#include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include <SPI.h>
#include <WiFi.h>
#include <NTPClient.h>
#include <WiFiUdp.h>

// Define your Wi-Fi credentials
const char *ssid = "Wokwi-GUEST";
const char *password = "";

// Define the pins for MAX7219
#define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW
#define MAX7219_DATA_PIN 23   // D23 on ESP32
#define MAX7219_CLK_PIN 18    // D18 on ESP32
#define MAX7219_CS_PIN 5      // D5 on ESP32

// Create an instance of MD_Parola for controlling the MAX7219 display
MD_Parola myDisplay = MD_Parola(HARDWARE_TYPE,MAX7219_DATA_PIN, MAX7219_CLK_PIN, MAX7219_CS_PIN, 8);
// Define NTP settings
const char *ntpServer = "pool.ntp.org";
const int utcOffsetInSeconds = 0;  // Your UTC offset in seconds

WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, ntpServer, utcOffsetInSeconds);

void setup() {
  // Initialize Serial
  Serial.begin(115200);
  myDisplay.begin();
  // Display loading message
  myDisplay.displayText("Loading....", PA_LEFT,50,2000, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
  
  // Connect to Wi-Fi
  connectToWiFi();

  // Initialize timeClient
  timeClient.begin();

  // Display current time
  displayTime();

  // Pause for a moment
  delay(3000);

  // Display day
  displayDay();

  // Pause for a moment
  delay(3000);

  // Display date
  displayDate();
}

void loop() {
  // Update the time from NTP server
  timeClient.update();

  // Your main code can go here
}

void connectToWiFi() {
  Serial.println("Connecting to WiFi...");

  // Connect to Wi-Fi
  WiFi.begin(ssid, password);

  // Wait until connected
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }

  Serial.println("Connected to WiFi");
}

void displayTime() {
  // Get the current time
  unsigned long epochTime = timeClient.getEpochTime();
  struct tm *timeinfo;
  timeinfo = gmtime((const time_t *)&epochTime);

  // Format time as HH:MM
  char timeStr[6];
  strftime(timeStr, sizeof(timeStr), "%H:%M", timeinfo);

  // Display time
  myDisplay.displayText(timeStr, PA_LEFT,50,2000, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
}

void displayDay() {
  // Get the current time
  unsigned long epochTime = timeClient.getEpochTime();
  struct tm *timeinfo;
  timeinfo = gmtime((const time_t *)&epochTime);

  // Format day
  char dayStr[10];
  strftime(dayStr, sizeof(dayStr), "%A", timeinfo);

  // Display day
  myDisplay.displayText(dayStr, PA_LEFT,50,2000, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
}

void displayDate() {
  // Get the current time
  unsigned long epochTime = timeClient.getEpochTime();
  struct tm *timeinfo;
  timeinfo = gmtime((const time_t *)&epochTime);

  // Format date as DD/MM/YYYY
  char dateStr[11];
  strftime(dateStr, sizeof(dateStr), "%d/%m/%Y", timeinfo);

  // Display date
  myDisplay.displayText(dateStr, PA_LEFT,50,2000, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
}