from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker
from sqlalchemy.pool import StaticPool

from utils.config import settings

# Create SQLite engine with proper configuration
engine = create_engine(
    settings.DATABASE_URL,
    connect_args={
        "check_same_thread": False,  # Allow multiple threads for SQLite
        "timeout": 20,  # Set timeout for database operations
    },
    poolclass=StaticPool,
    echo=settings.LOG_LEVEL == "DEBUG",  # Log SQL queries in debug mode
)

# Create session factory
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

# Create base class for models
Base = declarative_base()


def get_db():
    """Dependency to get database session"""
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()


async def init_db():
    """Initialize database tables"""
    # Import all models to ensure they're registered
    from adapters.sqlite import models  # noqa: F401

    # Create all tables
    Base.metadata.create_all(bind=engine)