mirror of
https://github.com/MODSetter/SurfSense.git
synced 2026-04-26 09:16:22 +02:00
463 lines
16 KiB
TypeScript
463 lines
16 KiB
TypeScript
/**
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* Electric SQL client setup for ElectricSQL 1.x with PGlite
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*
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* This uses the new ElectricSQL 1.x architecture:
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* - PGlite: In-browser PostgreSQL database (local storage)
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* - @electric-sql/pglite-sync: Sync plugin to sync Electric shapes into PGlite
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* - @electric-sql/client: HTTP client for subscribing to shapes
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*/
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import { PGlite } from "@electric-sql/pglite";
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import { electricSync } from "@electric-sql/pglite-sync";
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import { live } from "@electric-sql/pglite/live";
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// Types
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export interface ElectricClient {
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db: PGlite;
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syncShape: (options: SyncShapeOptions) => Promise<SyncHandle>;
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}
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export interface SyncShapeOptions {
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table: string;
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where?: string;
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columns?: string[];
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primaryKey?: string[];
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}
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export interface SyncHandle {
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unsubscribe: () => void;
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readonly isUpToDate: boolean;
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// The stream property contains the ShapeStreamInterface from pglite-sync
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stream?: unknown;
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// Promise that resolves when initial sync is complete
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initialSyncPromise?: Promise<void>;
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}
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// Singleton instance
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let electricClient: ElectricClient | null = null;
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let isInitializing = false;
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let initPromise: Promise<ElectricClient> | null = null;
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// Version for sync state - increment this to force fresh sync when Electric config changes
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// Incremented to v4 to fix sync completion issues
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const SYNC_VERSION = 4;
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// Get Electric URL from environment
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function getElectricUrl(): string {
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if (typeof window !== "undefined") {
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return process.env.NEXT_PUBLIC_ELECTRIC_URL || "http://localhost:5133";
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}
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return "http://localhost:5133";
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}
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/**
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* Initialize the Electric SQL client with PGlite and sync plugin
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*/
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export async function initElectric(): Promise<ElectricClient> {
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if (electricClient) {
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return electricClient;
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}
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if (isInitializing && initPromise) {
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return initPromise;
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}
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isInitializing = true;
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initPromise = (async () => {
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try {
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// Create PGlite instance with Electric sync plugin and live queries
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// Include version in database name to force fresh sync when Electric config changes
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const db = await PGlite.create({
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dataDir: `idb://surfsense-notifications-v${SYNC_VERSION}`,
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relaxedDurability: true,
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extensions: {
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// Enable debug mode in electricSync to see detailed sync logs
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electric: electricSync({ debug: true }),
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live, // Enable live queries for real-time updates
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},
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});
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// Create the notifications table schema in PGlite
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// This matches the backend schema
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await db.exec(`
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CREATE TABLE IF NOT EXISTS notifications (
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id INTEGER PRIMARY KEY,
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user_id TEXT NOT NULL,
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search_space_id INTEGER,
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type TEXT NOT NULL,
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title TEXT NOT NULL,
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message TEXT NOT NULL,
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read BOOLEAN NOT NULL DEFAULT FALSE,
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metadata JSONB DEFAULT '{}',
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created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
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updated_at TIMESTAMPTZ
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);
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CREATE INDEX IF NOT EXISTS idx_notifications_user_id ON notifications(user_id);
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CREATE INDEX IF NOT EXISTS idx_notifications_read ON notifications(read);
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`);
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// Create the search_source_connectors table schema in PGlite
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// This matches the backend schema
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await db.exec(`
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CREATE TABLE IF NOT EXISTS search_source_connectors (
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id INTEGER PRIMARY KEY,
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search_space_id INTEGER NOT NULL,
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user_id TEXT NOT NULL,
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connector_type TEXT NOT NULL,
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name TEXT NOT NULL,
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is_indexable BOOLEAN NOT NULL DEFAULT FALSE,
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last_indexed_at TIMESTAMPTZ,
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config JSONB DEFAULT '{}',
