#include <MsTimer2.h>
//for our timing  to manage time properly or multitasking
#include <EEPROM.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <Button2.h>
#include "DHT.h"
#include "RTClib.h"
RTC_DS1307 rtc;
DateTime startTime1;
#define DHT1_PIN 23
#define DHT2_PIN 25
#define DHT3_PIN 27
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321

DHT dht1(DHT1_PIN, DHTTYPE);
DHT dht2(DHT2_PIN, DHTTYPE);
DHT dht3(DHT3_PIN, DHTTYPE);
/////////////////////////////////////////////////////////////////

#define MODE_BUTTON_PIN  A0
#define START_BUTTON_PIN  A1
#define STOP_BUTTON_PIN  A2
/////////////////////////////////////////////////////////////////

Button2 modeButton, startButton, stopButton;

/////////////////////////////////////////////////////////////////

LiquidCrystal_I2C lcd(0x27, 20, 4);

#define RELAY1_PIN 2
#define RELAY2_PIN 3
#define RELAY3_PIN 4
#define RELAY4_PIN 5
#define RELAY5_PIN 6
#define RELAY6_PIN 7
#define RELAY7_PIN 8
#define RELAY8_PIN 9
#define RELAY9_PIN 10
#define RELAY10_PIN 11
#define RELAY11_PIN 12
#define RELAY12_PIN 13
#define BUZZER_PIN 29
#define LED1R_PIN 41
#define LED2R_PIN 39
#define LED3R_PIN 37
#define LED1G_PIN 35
#define LED2G_PIN 33
#define LED3G_PIN 31


byte startedFlag1;
volatile unsigned long timer1, timer2;
byte displayMode;
void timerIsr() { // this are interrupt service //countdown timers
  //routine to turn provide a count down timer
  //this will decrement every 1 millisecond
  if (timer1)
    timer1-- ; // Only decrement if non-zero !!!!!!!!!!!!
  if (timer2)
    timer2-- ; // Analogy is that of an "egg-timer" which self resets!!!!!
}
void setup() {

  lcd.init();                      // initialize the lcd

  lcd.backlight();
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print(F("    EGG INCUBATOR"));

  delay(1000);

  lcd.clear();
  dht1.begin();
  dht2.begin();
  dht3.begin();
  Serial.begin(115200);

  rtc.begin();

  MsTimer2::set(1, timerIsr); // 1ms period
  MsTimer2::start();
  pinMode(RELAY1_PIN, OUTPUT);
  pinMode(RELAY2_PIN, OUTPUT);
  pinMode(RELAY3_PIN, OUTPUT);
  pinMode(RELAY4_PIN, OUTPUT);
  pinMode(RELAY5_PIN, OUTPUT);
  pinMode(RELAY6_PIN, OUTPUT);
  pinMode(RELAY7_PIN, OUTPUT);
  pinMode(RELAY8_PIN, OUTPUT);
  pinMode(RELAY9_PIN, OUTPUT);
  pinMode(RELAY10_PIN, OUTPUT);
  pinMode(RELAY11_PIN, OUTPUT);
  pinMode(RELAY12_PIN, OUTPUT);

  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(LED1R_PIN, OUTPUT);
  pinMode(LED2R_PIN, OUTPUT);
  pinMode(LED3R_PIN, OUTPUT);
  pinMode(LED1G_PIN, OUTPUT);
  pinMode(LED2G_PIN, OUTPUT);
  pinMode(LED3G_PIN, OUTPUT);

  modeButton.begin(MODE_BUTTON_PIN);
  modeButton.setClickHandler(click);
  startButton.begin(START_BUTTON_PIN);
  startButton.setClickHandler(click);
  stopButton.begin(STOP_BUTTON_PIN);
  stopButton.setClickHandler(click);



