Restructure dynamic command module loading

src/index.js

@@ -1,5 +1,5 @@
 import { Client, Collection, Events, GatewayIntentBits } from 'discord.js';
-import { loadCommandModules } from '../lib/utilities/commandModules.js';
+import { loadCommandModules } from './utilities/commandModules.js';
 
 const client = new Client({ intents: [GatewayIntentBits.Guilds] });
 

src/register-slash-commands.js

@@ -1,5 +1,5 @@
 import { REST, Routes } from 'discord.js';
-import { loadCommandModules } from '../lib/utilities/commandModules.js';
+import { loadCommandModules } from './utilities/commandModules.js';
 
 // Register all slash commands, globally across all Guilds.
 const commandModules = await loadCommandModules();

src/utilities/commandModules.js

@@ -0,0 +1,46 @@
+import path from 'path';
+import { glob } from 'glob';
+import { ApplicationCommand } from 'discord.js';
+
+/**
+ * Get all command modules from the commands directory.
+ * @returns {Promise<string[]>} The file paths of all command modules.
+ */
+async function getCommandModulePaths() {
+  return await glob(path.join(process.cwd(), 'src/commands/**/*.js'));
+}
+
+/**
+ * Load a single command module.
+ * @param {string} modulePath The path to the command module.
+ * @returns {Promise<ApplicationCommand>} The loaded command module.
+ */
+async function loadCommandModule(modulePath) {
+  try {
+    const module = await import(path.resolve(modulePath));
+    const commandModule = module.default;
+
+    if (!commandModule.data || !commandModule.execute) {
+      console.warn(`Invalid command module at ${modulePath}`);
+      return;
+    }
+
+    console.info(`Loaded command module: ${commandModule.data.name}`);
+    return commandModule;
+  } catch (error) {
+    console.error(`Error loading module at ${modulePath}.`, error);
+  }
+}
+
+/**
+ * Load all command modules.
+ * @returns {Promise<ApplicationCommand[]>} The loaded command modules.
+ */
+export async function loadCommandModules() {
+  const commandModulePaths = await getCommandModulePaths();
+  const commandModules = await Promise.all(
+    commandModulePaths.map(loadCommandModule)
+  );
+
+  return commandModules.filter((module) => module);
+}