from django.conf import settings

# Not at the top of the file because we first need to setup django
from fastapi import FastAPI, Request, status
from fastapi.encoders import jsonable_encoder
from fastapi.exceptions import RequestValidationError
from fastapi.middleware.cors import CORSMiddleware
from fastapi.middleware.trustedhost import TrustedHostMiddleware
from fastapi.staticfiles import StaticFiles

from .exceptions import CustomHttpException
from .msgpack import MsgpackResponse
from .routers.authentication import authentication_router
from .routers.collection import collection_router, item_router
from .routers.invitation import invitation_incoming_router, invitation_outgoing_router
from .routers.member import member_router
from .routers.websocket import websocket_router


def create_application(prefix="", middlewares=[]):
    app = FastAPI(
        title="Etebase",
        description="The Etebase server API documentation",
        externalDocs={
            "url": "https://docs.etebase.com",
            "description": "Docs about the API specifications and clients.",
        },
        # FIXME: version="2.5.0",
    )
    VERSION = "v1"  # noqa: N806
    BASE_PATH = f"{prefix}/api/{VERSION}"  # noqa: N806
    COLLECTION_UID_MARKER = "{collection_uid}"  # noqa: N806
    app.include_router(authentication_router, prefix=f"{BASE_PATH}/authentication", tags=["authentication"])
    app.include_router(collection_router, prefix=f"{BASE_PATH}/collection", tags=["collection"])
    app.include_router(item_router, prefix=f"{BASE_PATH}/collection/{COLLECTION_UID_MARKER}", tags=["item"])
    app.include_router(member_router, prefix=f"{BASE_PATH}/collection/{COLLECTION_UID_MARKER}", tags=["member"])
    app.include_router(
        invitation_incoming_router, prefix=f"{BASE_PATH}/invitation/incoming", tags=["incoming invitation"]
    )
    app.include_router(
        invitation_outgoing_router, prefix=f"{BASE_PATH}/invitation/outgoing", tags=["outgoing invitation"]
    )
    app.include_router(websocket_router, prefix=f"{BASE_PATH}/ws", tags=["websocket"])

    if settings.DEBUG:
        from .routers.test_reset_view import test_reset_view_router

        app.include_router(test_reset_view_router, prefix=f"{BASE_PATH}/test/authentication")

    app.add_middleware(
        CORSMiddleware,
        allow_origin_regex="https?://.*",
        allow_credentials=True,
        allow_methods=["*"],
        allow_headers=["*"],
    )
    app.add_middleware(TrustedHostMiddleware, allowed_hosts=settings.ALLOWED_HOSTS)

    for middleware in middlewares:
        app.add_middleware(middleware)

    @app.on_event("startup")
    async def on_startup() -> None:
        from .redis import redisw

        await redisw.setup()

    @app.on_event("shutdown")
    async def on_shutdown():
        from .redis import redisw

        await redisw.close()

    @app.exception_handler(CustomHttpException)
    async def custom_exception_handler(request: Request, exc: CustomHttpException):
        return MsgpackResponse(status_code=exc.status_code, content=exc.as_dict)

    @app.exception_handler(RequestValidationError)
    async def validation_exception_handler(request: Request, exc: RequestValidationError):
        return MsgpackResponse(
            status_code=status.HTTP_422_UNPROCESSABLE_ENTITY,
            content=jsonable_encoder({"detail": exc.errors()}),
        )

    app.mount(settings.STATIC_URL, StaticFiles(directory=settings.STATIC_ROOT), name="static")

    return app