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Sunday, 22 June 2025

ESP 32 PENERIMA NOTIF DAN SMS KE NO TUJUAN

 #include <WiFi.h>
#include <WebServer.h>
#include <Preferences.h>
// #include <SoftwareSerial.h> // Aktifkan jika sudah menghubungkan SIM800L

// --- Pengaturan Dasar ---
#define MAX_CODES 10 // Jumlah maksimal kode notifikasi

// Variabel Global
Preferences preferences;
WebServer server(80);

// Pengaturan WiFi Client (Default)
String client_ssid = "Dara@home";
String client_pass = "rejeki88";

// Pengaturan Access Point (Fallback)
const char* ap_ssid = "PUTU@TECKNO-SIM800L";
const char* ap_pass = "rejeki88";

// Array untuk menyimpan kode notifikasi yang diizinkan
String allowedCodes[MAX_CODES];

// Variabel untuk menyimpan status
String lastNotification = "Belum ada";
String ipAddress = "N/A";

/*
// --- PENGATURAN UNTUK SIM800L (CONTOH) ---
// Hubungkan pin TX SIM800L ke D2 (GPIO 2) dan RX ke D3 (GPIO 3)
// SoftwareSerial sim800l(2, 3); // RX, TX
// String targetPhoneNumber = "+6281234567890"; // Ganti dengan nomor target SMS

// Fungsi untuk mengirim SMS
void sendSMS(String message) {
  Serial.println("Mengirim SMS: " + message);
  // sim800l.println("AT+CMGF=1"); // Set mode teks
  // delay(1000);
  // sim800l.println("AT+CMGS=\"" + targetPhoneNumber + "\"");
  // delay(1000);
  // sim800l.print(message); // Isi pesan
  // delay(100);
  // sim800l.write(26); // Karakter CTRL+Z untuk mengirim
  // delay(1000);
  // Serial.println("SMS terkirim.");
}
*/

// --- Fungsi-fungsi Web Server ---

// Tampilkan halaman web utama
void handleRoot() {
  String html = "<!DOCTYPE html><html><head><meta charset='UTF-8' name='viewport' content='width=device-width, initial-scale=1.0'>"
                "<title>ESP32 Receiver Config</title>"
                "<style>"
                "body{font-family:Arial,sans-serif;background:#f2f2f2;margin:0;padding:15px;}"
                ".container{max-width:800px;margin:auto;background:white;padding:20px;border-radius:10px;box-shadow:0 2px 10px rgba(0,0,0,0.1);}"
                "h1,h2{color:#333;}"
                "form label{display:block;margin-top:10px;font-weight:bold;}"
                "form input[type='text'],form input[type='password']{width:calc(100% - 20px);padding:8px;margin-top:5px;border:1px solid #ccc;border-radius:5px;}"
                "form input[type='submit']{background-color:#007bff;color:white;border:none;padding:12px 20px;border-radius:5px;cursor:pointer;font-size:16px;margin-top:20px;}"
                ".status{background:#e9f5ff;border-left:5px solid #007bff;padding:10px;margin-top:20px;}"
                ".grid{display:grid;grid-template-columns:repeat(auto-fit, minmax(250px, 1fr));grid-gap:10px;}"
                "</style></head><body>"
                "<div class='container'>"
                "<h1>Konfigurasi Penerima Notifikasi</h1>"
                "<div class='status'>"
                "<h2>Status Saat Ini</h2>"
                "<strong>Status WiFi:</strong> " + (WiFi.status() == WL_CONNECTED ? "Terhubung ke " + client_ssid : "Mode Access Point Aktif") + "<br>"
                "<strong>Alamat IP:</strong> " + ipAddress + "<br>"
                "<strong>Notifikasi Terakhir:</strong> " + lastNotification +
                "</div>"
                "<form action='/save' method='post'>"
                "<h2>Pengaturan WiFi Client</h2>"
                "<label for='ssid'>Nama WiFi (SSID):</label>"
                "<input type='text' name='ssid' value='" + client_ssid + "'>"
                "<label for='password'>Password WiFi:</label>"
                "<input type='password' name='password' value='" + client_pass + "'>"
                "<h2>Kode Notifikasi yang Diizinkan (10 Kode)</h2>"
                "<div class='grid'>";

  for (int i = 0; i < MAX_CODES; i++) {
    html += "<div><label for='code" + String(i) + "'>Kode #" + String(i + 1) + "</label>"
            "<input type='text' name='code" + String(i) + "' value='" + allowedCodes[i] + "'></div>";
  }

  html += "</div>"
          "<input type='submit' value='Simpan Pengaturan & Restart'>"
          "</form></div></body></html>";

  server.send(200, "text/html", html);
}

// Simpan konfigurasi dari form
void handleSave() {
  preferences.begin("config", false);

