init commit

shared/database.py

@@ -0,0 +1,57 @@
+from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine
+from sqlalchemy.orm import sessionmaker, declarative_base
+from sqlalchemy import Column, Integer, DateTime, Boolean
+from sqlalchemy.sql import func
+from shared.config import settings
+
+# Database setup
+engine = create_async_engine(
+    settings.DATABASE_URL,
+    echo=settings.DEBUG,
+    future=True,
+    pool_size=20,
+    max_overflow=30,
+    pool_pre_ping=True,
+)
+
+AsyncSessionLocal = sessionmaker(
+    engine,
+    class_=AsyncSession,
+    expire_on_commit=False,
+)
+
+Base = declarative_base()
+
+
+class BaseModel(Base):
+    """Base model with common fields"""
+    __abstract__ = True
+    
+    id = Column(Integer, primary_key=True, index=True)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
+    is_active = Column(Boolean, default=True)
+
+
+async def get_db() -> AsyncSession:
+    """Database session dependency"""
+    async with AsyncSessionLocal() as session:
+        try:
+            yield session
+        except Exception:
+            await session.rollback()
+            raise
+        finally:
+            await session.close()
+
+
+async def init_db():
+    """Initialize database"""
+    async with engine.begin() as conn:
+        # Import all models here to ensure they are registered
+        from services.user_service.models import User
+        from services.emergency_service.models import EmergencyAlert
+        from services.location_service.models import UserLocation
+        from services.calendar_service.models import CalendarEntry
+        
+        await conn.run_sync(Base.metadata.create_all)