# load config so everything else can work
from pillar_tool.db.base_model import as_dict
from pillar_tool.schemas import HostCreateParams
from pillar_tool.util import load_config, config
load_config()

from starlette.middleware.base import BaseHTTPMiddleware

from pillar_tool.db.database import get_connection
from pillar_tool.db.queries.auth_queries import create_user
from pillar_tool.db.queries.host_queries import *


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.middleware.db_connection import db_connection_middleware
from pillar_tool.db.database import run_db_migrations


# run any pending migrations
run_db_migrations()

# get a database connection
db = get_connection()

# create default user if it does not exist
# noinspection PyBroadException
try:
    create_user(db, "admin", "admin")
except:
    pass

# commit and close the db
db.commit()
db.close()


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

    return response

def on_db_error(request: Request, exc: Exception):
    response = PlainTextResponse(str(exc), status_code=500)

    return response

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

app = FastAPI()
app.add_middleware(AuthenticationMiddleware, backend=BasicAuthBackend(), on_error=on_auth_error)
app.add_middleware(BaseHTTPMiddleware, dispatch=db_connection_middleware)
app.exception_handler(Exception)(on_general_error)


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

@app.get("/health")
async def health():
    # TODO: improve health check
    return {"message": "Healthy"}


@app.get("/pillar/{host}")
async def pillar_get(req: Request, host: str):
    print(req.headers)
    #return JSONResponse(content=collect_pillar_data(host))
    return JSONResponse({})

@app.post("/pillar/{host}")
async def pillar_set(request: Request, host: str, value: str):
    print(request.headers)

@app.get("/hosts")
async def host_list(request: Request):
    all_hosts = list_all_hosts(request.state.db)
    return JSONResponse([as_dict(x) for x in all_hosts])

@app.post("/host/{fqdn}")
async def host_add(request: Request, fqdn: str, params: HostCreateParams):
    new_host = create_host(request.state.db, fqdn, params.parent)
    if params.parent:
        print(f"Created new host: {new_host} with parent: {params.parent}")
    else:
        print(f"Created new host: {new_host}")