#include <Wire.h>
#include <RTClib.h>
#include <LedControl.h>

RTC_DS1307 rtc;
LedControl lc(D2, D3, D4, 1);  // DIN, CLK, CS, numDevices

const int button1Pin = D9;
const int button2Pin = D10;
const int greenLedPin = D5;
const int redLedPin = D6;

// Custom characters (8x8 bitmaps)
byte A[8] = {
  B00111100,
  B01100110,
  B11000011,
  B11000011,
  B11111111,
  B11000011,
  B11000011,
  B11000011
};

byte B[8] = {
  B11111110,
  B11000011,
  B11000011,
  B11111110,
  B11000011,
  B11000011,
  B11000011,
  B11111110
};

byte C[8] = {
  B00111110,
  B01100011,
  B11000000,
  B11000000,
  B11000000,
  B11000000,
  B01100011,
  B00111110
};

void displayChar(byte letter[]) {
  for (int i = 0; i < 8; i++) {
    lc.setRow(0, i, letter[i]);
  }
}

void setup() {
  Wire.begin();
  lc.shutdown(0, false);
  lc.setIntensity(0, 8); // Brightness level (0–15)
  lc.clearDisplay(0);

  pinMode(button1Pin, INPUT_PULLUP);
  pinMode(button2Pin, INPUT_PULLUP);
  pinMode(greenLedPin, OUTPUT);
  pinMode(redLedPin, OUTPUT);

  Serial.begin(9600);
  if (!rtc.begin()) {
    Serial.println("RTC not found!");
    while (1);
  }

  if (!rtc.isrunning()) {
    Serial.println("RTC is not running, setting time...");
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__))); // Set time from computer clock
  }
}

void loop() {
  DateTime now = rtc.now();

  // Scheduled time: 12:00:00
  if (now.hour() == 12 && now.minute() == 0 && now.second() == 0) {
    displayChar(A);
    digitalWrite(greenLedPin, HIGH);
    delay(300);
    digitalWrite(greenLedPin, LOW);
  }

  // Button 1 pressed: Display 'B'
  if (digitalRead(button1Pin) == LOW) {
    displayChar(B);
    digitalWrite(redLedPin, HIGH);
    delay(300);
    digitalWrite(redLedPin, LOW);
  }

  // Button 2 pressed: Display 'C'
  if (digitalRead(button2Pin) == LOW) {
    displayChar(C);
  }

  delay(200);
}