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);
}