
||
baseScore: trace?.baseScore ?? 0,
|
||
topRankBonus: trace?.topRankBonus ?? 0,
|
||
totalScore: trace?.totalScore ?? 0,
|
||
contributions: trace?.contributions ?? [],
|
||
},
|
||
rerankScore: r.score,
|
||
blendedScore,
|
||
} : undefined;
|
||
|
||
return {
|
||
file: r.file,
|
||
displayPath: candidate?.displayPath || "",
|
||
title: candidate?.title || "",
|
||
body: candidate?.body || "",
|
||
bestChunk,
|
||
bestChunkPos,
|
||
score: blendedScore,
|
||
context: store.getContextForFile(r.file),
|
||
docid: docidMap.get(r.file) || "",
|
||
...(explainData ? { explain: explainData } : {}),
|
||
};
|
||
}).sort((a, b) => b.score - a.score);
|
||
|
||
// Step 8: Dedup by file (safety net — prevents duplicate output)
|
||
const seenFiles = new Set<string>();
|
||
return blended
|
||
.filter(r => {
|
||
if (seenFiles.has(r.file)) return false;
|
||
seenFiles.add(r.file);
|
||
return true;
|
||
})
|
||
.filter(r => r.score >= minScore)
|
||
.slice(0, limit);
|
||
}
|
||
|
||
export interface VectorSearchOptions {
|
||
collection?: string;
|
||
limit?: number; // default 10
|
||
minScore?: number; // default 0.3
|
||
intent?: string; // domain intent hint for disambiguation
|
||
hooks?: Pick<SearchHooks, 'onExpand'>;
|
||
}
|
||
|
||
export interface VectorSearchResult {
|
||
file: string;
|
||
displayPath: string;
|
||
title: string;
|
||
body: string;
|
||
score: number;
|
||
context: string | null;
|
||
docid: string;
|
||
}
|
||
|
||
/**
|
||
* Vector-only semantic search with query expansion.
|
||
*
|
||
* Pipeline:
|
||
* 1. expandQuery() → typed variants, filter to vec/hyde only (lex irrelevant here)
|
||
* 2. searchVec() for original + vec/hyde variants (sequential — node-llama-cpp embed limitation)
|
||
* 3. Dedup by filepath (keep max score)
|
||
* 4. Sort by score descending, filter by minScore, slice to limit
|
||
*/
|
||
export async function vectorSearchQuery(
|
||
store: Store,
|
||
query: string,
|
||
options?: VectorSearchOptions
|
||
): Promise<VectorSearchResult[]> {
|
||
const limit = options?.limit ?? 10;
|
||
const minScore = options?.minScore ?? 0.3;
|
||
const collection = options?.collection;
|
||
const intent = options?.intent;
|
||
|
||
const hasVectors = !!store.db.prepare(
|
||
`SELECT name FROM sqlite_master WHERE type='table' AND name='vectors_vec'`
|
||
).get();
|
||
if (!hasVectors) return [];
|
||
|
||
// Expand query — filter to vec/hyde only (lex queries target FTS, not vector)
|
||
const expandStart = Date.now();
|
||
const allExpanded = await store.expandQuery(query, undefined, intent);
|
||
const vecExpanded = allExpanded.filter(q => q.type !== 'lex');
|
||
options?.hooks?.onExpand?.(query, vecExpanded, Date.now() - expandStart);
|
||
|
||
// Run original + vec/hyde expanded through vector, sequentially — concurrent embed() hangs
|
||
const queryTexts = [query, ...vecExpanded.map(q => q.query)];
|
||
const allResults = new Map<string, VectorSearchResult>();
|
||
for (const q of queryTexts) {
|
||
const vecResults = await store.searchVec(q, DEFAULT_EMBED_MODEL, limit, collection);
|
||
for (const r of vecResults) {
|
||
const existing = allResults.get(r.filepath);
|
||
if (!existing || r.score > existing.score) {
|
||
allResults.set(r.filepath, {
|
||
file: r.filepath,
|
||
displayPath: r.displayPath,
|
||
title: r.title,
|
||
body: r.body || "",
|
||
score: r.score,
|
||
context: store.getContextForFile(r.filepath),
|
||
docid: r.docid,
|
||
});
|
||
}
|
||
}
|
||
}
|
||
|
||
return Array.from(allResults.values())
|
||
.sort((a, b) => b.score - a.score)
|
||
.filter(r => r.score >= minScore)
|
||
.slice(0, limit);
|
||
}
|
||
|
||
// =============================================================================
|
||
// Structured search — pre-expanded queries from LLM
|
||
// =============================================================================
|
||
|
||
/**
|
||
* A single sub-search in a structured search request.
|
||
* Matches the format used in QMD training data.
