#include <ArduinoJson.h>
#include <WiFi.h>
#include <HTTPClient.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include "DHTesp.h"

LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 20, 4);

#define NTP_SERVER     "pk.pool.ntp.org"
#define UTC_OFFSET     18000
#define UTC_OFFSET_DST 0

// set location and API key
String Location = "Karachi, PK";
String API_Key = "f35a205df5b5b99f9ca991ab6b890e3b";

const int DHT_PIN = 15;
DHTesp dhtSensor;
String today_Date;  //dd-mm-yyyy

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

  dhtSensor.setup(DHT_PIN, DHTesp::DHT22); // Configure DHT22 Sensor

  LCD.init();   // Initialize Liquid Crystal Display
  LCD.backlight(); // Backlight On
  LCD.setCursor(0, 0); // Cursor Position Row 0 X Column 0
  LCD.print("Connecting to ");  // Display Text on LCD
  LCD.setCursor(0, 1); // Cursor Position Row 0 X Column 1
  LCD.print("WiFi "); // Display Text on LCD

  WiFi.begin("Wokwi-GUEST", "", 6); // Connecting WIFI with cridintials
  while (WiFi.status() != WL_CONNECTED) {
    delay(250);
    spinner();
  }

  Serial.print("");
  Serial.print("WiFi connected");
  Serial.print("IP address: ");
  Serial.print(WiFi.localIP());

  LCD.clear();  // Remove All text from Liquid Crystal Display
  LCD.setCursor(0, 0);
  LCD.print("Online");
  LCD.setCursor(0, 1);
  LCD.print("Updating time...");

  configTime(UTC_OFFSET, UTC_OFFSET_DST, NTP_SERVER);
}

void loop() {
  printLocalTime(); // Fatch Date Time from Internet
  weather_Updates();  // Fatch weather Updates from Internet
  //GtoHConvertor(today_Date);  // Convert Gregorian to Hijri Dates
  delay(2000);
  //LCD.setCursor(0, 3);
  //LCD.print("                    ");
}



void spinner() {
  static int8_t counter = 0;
  const char* glyphs = "\xa1\xa5\xdb";
  LCD.setCursor(15, 1);
  LCD.print(glyphs[counter++]);
  if (counter == strlen(glyphs)) {
    counter = 0;
  }
}

void printLocalTime() {
  struct tm timeinfo;
  if (!getLocalTime(&timeinfo)) {
    LCD.setCursor(0, 1);
    LCD.print("Connection Err");
    return;
  }

  LCD.setCursor(0, 0);
  LCD.print("PK-KHI. ");

  LCD.setCursor(9, 0);
  
  //DateTime now = &timeinfo;
  String dy, mn;
if (timeinfo.tm_mday<10){dy="0"+String(timeinfo.tm_mday);} else {dy=String(timeinfo.tm_mday);}  
if (timeinfo.tm_mon<10){mn="0"+String(timeinfo.tm_mon+1);} else {mn=String(timeinfo.tm_mon+1);}  
  Serial.println(dy+ "-" +  mn +  "-" + String(timeinfo.tm_year + 1900));
  today_Date = (dy+ "-" +  mn +  "-" + String(timeinfo.tm_year + 1900));
  if((timeinfo.tm_hour >= 0) && (timeinfo.tm_hour <12))
  {  LCD.print(&timeinfo, "%I:%M:%S AM" );}
  else
   {  LCD.print(&timeinfo, "%I:%M:%S PM" );}


  LCD.setCursor(0, 1);
  LCD.print(&timeinfo, "%a      %b-%d,%Y");

  //LCD.setCursor(0, 2);
  //LCD.print(char(0xDF));
  //LCD.print("C");
  
  //LCD.setCursor(0, 3);
  //LCD.print("Humidity");
}



void DHTSensor(){
    TempAndHumidity  data = dhtSensor.getTempAndHumidity();
      LCD.setCursor(0, 2);
      //LCD.print("Temp:    " + String(data.temperature, 2));
      LCD.print("T: " + String(data.temperature, 1));
      LCD.print(char(0xDF));
      LCD.print("C");
  
      LCD.setCursor(0, 3);
      LCD.print("Humidity "+ String(data.humidity, 1) + "%");

  Serial.println("Temp:    " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity:  " + String(data.humidity, 1) + "%");
  Serial.println("---");
  delay(1000);
}

void GtoHConvertor(String gDate) //  DD-MM-YYYY
{


  String url = "http://api.aladhan.com/v1/gToH?date=" + gDate;
   HTTPClient http;
  http.begin(url);
  int httpCode = http.GET();
  
  // Check for errors
  if (httpCode != 200) {
    Serial.println("Error: " + String(httpCode));
    return;
  }
  
  // Parse the JSON response
  String response = http.getString();
 
  StaticJsonDocument<1024> doc;

DeserializationError error = deserializeJson(doc, response);

if (error) {
  Serial.print("deserializeJson() failed: ");
  Serial.println(error.c_str());
  return;
}

int code = doc["code"]; // 200
const char* status = doc["status"]; // "OK"

JsonObject data_hijri = doc["data"]["hijri"];
const char* data_hijri_date = data_hijri["date"]; // "14-02-1436"
const char* data_hijri_format = data_hijri["format"]; // "DD-MM-YYYY"
const char* data_hijri_day = data_hijri["day"]; // "14"

const char* data_hijri_weekday_en = data_hijri["weekday"]["en"]; // "Al Ahad"
const char* data_hijri_weekday_ar = data_hijri["weekday"]["ar"]; // "الاحد"

