from fastapi import FastAPI, Depends, HTTPException
from sqlalchemy.orm import Session
from sqlalchemy import text
from app.core.config import settings
from app.core.lifespan import lifespan
from app.core.database import get_db
from datetime import datetime
from app.api.main import api_router
from fastapi.middleware.cors import CORSMiddleware
import logging

logger = logging.getLogger(__name__)

# FastAPI app with lifespan
app = FastAPI(
    title=settings.PROJECT_NAME,
    description=settings.DESCRIPTION,
    version=settings.VERSION,
    lifespan=lifespan
)

# Add CORS middleware
app.add_middleware(
    CORSMiddleware,
    allow_origins=settings.ALLOWED_HOSTS,
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# Include API router
app.include_router(api_router, prefix="/api/v1")


# Public Routes (no authentication required)
# Core application endpoints (Public Routes, no authentication required)
@app.get("/")
def root():
    return {
        "message": f"{settings.PROJECT_NAME} v{settings.VERSION}",
        "status": "operational",
        "docs": "/docs",
        "features": [
            "JWT Authentication",
            "Marketplace-aware product import",
            "Multi-shop product management",
            "Stock management with location tracking"
        ],
        "supported_marketplaces": ["Letzshop", "Amazon", "eBay", "Etsy", "Shopify", "Other"],
        "auth_required": "Most endpoints require Bearer token authentication"
    }


@app.get("/health")
def health_check(db: Session = Depends(get_db)):
    """Health check endpoint"""
    try:
        # Test database connection
        db.execute(text("SELECT 1"))
        return {"status": "healthy", "timestamp": datetime.utcnow()}
    except Exception as e:
        logger.error(f"Health check failed: {e}")
        raise HTTPException(status_code=503, detail="Service unhealthy")


if __name__ == "__main__":
    import uvicorn

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