  // Simpan kredensial WiFi
  client_ssid = server.arg("ssid");
  client_pass = server.arg("password");
  preferences.putString("ssid", client_ssid);
  preferences.putString("password", client_pass);

  // Simpan 10 kode notifikasi
  for (int i = 0; i < MAX_CODES; i++) {
    allowedCodes[i] = server.arg("code" + String(i));
    preferences.putString(("code" + String(i)).c_str(), allowedCodes[i]);
  }

  preferences.end();

  String html = "<!DOCTYPE html><html><head><title>Saved</title><style>"
                "body{font-family:Arial,sans-serif;text-align:center;padding-top:50px;}"
                "h1{color:#4CAF50;}"
                "</style></head><body>"
                "<h1>Pengaturan Disimpan!</h1>"
                "<p>Perangkat akan restart dalam 2 detik...</p>"
                "</body></html>";
  server.send(200, "text/html", html);
  delay(2000);
  ESP.restart();
}

// Tangani notifikasi yang masuk
void handleNotif() {
  if (server.hasArg("src")) {
    String receivedCode = server.arg("src");
    Serial.println("Notifikasi diterima: " + receivedCode);
    lastNotification = receivedCode; // Update status notifikasi terakhir

    bool isValid = false;
    for (int i = 0; i < MAX_CODES; i++) {
      if (allowedCodes[i] != "" && receivedCode == allowedCodes[i]) {
        isValid = true;
        break;
      }
    }

    if (isValid) {
      Serial.println("Kode valid. Memicu aksi...");
      server.send(200, "text/plain", "OK. Notification received.");
      
      // --- TEMPATKAN AKSI ANDA DI SINI ---
      // Contoh: Kirim SMS dengan SIM800L
      // sendSMS(receivedCode);
      // ------------------------------------

    } else {
      Serial.println("Kode tidak valid.");
      server.send(401, "text/plain", "Unauthorized. Code not in allowed list.");
    }
  } else {
    server.send(400, "text/plain", "Bad Request. 'src' parameter missing.");
  }
}

// --- Fungsi Setup dan Loop ---

void loadSettings() {
  preferences.begin("config", true); // Buka NVS dalam mode read-only
  client_ssid = preferences.getString("ssid", "Dara@home");
  client_pass = preferences.getString("password", "rejeki88");
  for (int i = 0; i < MAX_CODES; i++) {
    // Default kode notifikasi dari monitor tegangan Anda
    String default_msg = "";
    if (i == 0) default_msg = "UPS1 MATI";
    if (i == 1) default_msg = "UPS2 MATI";
    if (i == 2) default_msg = "PLN MATI";
    if (i == 3) default_msg = "GENSET MATI";

    allowedCodes[i] = preferences.getString(("code" + String(i)).c_str(), default_msg);
  }
  preferences.end();
}

void setupWiFi() {
  WiFi.mode(WIFI_STA);
  WiFi.begin(client_ssid.c_str(), client_pass.c_str());

  Serial.print("Menghubungkan ke " + client_ssid);
  int attempts = 0;
  while (WiFi.status() != WL_CONNECTED && attempts < 20) { // Coba selama 10 detik
    delay(500);
    Serial.print(".");
    attempts++;
  }

  if (WiFi.status() == WL_CONNECTED) {
    Serial.println("\nTerhubung!");
    ipAddress = WiFi.localIP().toString();
    Serial.println("Alamat IP: " + ipAddress);
  } else {
    Serial.println("\nKoneksi Gagal. Mengaktifkan Mode Access Point.");
    WiFi.mode(WIFI_AP);
    WiFi.softAP(ap_ssid, ap_pass);
    ipAddress = WiFi.softAPIP().toString();
    Serial.println("AP SSID: " + String(ap_ssid));
    Serial.println("Alamat IP AP: " + ipAddress);
  }
}

void setup() {
  Serial.begin(115200);
  Serial.println("\nMemulai ESP32 Penerima...");

  // Inisialisasi SIM800L (aktifkan jika digunakan)
  // sim800l.begin(9600);
 
  loadSettings();
  setupWiFi();

  // Daftarkan handler untuk setiap halaman
  server.on("/", HTTP_GET, handleRoot);
  server.on("/save", HTTP_POST, handleSave);
  server.on("/notif", HTTP_GET, handleNotif);

  server.begin();
  Serial.println("Web Server dimulai.");
}

void loop() {
  server.handleClient(); // Wajib untuk melayani permintaan web
}

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