from fastapi import FastAPI, Depends
from fastapi.middleware.cors import CORSMiddleware

from app.api.api_v1.api import api_router
from app.core.config import settings
from app.db.session import engine, SessionLocal
from app.db.base import Base
from app.services.init_db import init_db

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

# Initialize database with default user
db = SessionLocal()
try:
    init_db(db)
finally:
    db.close()

app = FastAPI(
    title=settings.PROJECT_NAME,
    openapi_url=f"{settings.API_PREFIX}/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=["*"],
    )

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

@app.get("/")
def root():
    return {"message": "Welcome to SolarBank IoT Dashboard API"}

@app.get("/health")
def health_check():
    """Health check endpoint for monitoring and load balancers"""
    return {"status": "healthy", "service": "solarbank-backend"}

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