from flask import Flask
from flask import session
from flask import request
from flask import json
from flask import render_template
from flask import redirect
from flask import session
from flask import url_for
import uuid
import redis
r = redis.Redis()
sid = str(uuid.uuid4())

user = {"users": [{"password": "Sikorski", "username": "Andrzej"}, {"password": "asdfg", "username": "admin"}]}
rval = json.dumps(user)
r.set('user1', rval)

app = Flask(__name__)
app.secret_key = b'0293jr i(UHoiawu hft923'
print('SID: '+sid)

@app.route('/sikorska/webapp')
def home():
    if 'username' in session:
        return "OK"
       # return render_template('upload.html')
    return redirect(url_for('login'))


@app.route('/sikorska/webapp/login', methods=['GET', 'POST'])
def login():
    if 'username' in session:
        return redirect(url_for('home'))
    error = None
    if request.method == 'POST':
        if login_check(request.form['username'], request.form['password']):
            session['username'] = request.form['username']
           # session['uuid'] = uuid.uuid4()
            return redirect(url_for('home'))
        else:
            error = "Invalid Credentials. Please try again."
    return render_template('loginpg.html', error=error)


@app.route('/sikorska/webapp/logout')
def logout():
    session.pop('username', None)
   #session['uuid'] = None
    return redirect(url_for('login'))


def login_check(username, password):
    data = r.get('user1')
    result = json.loads(data)
    for row in result['users']:
        if row['username'] == username:
            if row['password'] == password:
                return True
    return False