|
||
*/
|
||
export interface StructuredSearchOptions {
|
||
collections?: string[]; // Filter to specific collections (OR match)
|
||
limit?: number; // default 10
|
||
minScore?: number; // default 0
|
||
candidateLimit?: number; // default RERANK_CANDIDATE_LIMIT
|
||
explain?: boolean; // include backend/RRF/rerank score traces
|
||
/** Domain intent hint for disambiguation — steers reranking and chunk selection */
|
||
intent?: string;
|
||
/** Skip LLM reranking, use only RRF scores */
|
||
skipRerank?: boolean;
|
||
hooks?: SearchHooks;
|
||
}
|
||
|
||
/**
|
||
* Structured search: execute pre-expanded queries without LLM query expansion.
|
||
*
|
||
* Designed for LLM callers (MCP/HTTP) that generate their own query expansions.
|
||
* Skips the internal expandQuery() step — goes directly to:
|
||
*
|
||
* Pipeline:
|
||
* 1. Route searches: lex→FTS, vec/hyde→vector (batch embed)
|
||
* 2. RRF fusion across all result lists
|
||
* 3. Chunk documents + keyword-best-chunk selection
|
||
* 4. Rerank on chunks
|
||
* 5. Position-aware score blending
|
||
* 6. Dedup, filter, slice
|
||
*
|
||
* This is the recommended endpoint for capable LLMs — they can generate
|
||
* better query variations than our small local model, especially for
|
||
* domain-specific or nuanced queries.
|
||
*/
|
||
export async function structuredSearch(
|
||
store: Store,
|
||
searches: ExpandedQuery[],
|
||
options?: StructuredSearchOptions
|
||
): Promise<HybridQueryResult[]> {
|
||
const limit = options?.limit ?? 10;
|
||
const minScore = options?.minScore ?? 0;
|
||
const candidateLimit = options?.candidateLimit ?? RERANK_CANDIDATE_LIMIT;
|
||
const explain = options?.explain ?? false;
|
||
const intent = options?.intent;
|
||
const skipRerank = options?.skipRerank ?? false;
|
||
const hooks = options?.hooks;
|
||
|
||
const collections = options?.collections;
|
||
|
||
if (searches.length === 0) return [];
|
||
|
||
// Validate queries before executing
|
||
for (const search of searches) {
|
||
const location = search.line ? `Line ${search.line}` : 'Structured search';
|
||
if (/[\r\n]/.test(search.query)) {
|
||
throw new Error(`${location} (${search.type}): queries must be single-line. Remove newline characters.`);
|
||
}
|
||
if (search.type === 'lex') {
|
||
const error = validateLexQuery(search.query);
|
||
if (error) {
|
||
throw new Error(`${location} (lex): ${error}`);
|
||
}
|
||
} else if (search.type === 'vec' || search.type === 'hyde') {
|
||
const error = validateSemanticQuery(search.query);
|
||
if (error) {
|
||
throw new Error(`${location} (${search.type}): ${error}`);
|
||
}
|
||
}
|
||
}
|
||
|
||
const rankedLists: RankedResult[][] = [];
|
||
const rankedListMeta: RankedListMeta[] = [];
|
||
const docidMap = new Map<string, string>(); // filepath -> docid
|
||
const hasVectors = !!store.db.prepare(
|
||
`SELECT name FROM sqlite_master WHERE type='table' AND name='vectors_vec'`
|
||
).get();
|
||
|
||
// Helper to run search across collections (or all if undefined)
|
||
const collectionList = collections ?? [undefined]; // undefined = all collections
|
||
|
||
// Step 1: Run FTS for all lex searches (sync, instant)
|
||
for (const search of searches) {
|
||
if (search.type === 'lex') {
|
||
for (const coll of collectionList) {
|
||
const ftsResults = store.searchFTS(search.query, 20, coll);
|
||
if (ftsResults.length > 0) {
|
||
for (const r of ftsResults) docidMap.set(r.filepath, r.docid);
|
||
rankedLists.push(ftsResults.map(r => ({
|
||
file: r.filepath, displayPath: r.displayPath,
|
||
title: r.title, body: r.body || "", score: r.score,
|
||
})));
|
||
rankedListMeta.push({
|
||
source: "fts",
|
||
queryType: "lex",
|
||
query: search.query,
|
||
});
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
// Step 2: Batch embed and run vector searches for vec/hyde
|
||
if (hasVectors) {
