Tutorial Membuat Bot Discord dengan discord.js

nixpoinbot/
├── config.json            # File konfigurasi bot (token, clientId, guildId, dll)
├── index.js               # File utama untuk menjalankan bot Discord
├── deploy-commands.js     # Script untuk mendaftarkan (deploy) slash commands ke Discord
├── package.json           # Informasi project dan daftar dependencies
├── package-lock.json      # Lock versi dependency agar konsisten
└── commands/              # Folder untuk semua slash command bot
    └── utility/           # Kategori command utilitas
        └── ping.js        # Command /ping percobaan

//config.json
{
  "token": "MTQ2MDUzMTgxODk2ODEyNTQ3MQ.GCplUF.9M3sUgaXfXHdtcbDYLRLbQ22LXZAqYfSTdsdoA",
    "clientId": "1460531818968125471"
}

//index.js
// Import module bawaan Node.js untuk membaca file dan path folder
const fs = require('node:fs');
const path = require('node:path');

// Import class dan enum yang dibutuhkan dari discord.js
const { Client, Events, GatewayIntentBits, Collection, MessageFlags } = require('discord.js');

// Ambil token bot dari file config.json
const { token } = require('./config.json');

// Membuat instance client Discord dengan intent Guilds (wajib untuk slash command)
const client = new Client({ intents: [GatewayIntentBits.Guilds] });

// Event yang dijalankan sekali saat bot berhasil login
client.once(Events.ClientReady, (readyClient) => {
  console.log(`Ready! Logged in as ${readyClient.user.tag}`);
});

// Membuat Collection untuk menyimpan semua command
client.commands = new Collection();

// Path ke folder commands
const foldersPath = path.join(__dirname, 'commands');

// Membaca semua sub-folder di dalam folder commands
const commandFolders = fs.readdirSync(foldersPath);

// Loop setiap folder command (contoh: utility)
for (const folder of commandFolders) {
  const commandsPath = path.join(foldersPath, folder);

  // Ambil semua file .js di dalam folder command
  const commandFiles = fs
    .readdirSync(commandsPath)
    .filter((file) => file.endsWith('.js'));

  // Loop setiap file command
  for (const file of commandFiles) {
    const filePath = path.join(commandsPath, file);

    // Import file command
    const command = require(filePath);

    // Pastikan command memiliki properti data dan execute
    if ('data' in command && 'execute' in command) {
      // Simpan command ke Collection dengan nama command sebagai key
      client.commands.set(command.data.name, command);
    } else {
      // Warning jika struktur command tidak sesuai
      console.log(
        `[WARNING] The command at ${filePath} is missing a required "data" or "execute" property.`
      );
    }
  }
}

// Event yang dipicu saat ada interaksi (slash command, button, dll)
client.on(Events.InteractionCreate, async (interaction) => {
  // Hanya proses slash command
  if (!interaction.isChatInputCommand()) return;

  // Ambil command berdasarkan nama yang dipanggil
  const command = interaction.client.commands.get(interaction.commandName);

  // Jika command tidak ditemukan
  if (!command) {
    console.error(`No command matching ${interaction.commandName} was found.`);
    return;
  }

  try {
    // Jalankan fungsi execute dari command
    await command.execute(interaction);
  } catch (error) {
    console.error(error);

    // Jika interaction sudah dibalas sebelumnya
    if (interaction.replied || interaction.deferred) {
      await interaction.followUp({
        content: 'There was an error while executing this command!',
        flags: MessageFlags.Ephemeral, // Pesan hanya terlihat oleh user
      });
    } else {
      // Jika interaction belum dibalas sama sekali
      await interaction.reply({
        content: 'There was an error while executing this command!',
        flags: MessageFlags.Ephemeral, // Pesan hanya terlihat oleh user
      });
    }
  }
});

// Login ke Discord menggunakan token bot
client.login(token);

//ping.js
// Import SlashCommandBuilder untuk membuat slash command
const { SlashCommandBuilder } = require('discord.js');

module.exports = {
  // Definisi data command (nama & deskripsi slash command)
  data: new SlashCommandBuilder()
    .setName('ping') // Nama command: /ping
    .setDescription('Replies with Pong!'), // Deskripsi command

  // Fungsi yang dijalankan saat command dipanggil
  async execute(interaction) {
    // Membalas interaksi user dengan pesan "Pong!"
    await interaction.reply('Pong!');
  },
};

//deploy-commands.js
// Import REST client dan Routes untuk registrasi slash command ke Discord API
const { REST, Routes } = require('discord.js');

// Ambil clientId, guildId (opsional), dan token dari config.json
const { clientId, guildId, token } = require('./config.json');

// Import module bawaan Node.js
const fs = require('node:fs');
const path = require('node:path');

// Array untuk menampung semua data slash command
const commands = [];

// Path ke folder commands
const foldersPath = path.join(__dirname, 'commands');

// Ambil semua sub-folder di dalam folder commands
const commandFolders = fs.readdirSync(foldersPath);

// Loop setiap folder command (contoh: utility)
for (const folder of commandFolders) {
  // Path ke folder command tertentu
  const commandsPath = path.join(foldersPath, folder);

  // Ambil semua file .js di folder tersebut
  const commandFiles = fs
    .readdirSync(commandsPath)
    .filter((file) => file.endsWith('.js'));

  // Loop setiap file command
  for (const file of commandFiles) {
    const filePath = path.join(commandsPath, file);

    // Import file command
    const command = require(filePath);

    // Pastikan command memiliki data dan execute
    if ('data' in command && 'execute' in command) {
      // Konversi SlashCommandBuilder ke format JSON lalu simpan
      commands.push(command.data.toJSON());
    } else {
      // Warning jika struktur command tidak sesuai
      console.log(
        `[WARNING] The command at ${filePath} is missing a required "data" or "execute" property.`
      );
    }
  }
}

// Membuat instance REST client dan set token bot
const rest = new REST().setToken(token);

// Jalankan proses deploy slash command
(async () => {
  try {
    console.log(`Started refreshing ${commands.length} application (/) commands.`);

    // Mengirim ulang (refresh) semua slash command ke Discord
    // Global command (berlaku di semua server, update bisa sampai ±1 jam)
    const data = await rest.put(
      Routes.applicationCommands(clientId),
      { body: commands }
    );

    console.log(`Successfully reloaded ${data.length} application (/) commands.`);
  } catch (error) {
    // Menangkap dan menampilkan error jika deploy gagal
    console.error(error);
  }
})();

node deploy-commands.js

node .

git init
git add .
git commit -m tesbot
heroku create
git push heroku master