/*
  ESP32 HTTPClient Example
  PVS 2/3
*/

#include <WiFi.h>
#include <HTTPClient.h>


const char* ssid = "Wokwi-GUEST";
const char* password = "";
/***************************************/
const int Relay1_Pin = 4;
const int Relay2_Pin = 2;
String s = " ";
/**************************************/

// Google sc cript Ip and reguired credentials
String GOOGLE_SCRIPT_ID = "AKfycbwe_JvEaZY1GHn-l-VdVVlSt0ZuWTqCL_fumnGO-I3m4FlU2xjTSYUWqI8YEPtGz6iv7Q";// change Google script ID
String GOOGLE_SCRIPT_URL = "https://script.google.com/macros/s/AKfycbwe_JvEaZY1GHn-l-VdVVlSt0ZuWTqCL_fumnGO-I3m4FlU2xjTSYUWqI8YEPtGz6iv7Q/exec";

void setup() {
  Serial.begin(115200);
  pinMode(Relay1_Pin, OUTPUT);
  pinMode(Relay2_Pin, OUTPUT);
  
  WiFi.begin(ssid, password, 6);

  Serial.print("Connecting to WiFi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }

  Serial.print("OK! IP=");
  Serial.println(WiFi.localIP());  
}

void loop() {
/*-------------ส่งข้อมูลไป google sheet-----------------------*/
// Data to Send
  float string_temp = 10.00;
  float string_humi = 20.00;
  int string_lux = 30.00;
// URL & Data to Send  
  //String urlFinal= "https://script.google.com/macros/s/"+ GOOGLE_SCRIPT_ID + "/exec?FIELD1="+ string_temp +"&FIELD2="+ string_humi +"&FIELD3="+string_lux;
  String urlFinal= GOOGLE_SCRIPT_URL+"?FIELD1="+ string_temp +"&FIELD2="+ string_humi +"&FIELD3="+string_lux;
  Serial.print("Post data to spreadsheet!");
  Serial.println(urlFinal);
// Object http form HTTPClient
  HTTPClient http;
// Connect to WebApp with URL
  http.begin(urlFinal.c_str());
  http.setFollowRedirects(HTTPC_STRICT_FOLLOW_REDIRECTS);
// Get HTTP status Code
  int httpcode = http.GET();
  Serial.print("HTTP status Code: ");
  Serial.println(httpcode);

// Getting response from webApp
  String payload;
  if (httpcode > 0){
    payload = http.getString();
    Serial.println("Payload : "+ payload);
    s = payload;
  }
  http.end();
  controlRelay();
  delay(6000);
}

void controlRelay(){

    String R1 = s.substring(0, 1);
    String R2 = s.substring(3, 2);

    Serial.println(R1);
    Serial.println(R2);
  
    int relay_number1 = R1.toInt();
    int relay_number2 = R2.toInt();
  
    digitalWrite(Relay1_Pin,relay_number1);
    digitalWrite(Relay2_Pin,relay_number2);
}