#include <TinyGPS++.h>
#include <SoftwareSerial.h>
#include <ESP8266WiFi.h>
#include <ArduinoJson.h>

static const int RXPin = 12, TXPin = 13; //RXPin 12 = D7 TXPin 13 = D6
static const uint32_t GPSBaud = 9600;
TinyGPSPlus gps;
SoftwareSerial ss(RXPin, TXPin);

const char* ssid = "Dimscull";
const char* password = "10102000";

const char* thingSpeakApiKey = "XJFU1VN466VZPI1W";
const char* thingSpeakChannelId = "2567862";

void setup()
{
  Serial.begin(115200);
  ss.begin(GPSBaud);
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED)
  {
    delay(15000);
    Serial.println("Connecting to WiFi...");
  }

  Serial.println("Connected to WiFi");
}

void loop()
{
  while (ss.available() > 0)
  {
    if (gps.encode(ss.read()))
    {
      if (gps.location.isValid())
      {
        float latitude = gps.location.lat();
        float longitude = gps.location.lng();
        
        Serial.print("Latitude: ");
        Serial.println(latitude, 6);
        
        Serial.print("Longitude: ");
        Serial.println(longitude, 6);

        // Kirim data ke ThingSpeak
        sendDataToThingSpeak(latitude, longitude);
      }
      else
      {
        Serial.println("No GPS data available.");
      }
    }
  }
}

void sendDataToThingSpeak(float latitude, float longitude)
{
  WiFiClient client;

  // URL untuk permintaan HTTP POST ke ThingSpeak
  String url = "/update?";
  url += "api_key=";
  url += thingSpeakApiKey;
  url += "&field1=";
  url += String(latitude, 6);
  url += "&field2=";
  url += String(longitude, 6);

  // Hubungkan ke server ThingSpeak
  if (client.connect("api.thingspeak.com", 80))
  {
    // Kirim permintaan HTTP POST ke ThingSpeak
    client.print(String("GET ") + url + " HTTP/1.1\r\n" +
                 "Host: api.thingspeak.com\r\n" +
                 "Connection: close\r\n\r\n");

    // Tunggu hingga tanggapan dari server
    while (!client.available())
      delay(1);

    // Cetak tanggapan dari server (opsional)
    while (client.available())
    {
      Serial.write(client.read());
    }

    Serial.println("Data berhasil dikirim ke ThingSpeak.");
  }
  else
  {
    Serial.println("Gagal terhubung ke ThingSpeak.");
  }
  client.stop();
}