from pathlib import Path

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from fastapi.staticfiles import StaticFiles

from app.api.router import api_router
from app.core.config import get_settings
from app.core.errors import register_exception_handlers


def create_app() -> FastAPI:
    settings = get_settings()
    app = FastAPI(
        title="Desi Clans API",
        version="0.2.0",
        debug=settings.environment.lower() == "development",
    )

    register_exception_handlers(app)

    app.add_middleware(
        CORSMiddleware,
        allow_origins=settings.cors_origin_list,
        allow_credentials=True,
        allow_methods=["*"],
        allow_headers=["*"],
    )

    if settings.storage_backend.lower() == "local":
        upload_path = Path(settings.upload_dir)
        upload_path.mkdir(parents=True, exist_ok=True)
        app.mount("/media", StaticFiles(directory=str(upload_path)), name="media")

    if settings.environment.lower() == "production":
        app.openapi_url = None

    app.include_router(api_router, prefix="/api")

    return app


app = create_app()