import { SlashCommandBuilder, PermissionFlagsBits, ChannelType, EmbedBuilder } from 'discord.js';
import { MessageFlags } from 'discord-api-types/v10';
/**
 * tempvc module: temporary voice channel manager
 *
 * Admin commands (/vcadmin):
 *   - add <voice_channel> <category>
 *   - remove <voice_channel>
 *   - list
 *
 * User commands (/vc):
 *   Access Control:
 *     • invite <user>
 *     • kick <user>
 *     • role <role>
 *     • mode <whitelist|blacklist>
 *     • limit <0-99>
 *   Presets:
 *     • save <name>
 *     • restore <name>
 *     • reset
 *   Utilities:
 *     • rename <new_name>
 *     • info
 *     • delete
 *
 * PocketBase collections required:
 *   tempvc_masters (guildId, masterChannelId, categoryId)
 *   tempvc_sessions (guildId, masterChannelId, channelId, ownerId, roleId, mode)
 *   tempvc_presets  (guildId, userId, name, channelName, userLimit, roleId, invitedUserIds, mode)
 */

// Temporary Voice Channel module
// - /vcadmin: admin commands to add/remove/list spawn channels
// - /vc: user commands to manage own temp VC, presets save/restore

/**
 * Slash commands for vcadmin and vc
 */
export const commands = [
  // Administrator: manage spawn points
  {
    data: new SlashCommandBuilder()
      .setName('vcadmin')
      .setDescription('Configure temporary voice-channel spawn points (Admin only)')
      .setDefaultMemberPermissions(PermissionFlagsBits.Administrator)
      .setDMPermission(false)
      .addSubcommand(sub =>
        sub.setName('add')
          .setDescription('Add a spawn voice channel and its temp category')
          .addChannelOption(opt =>
            opt.setName('voice_channel')
               .setDescription('Voice channel to spawn from')
               .setRequired(true)
               .addChannelTypes(ChannelType.GuildVoice)
          )
          .addChannelOption(opt =>
            opt.setName('category')
               .setDescription('Category for new temp channels')
               .setRequired(true)
               .addChannelTypes(ChannelType.GuildCategory)
          )
      )
      .addSubcommand(sub =>
        sub.setName('remove')
          .setDescription('Remove a spawn voice channel')
          .addChannelOption(opt =>
            opt.setName('voice_channel')
               .setDescription('Voice channel to remove')
               .setRequired(true)
               .addChannelTypes(ChannelType.GuildVoice)
          )
      )
      .addSubcommand(sub =>
        sub.setName('list')
          .setDescription('List all spawn voice channels and categories')
      ),
    async execute(interaction, client) {
      const guildId = interaction.guildId;
      const sub = interaction.options.getSubcommand();
      // ensure in-guild
      if (!guildId) {
        return interaction.reply({ content: 'This command can only be used in a server.', flags: MessageFlags.Ephemeral });
      }
      // init memory map for this guild
      client.tempvc = client.tempvc || { masters: new Map(), sessions: new Map() };
      if (!client.tempvc.masters.has(guildId)) {
        client.tempvc.masters.set(guildId, new Map());
      }
      const guildMasters = client.tempvc.masters.get(guildId);
      try {
        if (sub === 'add') {
          const vc = interaction.options.getChannel('voice_channel', true);
          const cat = interaction.options.getChannel('category', true);
          // persist
          const existing = await client.pb.getFirst(
            'tempvc_masters',
            `guildId = "${guildId}" && masterChannelId = "${vc.id}"`
          );
          if (existing) {
            await client.pb.updateOne('tempvc_masters', existing.id, {
              guildId, masterChannelId: vc.id, categoryId: cat.id
            });
          } else {
            await client.pb.createOne('tempvc_masters', {
              guildId, masterChannelId: vc.id, categoryId: cat.id
            });
          }
          // update memory
          guildMasters.set(vc.id, cat.id);
          await interaction.reply({
            content: `Spawn channel <#${vc.id}> will now create temp VCs in <#${cat.id}>.`,
            flags: MessageFlags.Ephemeral
