#include <WiFi.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);
const char* ssid = "Wokwi-GUEST";
const char* password = "";

void setup() {

  lcd.init();
  lcd.clear();
  lcd.backlight();      // Make sure backlight is on

  // Print a message on both lines of the LCD.
   //Set cursor to character 2 on line 0

  // put your setup code here, to run once:
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  Serial.print("Connecting to wifi...");

  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }

  Serial.println("\nConnected to the Wifi network");
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
}

void loop() {
  // put your main code here, to run repeatedly:
  if ((WiFi.status() == WL_CONNECTED)) {
    long rnd = random(1, 10);
    HTTPClient client;
    // client.begin("https://api.thingspeak.com/apps/thinghttp/send_request?api_key=J2FE0FOZ2WM7UR9T");
    client.begin("https://weather.visualcrossing.com/VisualCrossingWebServices/rest/services/timeline/Rajshahi%2CBangladesh/today?unitGroup=metric&elements=datetime%2Caddress%2Ctemp&include=current&key=XWALKZUN7TENQEHHNV33EPXDP&contentType=json");
    int httpCode = client.GET();

    if (httpCode > 0) {
      String payload = client.getString();
      Serial.println("\nStatuscode: " + String(httpCode));
      //Serial.println(payload);

      //decoding nested jason
      //full day value
      int start = payload.indexOf("{\"datetime\":");
      int end = payload.indexOf("],");
      String dayvalues = payload.substring(start, end);
      // Serial.println(dayvalues);
      // Serial.println(start);
      // Serial.println(end);


      // taking jason variables
      StaticJsonDocument<1024> doc;
      StaticJsonDocument<1024> doc2;
      StaticJsonDocument<1024> doc3;




      //current condition
      int start1 = payload.indexOf("\"currentConditions\":");
      int end1 = payload.indexOf("}}");

      String currentconditions = payload.substring(start1 + 20);
      int lenght = currentconditions.length();
      currentconditions.remove(lenght - 1, 1);
      // Serial.println(currentconditions);
      // Serial.println(start1 + 20);
      // Serial.println(end1);
      // Serial.println(lenght);

      //deserializinf json
      DeserializationError error = deserializeJson(doc, payload);
      DeserializationError error2 = deserializeJson(doc2, dayvalues);
      DeserializationError error3 = deserializeJson(doc3, currentconditions);


      // listing data
      double latitude = doc["latitude"];
      double longitude = doc["longitude"];
      String address = doc["address"];
      String datetime = doc2["datetime"];
      float temp = doc2["temp"];
      String currentDatetime = doc3["datetime"];
      float currentTemp = doc3["temp"];

      Serial.print("Address: ");
      Serial.println(address);
      Serial.print("Date: ");
      Serial.println(datetime);
      Serial.print("Time: ");
      Serial.println(currentDatetime);
      Serial.print("Average Temperature: ");
      Serial.println(temp);
      Serial.print("Current Temperature: ");
      Serial.println(currentTemp);

      //lcd print
      lcd.setCursor(0, 0); 
      lcd.print(address);
      lcd.setCursor(0, 1);
      for(;;)
      {
        lcd.scrollDisplayLeft();
    delay(400);
      }
      
      lcd.print("Temperature:");
      lcd.setCursor(13,1);
      lcd.print(currentTemp);


      // Test if parsing succeeds.
      if (error) {
        Serial.print(F("deserializeJson() failed: "));
        Serial.println(error.f_str());
        return;
      }

      //start listing the data



    } else {
      Serial.println("Connection lost");
    }
  } else {
    Serial.println("Conection lost");
  }
  delay(10000);
}