/*
    //Button
         Select/Save
         Up
         Down

    //rtc
       Run Motor Every SetHour for motorDelay

    //settings
     maxTemp
     minTemp
     maxHumid
     minHumid
     Humid on & off
     motor delay
     motor interval
     max Day

*/



#include "DHT.h"
#include <RTClib.h>
#include <Wire.h>
#include <EEPROM.h>
#include "SPI.h"
#include <LiquidCrystal_I2C.h>
#define DHTPIN 7
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321
#define BUTTON_PIN A0


DHT dht(DHTPIN, DHTTYPE);
RTC_DS1307 rtc;
LiquidCrystal_I2C lcd(0x27, 20, 4);

const int heater_relay = 5;
const int motor_relay = 6;
const int humidifier_relay = 4;


int maxHeat = 38; //remove value
int minHeat = 35;//remove value
int motor_setting;//remove value
int humid_setting = 60;//remove value
int humid_activate = 1; //remove value
//int lastButtonState;
//int eeprom_interval;
int disp = 1;//remove value

float minTemp = 37.5;
float maxTemp;
byte minHumid;
byte maxHumid;

byte motorTimer; //secs on to off state
byte motorInterval; //hours
byte maxDay;

char elapseTime[32];



//char eeprom_elapseTime[32]= EEPROM.read(7); //for computing days


char t[32];
char d[32];

//for simulation only delete after series to 1 pin all button
#define BUTTON_PIN1 A0
#define BUTTON_PIN2 A1
#define BUTTON_PIN3 A2
int lastButtonState1;
int lastButtonState2;
int lastButtonState3;
//////

int selSet; //if settings is selected

void setup() {
  Serial.begin(115200);

  dht.begin();

  lcd.init();
  lcd.backlight();
  Wire.begin();
  rtc.begin();

  //eeprom_interval = EEPROM.read(0);

  pinMode(motor_relay, OUTPUT);
  pinMode(heater_relay, OUTPUT);
  pinMode(humidifier_relay, OUTPUT);
  //pinMode(BUTTON_PIN, INPUT_PULLUP);  // enable the internal pull-up resistor

  //lastButtonState = analogRead(BUTTON_PIN);
  pinMode(3, OUTPUT);
  digitalWrite(3, HIGH);


  //delete after
  pinMode(BUTTON_PIN1, INPUT_PULLUP);  // enable the internal pull-up resistor
  lastButtonState1 = digitalRead(BUTTON_PIN1);
  pinMode(BUTTON_PIN2, INPUT_PULLUP);  // enable the internal pull-up resistor
  lastButtonState2 = digitalRead(BUTTON_PIN2);
  pinMode(BUTTON_PIN3, INPUT_PULLUP);  // enable the internal pull-up resistor
  lastButtonState3 = digitalRead(BUTTON_PIN3);
  //////////////////////////////


 minTemp = EEPROM.read(0);
 maxTemp = EEPROM.read(1);
minHumid = EEPROM.read(2);
 maxHumid = EEPROM.read(3);

motorTimer = EEPROM.read(4); //secs on to off state
motorInterval = EEPROM.read(5); //hours
maxDay = EEPROM.read(6);

}

void loop() {
  RTCmod();
  button();

  if (disp  == 1)
  {
    displayrtc();
  }
  else if (disp == 2)
  {
    temp_humid();
  }


}

void temp_humid()
{
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  // Check if any reads failed and exit early (to try again).
  if (isnan(temperature) || isnan(humidity)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }

  lcd.setCursor(0, 0);
  lcd.print(String("Heat:     ") + String(temperature, 1) + String((char)223) + String("C  "));
  lcd.setCursor(0, 1);
  lcd.print(String("Humidity: ") + String(humidity, 0) + String("%"));
  lcd.setCursor(0, 2);
  lcd.print("Day/s:");

  //temp relay
  if (maxHeat > temperature)
  {
    digitalWrite(heater_relay, HIGH); // Turn on
  }
  else if (maxHeat < temperature)
  {
    digitalWrite(heater_relay, LOW); // Turn off
  }

  // humidity relay

  if (humid_activate == 1)
  {
    if (humidity < humid_setting )
    {
      digitalWrite(humidifier_relay, HIGH); // Turn on
    }
    else
    {
      digitalWrite(humidifier_relay, LOW); // Turn off
    }
  }

}

void button() //not working
{
  int buttonState1 = digitalRead(BUTTON_PIN1);
  int buttonState2 = digitalRead(BUTTON_PIN2);
  int buttonState3 = digitalRead(BUTTON_PIN3);

  if (lastButtonState1 != buttonState1)
  { // state changed
    delay(50); // debounce time
  }

  if (lastButtonState2 != buttonState2)
  { // state changed
    delay(50); // debounce time
  }

  if (lastButtonState3 != buttonState3)
  { // state changed
    delay(50); // debounce time
  }





  if (buttonState1 == LOW) //select / save
  {

  }

  else if (buttonState2 == LOW && disp != 0) //up/add
  {
    delay(100);
    lcd.clear();
    disp = 2;
    Serial.print(disp);

  }

  else if (buttonState3 == LOW && disp != 0)//down/subtract
  {
    delay(100);
    lcd.clear();
    disp = 1;
    Serial.print(disp);

  }
  if (buttonState3 == LOW && buttonState2 == LOW )
  {
    selSet = 1;
    disp = 0;
    lcd.clear();
    lcd.setCursor(4, 0);
    lcd.print("HEAT SETTINGS");



    // delay(5000);
  }
  if (buttonState3 == LOW && disp == 0)
  {
    minTemp = minTemp + 0.1;
    lcd.setCursor(1, 2);
    lcd.print(String("MIN. TEMP:") + String(minTemp));
  }
  else if (buttonState2 == LOW && disp == 0)
  {
 minTemp = minTemp - 0.1;

    lcd.setCursor(1, 2);
    lcd.print(String("MIN. TEMP:   ") + String(minTemp));
  }

  if (buttonState1 == LOW)
  {
    settings();
  }


}

void RTCmod() // okay
{
  DateTime now = rtc.now();
  if (now.hour() > 12) {
    sprintf(t, "%02d:%02d:%02d", now.hour() - 12, now.minute(), now.second());
  }
  else
  {
    sprintf(t, "%02d:%02d:%02d", now.hour(), now.minute(), now.second());
  }

  sprintf(d, "%02d/%02d/%02d", now.day(), now.month(), now.year());
  //Serial.println(t);
  // Serial.println(d);
  // delay(1000);
}

void displayrtc() //done
{
  if (disp == 1)

    lcd.setCursor(0, 0);
  lcd.print("Automatic Incubator");
  lcd.setCursor(6, 2);
  lcd.print(t);
  lcd.setCursor(5, 3);
  lcd.print(d);


}

void settings()
{
  //  rtc.adjust(DateTime(year, month, date, hh, mm, ss)); //rtc set time
  save_eeprom();
}

void save_eeprom()
{
  Serial.println(minTemp);
  EEPROM.update(0,minTemp); //0 motor interval
}