          });
        } else if (sub === 'remove') {
          const vc = interaction.options.getChannel('voice_channel', true);
          if (!guildMasters.has(vc.id)) {
            return interaction.reply({ content: 'That channel is not configured as a spawn point.', flags: MessageFlags.Ephemeral });
          }
          // remove from PB
          const existing = await client.pb.getFirst(
            'tempvc_masters',
            `guildId = "${guildId}" && masterChannelId = "${vc.id}"`
          );
          if (existing) {
            await client.pb.deleteOne('tempvc_masters', existing.id);
          }
          // update memory
          guildMasters.delete(vc.id);
          await interaction.reply({ content: `Removed spawn channel <#${vc.id}>.`, flags: MessageFlags.Ephemeral });
        } else if (sub === 'list') {
          if (guildMasters.size === 0) {
            return interaction.reply({ content: 'No spawn channels configured.', flags: MessageFlags.Ephemeral });
          }
          const lines = [];
          for (const [mId, cId] of guildMasters.entries()) {
            lines.push(`<#${mId}> → <#${cId}>`);
          }
          await interaction.reply({ content: '**Spawn channels:**\n' + lines.join('\n'), flags: MessageFlags.Ephemeral });
        }
      } catch (err) {
        client.logger.error(`[module:tempvc][vcadmin] ${err.message}`);
        await interaction.reply({ content: 'Operation failed, see logs.', flags: MessageFlags.Ephemeral });
      }
    }
  },
  // User: manage own temp VC and presets
  {
    data: new SlashCommandBuilder()
      .setName('vc')
      .setDescription('Manage your temporary voice channel')
      .setDMPermission(false)
      // Access Control
      .addSubcommand(sub =>
        sub.setName('invite')
           .setDescription('Invite a user to this channel')
           .addUserOption(opt => opt.setName('user').setDescription('User to invite').setRequired(true))
      )
      .addSubcommand(sub =>
        sub.setName('kick')
           .setDescription('Kick a user from this channel')
           .addUserOption(opt => opt.setName('user').setDescription('User to kick').setRequired(true))
      )
      .addSubcommand(sub =>
        sub.setName('role')
           .setDescription('Set role to allow/deny access')
           .addRoleOption(opt => opt.setName('role').setDescription('Role to allow/deny').setRequired(true))
      )
      .addSubcommand(sub =>
        sub.setName('mode')
           .setDescription('Switch role mode')
           .addStringOption(opt =>
             opt.setName('mode')
                .setDescription('Mode: whitelist or blacklist')
                .setRequired(true)
                .addChoices(
                  { name: 'whitelist', value: 'whitelist' },
                  { name: 'blacklist', value: 'blacklist' }
                )
           )
      )
      .addSubcommand(sub =>
        sub.setName('limit')
           .setDescription('Set user limit (0–99)')
           .addIntegerOption(opt => opt.setName('number').setDescription('Max users').setRequired(true))
      )
      // Presets
      .addSubcommand(sub =>
        sub.setName('save')
           .setDescription('Save current settings as a preset')
           .addStringOption(opt => opt.setName('name').setDescription('Preset name').setRequired(true).setAutocomplete(true))
      )
      .addSubcommand(sub =>
        sub.setName('restore')
           .setDescription('Restore settings from a preset')
           .addStringOption(opt => opt.setName('name').setDescription('Preset name').setRequired(true).setAutocomplete(true))
      )
      .addSubcommand(sub => sub.setName('reset').setDescription('Reset channel to default settings'))
      // Utilities
      .addSubcommand(sub => sub.setName('rename').setDescription('Rename this channel').addStringOption(opt => opt.setName('new_name').setDescription('New channel name').setRequired(true)))
      .addSubcommand(sub => sub.setName('info').setDescription('Show channel info'))
      .addSubcommand(sub => sub.setName('delete').setDescription('Delete this channel')),
    async execute(interaction, client) {
