#include <LiquidCrystal.h>

// تعریف پین های اتصال LCD به Arduino
LiquidCrystal lcd(7, 8, 9, 10, 11, 12);
//______________For_Timer_Variable____________
unsigned long lastMillis;
int minutes = 480;
int State = 0;
long Timestamp_Button_Pressed;
unsigned long Countdown_start;
int time_end_state = 0;
String current_time;
//_____________End_For_Timer_Variable____________

int LDR_1 = A1; // potentiometer wiper (middle terminal) connected to analog pin 3
int LDR_temp_1 = 0;  // variable to store the value read

int LDR_2 = A2; // potentiometer wiper (middle terminal) connected to analog pin 3
int LDR_temp_2 = 0;  // variable to store the value read

const float Rref = 10000;
const float RL10 = 50;
const float GAMMA = 0.7;

double Lux (int RawADC0) {
float Vout = RawADC0 / 1023.*5;
float R = Rref*(1/((5/Vout)-1));
float lux = pow(RL10*1e3*pow(10,GAMMA)/R, (1/GAMMA));
return lux;
}

byte Shine[8] = {
  B00000,
  B00100,
  B10101,
  B01110,
  B11011,
  B01110,
  B10101,
  B00100,
};

byte sunChar1[8] = {
  B00000,  B00101, B01010,  B10100, B01011, B10111,  B01111,  B01111,
};

byte sunChar2[8] = {
  B00000,  B10100,  B01010,  B00101,  B11010,  B11101,  B11110,  B11110,
};

byte sunChar3[8] = {
  B01111,  B10111,  B10111,  B01011,  B10100,  B01010,  B00101,  B00000,
};

byte sunChar4[8] = {
  B11110,  B11110,  B11101,  B11010,  B00101,  B01010,  B10100,  B00000,
};



byte MoonChar1[] = {
  B00000,  B00000,  B00010,  B00100,  B01100,  B01100,  B11110,  B11111,
};
byte MoonChar2[] = {
  B00000,  B00000,  B00000,  B00000,  B00000,  B00000,  B00001,  B00011,
};
byte MoonChar3[] = {
  B01111,  B01111,  B00011,  B00000,  B00000,  B00000,  B00000,  B00000,
};

byte MoonChar4[] = {
  B11110,  B11100,  B11000,  B00000,  B00000,  B00000,  B00000,  B00000,
};

void setup() {
  lcd.begin(16, 2);  // آغاز به کار LCD با اندازه 16x2
  Serial.begin(9600);
  lcd.createChar(0, MoonChar1);  
  lcd.createChar(1, MoonChar2);   
  lcd.createChar(2, MoonChar3);   
  lcd.createChar(3, MoonChar4);  
  lcd.createChar(4, sunChar1);  // تعریف آیکون خورشید 1
  lcd.createChar(5, sunChar2);  // تعریف آیکون خورشید 2
  lcd.createChar(6, sunChar3);  // تعریف آیکون خورشید 3
  lcd.createChar(7, sunChar4);  // تعریف آیکون خورشید 4
 
 //______________For_Timer_____________
  Timestamp_Button_Pressed = millis();
  lastMillis = millis();
  //______________End_For_Timer_________

}

void loop() {
  LDR_temp_1 = analogRead(LDR_1);  // read the input pin
  Serial.println(LDR_temp_1);  

  LDR_temp_2 = analogRead(LDR_2);  // read the input pin
  Serial.println(LDR_temp_2); 

  if (LDR_temp_1 > 1000) {
    Moon();
  } else {
    Sun();
  }

  lcd.setCursor(3, 0);
  lcd.print(Lux(LDR_temp_2));
  lcd.print(" Lux    ");  
  lcd.setCursor(14, 0);
  
 // lcd.write(byte(8));
 //______________For_Timer_____________
  if (minutes * 60000 > (millis() - Countdown_start))
  {
    current_time = TimeLeft((minutes * 60000 - (millis() - Countdown_start)));
    Serial.println(current_time);
    printTime(current_time);
    time_end_state = 1;
  } else {
    time_end_state = 0;
  }
  if (time_end_state == 0) {
    digitalWrite(13, HIGH);
    delay(2000);
    digitalWrite(13, LOW);
    call_timer();
  }
  //______________For_Timer_____________
  Serial.println("EndLoop");
 


}

void Moon() {
  lcd.setCursor(0, 0);    
  lcd.write(byte(0));    
  lcd.write(byte(1));     
  lcd.setCursor(0, 1);
  lcd.write(byte(2));     
  lcd.write(byte(3));     
}

void Sun() {
  lcd.setCursor(0, 0);  
  lcd.write(byte(4));  
  lcd.write(byte(5));
  lcd.setCursor(0, 1);
  lcd.write(byte(6)); 
  lcd.write(byte(7)); 
}

void printTime(String Time) {
  lcd.setCursor(3, 1);
  lcd.print(Time);
  lcd.print(" S");
}

void call_timer() {
  if (time_end_state == 0) {
    if (millis() - Timestamp_Button_Pressed > 200) {
      if (State == 0) {
        Countdown_start = millis();
      }
    }
  }
}

String TimeLeft(unsigned long MsLeft) {
  String Result;
  int M;
  int S;
  M = (long)MsLeft / 60000;
  if (M < 10) Result = (String)"0" + M + ":"; else Result = (String)M + ":";
  S = (long)((MsLeft - M * 60000) / 1000);
  if (S < 10) Result = (String)Result + "0" + S ; else Result = (String)Result + S;
  return Result;
}
//______________For_Timer_Function_____________