#include "Arduino.h"
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <HTTPClient.h>
#include <WiFi.h>
#include <NTPClient.h>

const char* ntpServer = "pool.ntp.org";
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, ntpServer);

//Digital I/O used  //Makerfabs Audio V2.0
#define I2S_DOUT 27
#define I2S_BCLK 26
#define I2S_LRC 25

//SSD1306
#define MAKEPYTHON_ESP32_SDA 4
#define MAKEPYTHON_ESP32_SCL 5
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
#define OLED_RESET -1    // Reset pin # (or -1 if sharing Arduino reset pin)

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

const char *ssid = "Wokwi-GUEST";
const char *password = "";

int runtime = 0;
int length = 0;

bool isPaused = false;

unsigned long previousMillis = 0;
unsigned long interval = 30000;

int ledState = LOW;

void lcd_text(String text, int textSize, int text_position, String text2="")
{
  display.setTextSize(textSize);              // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE); // Draw white text
  display.setCursor(0, text_position);             // Start at top-left corner
  display.clearDisplay();
  display.println(text);
  if (text2)
    display.setTextSize(1);              // Normal 1:1 pixel scale
    display.println(text2);
  display.display();
}

void setup()
{
  Serial.begin(115200);

  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }
  delay(2000);

  // Initialize the NTP client
  timeClient.begin();
  timeClient.setTimeOffset(0); // Adjust the time offset if necessar

  timeClient.update();

    // Get the current date and time
  // Get the current date and time components
  int day = timeClient.getDay();
  int hour = timeClient.getHours();
  int minute = timeClient.getMinutes();
  int second = timeClient.getSeconds();

    // Display the date and time
  Serial.println(day);

  Serial.print("Time: ");
  Serial.print(hour);
  Serial.print(":");
  Serial.print(minute);
  Serial.print(":");
  Serial.println(second);

  display.clearDisplay();
  display.setTextSize(2);              // Normal 1:1 pixel scale
  display.setRotation(1);
  display.setTextColor(SSD1306_WHITE); // Draw white text
}

String getLocalTime(){
  struct tm timeinfo;
  while(!getLocalTime(&timeinfo)){
    Serial.println("Failed to obtain time");
  }
  char timeHour[3];
  char timeMinute[3];
  strftime(timeHour,3, "%H", &timeinfo);
  strftime(timeMinute,3, "%M", &timeinfo);
  return String(timeHour) + ":" + String(timeMinute) + ":";
  Serial.println(timeHour);
}

void loop()
{
  
  unsigned long currentMillis = millis();
  Serial.println(currentMillis);
  
  if ( currentMillis - previousMillis >= 1500){
      previousMillis = currentMillis;
    
    if (ledState == LOW) {
      ledState = HIGH;
    } else {
      ledState = LOW;
    }
    
    if (ledState == HIGH)
    {
      lcd_text("A", 1, 0);
    }
    else if (ledState == LOW)
    {
      lcd_text("B", 1, 0);
    }
  }
}