      const guild = interaction.guild;
      const member = interaction.member;
      const sub = interaction.options.getSubcommand();
      // must be in guild and in voice
      if (!guild || !member || !member.voice.channel) {
        return interaction.reply({ content: 'You must be in a temp voice channel to use this.', flags: MessageFlags.Ephemeral });
      }
      const voice = member.voice.channel;
      client.tempvc = client.tempvc || { masters: new Map(), sessions: new Map() };
      const sess = client.tempvc.sessions.get(voice.id);
      if (!sess) {
        return interaction.reply({ content: 'This is not one of my temporary channels.', flags: MessageFlags.Ephemeral });
      }
      if (sess.ownerId !== interaction.user.id) {
        return interaction.reply({ content: 'Only the room owner can do that.', flags: MessageFlags.Ephemeral });
      }
      try {
        if (sub === 'rename') {
          const name = interaction.options.getString('new_name', true);
          await voice.setName(name);
          await interaction.reply({ content: `Channel renamed to **${name}**.`, flags: MessageFlags.Ephemeral });
        } else if (sub === 'invite') {
          const u = interaction.options.getUser('user', true);
          // grant view and connect
          await voice.permissionOverwrites.edit(u.id, { ViewChannel: true, Connect: true });
          await interaction.reply({ content: `Invited <@${u.id}>.`, flags: MessageFlags.Ephemeral });
        } else if (sub === 'kick') {
          const u = interaction.options.getUser('user', true);
          const gm = await guild.members.fetch(u.id);
          // move them out if in this channel
          if (gm.voice.channelId === voice.id) {
            await gm.voice.setChannel(null);
          }
          // remove any previous invite allow
          try {
            await voice.permissionOverwrites.delete(u.id);
          } catch {}
          await interaction.reply({ content: `Kicked <@${u.id}>.`, flags: MessageFlags.Ephemeral });
        } else if (sub === 'limit') {
          let num = interaction.options.getInteger('number', true);
          // enforce range 0-99
          if (num < 0 || num > 99) {
            return interaction.reply({ content: 'User limit must be between 0 (no limit) and 99.', flags: MessageFlags.Ephemeral });
          }
          await voice.setUserLimit(num);
          await interaction.reply({ content: `User limit set to ${num}.`, flags: MessageFlags.Ephemeral });
        } else if (sub === 'role') {
          const newRole = interaction.options.getRole('role', true);
          const oldRoleId = sess.roleId;
          // remove old role overwrite if any
          if (oldRoleId && oldRoleId !== guild.roles.everyone.id) {
            await voice.permissionOverwrites.delete(oldRoleId).catch(() => {});
          }
          // selecting @everyone resets all
          if (newRole.id === guild.roles.everyone.id) {
            // clear all overwrites
            await voice.permissionOverwrites.set([
              { id: guild.roles.everyone.id, allow: [PermissionFlagsBits.Connect] },
              { id: sess.ownerId, allow: [PermissionFlagsBits.Connect, PermissionFlagsBits.MoveMembers, PermissionFlagsBits.ManageChannels] }
            ]);
            sess.roleId = '';
            await client.pb.updateOne('tempvc_sessions', sess.pbId, { roleId: '', mode: sess.mode });
            return interaction.reply({ content: '@everyone can now connect.', flags: MessageFlags.Ephemeral });
          }
          if (sess.mode === 'whitelist') {
            // whitelist: lock everyone, allow role
            await voice.permissionOverwrites.edit(guild.roles.everyone.id, { Connect: false });
            await voice.permissionOverwrites.edit(newRole.id, { Connect: true });
            sess.roleId = newRole.id;
            await client.pb.updateOne('tempvc_sessions', sess.pbId, { roleId: newRole.id, mode: sess.mode });
            await interaction.reply({ content: `Whitelisted role <@&${newRole.id}>.`, flags: MessageFlags.Ephemeral });
          } else {
            // blacklist: allow everyone, deny role
