from fastapi import Depends, FastAPI
from fastapi.middleware.cors import CORSMiddleware
from sqlalchemy.orm import Session

from app.api.endpoints import router as api_router
from app.core.config import settings
from app.db.session import get_db

# Initialize FastAPI app
app = FastAPI(
    title=settings.PROJECT_NAME,
    openapi_url=f"{settings.API_V1_STR}/openapi.json"
)

# Set up CORS middleware
if settings.BACKEND_CORS_ORIGINS:
    app.add_middleware(
        CORSMiddleware,
        allow_origins=[str(origin) for origin in settings.BACKEND_CORS_ORIGINS],
        allow_credentials=True,
        allow_methods=["*"],
        allow_headers=["*"],
    )

# Add JWT authentication middleware
# Note: This middleware is commented out because we're already using FastAPI's
# dependency injection for authentication. Uncomment if you want to use middleware approach.
# app.middleware("http")(jwt_middleware())

# Include API router
app.include_router(api_router, prefix=settings.API_V1_STR)


# Health check endpoint
@app.get("/health", tags=["health"])
def health_check(db: Session = Depends(get_db)):
    """Health check endpoint to verify the service is running and database connection is working
    """
    # Try to execute a simple query to verify database connection
    try:
        db.execute("SELECT 1")
        db_status = "healthy"
    except Exception as e:
        db_status = f"unhealthy: {str(e)}"

    return {
        "status": "ok",
        "database": db_status
    }


if __name__ == "__main__":
    import uvicorn
    uvicorn.run(app, host="0.0.0.0", port=8000)