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periodic_indexing_enabled BOOLEAN NOT NULL DEFAULT FALSE,
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indexing_frequency_minutes INTEGER,
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next_scheduled_at TIMESTAMPTZ,
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created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
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);
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CREATE INDEX IF NOT EXISTS idx_connectors_search_space_id ON search_source_connectors(search_space_id);
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CREATE INDEX IF NOT EXISTS idx_connectors_type ON search_source_connectors(connector_type);
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CREATE INDEX IF NOT EXISTS idx_connectors_user_id ON search_source_connectors(user_id);
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`);
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// Create the documents table schema in PGlite
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// Only sync minimal fields needed for type counts: id, document_type, search_space_id
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await db.exec(`
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CREATE TABLE IF NOT EXISTS documents (
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id INTEGER PRIMARY KEY,
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search_space_id INTEGER NOT NULL,
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document_type TEXT NOT NULL,
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created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
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);
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CREATE INDEX IF NOT EXISTS idx_documents_search_space_id ON documents(search_space_id);
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CREATE INDEX IF NOT EXISTS idx_documents_type ON documents(document_type);
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CREATE INDEX IF NOT EXISTS idx_documents_search_space_type ON documents(search_space_id, document_type);
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`);
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const electricUrl = getElectricUrl();
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// Create the client wrapper
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electricClient = {
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db,
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syncShape: async (options: SyncShapeOptions): Promise<SyncHandle> => {
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const { table, where, columns, primaryKey = ["id"] } = options;
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// Build params for the shape request
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// Electric SQL expects params as URL query parameters
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const params: Record<string, string> = { table };
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// Validate and fix WHERE clause to ensure string literals are properly quoted
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let validatedWhere = where;
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if (where) {
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// Check if where uses positional parameters
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if (where.includes("$1")) {
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// Extract the value from the where clause if it's embedded
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// For now, we'll use the where clause as-is and let Electric handle it
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params.where = where;
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validatedWhere = where;
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} else {
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// Validate that string literals are properly quoted
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// Count single quotes - should be even (pairs) for properly quoted strings
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const singleQuoteCount = (where.match(/'/g) || []).length;
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if (singleQuoteCount % 2 !== 0) {
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// Odd number of quotes means unterminated string literal
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console.warn("Where clause has unmatched quotes, fixing:", where);
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// Add closing quote at the end
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validatedWhere = `${where}'`;
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params.where = validatedWhere;
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} else {
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// Use the where clause directly (already formatted)
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params.where = where;
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validatedWhere = where;
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}
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}
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}
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if (columns) params.columns = columns.join(",");
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console.log("Syncing shape with params:", params);
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console.log("Electric URL:", `${electricUrl}/v1/shape`);
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console.log("Where clause:", where, "Validated:", validatedWhere);
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try {
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// Debug: Test Electric SQL connection directly first
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// Use validatedWhere to ensure proper URL encoding
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const testUrl = `${electricUrl}/v1/shape?table=${table}&offset=-1${validatedWhere ? `&where=${encodeURIComponent(validatedWhere)}` : ""}`;
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console.log("Testing Electric SQL directly:", testUrl);
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try {
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const testResponse = await fetch(testUrl);
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const testHeaders = {
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handle: testResponse.headers.get("electric-handle"),
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offset: testResponse.headers.get("electric-offset"),
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upToDate: testResponse.headers.get("electric-up-to-date"),
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};
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console.log("Direct Electric SQL response headers:", testHeaders);
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const testData = await testResponse.json();
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console.log(
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"Direct Electric SQL data count:",
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Array.isArray(testData) ? testData.length : "not array",
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testData
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);
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} catch (testErr) {
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console.error("Direct Electric SQL test failed:", testErr);
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}
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// Use PGlite's electric sync plugin to sync the shape
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// According to Electric SQL docs, the shape config uses params for table, where, columns
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// Note: mapColumns is OPTIONAL per pglite-sync types.ts
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// Create a promise that resolves when initial sync is complete
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// Using recommended approach: check isUpToDate immediately, watch stream, shorter timeout
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// IMPORTANT: We don't unsubscribe from the stream - it must stay active for real-time updates
