import datetime
import os

import jwt
from flask import Blueprint, jsonify, request

from db import db
from helper_functions import check_password, hash_password, get_token, extract_token_data
from models import User

users_blueprint = Blueprint('users', __name__, url_prefix='/api')
__location__ = os.path.realpath(os.path.join(os.getcwd(), os.path.dirname(__file__)))


@users_blueprint.route('/users', methods=['GET'])
def users():
    res = []
    for i in User.query.all():
        res.append(i.as_dict())

    return jsonify({"status": 200, "data": res})


@users_blueprint.route('/login', methods=['POST'])
def login():
    request_data = request.get_json()
    username = request_data['username']
    password = request_data['password']

    user = db.session.query(User).filter_by(username=username).first()
    if check_password(user.password, password):
        token = jwt.encode({'username': user.username, 'exp': datetime.datetime.utcnow() + datetime.timedelta(minutes=45)}, os.getenv('SECRET_KEY'), "HS256")

        return jsonify({"status": 200, "text": "Successfully logged in", "data": token})
    else:
        return jsonify({"status": 500, "text": "Unable to login"})


@users_blueprint.route('/logout', methods=['GET'])
def logout():
    # TODO
    return jsonify({"status": 200, "text": "Successfully logged out"})


@users_blueprint.route('/register', methods=['POST'])
def register():
    request_data = request.get_json()
    username = request_data['username']
    password = request_data['password']

    user = db.session.query(User).filter_by(username=username).first()
    if user is None:
        # Username doesn't exist yet
        user = User(
            username=username,
            password=hash_password(password),
            admin=False
        )
        db.session.add(user)
        db.session.commit()

        return jsonify({"status": 200, "text": "Successfully registered user", "data": user.as_dict()})
    else:
        return jsonify({"status": 500, "text": "Username already exist"})