Discord.js v14 教程：实现机器人音频播放完毕后自动退出语音频道

const { SlashCommandBuilder, ChannelType, EmbedBuilder } = require('discord.js');
const { getVoiceConnection, entersState, joinVoiceChannel, createAudioPlayer, createAudioResource, VoiceConnectionStatus, AudioPlayerStatus } = require('@discordjs/voice');
const { join } = require('node:path');

module.exports = {
    data: new SlashCommandBuilder()
        .setName('playaudio')
        .setDescription('播放一个音频文件并自动退出频道。')
        .addChannelOption(option => 
            option.setName('channel')
                .setDescription('要加入的语音频道。')
                .setRequired(true)
                .addChannelTypes(ChannelType.GuildVoice)), // 确保只选择语音频道

    async execute(interaction) {
        if (!interaction.isChatInputCommand()) return;

        const voiceChannel = interaction.options.getChannel('channel');

        // 检查用户是否在语音频道中（可选，但推荐）
        if (!interaction.member.voice.channelId) {
            return interaction.reply({ content: '你必须在一个语音频道中才能使用此命令！', ephemeral: true });
        }

        // 确保机器人加入的是用户所在的频道，或指定的频道
        if (voiceChannel.type !== ChannelType.GuildVoice) {
            return interaction.reply({ content: '请选择一个有效的语音频道。', ephemeral: true });
        }

        let voiceConnection;
        try {
            // 尝试获取现有连接，如果没有则创建新连接
            voiceConnection = getVoiceConnection(interaction.guild.id);
            if (!voiceConnection) {
                voiceConnection = joinVoiceChannel({
                    channelId: voiceChannel.id,
                    guildId: interaction.guild.id,
                    adapterCreator: interaction.guild.voiceAdapterCreator,
                    selfDeaf: true, // 机器人默认应该自闭麦
                });
            } else {
                // 如果机器人已在其他频道，可以考虑移动或提示
                if (voiceConnection.channel.id !== voiceChannel.id) {
                    // 机器人已经在其他频道，可以销毁旧连接并创建新连接，或者直接移动
                    // 为简化，这里假设机器人会加入指定频道，如果已在其他频道，则先销毁
                    voiceConnection.destroy();
                    voiceConnection = joinVoiceChannel({
                        channelId: voiceChannel.id,
                        guildId: interaction.guild.id,
                        adapterCreator: interaction.guild.voiceAdapterCreator,
                        selfDeaf: true,
                    });
                }
            }

            // 等待语音连接准备就绪
            await entersState(voiceConnection, VoiceConnectionStatus.Ready, 5000);
            console.log(`机器人已连接到语音频道: ${voiceChannel.name}`);

            const player = createAudioPlayer();
            // 假设你的MP3文件路径在项目根目录下的 medias/sound_effect/padorupadoru.mp3
            // 请根据实际情况调整路径
            const resource = createAudioResource(join(__dirname, '../../medias/sound_effect/padorupadoru.mp3'));

            // 将播放器订阅到语音连接
            voiceConnection.subscribe(player);
            player.play(resource);

            // 监听播放器状态变化事件
            player.on(AudioPlayerStatus.Idle, () => {
                console.log('音频播放完毕，机器人正在离开语音频道。');
                voiceConnection.destroy(); // 销毁语音连接
                interaction.followUp({ content: '音频播放完毕，机器人已离开频道。', ephemeral: true });
            });

            // 监听播放器错误事件
            player.on('error', error => {
                console.error(`播放器发生错误: ${error.message}`);
                voiceConnection.destroy();
                interaction.followUp({ content: `播放音频时发生错误: ${error.message}，机器人已离开频道。`, ephemeral: true });
            });

            // 回复交互，通知用户开始播放
            await interaction.reply({ content: `正在 ${voiceChannel.name} 播放音频...`, ephemeral: true });

        } catch (error) {
            console.error(`连接语音频道或播放音频时出错:`, error);
            if (voiceConnection && voiceConnection.state.status !== VoiceConnectionStatus.Destroyed) {
                voiceConnection.destroy(); // 确保在错误发生时也断开连接
            }
            await interaction.reply({ content: `连接语音频道或播放音频时出错: ${error.message}`, ephemeral: true });
        }
    }
};