#include <GyverTM1637.h>
#include <RTClib.h>
#include <LiquidCrystal_I2C.h>

const int trig = 13;
const int echo = 12;
#define OX 34
#define RELAY1 14
#define RELAYOX 25
#define RELAYFeed 15
#define LED_R1 26
#define LED_R2 27
#define LED_OX1 16
#define LED_OX2 17
#define CLK 18
#define DIO 19
#define Bz 32

GyverTM1637 disp(CLK,DIO);
RTC_DS1307 rtc;
LiquidCrystal_I2C lcd(0x27, 20, 4);

void setup() {
Serial.begin(115200);
pinMode(trig, OUTPUT);
pinMode(echo, INPUT);
pinMode(LED_R1, OUTPUT);
pinMode(LED_R2, OUTPUT);
pinMode(LED_OX1, OUTPUT);
pinMode(LED_OX2, OUTPUT);

disp.clear();
disp.brightness(7);
disp.point(1);
rtc.begin();

lcd.init();
lcd.backlight();
lcd.setCursor(0,0);
lcd.print("Distance : ");
lcd.setCursor(0,1);
lcd.print("Oxygen :");
lcd.setCursor(0,2);
lcd.print ("Relay : ");
lcd.setCursor(0,3);
lcd.print ("Feed : ");
delay(4000);
}

void loop() {
  water_level();
  Serial.println("");
  OXYGEN();
  Serial.println("");
  dispTime();
  dispSec();
  Timenow();
  delay(5000);
}

void water_level(){  //ฟังก์ชันตรวจระดับน้ำ
  long duration, distance;

  digitalWrite(trig, LOW);
  delayMicroseconds(2);
  digitalWrite(trig, HIGH);
  delayMicroseconds(10);
  digitalWrite(trig, LOW);

  duration = pulseIn(echo, HIGH);
  distance = duration * 0.034 / 2;

  Serial.print("Distance: ");
  Serial.print(distance);
  Serial.println(" cm");
  lcd.setCursor(12,0);
  lcd.print("   ");
  lcd.setCursor(12,0);
  lcd.print(distance);
  lcd.setCursor(15,0);
  lcd.print(" CM");

  if (distance > 20) { 
    digitalWrite(RELAY1, HIGH); 
    Serial.println("Relaywater ON");
    digitalWrite(LED_R2, HIGH); 
    digitalWrite(LED_R1, LOW);
    lcd.setCursor(9,2); 
    lcd.print ("Dis");
    tone(Bz, 1000 ); 
  }
    else {
    digitalWrite(RELAY1, LOW);
    Serial.println("Relaywater OFF");
    digitalWrite(LED_R1, HIGH); 
    digitalWrite(LED_R2, LOW); 
    lcd.setCursor(9,2); 
    lcd.print ("   ");
    noTone(Bz); 
  }
  delay(1000);
}

void OXYGEN(){ //ฟังก์ชันตรวจ Oxygenในน้ำ
  int potValue = analogRead(OX);
  float oxygenLevel = map(potValue, 0, 4095, 0, 15);

  Serial.print("Oxygen Level: ");
  Serial.print(oxygenLevel);
  Serial.println(" mg/L");
  lcd.setCursor(9,1);
  lcd.print("   ");
  lcd.setCursor(9,1);
  lcd.print(oxygenLevel);
  lcd.setCursor(13,1);
  lcd.print("mg/L");

  if (oxygenLevel < 7) { 
    digitalWrite(RELAYOX, HIGH); 
    Serial.println("Relayoxygen ON");
    lcd.setCursor(13,2); 
    lcd.print ("OX");
    digitalWrite(LED_OX2, HIGH); 
    digitalWrite(LED_OX1, LOW); 
    tone(Bz, 1000 );  
  }
    else {
    digitalWrite(RELAYOX, LOW);
    Serial.println("Relayoxygen OFF");
    lcd.setCursor(13,2); 
    lcd.print ("  ");
    digitalWrite(LED_OX1, HIGH); 
    digitalWrite(LED_OX2, LOW); 
    noTone(Bz); 
  }
}

void dispSec(void){ //จุดทศนิยมบนจอบอกเวลา
  disp.point(1);
  delay(1000);
  disp.point(0);
  delay(1000);
}

void dispTime (void){ //ดึงเวลา ชั่วโมง เเละ นาที เเสดงบนจอ
  DateTime now=rtc.now();
  byte hrs=now.hour();
  byte mins=now.minute();

  disp.displayClock(hrs,mins);
}

void Timenow(){ //ฟังก์ชันให้อาหารตามเวลา
  DateTime now = rtc.now(); // รับเวลาปัจจุบันจาก RTC

  int currentMinute = (now.hour() * 60) + now.minute(); // คำนวณเวลาปัจจุบันเป็นนาที
  // กำหนดเวลาที่ต้องการให้อาหารปลา
  const int feedTimeMorning = 11 * 60 + 53; // 8:00 น.
  const int feedTimeEvening = 18 * 60; // 18:00 น.
  // ตรวจสอบเวลาให้อาหารปลา
  if (currentMinute == feedTimeMorning || currentMinute == feedTimeEvening) {
    Serial.println("กำลังให้อาหารปลา");
    digitalWrite(RELAYFeed, HIGH); 
    lcd.setCursor(16,2); 
    lcd.print ("Feed");
    lcd.setCursor(16,2); 
    lcd.print ("    ");
    Serial.println("RelayFeed ON");
    lcd.setCursor(8,3); 
    lcd.print ("Feeding");
    tone(Bz, 1000 ); 

    delay(5000); 
    Serial.println("หยุดให้อาหารปลา");
    digitalWrite(RELAYFeed, LOW);
    Serial.println("RelayFeed OFF");
    noTone(Bz);
    lcd.setCursor(8,3);
    lcd.print("            ");
    delay(60000);
  }
  delay(1000); 
}