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

const char* ssid = "Wokwi-GUEST";
const char* password = "";

const int pin = 15; 

String phoneNumber = "+6281315877267";
String apiKey = "3297288";

String urlEncode(String str) {
  String encodedString = "";
  char c;
  char code0;
  char code1;
  char code2;
  for (int i = 0; i < str.length(); i++) {
    c = str.charAt(i);
    if (c == ' ') {
      encodedString += '+';
    } else if (isalnum(c)) {
      encodedString += c;
    } else {
      code1 = (c & 0xf) + '0';
      if ((c & 0xf) > 9) {
        code1 = (c & 0xf) - 10 + 'A';
      }
      c = (c >> 4) & 0xf;
      code0 = c + '0';
      if (c > 9) {
        code0 = c - 10 + 'A';
      }
      code2 = '\0';
      encodedString += '%';
      encodedString += code0;
      encodedString += code1;
    }
    yield();
  }
  return encodedString;
}

void sendMessage(String message) {
  HTTPClient http;
  String url = "https://api.callmebot.com/whatsapp.php?phone=" + phoneNumber + "&apikey=" + apiKey + "&text=" + urlEncode(message);

  http.begin(url);

  int httpResponseCode = http.GET(); // Ubah POST menjadi GET untuk CallMeBot

  if (httpResponseCode == 200) {
    Serial.println("Message sent successfully");
  } else {
    Serial.println("Error sending the message");
    Serial.print("HTTP response code: ");
    Serial.println(httpResponseCode);
  }

  http.end();
}

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

  WiFi.begin(ssid, password);
  Serial.println("Connecting");

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

  Serial.println("");
  Serial.print("Connected to WiFi network with IP Address: ");
  Serial.println(WiFi.localIP());
  
  pinMode(pin, INPUT); // Atur mode pin untuk PIR sensor
}

void loop() {
  int IP = digitalRead(pin);
  delay(100);

  if (IP == 1) {
    sendMessage("LAPOR KOMANDAN DANI! Ada Orang Yang Sangat Mencurigakan.");
    delay(1000);
  } else {
    delay(1000);
  }
}