|
||
const vecSearches = searches.filter(
|
||
(s): s is ExpandedQuery & { type: 'vec' | 'hyde' } =>
|
||
s.type === 'vec' || s.type === 'hyde'
|
||
);
|
||
if (vecSearches.length > 0) {
|
||
const llm = getLlm(store);
|
||
const textsToEmbed = vecSearches.map(s => formatQueryForEmbedding(s.query));
|
||
hooks?.onEmbedStart?.(textsToEmbed.length);
|
||
const embedStart = Date.now();
|
||
const embeddings = await llm.embedBatch(textsToEmbed);
|
||
hooks?.onEmbedDone?.(Date.now() - embedStart);
|
||
|
||
for (let i = 0; i < vecSearches.length; i++) {
|
||
const embedding = embeddings[i]?.embedding;
|
||
if (!embedding) continue;
|
||
|
||
for (const coll of collectionList) {
|
||
const vecResults = await store.searchVec(
|
||
vecSearches[i]!.query, DEFAULT_EMBED_MODEL, 20, coll,
|
||
undefined, embedding
|
||
);
|
||
if (vecResults.length > 0) {
|
||
for (const r of vecResults) docidMap.set(r.filepath, r.docid);
|
||
rankedLists.push(vecResults.map(r => ({
|
||
file: r.filepath, displayPath: r.displayPath,
|
||
title: r.title, body: r.body || "", score: r.score,
|
||
})));
|
||
rankedListMeta.push({
|
||
source: "vec",
|
||
queryType: vecSearches[i]!.type,
|
||
query: vecSearches[i]!.query,
|
||
});
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
if (rankedLists.length === 0) return [];
|
||
|
||
// Step 3: RRF fusion — first list gets 2x weight (assume caller ordered by importance)
|
||
const weights = rankedLists.map((_, i) => i === 0 ? 2.0 : 1.0);
|
||
const fused = reciprocalRankFusion(rankedLists, weights);
|
||
const rrfTraceByFile = explain ? buildRrfTrace(rankedLists, weights, rankedListMeta) : null;
|
||
const candidates = fused.slice(0, candidateLimit);
|
||
|
||
if (candidates.length === 0) return [];
|
||
|
||
hooks?.onExpand?.("", [], 0); // Signal no expansion (pre-expanded)
|
||
|
||
// Step 4: Chunk documents, pick best chunk per doc for reranking
|
||
// Use first lex query as the "query" for keyword matching, or first vec if no lex
|
||
const primaryQuery = searches.find(s => s.type === 'lex')?.query
|
||
|| searches.find(s => s.type === 'vec')?.query
|
||
|| searches[0]?.query || "";
|
||
const queryTerms = primaryQuery.toLowerCase().split(/\s+/).filter(t => t.length > 2);
|
||
const intentTerms = intent ? extractIntentTerms(intent) : [];
|
||
const docChunkMap = new Map<string, { chunks: { text: string; pos: number }[]; bestIdx: number }>();
|
||
|
||
for (const cand of candidates) {
|
||
const chunks = chunkDocument(cand.body);
|
||
if (chunks.length === 0) continue;
|
||
|
||
// Pick chunk with most keyword overlap
|
||
// Intent terms contribute at INTENT_WEIGHT_CHUNK (0.5) relative to query terms (1.0)
|
||
let bestIdx = 0;
|
||
let bestScore = -1;
|
||
for (let i = 0; i < chunks.length; i++) {
|
||
const chunkLower = chunks[i]!.text.toLowerCase();
|
||
let score = queryTerms.reduce((acc, term) => acc + (chunkLower.includes(term) ? 1 : 0), 0);
|
||
for (const term of intentTerms) {
|
||
if (chunkLower.includes(term)) score += INTENT_WEIGHT_CHUNK;
|
||
}
|
||
if (score > bestScore) { bestScore = score; bestIdx = i; }
|
||
}
|
||
|
||
docChunkMap.set(cand.file, { chunks, bestIdx });
|
||
}
|
||
|
||
if (skipRerank) {
|
||
// Skip LLM reranking — return candidates scored by RRF only
|
||
const seenFiles = new Set<string>();
|
||
return candidates
|
||
.map((cand, i) => {
|
||
const chunkInfo = docChunkMap.get(cand.file);
|
||
const bestIdx = chunkInfo?.bestIdx ?? 0;
|
||
const bestChunk = chunkInfo?.chunks[bestIdx]?.text || cand.body || "";
|
||
const bestChunkPos = chunkInfo?.chunks[bestIdx]?.pos || 0;
|
||
const rrfRank = i + 1;
|
||
const rrfScore = 1 / rrfRank;
|
||
const trace = rrfTraceByFile?.get(cand.file);
|
||
const explainData: HybridQueryExplain | undefined = explain ? {
|
||
ftsScores: trace?.contributions.filter(c => c.source === "fts").map(c => c.backendScore) ?? [],
