'use strict';

const fs = require('fs');
const path = require('path');
const { Events } = require('discord.js');
const guildMemberAddEvent = require('../events/guildMemberAdd');
const logger = require('../utils/logger');

/**
 * Loads all event files from src/events and registers them on the client.
 * Each event file must export: { name, once?, execute }
 *
 * @param {import('discord.js').Client} client
 */
function loadEvents(client) {
  const eventsPath = path.join(__dirname, '..', 'events');
  const eventFiles = fs
    .readdirSync(eventsPath)
    .filter((file) => file.endsWith('.js'));

  let loaded = 0;

  for (const file of eventFiles) {
    try {
      const event = require(path.join(eventsPath, file));

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

      if (event.once) {
        client.once(event.name, (...args) => event.execute(client, ...args));
      } else {
        client.on(event.name, (...args) => event.execute(client, ...args));
      }

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

  client.on(Events.GuildMemberAdd, guildMemberAddEvent.bind(null, client));
  loaded++;

  logger.info(`[eventhandler] ${loaded} event(s) registered`);
}

module.exports = { loadEvents };