Initial commit — PlantGuideScraper project

backend/app/database.py

@@ -0,0 +1,44 @@
+from sqlalchemy import create_engine, event
+from sqlalchemy.orm import sessionmaker, declarative_base
+from sqlalchemy.pool import StaticPool
+
+from app.config import get_settings
+
+settings = get_settings()
+
+# SQLite-specific configuration
+connect_args = {"check_same_thread": False}
+
+engine = create_engine(
+    settings.database_url,
+    connect_args=connect_args,
+    poolclass=StaticPool,
+    echo=False,
+)
+
+# Enable WAL mode for better concurrent access
+@event.listens_for(engine, "connect")
+def set_sqlite_pragma(dbapi_connection, connection_record):
+    cursor = dbapi_connection.cursor()
+    cursor.execute("PRAGMA journal_mode=WAL")
+    cursor.execute("PRAGMA synchronous=NORMAL")
+    cursor.execute("PRAGMA foreign_keys=ON")
+    cursor.close()
+
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+Base = declarative_base()
+
+
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()
+
+
+def init_db():
+    """Create all tables."""
+    from app.models import species, image, job, api_key, export, cached_stats  # noqa
+    Base.metadata.create_all(bind=engine)