feat: add opencode support

server/modules/providers/list/opencode/opencode-session-synchronizer.provider.ts

@@ -0,0 +1,157 @@
+import fsSync from 'node:fs';
+import path from 'node:path';
+
+import Database from 'better-sqlite3';
+
+import { sessionsDb } from '@/modules/database/index.js';
+import type { IProviderSessionSynchronizer } from '@/shared/interfaces.js';
+import {
+  getOpenCodeDatabasePath,
+  normalizeProviderTimestamp,
+  normalizeSessionName,
+  readJsonRecord,
+  readOptionalString,
+} from '@/shared/utils.js';
+
+type OpenCodeSessionRow = {
+  id: string;
+  directory: string | null;
+  title: string | null;
+  time_created: number | null;
+  time_updated: number | null;
+  worktree: string | null;
+};
+
+type SynchronizeRowsResult = {
+  processed: number;
+  firstSessionId: string | null;
+};
+
+/**
+ * Session indexer for OpenCode's SQLite-backed session store.
+ */
+export class OpenCodeSessionSynchronizer implements IProviderSessionSynchronizer {
+  private readonly provider = 'opencode' as const;
+
+  /**
+   * Scans OpenCode's shared opencode.db and upserts active sessions into DB.
+   */
+  async synchronize(since?: Date): Promise<number> {
+    const result = this.synchronizeRows(since);
+    return result.processed;
+  }
+
+  /**
+   * Handles watcher changes for opencode.db.
+   */
+  async synchronizeFile(filePath: string): Promise<string | null> {
+    if (path.basename(filePath) !== 'opencode.db') {
+      return null;
+    }
+
+    const result = this.synchronizeRows(undefined, 1);
+    return result.firstSessionId;
+  }
+
+  private synchronizeRows(since?: Date, limit?: number): SynchronizeRowsResult {
+    const dbPath = getOpenCodeDatabasePath();
+    if (!fsSync.existsSync(dbPath)) {
+      return { processed: 0, firstSessionId: null };
+    }
+
+    const db = new Database(dbPath, { readonly: true, fileMustExist: true });
+    try {
+      const sinceMillis = since?.getTime() ?? null;
+      const limitClause = limit ? 'LIMIT ?' : '';
+      const params = limit ? [sinceMillis, sinceMillis, limit] : [sinceMillis, sinceMillis];
+      const rows = db.prepare(`
+        SELECT
+          s.id AS id,
+          s.directory AS directory,
+          s.title AS title,
+          s.time_created AS time_created,
+          s.time_updated AS time_updated,
+          p.worktree AS worktree
+        FROM session s
+        LEFT JOIN project p ON p.id = s.project_id
+        WHERE s.time_archived IS NULL
+          AND (? IS NULL OR COALESCE(s.time_updated, s.time_created, 0) >= ?)
+        ORDER BY COALESCE(s.time_updated, s.time_created, 0) DESC, s.id DESC
+        ${limitClause}
+      `).all(...params) as OpenCodeSessionRow[];
+
+      let processed = 0;
+      let firstSessionId: string | null = null;
+      for (const row of rows) {
+        const indexedSessionId = this.upsertSession(db, row);
+        if (!indexedSessionId) {
+          continue;
+        }
+
+        if (!firstSessionId) {
+          firstSessionId = indexedSessionId;
+        }
+        processed += 1;
+      }
+
+      return { processed, firstSessionId };
+    } catch (error) {
+      const message = error instanceof Error ? error.message : String(error);
+      console.warn('[OpenCodeProvider] Failed to synchronize sessions:', message);
+      return { processed: 0, firstSessionId: null };
+    } finally {
+      db.close();
+    }
+  }
+
+  private upsertSession(db: Database.Database, row: OpenCodeSessionRow): string | null {
+    const sessionId = readOptionalString(row.id);
+    const projectPath = readOptionalString(row.directory) ?? readOptionalString(row.worktree);
+    if (!sessionId || !projectPath) {
+      return null;
+    }
+
+    const fallbackTitle = 'Untitled OpenCode Session';
+    const existingSession = sessionsDb.getSessionById(sessionId);
+    const existingName = existingSession?.custom_name;
+    const nextName = existingName && existingName !== fallbackTitle
+      ? existingName
+      : readOptionalString(row.title) ?? this.readFirstUserText(db, sessionId);
+
+    // OpenCode stores every session in one shared sqlite database, so jsonl_path
+    // must stay null to avoid deleting opencode.db when one app session is removed.
+    sessionsDb.createSession(
+      sessionId,
+      this.provider,
+      projectPath,
+      normalizeSessionName(nextName, fallbackTitle),
+      normalizeProviderTimestamp(row.time_created),
+      normalizeProviderTimestamp(row.time_updated ?? row.time_created),
+      null,
+    );
+
+    return sessionId;
+  }
+
+  private readFirstUserText(db: Database.Database, sessionId: string): string | undefined {
+    try {
+      const row = db.prepare(`
+        SELECT p.data AS data
+        FROM message m
+        INNER JOIN part p
+          ON p.session_id = m.session_id
+         AND p.message_id = m.id
+        WHERE m.session_id = ?
+          AND json_extract(m.data, '$.role') = 'user'
+          AND json_extract(p.data, '$.type') = 'text'
+        ORDER BY COALESCE(m.time_created, 0), COALESCE(p.time_created, 0)
+        LIMIT 1
+      `).get(sessionId) as { data: string | null } | undefined;
+
+      const data = readJsonRecord(row?.data);
+      return readOptionalString(data?.text);
+    } catch {
+      return undefined;
+    }
+  }
+}