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"""Database connection and session management for Project Memory."""
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker, declarative_base
from pathlib import Path
# Database file location
DB_PATH = Path(__file__).parent.parent / "project_memory.db"
DATABASE_URL = f"sqlite:///{DB_PATH}"
# Create engine with SQLite-specific settings
engine = create_engine(
DATABASE_URL,
connect_args={"check_same_thread": False}, # Needed for SQLite
echo=False, # Set to True for SQL debugging
)
# Session factory
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
# Base class for models
Base = declarative_base()
def get_db():
"""Dependency that provides a database session."""
db = SessionLocal()
try:
yield db
finally:
db.close()
def init_db():
"""Initialize database tables."""
from app import models # noqa: F401 - Import models to register them
Base.metadata.create_all(bind=engine)
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