#define BLYNK_PRINT Serial  
#define BLYNK_TEMPLATE_ID "TMPL6vDSP5ViA"
#define BLYNK_TEMPLATE_NAME "LED"
#define BLYNK_AUTH_TOKEN "72_26W6voso5GjOGEhNwMudfq_k2BTBh"
#include <WiFi.h>
#include <WiFiClientSecure.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <HTTPClient.h>

char auth[] = "72_26W6voso5GjOGEhNwMudfq_k2BTBh";
const char* ssid = "Wokwi-GUEST"; // Wifi name
const char* pass = "";        // Wifi pass
const char* webAppUrl = "https://script.google.com/macros/s/AKfycbwQw5u9PjJgs0RlAtSc80DuwFZQzdChCx_mllJthYGNrxVQcpxLpcnrhNe6vDk5gim5/exec";

BlynkTimer timer;

#define LED 13
#define LED2 12
int SW_State = 0;

BLYNK_WRITE(V0)
{
    SW_State = param.asInt();
    if (SW_State == 1)
    {
        digitalWrite(LED, HIGH);
        String lampu = "LAMPU MERAH HIDUP";
        Serial.println(lampu);
        Blynk.virtualWrite(V0, HIGH);
        sendDataToScript(lampu);
       
    }
    else
    {
        digitalWrite(LED, LOW);
        String lampu = "LAMPU MERAH MATI";
        Serial.println(lampu);
        Blynk.virtualWrite(V0, LOW);
        sendDataToScript(lampu);
   
    }
}

BLYNK_WRITE(V1)
{
    SW_State = param.asInt();
    if (SW_State == 1)
    {
        digitalWrite(LED2, HIGH);
        String lampu = "LAMPU HIJAU HIDUP";
        Serial.println(lampu);
        Blynk.virtualWrite(V1, HIGH);
        sendDataToScript(lampu);
     
    }
    else
    {
        digitalWrite(LED2, LOW);
        String lampu = "LAMPU HIJAU MATI";
        Serial.println(lampu);
        Blynk.virtualWrite(V1, LOW);
        sendDataToScript(lampu);
    
    }
}

void setup()
{
    Serial.begin(115200);
    pinMode(LED, OUTPUT);
    pinMode(LED2, OUTPUT);
    delay(100);
    
    Blynk.begin(auth, ssid, pass);
    while (WiFi.status() != WL_CONNECTED) {
        delay(1000);
        Serial.println("Connecting to WiFi...");
    }
    Serial.println("Connected to WiFi");
  
}

void loop()
{
    Blynk.run();
    timer.run();
    delay(2000);
}

void sendDataToScript(String lampu) {
    if (WiFi.status() != WL_CONNECTED) {
        Serial.println("WiFi not connected, can't send data");
        return;
    }
    HTTPClient http;
   
    String serverPath = String(webAppUrl) + "?lampu=" + urlEncode(lampu);

    Serial.print("Connecting to server: ");
    Serial.println(serverPath);

    // Send HTTP GET request
    if (http.begin(serverPath.c_str())) {
      int httpCode = http.GET();
      if (httpCode > 0) {
        Serial.print("Server response code: ");
        Serial.println(httpCode);
        // String payload = http.getString();
        // Serial.println("Server response: " + payload);
      } else {
        Serial.print("HTTP GET request failed with error code: ");
        Serial.println(httpCode);
        Serial.println("Error message: " + http.errorToString(httpCode));
      }
      http.end();
    } else {
      Serial.println("Unable to connect to the server");
    }
    delay(2000);
}

String urlEncode(String str) {
    String encodedString = "";
    char c;
    for (int i = 0; i < str.length(); i++) {
        c = str.charAt(i);
        if (isalnum(c)) {
            encodedString += c;
        } else {
            encodedString += '%';
            encodedString += charToHex(c >> 4);
            encodedString += charToHex(c & 15);
        }
    }
    return encodedString;
}

char charToHex(char c) {
    if (c < 10) return '0' + c;
    return 'A' + c - 10;
}