import { 
  SlashCommandBuilder, 
  PermissionFlagsBits, 
  ChatInputCommandInteraction, 
  ChannelType, 
  EmbedBuilder,
  TextChannel
} from 'discord.js';
import { prisma } from '../database';
import { SupportedLocale, t } from '../i18n';
import { logger } from '../utils/logger';

export default {
  data: new SlashCommandBuilder()
    .setName('voice')
    .setDescription('Manage temporary voice channels.')
    .setDescriptionLocalizations({
      ko: '임시 음성 채널 설정을 관리합니다.',
    })
    .setDefaultMemberPermissions(PermissionFlagsBits.Administrator)
    // --- Setup Subcommands ---
    .addSubcommandGroup(group =>
      group
        .setName('setup')
        .setDescription('Configure the voice generator channel.')
        .setDescriptionLocalizations({ ko: '음성 생성기 채널을 설정합니다.' })
        .addSubcommand(subcommand => 
          subcommand
            .setName('set')
            .setDescription('Set an existing voice channel as a Generator')
            .setDescriptionLocalizations({ ko: '기존 음성 채널을 생성기로 설정합니다' })
            .addChannelOption(option => 
              option.setName('channel')
                .setDescription('The voice channel to act as the Generator')
                .setDescriptionLocalizations({ ko: '생성기로 사용할 음성 채널' })
                .setRequired(true)
                .addChannelTypes(ChannelType.GuildVoice)
            )
            .addChannelOption(option => 
              option.setName('category')
                .setDescription('(Optional) The category where temp channels will be created')
                .setDescriptionLocalizations({ ko: '(선택) 임시 채널이 생성될 카테고리' })
                .setRequired(false)
                .addChannelTypes(ChannelType.GuildCategory)
            )
        )
        .addSubcommand(subcommand =>
          subcommand
            .setName('create')
            .setDescription('Create a new voice channel and set it as a Generator')
            .setDescriptionLocalizations({ ko: '새 음성 채널을 만들고 생성기로 설정합니다' })
            .addStringOption(option =>
              option.setName('name')
                .setDescription('The name of the new generator voice channel')
                .setDescriptionLocalizations({ ko: '새 생성기 음성 채널의 이름' })
                .setRequired(true)
            )
            .addChannelOption(option => 
              option.setName('category')
                .setDescription('(Optional) The category where the new channel will be created')
                .setDescriptionLocalizations({ ko: '(선택) 새 채널이 생성될 카테고리' })
                .setRequired(false)
                .addChannelTypes(ChannelType.GuildCategory)
            )
        )
    )
    // --- Config Subcommands ---
    .addSubcommandGroup(group =>
      group
        .setName('config')
        .setDescription('Manage default settings for temporary channels.')
        .setDescriptionLocalizations({ ko: '임시 채널의 기본 설정을 관리합니다.' })
        .addSubcommand(subcommand =>
          subcommand
            .setName('name')
            .setDescription('Set the default naming template for new temp channels.')
            .setDescriptionLocalizations({ ko: '임시 채널의 기본 이름 템플릿을 설정합니다.' })
            .addStringOption(option =>
              option.setName('template')
                .setDescription('Template using {{username}} placeholder')
                .setDescriptionLocalizations({ ko: '{{username}}을 포함한 이름 템플릿' })
                .setRequired(true)
            )
        )
        .addSubcommand(subcommand =>
          subcommand
            .setName('limit')
            .setDescription('Set the default user limit for new temp channels.')
            .setDescriptionLocalizations({ ko: '임시 채널의 기본 인원 제한을 설정합니다.' })
            .addIntegerOption(option =>
              option.setName('limit')
                .setDescription('User limit (0-99, 0 = unlimited)')
                .setDescriptionLocalizations({ ko: '인원 제한 (0-99, 0 = 무제한)' })
                .setRequired(true)
                .setMinValue(0)
                .setMaxValue(99)
            )
        )
        .addSubcommand(subcommand =>
          subcommand
            .setName('status')
            .setDescription('View current guild voice settings.')
            .setDescriptionLocalizations({ ko: '현재 서버의 음성 설정을 확인합니다.' })
        )
    ),

  async execute(interaction: ChatInputCommandInteraction, locale: SupportedLocale) {
    const group = interaction.options.getSubcommandGroup();
    const subcommand = interaction.options.getSubcommand();
    const guildId = interaction.guildId!;

    try {
      // --- SETUP GROUP ---
      if (group === 'setup') {
        const category = interaction.options.getChannel('category');

        if (subcommand === 'set') {
          const channel = interaction.options.getChannel('channel', true);
          await prisma.voiceGenerator.upsert({
            where: { channelId: channel.id },
            update: { categoryId: category?.id || null, guildId },
            create: { channelId: channel.id, guildId, categoryId: category?.id || null }
          });
          return interaction.reply({
            content: t(locale, 'commands.voiceSetup.setSuccess', { channel: `${channel}` }),
            ephemeral: true
          });
        }

        if (subcommand === 'create') {
          const name = interaction.options.getString('name', true);
          const newChannel = await interaction.guild!.channels.create({
            name,
            type: ChannelType.GuildVoice,
            parent: category?.id || null,
          });
          await prisma.voiceGenerator.create({
            data: { channelId: newChannel.id, guildId, categoryId: category?.id || null }
          });
          return interaction.reply({
            content: t(locale, 'commands.voiceSetup.createSuccess', { channel: `${newChannel}` }),
            ephemeral: true
          });
        }
      }

      // --- CONFIG GROUP ---
      if (group === 'config') {
        if (subcommand === 'name') {
          const template = interaction.options.getString('template', true);
          await prisma.voiceGuildConfig.upsert({
            where: { guildId },
            update: { defaultNameTemplate: template },
            create: { guildId, defaultNameTemplate: template }
          });
          return interaction.reply({
            content: t(locale, 'commands.voiceConfig.setSuccess'),
            ephemeral: true
          });
        }

        if (subcommand === 'limit') {
          const limit = interaction.options.getInteger('limit', true);
          await prisma.voiceGuildConfig.upsert({
            where: { guildId },
            update: { defaultUserLimit: limit },
            create: { guildId, defaultUserLimit: limit }
          });
          return interaction.reply({
            content: t(locale, 'commands.voiceConfig.setSuccess'),
            ephemeral: true
          });
        }

        if (subcommand === 'status') {
          const config = await prisma.voiceGuildConfig.findUnique({ where: { guildId } });
          const embed = new EmbedBuilder()
            .setTitle(t(locale, 'commands.voiceConfig.statusTitle'))
            .setColor(0x5865F2)
            .addFields(
              { 
                name: t(locale, 'commands.voiceConfig.templateLabel'), 
                value: `\`${config?.defaultNameTemplate || t(locale, 'voice.defaultRoomName')}\``, 
                inline: true 
              },
              { 
                name: t(locale, 'commands.voiceConfig.limitLabel'), 
                value: t(locale, 'commands.voiceConfig.limitValue', { limit: String(config?.defaultUserLimit ?? 0) }), 
                inline: true 
              }
            );
          return interaction.reply({ embeds: [embed], ephemeral: true });
        }
      }
    } catch (error) {
      logger.error('Error in voice command', error);
      return interaction.reply({
        content: t(locale, 'errors.E3003.userMessage'),
        ephemeral: true
      });
    }
  },
};