}




void loop() {
  modeButton.loop();
  startButton.loop();
  stopButton.loop();


  if (!timer1) {
    switch (displayMode) {
      case 0:
        //lcd.clear();
        timer1 = 1000;
        lcd.setCursor(0, 0);
        lcd.print(F("-----EGG TYPE 1-----"));
        lcd.setCursor(0, 1);
        lcd.print(F("TEMPERATURE: ")); lcd.print(dht1.readTemperature());
        lcd.print((char)223); lcd.print(F("C"));
        lcd.setCursor(0, 2);
        lcd.print(F("HUMIDITY: ")); lcd.print(dht1.readHumidity()); lcd.print(F("%"));
        lcd.setCursor(0, 3);
        if (startedFlag1) {
          lcd.print(F("TIME: "));
          TimeSpan deltaTime1 = rtc.now() - startTime1;
          lcd.print(deltaTime1.days()); lcd.print(F("Days"));
          lcd.setCursor(12, 3);
          byte hr = deltaTime1.hours();
          byte min = deltaTime1.minutes();
          byte sec = deltaTime1.seconds();
          if (hr < 10) {
            lcd.print(F("0"));
          }
          lcd.print(hr);
          lcd.print(F(":"));
          if (min < 10) {
            lcd.print(F("0"));
          }
          lcd.print(min);
          lcd.print(F(":"));
          if (sec < 10) {
            lcd.print(F("0"));
          }
          lcd.print(sec);
        }

        break;
      case 1:
        //lcd.clear();
        timer1 = 1000;
        lcd.setCursor(0, 0);
        lcd.print(F("-----EGG TYPE 2-----"));
        lcd.setCursor(0, 1);
        lcd.print(F("TEMPERATURE: ")); lcd.print(dht2.readTemperature());
        lcd.print((char)223); lcd.print(F("C"));
        lcd.setCursor(0, 2);
        lcd.print(F("HUMIDITY: ")); lcd.print(dht2.readHumidity()); lcd.print(F("%"));
        lcd.setCursor(0, 3);
        lcd.print(F("TIME: "));
        break;
      case 2:
        //lcd.clear();
        timer1 = 1000;
        lcd.setCursor(0, 0);
        lcd.print(F("-----EGG TYPE 3-----"));
        lcd.setCursor(0, 1);
        lcd.print(F("TEMPERATURE: ")); lcd.print(dht3.readTemperature());
        lcd.print((char)223); lcd.print(F("C"));
        lcd.setCursor(0, 2);
        lcd.print(F("HUMIDITY: ")); lcd.print(dht3.readHumidity()); lcd.print(F("%"));
        lcd.setCursor(0, 3);
        lcd.print(F("TIME: "));
        break;


    }

    // if (dht1.readHumidity()>55){

    // }
  }
}
void click(Button2 & btn) {
  if (btn == modeButton) {
lcd.clear();
    displayMode++;
    if (displayMode > 2) {
      displayMode = 0; //go back to 1st screenmode
    }

  } else if (btn == startButton) {
    if (!startedFlag1 && displayMode == 0) {
      startTime1 = rtc.now();

      timer1 = 2000;//long delay to give time disPLAYING notification
      //lcd.clear();
      lcd.setCursor(0, 1);
      lcd.print(F("    STARTING EGG      "));
      lcd.setCursor(0, 2);
      lcd.print(F("     INCUBATION     "));
      lcd.setCursor(0, 3);
      lcd.print(F("                   "));
      startedFlag1 = 1;

    }
  }
  else if (btn == stopButton) {
    timer1 = 2000;//long delay to give time disPLAYING notification
    lcd.clear();
    lcd.setCursor(0, 1);
    lcd.print(F("     STOPPING EGG      "));
    lcd.setCursor(0, 2);
    lcd.print(F("     INCUBATION     "));
    lcd.setCursor(0, 3);
    lcd.print(F("                   "));


    if (startedFlag1 && displayMode == 0) {
      startedFlag1 = 0;
    }
  }
}