#include <Wire.h>
#include <BH1750.h>
#include <RTClib.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define LIGHT_SENSOR_ADDR 0x23
#define OLED_RESET 4
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_ADDR 0x3C

BH1750 lightMeter(LIGHT_SENSOR_ADDR);
RTC_DS1307 rtc;
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

#define RELAY1_PIN 2
#define RELAY2_PIN 3
#define BUTTON_PIN_D5 5
#define BUTTON_PIN_D6 6
#define BUTTON_PIN_D7 7

bool buttonPressed_D5 = false;
int lastButtonState_D6 = HIGH;
int lastButtonState_D7 = HIGH;

void setup() {
  pinMode(RELAY1_PIN, OUTPUT);
  pinMode(RELAY2_PIN, OUTPUT);
  pinMode(BUTTON_PIN_D5, INPUT_PULLUP);
  pinMode(BUTTON_PIN_D6, INPUT_PULLUP);
  pinMode(BUTTON_PIN_D7, INPUT_PULLUP);

  Wire.begin();
  rtc.begin();
  if (!rtc.isrunning()) {
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }

  lightMeter.begin(BH1750::CONTINUOUS_HIGH_RES_MODE);
  display.begin(SSD1306_SWITCHCAPVCC, OLED_ADDR);
  display.display();
  delay(2000);
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SSD1306_WHITE);
}

void loop() {
  DateTime now = rtc.now();
  
  float lux = lightMeter.readLightLevel();

  if (lux < 400) {
    digitalWrite(RELAY1_PIN, HIGH);
    digitalWrite(RELAY2_PIN, LOW);
  } else {
    digitalWrite(RELAY1_PIN, LOW);
    digitalWrite(RELAY2_PIN, HIGH);
  }

  display.clearDisplay();
  display.setCursor(0, 0);
  display.print(now.hour());
  display.print(":");
  display.print(now.minute());
  display.print(":");
  display.print(now.second());
  display.print(" - ");
  display.print(now.day());
  display.print("/");
  display.print(now.month());
  display.print("/");
  display.print(now.year());
  display.setCursor(0, 20);
  display.print("Light: ");
  display.print(lux);
  display.display();

  if (digitalRead(BUTTON_PIN_D5) == LOW && !buttonPressed_D5) {
    buttonPressed_D5 = true;
    display.clearDisplay();
    display.setCursor(0, 0);
    display.print("Time: ");
    display.print(now.hour());
    display.print(":");
    display.print(now.minute());
    display.print(":");
    display.print(now.second());
    display.print(" - ");
    display.print(now.day());
    display.print("/");
    display.print(now.month());
    display.print("/");
    display.print(now.year());
    display.display();
    delay(500);
  } else if (digitalRead(BUTTON_PIN_D5) == HIGH) {
    buttonPressed_D5 = false;
  }

  int buttonState_D6 = digitalRead(BUTTON_PIN_D6);
  if (buttonState_D6 != lastButtonState_D6) {
    if (buttonState_D6 == LOW) {
      adjustHour(1); // افزایش یک واحد ساعت
    }
    lastButtonState_D6 = buttonState_D6;
  }

  int buttonState_D7 = digitalRead(BUTTON_PIN_D7);
  if (buttonState_D7 != lastButtonState_D7) {
    if (buttonState_D7 == LOW) {
      adjustMinute(1); // افزایش یک واحد دقیقه
    }
    lastButtonState_D7 = buttonState_D7;
  }
}

void adjustHour(int adjust) {
  DateTime now = rtc.now();
  int hour = now.hour();
  int minute = now.minute();
  int second = now.second();

  hour = (hour + adjust) % 24;
  if (hour < 0) {
    hour += 24;
  }

  rtc.adjust(DateTime(now.year(), now.month(), now.day(), hour, minute, second));
}

void adjustMinute(int adjust) {
  DateTime now = rtc.now();
  int hour = now.hour();
  int minute = now.minute();
  int second = now.second();

  minute = (minute + adjust) % 60;
  if (minute < 0) {
    minute += 60;
  }

  rtc.adjust(DateTime(now.year(), now.month(), now.day(), hour, minute, second));
}