const express = require('express');
const http = require('http');
const app = express();
const path = require('path');

const server = http.createServer(app); //cria o servidor socket
const io = require('socket.io')(server);

io.on('connection', socket => {
    console.log('Usuário conectado:[ID]', socket.id); //mostra no servidor quando um usuário se conecta e informa o id dele

    socket.on('sendMessage', data => {
        console.log('Message received: ' + data)
        // socket.broadcast.emit('receivedMessage', data) //Envia a mensagem para todos conectados na aplicação
    });
});

server.listen(5000, () => {         //configuração da porta 
    console.log('Servidor online! porta 5000');
});

#include <Arduino.h>
#include <WiFi.h>

#include <ArduinoJson.h>

#include <WebSocketsClient.h>
#include <SocketIOclient.h>

//#include <Hash.h>

const char* ssid     = "Acerte o nome do Ratico";
const char* password = "HichiKko S2";

SocketIOclient socketIO;

void hexdump(const void *mem, uint32_t len, uint8_t cols = 16) {
  const uint8_t* src = (const uint8_t*) mem;
  Serial.printf("\n[HEXDUMP] Address: 0x%08X len: 0x%X (%d)", (ptrdiff_t)src, len, len);
  for (uint32_t i = 0; i < len; i++) {
    if (i % cols == 0) {
      Serial.printf("\n[0x%08X] 0x%08X: ", (ptrdiff_t)src, i);
    }
    Serial.printf("%02X ", *src);
    src++;
  }
  Serial.printf("\n");
}

void socketIOEvent(socketIOmessageType_t type, uint8_t * payload, size_t length) {
  switch (type) {
    case sIOtype_DISCONNECT:
      Serial.printf("[IOc] Disconnected!\n");
      break;
    case sIOtype_CONNECT:
      Serial.printf("[IOc] Connected to url: %s\n", payload);

      // join default namespace (no auto join in Socket.IO V3)
      socketIO.send(sIOtype_CONNECT, "/");
      break;
    case sIOtype_EVENT:
      Serial.printf("[IOc] get event: %s\n", payload);
      break;
    case sIOtype_ACK:
      Serial.printf("[IOc] get ack: %u\n", length);
      hexdump(payload, length);
      break;
    case sIOtype_ERROR:
      Serial.printf("[IOc] get error: %u\n", length);
      hexdump(payload, length);
      break;
    case sIOtype_BINARY_EVENT:
      Serial.printf("[IOc] get binary: %u\n", length);
      hexdump(payload, length);
      break;
    case sIOtype_BINARY_ACK:
      Serial.printf("[IOc] get binary ack: %u\n", length);
      hexdump(payload, length);
      break;
  }
}

void setup() {
  Serial.begin(115200);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());

  delay(5000);

  Serial.setDebugOutput(true);

  Serial.println();
  Serial.println();
  Serial.println();

  // server address, port and URL
  socketIO.begin("192.168.0.101", 5000, "/");

  // event handler
  socketIO.onEvent(socketIOEvent);
}

unsigned long messageTimestamp = 0;
void loop() {
  socketIO.loop();
}