# -*- coding: utf-8 -*-
import logging

from flask import session, request, abort, Blueprint, Response, current_app, flash

from src import models
from src.models import db

auth = Blueprint("auth", __name__)




@auth.route('/', methods=["POST", "GET"])
def start():
    try:
        offer ="""  - generate a joke /generate_joke \n
                    - get a joke /get_joke \n
                    - see list of jokes /show_jokes \n
                    - delete the joke /delete_joke \n
                    - update the joke \n"""
        if 'username' in session:
            name = session['username']
            logging.info("Greeting in start")
            return Response(
                    response=f'Hi {name}. Welcome back!\n{offer}',
                    status=200,
                    headers={"Access-Control-Allow-Credentials": "true"})
        elif 'username' not in session:
            logging.error("Forbidden acces in /")
            return Response(
                    response="Forbidden. Go to /auth/login or /auth/register to have an access.\n",
                    status=401)
    except Exception as e:
        logging.error(e)
        return Response(
                response="Unnexpected behaviour\n",
                status=500)

@auth.route('/register', methods=["GET", "POST"])
def register():
    if True:
        username = request.json.get("username")
        password = request.json.get("password")
        user = models.User.query.filter(models.User.username == username).first()
        if user is not None:
            return Response(
                response="Already exists!\n",
                status=409)

        if username and password:
            user = models.User(username, password)
            db.session.add(user)
            db.session.commit()
            logging.info("Login by user = {}".format(username))
            print(models.User.query.all())
            return Response(
                       response="You're registred successfuly\n",
                       status=200,
                       headers={"Access-Control-Allow-Credentials": "true"})
        else:
            raise Exception
    else:
    # except Exception as e:
        logging.error(e)
        return Response(
            response=f"{e}\n",
            status=400) # Not Acceptable


@auth.route("/login", methods=["POST"])
def login():
    try:
        username = request.json.get("username")
        password = request.json.get("password")
        print(username, password)
        user = models.User.query.filter(models.User.username == username).first()
        print(user)
        # return Response(user, 200)
        if user is not None and user.check_password(password):
            # session.clear()
            session["username"] = username
            logging.info("Login by user = {}".format(username))
            return Response(
                        response=f"You're logged as {username}!\n",
                        status=200,
                        headers={"Access-Control-Allow-Credentials": "true"})
        else:
            raise Exception
    except Exception as e:
        logging.error(e)
        return Response(
                response=f"Wrong credentials, {username}!\n",
                status=401)


@auth.route("/logout", methods=["GET", "POST"])
def logout():
    try:
        logging.info("Logout by user = {}".format(session.get("username")))
        session.pop("username", None)
        logging.info("Successfuly logged out")
        session.clean()
        return Response(
                    response="You're logged out.\n",
                    status=200)
    except Exception as e:
        logging.error(e)
        return Response(
                    response="Unnexpected behaviour.\n",
                    status=500)

@auth.before_request
def before_request():
    try:
        if 'username' not in session and request.endpoint == "auth.register" \
                or request.endpoint != "auth":
            pass
        else:
            raise Exception
    except Exception as e:
        logging.error(e)
        return Response(
                    response="Access denied.\n",
                    status=401)