import os

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

from trauma.core.config import settings
from trauma.core.wrappers import TraumaResponseWrapper, ErrorTraumaResponse


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

    from trauma.api.chat import chat_router
    app.include_router(chat_router, tags=['chat'])

    from trauma.api.message import message_router
    app.include_router(message_router, tags=['message'])


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

    static_directory = os.path.join(settings.BASE_DIR, 'static')
    if not os.path.exists(static_directory):
        os.makedirs(static_directory)

    app.mount(
        '/static',
        StaticFiles(directory='static'),
    )

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

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

    return app