// First include the header file
#include <IRremote.h> // include the library

// Define the IRrecv Pin
#define Remote_RECEIVER 2                              // Signal Pin of IR receiver
uint16_t Relay[4] ={32, 33, 25, 26};                // Create an array that holds the number GPIOs connected to the relay
bool Relay_state[4];                               // Each relay's state
#define size sizeof(Relay)/sizeof(Relay[4])       // Define the size of the array

IRrecv Remote(Remote_RECEIVER);                  // Instantiate an IRrecv Object
void setup() {
  // put your setup code here, to run once:
  Remote.enableIRIn(); // Start the receiver   // Enable the IRIN Pin
  pinMode(Relay[0], OUTPUT);
  for(int i= 0; i<=size; i++)
  {/* Set all of the GPIOs connected to the relays to OUTPUT MODE */
    pinMode(Relay[i], OUTPUT);
  }
}

void loop() {
  // put your main code here, to run repeatedly:
  if (Remote.decode()) {                                                 //Decode the the data if there is.

    /*  Command 1 */
    if((Remote.decodedIRData.command)==48)
    {
      if(Relay_state[0])
        {
          Relay_state[0] =!Relay_state[0];
          digitalWrite(Relay[0], Relay_state[0]);
        }
      else
        {
          Relay_state[0] =!Relay_state[0];
          digitalWrite(Relay[0], Relay_state[0]);
        }
    }
     /*  Command 2 */
    if((Remote.decodedIRData.command)==24)
    {
      if(Relay_state[1])
        {
          Relay_state[1] =!Relay_state[1];
          digitalWrite(Relay[1], Relay_state[1]);
        }
      else
        {
          Relay_state[1] =!Relay_state[1];
          digitalWrite(Relay[1], Relay_state[1]);
        }
    }
       /*  Command 3 */
    if((Remote.decodedIRData.command)==122)
    {
      if(Relay_state[2])
        {
          Relay_state[2] =!Relay_state[2];
          digitalWrite(Relay[2], Relay_state[2]);
        }
      else
        {
          Relay_state[2] =!Relay_state[2];
          digitalWrite(Relay[2], Relay_state[2]);
        }
    }
      /*  Command 4 */
    if((Remote.decodedIRData.command)==16)
    {
      if(Relay_state[3])
        {
          Relay_state[3] =!Relay_state[3];
          digitalWrite(Relay[3], Relay_state[3]);
        }
      else
        {
          Relay_state[3] =!Relay_state[3];
          digitalWrite(Relay[3], Relay_state[3]);
        }
    }

    /* All relays */
    if((Remote.decodedIRData.command)==162)
    {
      for(int i =0; i<=size; i++)
        {
        if(!Relay_state[i])
          {
            Relay_state[i] =!Relay_state[i];
            digitalWrite(Relay[i], Relay_state[i]);
          }
        else
          {
            Relay_state[i] =!Relay_state[i];
            digitalWrite(Relay[i], Relay_state[i]);
          }
        }
    }
    
     /*  Resume the receiver */
    Remote.resume();  // Receive the next value
  }
  
}

// void Reset_fun()
// { /* This function resets all the relay state to their default states. */
//   for(int i= 0; i<=size; i++)
//   {
//     Relay_state[i] = false;
//   }
// }