app.py

import flask
import flask_cors
import os

message = {"123": {}}

app = flask.Flask(__name__)
flask_cors.CORS(app)

@app.route('/')
def index():
    return flask.render_template('index.html')

@app.route('/postMessage', methods=['POST'])
def post():
    
    nameIn = flask.request.get_json()['nameInput']
    messageIn = flask.request.get_json()['messageInput']
    roomidIn = flask.request.get_json()['roomIdInput']
    
    n = len(message[roomidIn])+1
    
    message[roomidIn].update({"message"+str(n): {"name": nameIn, "message": messageIn}})
    
    return flask.jsonify("success": True)

@app.route('/messages', methods=['POST'])
def messages():
    roomidInput = flask.request.get_json()['roomIdInput']
    return flask.jsonify(message[roomidInput])



if __name__ == "__main__":
    app.run(debug=True,host="0.0.0.0",port=5000)