from django.http import JsonResponse
from lemoncurry.middleware import ResponseException
from typing import Optional


def forbidden() -> ResponseException:
    return res("forbidden", 403)


def unauthorized() -> ResponseException:
    return res("unauthorized", 401)


def bad_req(msg: str) -> ResponseException:
    return res("invalid_request", msg=msg)


def bad_type(type: str) -> ResponseException:
    msg = "unsupported request type {0}".format(type)
    return res("invalid_request", 415, msg)


def bad_scope(scope: str) -> ResponseException:
    return res("insufficient_scope", 401, scope=scope)


def res(
    error: str,
    status: Optional[int] = 400,
    msg: Optional[str] = None,
    scope: Optional[str] = None,
):
    content = {"error": error}
    if msg is not None:
        content["error_description"] = msg
    if scope:
        content["scope"] = scope
    return ResponseException(JsonResponse(content, status=status))