Changing commands to dynamic handling rather than if/else.

commands/ping.js

@@ -0,0 +1,10 @@
+const { SlashCommandBuilder } = require('@discordjs/builders');
+
+module.exports = {
+    data: new SlashCommandBuilder()
+        .setName('ping')
+        .setDescription('Pings caller!'),
+    async execute(interaction) {
+        await interaction.reply(`Ping! <@${interaction.user.id}>`);
+    },
+};

commands/server.js

@@ -0,0 +1,10 @@
+const { SlashCommandBuilder } = require('@discordjs/builders');
+
+module.exports = {
+    data: new SlashCommandBuilder()
+        .setName('server')
+        .setDescription('Provides server information.'),
+    async execute(interaction) {
+        await interaction.reply(`Server name: ${interaction.guild.name}\nTotal members: ${interaction.guild.memberCount}`);
+    },
+};

commands/user.js

@@ -0,0 +1,10 @@
+const { SlashCommandBuilder } = require('@discordjs/builders');
+
+module.exports = {
+    data: new SlashCommandBuilder()
+        .setName('user')
+        .setDescription('Provides user information.'),
+    async execute(interaction) {
+        await interaction.reply(`Your tag: ${interaction.user.tag}\nYour id: ${interaction.user.id}`);
+    },
+};

deploy-commands.js

@@ -1,14 +1,18 @@
-const { SlashCommandBuilder } = require('@discordjs/builders');
+const fs = require('node:fs');
+const path = require('node:path');
 const { REST } = require('@discordjs/rest');
 const { Routes } = require('discord-api-types/v9');
 const { clientId, guildId, token } = require('./config.json');
 
-const commands = [
-    new SlashCommandBuilder().setName('ping').setDescription('Replies with pong!'),
-    new SlashCommandBuilder().setName('server').setDescription('Replies with server info!'),
-    new SlashCommandBuilder().setName('user').setDescription('Replies with user info!'),
-]
-    .map(command => command.toJSON());
+const commands = [];
+const commandsPath = path.join(__dirname, 'commands');
+const commandFiles = fs.readdirSync(commandsPath).filter(file => file.endsWith('.js'));
+
+for (const file of commandFiles) {
+    const filePath = path.join(commandsPath, file);
+    const command = require(filePath);
+    commands.push(command.data.toJSON());
+}
 
 const rest = new REST({ version: '9' }).setToken(token);
 

index.js

@@ -1,14 +1,45 @@
+const fs = require('node:fs');
+const path = require('node:path');
+
 // Require the necessary discord.js classes
-const { Client, Intents } = require('discord.js');
+const { Client, Collection, Intents } = require('discord.js');
 const { token } = require('./config.json');
 
 // Create a new client instance
 const client = new Client({ intents: [Intents.FLAGS.GUILDS] });
 
+client.commands = new Collection();
+const commandsPath = path.join(__dirname, 'commands');
+const commandFiles = fs.readdirSync(commandsPath).filter(file => file.endsWith('.js'));
+
+for (const file of commandFiles) {
+    const filePath = path.join(commandsPath, file);
+    const command = require(filePath);
+    // Set a new item in the Collection
+    // With the key as the command name and the value as the exported module
+    client.commands.set(command.data.name, command);
+}
+
 // When the client is ready, run this code (only once)
 client.once('ready', () => {
     console.log('Ready!');
 });
 
+client.on('interactionCreate', async interaction => {
+    if (!interaction.isCommand()) return;
+
+    const command = client.commands.get(interaction.commandName);
+
+    if (!command) return;
+
+    try {
+        await command.execute(interaction);
+    }
+    catch (error) {
+        console.error(error);
+        await interaction.reply({ content: 'There was an error while executing this command!', ephemeral: true });
+    }
+});
+
 // Login to Discord with your client's token
 client.login(token);