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let resolveInitialSync: () => void;
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let rejectInitialSync: (error: Error) => void;
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let syncResolved = false;
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const initialSyncPromise = new Promise<void>((resolve, reject) => {
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resolveInitialSync = () => {
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if (!syncResolved) {
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syncResolved = true;
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// DON'T unsubscribe from stream - it needs to stay active for real-time updates
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resolve();
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}
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};
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rejectInitialSync = (error: Error) => {
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if (!syncResolved) {
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syncResolved = true;
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// DON'T unsubscribe from stream even on error - let Electric handle it
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reject(error);
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}
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};
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// Shorter timeout (5 seconds) as fallback
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const timeoutId = setTimeout(() => {
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if (!syncResolved) {
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console.warn(
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`⚠️ Sync timeout for ${table} - checking isUpToDate one more time...`
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);
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// Check isUpToDate one more time before resolving
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// This will be checked after shape is created
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setTimeout(() => {
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if (!syncResolved) {
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console.warn(`⚠️ Sync timeout for ${table} - resolving anyway after 5s`);
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resolveInitialSync();
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}
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}, 100);
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}
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}, 5000);
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// Store timeout ID for cleanup if needed
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// Note: timeout will be cleared if sync completes early
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});
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const shapeConfig = {
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shape: {
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url: `${electricUrl}/v1/shape`,
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params: {
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table,
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...(validatedWhere ? { where: validatedWhere } : {}),
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...(columns ? { columns: columns.join(",") } : {}),
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},
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},
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table,
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primaryKey,
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shapeKey: `v${SYNC_VERSION}_${table}_${where?.replace(/[^a-zA-Z0-9]/g, "_") || "all"}`, // Versioned key to force fresh sync when needed
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onInitialSync: () => {
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console.log(`✅ Initial sync complete for ${table} - data should now be in PGlite`);
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resolveInitialSync();
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},
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onError: (error: Error) => {
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console.error(`❌ Shape sync error for ${table}:`, error);
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console.error(
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"Error details:",
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JSON.stringify(error, Object.getOwnPropertyNames(error))
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);
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rejectInitialSync(error);
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},
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};
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console.log("syncShapeToTable config:", JSON.stringify(shapeConfig, null, 2));
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// Type assertion to PGlite with electric extension
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const pgWithElectric = db as PGlite & {
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electric: {
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syncShapeToTable: (
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config: typeof shapeConfig
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) => Promise<{ unsubscribe: () => void; isUpToDate: boolean; stream: unknown }>;
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};
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};
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const shape = await pgWithElectric.electric.syncShapeToTable(shapeConfig);
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if (!shape) {
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throw new Error("syncShapeToTable returned undefined");
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}
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// Log the actual shape result structure
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console.log("Shape sync result (initial):", {
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hasUnsubscribe: typeof shape?.unsubscribe === "function",
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isUpToDate: shape?.isUpToDate,
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hasStream: !!shape?.stream,
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streamType: typeof shape?.stream,
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});
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// Recommended Approach Step 1: Check isUpToDate immediately
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if (shape.isUpToDate) {
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console.log(`✅ Sync already up-to-date for ${table} (resuming from previous state)`);
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resolveInitialSync();
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} else {
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// Recommended Approach Step 2: Subscribe to stream and watch for "up-to-date" message
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if (shape?.stream) {
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const stream = shape.stream as any;
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console.log("Shape stream details:", {
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shapeHandle: stream?.shapeHandle,
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lastOffset: stream?.lastOffset,
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isUpToDate: stream?.isUpToDate,
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error: stream?.error,
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hasSubscribe: typeof stream?.subscribe === "function",
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hasUnsubscribe: typeof stream?.unsubscribe === "function",
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});
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// Subscribe to the stream to watch for "up-to-date" control message
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// NOTE: We keep this subscription active - don't unsubscribe!
