from typing import Optional

from flask import blueprints
from flask import make_response
from flask import request
from flask_api import status
from flask_login import login_user
from monsun_backend import error
from monsun_backend import marshmallow_schemas
from monsun_backend import models

bp = blueprints.Blueprint("login", __name__)


@bp.route(
    rule="/login",
    methods=["POST"],
)
def login():
    email_: Optional[str] = request.form.get("email")
    if email_ is None:
        raise error.BadRequest("email is missing")

    user_: models.User = models.User.query.filter_by(email=email_).first()
    if not user_:
        raise error.BadRequest("User does not exist")

    if user_.check_password(password=request.form.get("password")):
        if login_user(user_):
            return make_response(
                marshmallow_schemas.user_schema.jsonify(user_),
                status.HTTP_200_OK,
            )
        else:
            # this shouldn't happen, but one never knows...
            raise error.InternalServerError("Could not login user")
    else:
        raise error.Unauthorized("Password is incorrect")