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)
    // --- Generator Subcommand ---
    .addSubcommand(subcommand =>
      subcommand
        .setName('generator')
        .setDescription('Configure the voice generator channel.')
        .setDescriptionLocalizations({ ko: '음성 생성기 채널을 설정합니다.' })
        .addStringOption(option =>
          option.setName('action')
            .setDescription('Action to perform')
            .setRequired(true)
            .addChoices(
              { name: 'set (Set Existing)', value: 'set' },
              { name: 'create (Create New)', value: 'create' },
            )
        )
        .addChannelOption(option =>
          option.setName('channel')
            .setDescription('Voice channel (for set action)')
            .addChannelTypes(ChannelType.GuildVoice)
        )
        .addStringOption(option =>
          option.setName('name')
            .setDescription('New channel name (for create action)')
        )
        .addChannelOption(option =>
          option.setName('category')
            .setDescription('Target category for temp channels')
            .addChannelTypes(ChannelType.GuildCategory)
        )
    )
    // --- Settings Subcommand ---
    .addSubcommand(subcommand =>
      subcommand
        .setName('settings')
        .setDescription('Manage default settings for temporary channels.')
        .setDescriptionLocalizations({ ko: '임시 채널의 기본 설정을 관리합니다.' })
        .addStringOption(option =>
          option.setName('action')
            .setDescription('Action to perform')
            .setRequired(true)
            .addChoices(
              { name: 'name (Template)', value: 'name' },
              { name: 'limit (User Count)', value: 'limit' },
              { name: 'status (Check Config)', value: 'status' },
            )
        )
        .addStringOption(option =>
          option.setName('template')
            .setDescription('Naming template (for name action)')
        )
        .addIntegerOption(option =>
          option.setName('limit')
            .setDescription('User limit (for limit action)')
            .setMinValue(0)
            .setMaxValue(99)
        )
    ),

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

    try {
      // --- GENERATOR ---
      if (subcommand === 'generator') {
        const action = interaction.options.getString('action', true);
        const category = interaction.options.getChannel('category');

        if (action === 'set') {
          const channel = interaction.options.getChannel('channel');
          if (!channel) return interaction.reply({ content: '❌ `channel` 옵션을 선택해주세요.', ephemeral: 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 (action === 'create') {
          const name = interaction.options.getString('name');
          if (!name) return interaction.reply({ content: '❌ `name` 옵션을 입력해주세요.', ephemeral: 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
          });
        }
      }

      // --- SETTINGS ---
      if (subcommand === 'settings') {
        const action = interaction.options.getString('action', true);

        if (action === 'name') {
          const template = interaction.options.getString('template');
          if (!template) return interaction.reply({ content: '❌ `template` 옵션을 입력해주세요.', ephemeral: 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 (action === 'limit') {
          const limit = interaction.options.getInteger('limit');
          if (limit === null) return interaction.reply({ content: '❌ `limit` 옵션을 입력해주세요.', ephemeral: 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 (action === '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
      });
    }
  },
};