#define CLK 2
#define DIO 3
#define RELEY_PIN 10
#include "GyverTM1637.h"
const int DISP_PIN = A1;

int val = 0;
int timer = 1;
bool relayOpened = false;
GyverTM1637 disp(CLK, DIO);
void setup() {
  // put your setup code here, to run once:  
  pinMode(RELEY_PIN, OUTPUT);
  closeRelay();
  Serial.begin(9600);
  disp.clear();
  disp.brightness(0);
}

void loop() {
  // put your main code here, to run repeatedly: 
  val = analogRead(DISP_PIN);
  switch (buttonFromValue(val))
  {
    case 1:
      addTimer();
    break;
    case 2:
      declineTimer();
    break;
     case 3:
      shoot();
    break;
    case 4:
      workingLight();
    break;
    
  }
 disp.displayInt(timer); 
}

//Открывается по низкому сигналу, com с NO
void openRelay()
{
  digitalWrite(RELEY_PIN, LOW);
  relayOpened = true;
}

//Закрываясь замыкает com с NC
void closeRelay(){
  digitalWrite(RELEY_PIN, HIGH);
  relayOpened = false;
}

void addTimer()
{
    delay(500);
    if (buttonFromValue(analogRead(DISP_PIN)) == 1)
    {
      timer = timer * 2;  
    }
    else
    {
      timer++;  
    }
}

void declineTimer()
{
    if(timer > 1)
    {
      delay(500);
      if (buttonFromValue(analogRead(DISP_PIN)) == 2)
      {
       timer = timer / 2;  
      }
      else if (timer>1)
      {
        timer--;  
      }  
    }
}

void shoot()
{
  closeRelay();
  int ms = timer * 1000;
   delay(1000);
   openRelay();
   while (ms>0)
   {
      delay(1000);
      ms = ms - 1000;
      disp.displayInt(ms/1000); 
   }
   closeRelay();
  
}

void workingLight()
{
  if ( relayOpened == true )
  {
    closeRelay();
  }
  else 
  {
    openRelay();
  } 
  delay(500);
    
}

byte buttonFromValue(int analogValue)
{
  if (analogValue>950)
  {
    return 4;  
  }
  if (analogValue > 713 && analogValue <  950)
  { 
    return 3;
  }
  if (analogValue > 506 && analogValue < 713)
  {
    return 2;  
  }
  if (analogValue > 200 && analogValue < 506)
  {
    return 1;  
  }
  return 0;
  
}