JsonObject data_hijri_month = data_hijri["month"];
int data_hijri_month_number = data_hijri_month["number"]; // 2
const char* data_hijri_month_en = data_hijri_month["en"]; // "Ṣafar"
const char* data_hijri_month_ar = data_hijri_month["ar"]; // "صَفَر"

const char* data_hijri_year = data_hijri["year"]; // "1436"

const char* data_hijri_designation_abbreviated = data_hijri["designation"]["abbreviated"]; // "AH"
const char* data_hijri_designation_expanded = data_hijri["designation"]["expanded"]; // "Anno Hegirae"

JsonObject data_gregorian = doc["data"]["gregorian"];
const char* data_gregorian_date = data_gregorian["date"]; // "07-12-2014"
const char* data_gregorian_format = data_gregorian["format"]; // "DD-MM-YYYY"
const char* data_gregorian_day = data_gregorian["day"]; // "07"

const char* data_gregorian_weekday_en = data_gregorian["weekday"]["en"]; // "Sunday"

int data_gregorian_month_number = data_gregorian["month"]["number"]; // 12
const char* data_gregorian_month_en = data_gregorian["month"]["en"]; // "December"

const char* data_gregorian_year = data_gregorian["year"]; // "2014"

const char* data_gregorian_designation_abbreviated = data_gregorian["designation"]["abbreviated"];
const char* data_gregorian_designation_expanded = data_gregorian["designation"]["expanded"]; // "Anno ...
   //Serial.println(String(data_hijri_date) + " " + String(data_hijri_designation_abbreviated));
   
  
   String sht_En_Month;

   switch (data_hijri_month_number) {

    case 1:
      sht_En_Month = "MHRM";
      break;

    case 2:
      sht_En_Month = "SAFR";
      break;

    case 3:
      sht_En_Month="R-I";
      break;

    case 4:
      sht_En_Month = "R-II";
      break;

    case 5:
      sht_En_Month = "J-I";
      break;

    case 6:
      sht_En_Month="J-II";
      break;

    case 7:
      sht_En_Month = "RAJB";
      break;

    case 8:
      sht_En_Month = "SHBN";
      break;

    case 9:
      sht_En_Month="RMZN";
      break;

    case 10:
      sht_En_Month = "SHWL";
      break;

    case 11:
      sht_En_Month = "ZEQD";
      break;

    case 12:
      sht_En_Month="ZLHJ";
      break;
    default:
      Serial.print("Sensor error");
  }
    LCD.setCursor(8, 1);
    LCD.print(String(data_hijri_day) + " " + String(sht_En_Month)+ " " + String(data_hijri_year) );
   //Serial.println(String(data_hijri_day) + " " + String(sht_En_Month)+ " " + String(data_hijri_year) + " " + String(data_hijri_designation_abbreviated));
   //Serial.println(String(data_hijri_day) + ", " + String(data_hijri_month_ar) + " " + String(data_hijri_year));

   delay(10000);
}

void weather_Updates()
{
if (WiFi.status() == WL_CONNECTED) //Check WiFi connection status
{
HTTPClient http; //Declare an object of class HTTPClient

// specify request destination
http.begin("http://api.openweathermap.org/data/2.5/weather?q=" + Location + "&APPID=" + API_Key +"&units=metric"); // !!

int httpCode = http.GET(); // send the request

if (httpCode > 0) // check the returning code
{
String payload = http.getString(); //Get the request response payload

DynamicJsonDocument doc(2048);

// Parse JSON object
DeserializationError error = deserializeJson(doc,payload);

if (error) {
  Serial.print("deserializeJson() failed: ");
  Serial.println(error.c_str());
  return;
}

float coord_lon = doc["coord"]["lon"]; // 67.0822
float coord_lat = doc["coord"]["lat"]; // 24.9056

JsonObject weather_0 = doc["weather"][0];
int weather_0_id = weather_0["id"]; // 800
const char* weather_0_main = weather_0["main"]; // "Clear"
const char* weather_0_description = weather_0["description"]; // "clear sky"
const char* weather_0_icon = weather_0["icon"]; // "01d"

const char* base = doc["base"]; // "stations"

JsonObject main = doc["main"];
float main_temp = main["temp"]; // 296.05
float main_feels_like = main["feels_like"]; // 294.92
float main_temp_min = main["temp_min"]; // 296.05
float main_temp_max = main["temp_max"]; // 296.05
int main_pressure = main["pressure"]; // 1016
int main_humidity = main["humidity"]; // 20

int visibility = doc["visibility"]; // 6000

float wind_speed = doc["wind"]["speed"]; // 2.06
int wind_deg = doc["wind"]["deg"]; // 30

int clouds_all = doc["clouds"]["all"]; // 0

long dt = doc["dt"]; // 1674207135

JsonObject sys = doc["sys"];
int sys_type = sys["type"]; // 1
int sys_id = sys["id"]; // 7576
const char* sys_country = sys["country"]; // "PK"
long sys_sunrise = sys["sunrise"]; // 1674181066
long sys_sunset = sys["sunset"]; // 1674220013

int timezone = doc["timezone"]; // 18000
long id = doc["id"]; // 1174872
const char* name = doc["name"]; // "Karachi"
int cod = doc["cod"]; // 200


      LCD.setCursor(0, 2);
      //LCD.print("Temp:    " + String(main_temp, 1));
      LCD.print("T " + String(main_temp, 1));
      LCD.print(char(0xDF));
      LCD.print("C ");
  
      //LCD.setCursor(0, 3);
      //LCD.print("Humidity ");
      LCD.print("H ");
      LCD.print(main_humidity);
      LCD.print("%");
}
http.end(); //Close connection



}
else
{
    DHTSensor();
  delay(3000);
}
delay(10000); // wait 1 minute

}