feat: add FTS5 search endpoint + search param to /api/videos

backend/db.py

@@ -17,6 +17,7 @@ async def init_db():
                 thumbnail_url TEXT,
                 publish_date TEXT,
                 duration INTEGER,
+                view_count INTEGER DEFAULT 0,
                 transcript TEXT,
                 summary TEXT,
                 status TEXT DEFAULT 'pending',
@@ -39,10 +40,37 @@ async def init_db():
                 status TEXT DEFAULT 'pending',
                 created_at TEXT DEFAULT CURRENT_TIMESTAMP,
                 processed_at TEXT,
-                result TEXT,
                 FOREIGN KEY (video_id) REFERENCES videos(video_id)
             )
         """)
+        # FTS5 virtual table for full-text search on title + summary
+        await db.execute("""
+            CREATE VIRTUAL TABLE IF NOT EXISTS videos_fts USING fts5(
+                title, summary,
+                content='videos',
+                content_rowid='rowid'
+            )
+        """)
+        # Trigger to keep FTS5 index in sync
+        await db.execute("""
+            CREATE TRIGGER IF NOT EXISTS videos_fts_insert AFTER INSERT ON videos
+            BEGIN
+                INSERT INTO videos_fts(rowid, title, summary) VALUES (new.rowid, new.title, new.summary);
+            END;
+        """)
+        await db.execute("""
+            CREATE TRIGGER IF NOT EXISTS videos_fts_update AFTER UPDATE ON videos
+            BEGIN
+                INSERT INTO videos_fts(videos_fts, rowid, title, summary) VALUES ('delete', old.rowid, old.title, old.summary);
+                INSERT INTO videos_fts(rowid, title, summary) VALUES (new.rowid, new.title, new.summary);
+            END;
+        """)
+        await db.execute("""
+            CREATE TRIGGER IF NOT EXISTS videos_fts_delete AFTER DELETE ON videos
+            BEGIN
+                INSERT INTO videos_fts(videos_fts, rowid, title, summary) VALUES ('delete', old.rowid, old.title, old.summary);
+            END;
+        """)
         await db.commit()
 
 async def get_db():