"""User API blueprint and endpoint definitions."""
from flask import Blueprint, abort, request

from corvus.api.decorators import return_json
from corvus.api.model import APIResponse
from corvus.middleware import authentication_middleware
from corvus.model import User
from corvus.service import user_service, transformation_service
from corvus.service.role_service import Role

USER_BLUEPRINT = Blueprint(
    name='user', import_name=__name__, url_prefix='/user')


@USER_BLUEPRINT.route('/<name>', methods=['GET'])
@return_json
@authentication_middleware.require_token_auth
def get_user(name: str) -> APIResponse:
    """
    Get a user.

    :return: user if exists, else 404
    """
    user = user_service.find_by_name(name)
    if user is not None:
        return APIResponse(user, 200)
    return abort(404)


@USER_BLUEPRINT.route('/', methods=['POST'])
@return_json
@authentication_middleware.require_token_auth
@authentication_middleware.require_role(required_role=Role.ADMIN)
def register_user() -> APIResponse:
    """
    Register a user with the service.

    :return: The newly registered User
    """
    new_user: User = transformation_service.deserialize_model(
        User.__name__, request.json)
    registered_user = user_service.register(
        name=new_user.name,
        password=None,
        role=new_user.role
    )
    return APIResponse(payload=registered_user, status=200)