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// The stream is what Electric SQL uses for real-time updates
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if (typeof stream?.subscribe === "function") {
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console.log("Subscribing to shape stream to watch for up-to-date message...");
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// Subscribe but don't store unsubscribe - we want it to stay active
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stream.subscribe((messages: unknown[]) => {
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// Continue receiving updates even after sync is resolved
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if (!syncResolved) {
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console.log("🔵 Shape stream received messages:", messages?.length || 0);
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}
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// Check if any message indicates sync is complete
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if (messages && messages.length > 0) {
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for (const message of messages) {
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const msg = message as any;
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// Check for "up-to-date" control message
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if (
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msg?.headers?.control === "up-to-date" ||
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msg?.headers?.electric_up_to_date === "true" ||
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(typeof msg === "object" && "up-to-date" in msg)
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) {
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if (!syncResolved) {
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console.log(`✅ Received up-to-date message for ${table}`);
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resolveInitialSync();
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}
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// Continue listening for real-time updates - don't return!
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}
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}
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if (!syncResolved && messages.length > 0) {
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console.log("First message:", JSON.stringify(messages[0], null, 2));
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}
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}
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// Also check stream's isUpToDate property after receiving messages
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if (!syncResolved && stream?.isUpToDate) {
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console.log(`✅ Stream isUpToDate is true for ${table}`);
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resolveInitialSync();
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}
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});
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// Also check stream's isUpToDate property immediately
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if (stream?.isUpToDate) {
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console.log(`✅ Stream isUpToDate is true immediately for ${table}`);
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resolveInitialSync();
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}
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}
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// Also poll isUpToDate periodically as a backup (every 200ms)
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const pollInterval = setInterval(() => {
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if (syncResolved) {
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clearInterval(pollInterval);
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return;
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}
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if (shape.isUpToDate || stream?.isUpToDate) {
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console.log(`✅ Sync completed (detected via polling) for ${table}`);
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clearInterval(pollInterval);
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resolveInitialSync();
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}
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}, 200);
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// Clean up polling when promise resolves
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initialSyncPromise.finally(() => {
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clearInterval(pollInterval);
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});
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} else {
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console.warn(`⚠️ No stream available for ${table}, relying on callback and timeout`);
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}
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}
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// Return the shape handle - isUpToDate is a getter that reflects current state
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return {
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unsubscribe: () => {
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console.log("unsubscribing");
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if (shape && typeof shape.unsubscribe === "function") {
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shape.unsubscribe();
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}
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},
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// Use getter to always return current state
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get isUpToDate() {
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return shape?.isUpToDate ?? false;
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},
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stream: shape?.stream,
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initialSyncPromise, // Expose promise so callers can wait for sync
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};
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} catch (error) {
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console.error("Failed to sync shape:", error);
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// Check if Electric SQL server is reachable
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try {
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const response = await fetch(`${electricUrl}/v1/shape?table=${table}&offset=-1`, {
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method: "GET",
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});
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console.log("Electric SQL server response:", response.status, response.statusText);
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if (!response.ok) {
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console.error("Electric SQL server error:", await response.text());
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}
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} catch (fetchError) {
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console.error("Cannot reach Electric SQL server:", fetchError);
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console.error("Make sure Electric SQL is running at:", electricUrl);
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}
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throw error;
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}
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},
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};
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console.log("Electric SQL initialized successfully with PGlite");
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return electricClient;
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} catch (error) {
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console.error("Failed to initialize Electric SQL:", error);
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throw error;
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} finally {
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isInitializing = false;
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}
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})();
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return initPromise;
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}
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/**
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* Get the Electric client (throws if not initialized)
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*/
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export function getElectric(): ElectricClient {
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if (!electricClient) {
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throw new Error("Electric not initialized. Call initElectric() first.");
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}
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return electricClient;
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}
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/**
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* Check if Electric is initialized
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*/
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export function isElectricInitialized(): boolean {
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return electricClient !== null;
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}
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/**
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* Get the PGlite database instance
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*/
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export function getDb(): PGlite | null {
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return electricClient?.db ?? null;
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}
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