'use strict';

const fs = require('fs');
const path = require('path');
const logger = require('../utils/logger');

/**
 * @param {import('discord.js').Client} client
 */
function loadCommands(client) {
  const commandsPath = path.join(__dirname, '..', 'commands');

  function getAllCommandFiles(dir) {
    let results = [];
    const list = fs.readdirSync(dir, { withFileTypes: true });
    for (const entry of list) {
      const fullPath = path.join(dir, entry.name);
      if (entry.isDirectory()) {
        results = results.concat(getAllCommandFiles(fullPath));
      } else if (entry.isFile() && entry.name.endsWith('.js')) {
        results.push(path.relative(commandsPath, fullPath));
      }
    }
    return results;
  }

  const commandFiles = getAllCommandFiles(commandsPath);

  let loaded = 0;

  for (const file of commandFiles) {
    try {
      const command = require(path.join(commandsPath, file));

      if (!command.name || typeof command.execute !== 'function') {
        logger.warn(
          `[commandhandler] skipping ${file}: missing "name" or "execute"`,
        );
        continue;
      }

      client.commands.set(command.name.toLowerCase(), command);

      if (Array.isArray(command.aliases)) {
        for (const alias of command.aliases) {
          client.commands.set(alias.toLowerCase(), command);
        }
      }

      logger.debug(`[commandhandler] loaded command: ${command.name}`);
      loaded++;
    } catch (err) {
      logger.error(`[commandhandler] failed to load ${file}:`, err);
    }
  }

  logger.info(`[commandhandler] ${loaded} command(s) loaded`);
}

module.exports = { loadCommands };