#  Copyright (c) 2019. Tobias Kurze

import logging
import threading
import time

from flask import Flask, request
from flask_socketio import SocketIO, emit

from backend import app

logging.basicConfig()

app = Flask(__name__)
app.config['SECRET_KEY'] = 'secret!'

async_mode = 'threading'
async_mode = None
socketio = SocketIO(app, cors_allowed_origins="*", async_mode=async_mode)
thread = None
thread_lock = threading.Lock()

clients = []


def background_thread():
    """Example of how to send server generated events to clients."""
    count = 0
    while True:
        socketio.sleep(3)
        print("server_event ")
        count += 1
        socketio.emit('server_event',
                      {'data': 'Server generated event', 'count': count},
                      )


def ack():
    print('message was received!')


@socketio.on('my_event')
def test_message(message: dict):
    print("received msg!")
    print(message)
    if isinstance(message, str):
        emit('my_response', 'tolle Antwort! (got only a string!)', callback=ack)
    else:
        emit('my_response', {'data': message['data']}, callback=ack)


@socketio.on('my broadcast event', namespace='/')
def test_message(message):
    emit('my response', {'data': message['data']}, broadcast=True)


@socketio.on('connect')
def test_connect():
    print("connected")
    global thread
    with thread_lock:
        if thread is None:
            thread = socketio.start_background_task(background_thread)
    emit('connect', "You are connected!")


@socketio.on('disconnect', namespace='/')
def test_disconnect():
    print('Client disconnected')


@socketio.on_error()
def handle_error(error):
    print(error)


def start_in_thread():
    socket_thread = threading.Thread(target=lambda appl, host, port: socketio.run(app=appl, host=host, port=port),
                                     args=(app, "localhost", 5000))
    socket_thread.start()
    return socket_thread


@app.route("/")
def root():
    return """<script src="//cdnjs.cloudflare.com/ajax/libs/socket.io/2.2.0/socket.io.js" integrity="sha256-yr4fRk/GU1ehYJPAs8P4JlTgu0Hdsp4ZKrx8bDEDC3I=" crossorigin="anonymous"></script>
<script type="text/javascript" charset="utf-8">
    var socket = io();
    socket.on('connect', function() {
        console.log("connected!");
        socket.emit('my_event', {data: 'I am connected!'});
    });
    socket.on('my_response', function(resp) {
        console.log('got response:');
        console.log(resp);
    });   
</script>"""


if __name__ == '__main__':
    print("running main")
    # socketio.init_app(app, cors_allowed_origins="*")

    #while len(clients) <= 0:
    #    time.sleep(1)

    #while True:
    #    time.sleep(2)
    #    print("sending message...")
    #    socketio.send("lala")
    #    print("send lala")
    #    print(clients[0])
    #    socketio.emit("server_event", {'msg': "tolle nachricht"}, room=clients[0])
    #    with app.test_request_context('/'):
    #        socketio.emit('server_event', "You!: server_event", namespace="/")
    #    print("send bla")


    #socketio.run(app, host="localhost", port=5000, debug=True)
    start_in_thread()
    while True:
        time.sleep(2)
        print("still running! :)")
    # socketio.run(app, debug=True)
    # ENDE

    # t.join()