from contextlib import asynccontextmanager

from fastapi import FastAPI
from starlette.middleware.authentication import AuthenticationMiddleware
from starlette.requests import Request
from fastapi.responses import HTMLResponse, PlainTextResponse
from starlette.responses import JSONResponse

from pillar_tool.middleware.basicauth_backend import BasicAuthBackend
from pillar_tool.util import load_config, config
from pillar_tool.db import run_db_migrations

# load config so everything else can work
load_config()


@asynccontextmanager
async def app_lifespan(app: FastAPI):
    run_db_migrations()

    yield


def on_auth_error(request: Request, exc: Exception):
    response = PlainTextResponse(str(exc), status_code=401)
    response.headers["WWW-Authenticate"] = "Basic"

    return response

def on_general_error(request: Request, exc: Exception):
    print("wtf?")
    response = PlainTextResponse(str(exc), status_code=500)

app = FastAPI(lifespan=app_lifespan)
app.add_middleware(AuthenticationMiddleware, backend=BasicAuthBackend(), on_error=on_auth_error)
app.exception_handler(Exception)(on_general_error)


@app.get("/")
async def root():
    return {"message": "Hello World"}

@app.get("/pillar/{host}")
async def pillar(host: str):
    return JSONResponse(content=collect_pillar_data(host))