feat(UI): added docker image and config

web_interface/app/database.py

@@ -0,0 +1,70 @@
+"""
+Database configuration for scheduled downloads.
+Uses SQLite with SQLAlchemy ORM for persistent storage.
+"""
+
+from sqlalchemy import create_engine, event
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+from pathlib import Path
+import logging
+
+logger = logging.getLogger(__name__)
+
+# Database file location - uses /app/data in Docker container
+# This directory should be mounted as a volume for persistence
+DATA_DIR = Path(__file__).parent.parent / "data"
+DB_PATH = DATA_DIR / "scheduled_tasks.db"
+
+# Ensure data directory exists (will be mounted volume in Docker)
+DATA_DIR.mkdir(parents=True, exist_ok=True)
+
+# Create engine with proper settings for SQLite in Docker
+engine = create_engine(
+    f"sqlite:///{DB_PATH}",
+    echo=False,
+    connect_args={
+        "check_same_thread": False,  # Allow multi-threaded access
+        "timeout": 30  # Longer timeout for container I/O
+    },
+    pool_pre_ping=True,  # Verify connections before using
+)
+
+# Enable foreign keys for SQLite
+@event.listens_for(engine, "connect")
+def set_sqlite_pragma(dbapi_conn, connection_record):
+    cursor = dbapi_conn.cursor()
+    cursor.execute("PRAGMA foreign_keys=ON")
+    cursor.close()
+
+# Create session factory
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+# Base class for models
+Base = declarative_base()
+
+
+def init_database():
+    """Initialize database - called on container startup"""
+    try:
+        Base.metadata.create_all(bind=engine)
+        logger.info(f"Database initialized at {DB_PATH}")
+    except Exception as e:
+        logger.error(f"Failed to initialize database: {e}")
+        raise
+
+
+def get_db():
+    """
+    Dependency for FastAPI to get database session.
+    
+    Usage:
+        @app.get("/endpoint")
+        def endpoint(db: Session = Depends(get_db)):
+            ...
+    """
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()