Added diagram & node red

arduino/sketch_main/NodeRedWebhook.h

-// The MIT License
-// 
-// Copyright (c) 2015 Neil Webber
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
-
-// ====================================================================
-// ====================================================================
-// An adapted version of IFTTT Trigger by Neil Webber
-// Original: https://gist.github.com/outofmbufs/d6ced37b49a484c495f0
-// 
-// Adaptation from: https://www.siytek.com
-//
-// How to use:
-// 1. Place AnotherIFTTTWebhook.h in the same directory as your project
-// 2. Add #include "AnotherIFTTTWebhook.h" to your main project file
-// 3. Send webhook using function in main file:
-//    send_webhook(EVENT, KEY, Value1, Value2, Value3);
-// ====================================================================
-// ====================================================================
-
 WiFiClient client;
 
 char *append_str(char *here, char *s) {

diagramme/network_diagram.drawio

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node-red/flows.json

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msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":370,"y":600,"wires":[["b91c0314.1bc468"]]},{"id":"930cfe57.261cf8","type":"function","z":"d8215ebc.732dd8","name":"Left","func":"flow.set(\"event\", \"left\");\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":370,"y":680,"wires":[["b91c0314.1bc468"]]},{"id":"20657284.7d0816","type":"function","z":"d8215ebc.732dd8","name":"Update Participants","func":"const event = flow.get(\"event\");\nif(event === \"left\"){\n    msg.payload[0] = Number(msg.payload[0] || 0) - 1;\n}\nif(event === \"joined\"){\n    msg.payload[0] = Number(msg.payload[0] || 0) + 1;\n}\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":380,"y":780,"wires":[["3a06e922.048316","224d9288.f2b70e"]]},{"id":"224d9288.f2b70e","type":"switch","z":"d8215ebc.732dd8","name":"","property":"payload[0]","propertyType":"msg","rules":[{"t":"eq","v":"0","vt":"str"}],"checkall":"true","repair":false,"outputs":1,"x":610,"y":780,"wires":[[]]},{"id":"aee028e6.84f5a","type":"GSheet","z":"d8215ebc.732dd8","creds":"976f5bd4.52fe4","method":"get","action":"","sheet":"1NXADNkKZ02HHQZlrX3o4HwtVl0UBU6lH8LqV5HMVGwM","cells":"Sheet2!A1","flatten":false,"name":"Read Sheet current users","x":870,"y":400,"wires":[["de7aaa73.afc3b"]]},{"id":"de7aaa73.afc3b","type":"function","z":"d8215ebc.732dd8","name":"Should close?","func":"\nif(flow.get(\"state\") === \"destroy\"){\n   flow.set(\"state\", Number(msg.payload[0]) - 1 === 0 ? \"destroy\" : undefined); \n}\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":640,"y":460,"wires":[["ee5fdcdc.299128"]]},{"id":"679962ee.0e161c","type":"debug","z":"d8215ebc.732dd8","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":390,"y":460,"wires":[]},{"id":"976f5bd4.52fe4","type":"gauth"}]
\ No newline at end of file