/*
  Forum: https://forum.arduino.cc/t/working-hours-logic/1228983/11
  Wowki: https://wokwi.com/projects/390883908441457665
  
*/

int startTime;
int stopTime;


void setup() {
  Serial.begin(115200);
  calcStartStopTime(8,10,12,0);
  checkTime(7,0);
  checkTime(10,12);
  checkTime(13,0);
  calcStartStopTime(12,0,8,10);
  checkTime(7,0);
  checkTime(10,12);
  checkTime(13,0);

  calcStartStopTime(12,0,12,0);
  checkTime(7,0);

}

void loop() {
}

void calcStartStopTime( int startH, int startM, int stopH, int stopM){
  startTime = startH*60+startM;
  stopTime  = stopH*60 +stopM;
  Serial.print("\nStart Time : ");
  printTime(startH, startM);
  Serial.print("  Stop Time : ");
  printTime(stopH, stopM);
  Serial.println();
}

void checkTime(int hour, int minute) {
  boolean isWorkingTime = false;
  unsigned long timeInMinutes = hour * 60 + minute;
  printTime(hour, minute);
  byte mode;
  if (stopTime < startTime) {
    mode = 0;  // start  after stop
  } else {
    mode = 1;  // stop after start
  }
  if (startTime == stopTime) {
    mode = 2; // start and stop at the same time 
  }
  switch (mode) {
    case 0:  // stop before start
      isWorkingTime = !(timeInMinutes >= stopTime && timeInMinutes < startTime );
      break;
    case 1:  // Deactivation later
      isWorkingTime = (timeInMinutes >= startTime && timeInMinutes < stopTime );
      break;
    case 2:  // At the same time ... ?!! 
      Serial.println("All day working OR lazy?");
      break;
  }
  if (mode != 2 ){
    Serial.println(isWorkingTime ? "Working Time" : "Free Time");
  }
}

void printTime(int h, int m){
  if (h < 10) {
    Serial.print('0');
  }
  Serial.print(h);
  Serial.print(":");
  if (m < 10) {
    Serial.print('0');
  }
  Serial.print(m);
  Serial.print('\t');

}