// Include the library
#include <TM1637Display.h>
#include <WiFi.h>
#include "time.h"

// Define the connections pins
#define CLK 2
#define DIO 4

// Create a display object of type TM1637Display
TM1637Display display = TM1637Display(CLK, DIO);

// Create an array that turns all segments ON
const uint8_t allON[] = {0xff, 0xff, 0xff, 0xff};

// Create an array that sets individual segments per digit to display the word "dOnE"
const uint8_t done[] = {
  SEG_B | SEG_C | SEG_D | SEG_E | SEG_G,           // d
  SEG_A | SEG_B | SEG_C | SEG_D | SEG_E | SEG_F,   // O
  SEG_C | SEG_E | SEG_G,                           // n
  SEG_A | SEG_D | SEG_E | SEG_F | SEG_G            // E
};

// Create degree celsius symbol
const uint8_t celsius[] = {
  SEG_A | SEG_B | SEG_F | SEG_G,  // Degree symbol
  SEG_A | SEG_D | SEG_E | SEG_F   // C
};



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

const char* ntpServer = "pool.ntp.org";
const long  gmtOffset_sec = -21600; // Chicago GM -5:00 (apparently need more here -6)
const int   daylightOffset_sec = 3600;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);

  // Connect to Wi-Fi
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected.");
  
  // Init and get the time
  configTime(gmtOffset_sec, daylightOffset_sec, ntpServer);
  printLocalTime();

  //disconnect WiFi as it's no longer needed
  WiFi.disconnect(true);
  WiFi.mode(WIFI_OFF);
}



void printLocalTime(){
  struct tm timeinfo;
  if(!getLocalTime(&timeinfo)){
    Serial.println("Failed to obtain time");
    return;
  }
  Serial.println(&timeinfo, "%A, %B %d %Y %H:%M:%S");
  Serial.print("Day of week: ");
  Serial.println(&timeinfo, "%A");
  Serial.print("Month: ");
  Serial.println(&timeinfo, "%B");
  Serial.print("Day of Month: ");
  Serial.println(&timeinfo, "%d");
  Serial.print("Year: ");
  Serial.println(&timeinfo, "%Y");
  Serial.print("Hour: ");
  Serial.println(&timeinfo, "%H");
  Serial.print("Hour (12 hour format): ");
  Serial.println(&timeinfo, "%I");
  Serial.print("Minute: ");
  Serial.println(&timeinfo, "%M");
  Serial.print("Second: ");
  Serial.println(&timeinfo, "%S");

  Serial.println("Time variables");
  char timeHour[3];
  strftime(timeHour,3, "%H", &timeinfo);
  Serial.println(timeHour);
  char timeWeekDay[10];
  strftime(timeWeekDay,10, "%A", &timeinfo);
  Serial.println(timeWeekDay);
  Serial.println();
}

void loop() {
	// Set the brightness to 5 (0=dimmest 7=brightest)
	display.setBrightness(5);

	// Set all segments ON
	display.setSegments(allON);

  printLocalTime();
	delay(2000);
	display.clear();

	// Show counter 0-9
	int i;
	for (i = 0; i < 10; i++) {
		display.showNumberDec(i);
		delay(50);
	}

	delay(2000);
	display.clear();

  printLocalTime();
	display.showNumberDec(-12);			// Prints _-12
	delay(2000);
	display.clear();
	
	display.showNumberDec(-999);		// Prints -999
	delay(2000);
	display.clear();
	
	display.showNumberDec(31, false);	// Prints __31
	delay(2000);
	display.clear();
	
	display.showNumberDec(31, true);	// Prints 0031
	delay(2000);
	display.clear();
	
	display.showNumberDec(14, false, 2, 1);	// Prints _14_
	delay(2000);
	display.clear();
	
  printLocalTime();
	display.showNumberDec(-5, false, 3, 0);	// Prints _-5_
	delay(2000);
	display.clear();

	// Prints 12:34
	display.showNumberDecEx(1234, 0b11100000, false, 4, 0);

	delay(2000);
	display.clear();

	// Prints 15°C
	int temperature = 15;
	display.showNumberDec(temperature, false, 2, 0);
	display.setSegments(celsius, 2, 2);

  printLocalTime();
	delay(2000);
	display.clear();
	
	// Prints dOnE
	display.setSegments(done);
	display.clear();

  struct tm timeinfo;
  getLocalTime(&timeinfo);
  
  Serial.print("Minute (within loop): ");
  Serial.println(&timeinfo, "%M");

	while(1) {
    getLocalTime(&timeinfo);
    Serial.print("Minute (within loop AND while): ");
    Serial.println(&timeinfo, "%M");
    Serial.println(timeinfo.tm_min, DEC);
    display.showNumberDecEx(timeinfo.tm_hour,0b01000000,true,2,0);
    display.showNumberDecEx(timeinfo.tm_min,0b01000000,true,2,2);
    delay(1000);
  }
}