#include <WiFi.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>

#include "time.h"

#include "SPI.h"
#include "Adafruit_GFX.h"
#include "Adafruit_ILI9341.h"

#define TFT_DC 2
#define TFT_CS 15

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);

String URL = "http://api.openweathermap.org/data/2.5/weather?";
String ApiKey = "6c68e32516db69e49b9df906131ee2bf";
String lat = "20.36064679936554";
String lon = "106.14353154454663";

struct tm timeinfo;
const char* ntpServer = "pool.ntp.org";
const long  gmtOffset_sec = 25200;
const int   daylightOffset_sec = 25200;//GMT+7

void setup() {
  tft.begin();
  tft.fillScreen(ILI9341_WHITE);

  //connecting to a WiFi network
  Serial.begin(9600);
  Serial.print("Connecting to WiFi");
  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");

  // Init and get the time
  configTime(gmtOffset_sec, daylightOffset_sec, ntpServer);
  printLocalTime();

  tft.begin();
  tft.fillScreen(ILI9341_WHITE);
}

void loop() { 
  printLocalTemphumi();
  printLocalTime();
   
}

void printLocalTemphumi(){

  // wait for WiFi connection
  if (WiFi.status() == WL_CONNECTED) {

    HTTPClient http;

    //Set HTTP Request Final URL with Location and API key information
    http.begin(URL + "lat=" + lat + "&lon=" + lon + "&units=metric&appid=" + ApiKey);

    // start connection and send HTTP Request
    int httpCode = http.GET();

    // httpCode will be negative on error
    if (httpCode > 0) {

      //Read Data as a JSON string
      String JSON_Data = http.getString();
      Serial.println(JSON_Data);

      //Retrieve some information about the weather from the JSON format
      DynamicJsonDocument doc(2048);
      deserializeJson(doc, JSON_Data);
      JsonObject obj = doc.as<JsonObject>();

      //Display the Current Weather Info
      const char* description = obj["weather"][0]["description"].as<const char*>();
      const float temp = obj["main"]["temp"].as<float>();
      const float humidity = obj["main"]["humidity"].as<float>();
     
      tft.setCursor(80, 150);
      tft.setTextColor(ILI9341_BLACK);
      tft.setTextSize(3);
      tft.println(temp);
      tft.setCursor(160, 150);
      tft.setTextColor(ILI9341_BLACK);
      tft.setTextSize(3);
      tft.println(" C");

      tft.setCursor(80, 200);
      tft.setTextColor(ILI9341_BLUE);
      tft.setTextSize(3);
      tft.println(humidity);
      tft.setCursor(160, 200);
      tft.setTextColor(ILI9341_BLUE);
      tft.setTextSize(3);
      tft.println(" %");

    }
    http.end();
  }
  delay(10000);
}

void printLocalTime(){

  if(!getLocalTime(&timeinfo)){
    return;
  }
  tft.setCursor(80, 90);
  tft.setTextColor(ILI9341_BLACK);
  tft.setTextSize(3);
  tft.println(&timeinfo, "%H:%M");

  tft.setCursor(40, 50);
  tft.setTextColor(ILI9341_BLACK);
  tft.setTextSize(3);
  tft.println(&timeinfo, "%d/%m/%Y");

  tft.setCursor(10, 10);
  tft.setTextColor(ILI9341_BLACK);
  tft.setTextSize(3);
  tft.println(&timeinfo, "%A");

}