import uvicorn
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware

from app.api.api import api_router
from app.core.config import settings

app = FastAPI(
    title=settings.PROJECT_NAME,
    version=settings.VERSION,
    description="E-commerce API with FastAPI",
    openapi_url="/openapi.json",  # Make OpenAPI schema available at root path
    docs_url="/docs",
    redoc_url="/redoc",
    root_path=settings.ROOT_PATH,  # Support for deployments behind a proxy/subdirectory
)

# Set CORS middleware
app.add_middleware(
    CORSMiddleware,
    allow_origins=settings.CORS_ORIGINS,  # Use origins from settings
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
    expose_headers=["*"],
    max_age=600,  # Cache preflight requests for 10 minutes
)

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

# Root route to return API information
@app.get("/", tags=["Root"])
async def root():
    return {
        "name": settings.PROJECT_NAME,
        "version": settings.VERSION,
        "description": "Welcome to the E-commerce API",
        "docs": "/docs",
        "redoc": "/redoc",
        "api_prefix": settings.API_V1_STR,
        "endpoints": {
            "health": "/health",
            "auth": f"{settings.API_V1_STR}/auth",
            "users": f"{settings.API_V1_STR}/users",
            "products": f"{settings.API_V1_STR}/products",
            "categories": f"{settings.API_V1_STR}/categories",
            "cart": f"{settings.API_V1_STR}/cart",
            "orders": f"{settings.API_V1_STR}/orders"
        }
    }

# Health check endpoint
@app.get("/health", tags=["Health"])
async def health_check():
    return {"status": "healthy"}

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