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

// MAX7219 pins (DIN, CLK, CS)
#define DIN_PIN PB5
#define CLK_PIN PB3
#define CS_PIN PB4

// Pushbutton and LED pins
#define BUTTON_PIN PA0
#define LED_PIN PB1

LedControl lc = LedControl(DIN_PIN, CLK_PIN, CS_PIN, 1);  // One MAX7219 device
RTC_DS1307 rtc;

bool displayOn = true;
bool lastButtonState = HIGH;

void setup() {
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  pinMode(LED_PIN, OUTPUT);
  
  Serial.begin(115200);
  Wire.begin();

  // Initialize RTC
  if (!rtc.begin()) {
    Serial.println("Couldn't find RTC");
    while (1);
  }
  if (!rtc.isrunning()) {
    Serial.println("RTC is NOT running, setting time!");
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));  // Set time to compile time
  }

  // Initialize MAX7219
  lc.shutdown(0, false);
  lc.setIntensity(0, 8);
  lc.clearDisplay(0);
}

void displayPattern() {
  // Example pattern: diagonal line
  for (int i = 0; i < 8; i++) {
    lc.setRow(0, i, 1 << i);
  }
}

void clearDisplay() {
  lc.clearDisplay(0);
}

void loop() {
  // Read pushbutton, simple toggle logic
  bool buttonState = digitalRead(BUTTON_PIN);
  if (buttonState == LOW && lastButtonState == HIGH) {
    displayOn = !displayOn;  // Toggle display on/off
    delay(200);              // Debounce delay
  }
  lastButtonState = buttonState;

  DateTime now = rtc.now();

  // Example: Only show pattern between 8AM and 8PM
  if (displayOn && now.hour() >= 8 && now.hour() < 20) {
    displayPattern();
    digitalWrite(LED_PIN, HIGH);  // LED ON while display active
  } else {
    clearDisplay();
    digitalWrite(LED_PIN, LOW);
  }

  // Optional: print current time to Serial Monitor
  Serial.print("Time: ");
  Serial.print(now.hour());
  Serial.print(":");
  Serial.print(now.minute());
  Serial.print(":");
  Serial.println(now.second());

  delay(500);
}