//Record time as long as button is pressed + add it

#include <arduino-timer.h>
#include <LiquidCrystal_I2C.h>

struct Tstruct {
  //bool buttonPrevState  = 0;
  bool state;
  //bool buttonReleased   = 0;
  unsigned long seconds;
  unsigned long minutes;
  unsigned long hours;
  unsigned long days;
  unsigned long buttonPressedAt = 0;
};

struct Tstruct TimerTest; // make struct TimerTest

Timer<2, millis, const char *> b_timer;
Timer<2, millis, const char *> butt_timer;
LiquidCrystal_I2C lcd(0x27, 16, 2); // I2C address 0x27, 16 column and 2 rows


void setup() {
  // put your setup code here, to run once:
   Serial.begin(9600);
  TimerTest.state = 0; // is button pressed
  TimerTest.seconds = 0;
  TimerTest.minutes = 0;
  TimerTest.hours = 0;
  TimerTest.days = 0;
  TimerTest.buttonPressedAt = 0;
   b_timer.every(2000, PrintTime);
   butt_timer.every(100, read_butt);
   lcd.init(); //initialize the lcd
  lcd.backlight(); //open the backlight 
  pinMode(2, INPUT_PULLUP); // set  pin 2 input - Filter tank low
}

void loop() {
  // put your main code here, to run repeatedly:
  b_timer.tick();
  butt_timer.tick();
  Serial.print("butt_timer.expires: ");Serial.println(butt_timer.ticks());

}


bool read_butt(void *) {
  TimerTest.state = ReadDigitalButton(2);
  /*
  if (foo3 == true){
    Serial.print("FOO FTH: ");
    Serial.println(foo3);
    Seconds(0); // Reset seconds reading
  }
  */
  CheckTime(); // Checks the TimerTest.state and adds time if pressed
  return true;
}


void CheckTime(){
  static unsigned long SumOfTime = 0; // this is persistent
  Serial.println("in timertest");
  unsigned long Mn = millis();
  if (TimerTest.state == 1){ // Button is pressed
      SumOfTime = SumOfTime + Mn - TimerTest.buttonPressedAt;
      TimerTest.buttonPressedAt = Mn;
  }
  if (TimerTest.state == 0){ // Button is not pressed
      TimerTest.buttonPressedAt = Mn;
  }
  counttime(SumOfTime);
  return true;
}


void counttime(unsigned int TimeSinceStart){
  unsigned long seconds = TimeSinceStart / 1000UL;
  unsigned long minutes = seconds / 60;
  unsigned long hours = minutes / 60;
  unsigned long days = hours / 24;
  seconds %= 60;
  minutes %= 60;
  hours %= 24;
  TimerTest.seconds = seconds;
  TimerTest.minutes = minutes;
  TimerTest.hours = hours;
  TimerTest.days = days;
}

void PrintTime(void *){
  
  char buffer[30];
  sprintf (buffer, "%03lu %02lu:%02lu:%02lu",TimerTest.days, TimerTest.hours, TimerTest.minutes, TimerTest.seconds);
  Serial.println(buffer);
  //Serial.println(buttonPressedAt);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print(buffer);
  //lcd.setCursor(0,1);
  //lcd.print(S2); 
  
  return true;

}

bool ReadDigitalButton(int dport){
  bool foo = !digitalRead(dport); // 
  Serial.print(" Output: ");Serial.println(foo);
  return foo;
}