|
||
vectorScores: trace?.contributions.filter(c => c.source === "vec").map(c => c.backendScore) ?? [],
|
||
rrf: {
|
||
rank: rrfRank,
|
||
positionScore: rrfScore,
|
||
weight: 1.0,
|
||
baseScore: trace?.baseScore ?? 0,
|
||
topRankBonus: trace?.topRankBonus ?? 0,
|
||
totalScore: trace?.totalScore ?? 0,
|
||
contributions: trace?.contributions ?? [],
|
||
},
|
||
rerankScore: 0,
|
||
blendedScore: rrfScore,
|
||
} : undefined;
|
||
|
||
return {
|
||
file: cand.file,
|
||
displayPath: cand.displayPath,
|
||
title: cand.title,
|
||
body: cand.body,
|
||
bestChunk,
|
||
bestChunkPos,
|
||
score: rrfScore,
|
||
context: store.getContextForFile(cand.file),
|
||
docid: docidMap.get(cand.file) || "",
|
||
...(explainData ? { explain: explainData } : {}),
|
||
};
|
||
})
|
||
.filter(r => {
|
||
if (seenFiles.has(r.file)) return false;
|
||
seenFiles.add(r.file);
|
||
return true;
|
||
})
|
||
.filter(r => r.score >= minScore)
|
||
.slice(0, limit);
|
||
}
|
||
|
||
// Step 5: Rerank chunks
|
||
const chunksToRerank: { file: string; text: string }[] = [];
|
||
for (const cand of candidates) {
|
||
const chunkInfo = docChunkMap.get(cand.file);
|
||
if (chunkInfo) {
|
||
chunksToRerank.push({ file: cand.file, text: chunkInfo.chunks[chunkInfo.bestIdx]!.text });
|
||
}
|
||
}
|
||
|
||
hooks?.onRerankStart?.(chunksToRerank.length);
|
||
const rerankStart2 = Date.now();
|
||
const reranked = await store.rerank(primaryQuery, chunksToRerank, undefined, intent);
|
||
hooks?.onRerankDone?.(Date.now() - rerankStart2);
|
||
|
||
// Step 6: Blend RRF position score with reranker score
|
||
const candidateMap = new Map(candidates.map(c => [c.file, {
|
||
displayPath: c.displayPath, title: c.title, body: c.body,
|
||
}]));
|
||
const rrfRankMap = new Map(candidates.map((c, i) => [c.file, i + 1]));
|
||
|
||
const blended = reranked.map(r => {
|
||
const rrfRank = rrfRankMap.get(r.file) || candidateLimit;
|
||
let rrfWeight: number;
|
||
if (rrfRank <= 3) rrfWeight = 0.75;
|
||
else if (rrfRank <= 10) rrfWeight = 0.60;
|
||
else rrfWeight = 0.40;
|
||
const rrfScore = 1 / rrfRank;
|
||
const blendedScore = rrfWeight * rrfScore + (1 - rrfWeight) * r.score;
|
||
|
||
const candidate = candidateMap.get(r.file);
|
||
const chunkInfo = docChunkMap.get(r.file);
|
||
const bestIdx = chunkInfo?.bestIdx ?? 0;
|
||
const bestChunk = chunkInfo?.chunks[bestIdx]?.text || candidate?.body || "";
|
||
const bestChunkPos = chunkInfo?.chunks[bestIdx]?.pos || 0;
|
||
const trace = rrfTraceByFile?.get(r.file);
|
||
const explainData: HybridQueryExplain | undefined = explain ? {
|
||
ftsScores: trace?.contributions.filter(c => c.source === "fts").map(c => c.backendScore) ?? [],
|
||
vectorScores: trace?.contributions.filter(c => c.source === "vec").map(c => c.backendScore) ?? [],
|
||
rrf: {
|
||
rank: rrfRank,
|
||
positionScore: rrfScore,
|
||
weight: rrfWeight,
|
||
baseScore: trace?.baseScore ?? 0,
|
||
topRankBonus: trace?.topRankBonus ?? 0,
|
||
totalScore: trace?.totalScore ?? 0,
|
||
contributions: trace?.contributions ?? [],
|
||
},
|
||
rerankScore: r.score,
|
||
blendedScore,
|
||
} : undefined;
|
||
|
||
return {
|
||
file: r.file,
|
||
displayPath: candidate?.displayPath || "",
|
||
title: candidate?.title || "",
|
||
body: candidate?.body || "",
|
||
bestChunk,
|
||
bestChunkPos,
|
||
score: blendedScore,
|
||
context: store.getContextForFile(r.file),
|
||
docid: docidMap.get(r.file) || "",
|
||
...(explainData ? { explain: explainData } : {}),
|
||
};
|
||
}).sort((a, b) => b.score - a.score);
|
||
|
||
// Step 7: Dedup by file
|
||
const seenFiles = new Set<string>();
|
||
return blended
|
||
.filter(r => {
|
||
if (seenFiles.has(r.file)) return false;
|
||
seenFiles.add(r.file);
|
||
return true;
|
||
})
|
||
.filter(r => r.score >= minScore)
|
||
.slice(0, limit);
|
||
}
|