import uvicorn
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from fastapi.openapi.utils import get_openapi

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

# Create the app instance
app = FastAPI(
    title=settings.PROJECT_NAME,
    description="Authentication and Inventory API for ecommerce",
    version="0.1.0",
    openapi_url="/openapi.json",
)

# Configure CORS
app.add_middleware(
    CORSMiddleware,
    allow_origins=[origin for origin in settings.BACKEND_CORS_ORIGINS],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# Root endpoint
@app.get("/")
async def root():
    """Root endpoint returns basic API information."""
    return {
        "title": settings.PROJECT_NAME,
        "documentation": "/docs",
        "health_check": "/health"
    }

# Health check endpoint
@app.get("/health")
async def health():
    """Health check endpoint."""
    return {"status": "ok"}

# Custom OpenAPI schema
def custom_openapi():
    if app.openapi_schema:
        return app.openapi_schema
    
    openapi_schema = get_openapi(
        title=settings.PROJECT_NAME,
        version="0.1.0",
        description="Authentication and Inventory API for ecommerce",
        routes=app.routes,
    )
    
    app.openapi_schema = openapi_schema
    return app.openapi_schema

app.openapi = custom_openapi

# Include API router
app.include_router(api_router)

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