from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from starlette.exceptions import HTTPException as StarletteHTTPException

from idreamers.core.config import settings
from idreamers.core.wrappers import PilotResponseWrapper, ErrorPilotResponse


def create_app() -> FastAPI:
    app = FastAPI()

    from idreamers.api.calculation import calculation_router
    app.include_router(calculation_router, tags=['calculation'])

    app.add_middleware(
        CORSMiddleware,
        allow_origins=["*"],
        allow_methods=["*"],
        allow_headers=["*"],
    )

    @app.exception_handler(StarletteHTTPException)
    async def http_exception_handler(_, exc):
        return PilotResponseWrapper(
            data=None,
            successful=False,
            error=ErrorPilotResponse(message=str(exc.detail))
        ).response(exc.status_code)

    @app.get("/")
    async def read_root():
        return {"calculation": "Hello world!"}

    return app