#include <TM1637.h>

const int CLK = 2;
const int DIO = 3;

const int potIn = A7;

int timeSet = 0;
int displayMin = 0;
int displayHour = 0;

bool settingTime = false;
bool readingMode = false;
 
int timeCount = 0;
long int milsecondCount = 0;

long int t1;
long int t2;


TM1637 tm(CLK, DIO);

void setup() {
  tm.init();
  tm.set(BRIGHT_DARKEST);

  Serial.begin(9600);
}

unsigned int counter = 0;


void timedDelay(int time){
  delay(time);
  timeCount+=time/60000;
}

void loop() {

  t1 = millis();

  if(analogRead(A1) > 1000 && analogRead(A2) > 1000){
    //Set time count
    delay(250);
    while(!(analogRead(A1) > 1000 && analogRead(A2) > 1000)){

      timeCount = analogRead(potIn)*1.47;

      if(timeCount > 1440){
        timeCount = 1440;
      }

      //Convert to time
      displayHour = timeCount/60;
      displayMin = timeCount%60;

      //Display Set Time
      tm.display(0, (displayHour / 10) % 10);
      tm.display(1, (displayHour / 1) % 10);
      tm.display(2, (displayMin / 10) % 10);
      tm.display(3, displayMin % 10);
    }
    delay(250);
  }
  

  else if(analogRead(A1) > 1000){
    settingTime = !settingTime;
    timedDelay(250);
  }

  else if(analogRead(A2) > 1000){
    readingMode = !readingMode;
    timedDelay(250);
  }



  if(settingTime){
    digitalWrite(7, HIGH);

    timeSet = analogRead(potIn)/4;
    timeSet += 300; //Five hours past midnight

    //Convert to time
    displayHour = timeSet/60;
    displayMin = timeSet%60;

    //Display Set Time
    tm.display(0, (displayHour / 10) % 10);
    tm.display(1, (displayHour / 1) % 10);
    tm.display(2, (displayMin / 10) % 10);
    tm.display(3, displayMin % 10);

  }

  else{
      //Convert to time
      displayHour = timeCount/60;
      displayMin = timeCount%60;

      //Display Set Time
      tm.display(0, (displayHour / 10) % 10);
      tm.display(1, (displayHour / 1) % 10);
      tm.display(2, (displayMin / 10) % 10);
      tm.display(3, displayMin % 10);
  }

  if(readingMode || timeCount == timeSet){
    digitalWrite(7, HIGH);
  }

  else{
    digitalWrite(7, LOW);
  }


  t2 = millis();
  if(milsecondCount > 60000){ //Account for runtime speed
    timeCount++;
    milsecondCount = 0;
  }
  milsecondCount += t2-t1;

}