            await voice.permissionOverwrites.edit(guild.roles.everyone.id, { Connect: true });
            await voice.permissionOverwrites.edit(newRole.id, { Connect: false });
            sess.roleId = newRole.id;
            await client.pb.updateOne('tempvc_sessions', sess.pbId, { roleId: newRole.id, mode: sess.mode });
            await interaction.reply({ content: `Blacklisted role <@&${newRole.id}>.`, flags: MessageFlags.Ephemeral });
          }
        } else if (sub === 'delete') {
          await interaction.reply({ content: 'Deleting your channel...', flags: MessageFlags.Ephemeral });
          await client.pb.deleteOne('tempvc_sessions', sess.pbId);
          client.tempvc.sessions.delete(voice.id);
          await voice.delete('Owner deleted temp VC');
        } else if (sub === 'info') {
          const invites = voice.permissionOverwrites.cache
            .filter(po => po.allow.has(PermissionFlagsBits.Connect) && ![guild.roles.everyone.id, sess.roleId].includes(po.id))
            .map(po => `<@${po.id}>`);
          const everyoneId = guild.roles.everyone.id;
          const roleLine = (!sess.roleId || sess.roleId === everyoneId)
            ? '@everyone'
            : `<@&${sess.roleId}>`;
          const modeLine = sess.mode || 'whitelist';
          const lines = [
            `Owner: <@${sess.ownerId}>`,
            `Name: ${voice.name}`,
            `Role: ${roleLine} (${modeLine})`,
            `User limit: ${voice.userLimit}`,
            `Invites: ${invites.length ? invites.join(', ') : 'none'}`
          ];
          await interaction.reply({ content: lines.join('\n'), flags: MessageFlags.Ephemeral });
        } else if (sub === 'save') {
          const name = interaction.options.getString('name', true);
          // gather invites
          const invited = voice.permissionOverwrites.cache
            .filter(po => po.allow.has(PermissionFlagsBits.Connect) && ![guild.roles.everyone.id, sess.roleId].includes(po.id))
            .map(po => po.id);
          // upsert preset
          const existing = await client.pb.getFirst(
            'tempvc_presets',
            `guildId = "${guild.id}" && userId = "${interaction.user.id}" && name = "${name}"`
          );
          const data = {
            guildId: guild.id,
            userId: interaction.user.id,
            name,
            channelName: voice.name,
            userLimit: voice.userLimit,
            roleId: sess.roleId || '',
            invitedUserIds: invited,
            mode: sess.mode || 'whitelist'
          };
          if (existing) {
            await client.pb.updateOne('tempvc_presets', existing.id, data);
          } else {
            await client.pb.createOne('tempvc_presets', data);
          }
          await interaction.reply({ content: `Preset **${name}** saved.`, flags: MessageFlags.Ephemeral });
        } else if (sub === 'reset') {
          // reset channel to default parameters
          const owner = interaction.member;
          const display = owner.displayName || owner.user.username;
          const defaultName = `TempVC: ${display}`;
          await voice.setName(defaultName);
          await voice.setUserLimit(0);
          // clear all overwrites: allow everyone, owner elevated perms
          await voice.permissionOverwrites.set([
            { id: guild.roles.everyone.id, allow: [PermissionFlagsBits.ViewChannel, PermissionFlagsBits.Connect] },
            { id: sess.ownerId, allow: [
                PermissionFlagsBits.ViewChannel,
                PermissionFlagsBits.Connect,
                PermissionFlagsBits.MoveMembers,
                PermissionFlagsBits.ManageChannels,
                PermissionFlagsBits.PrioritySpeaker,
                PermissionFlagsBits.MuteMembers,
                PermissionFlagsBits.DeafenMembers
              ]
            }
          ]);
          sess.roleId = guild.roles.everyone.id;
          await client.pb.updateOne('tempvc_sessions', sess.pbId, { roleId: guild.roles.everyone.id, invitedUserIds: [] });
          await interaction.reply({ content: 'Channel has been reset to default settings.', flags: MessageFlags.Ephemeral });
        } else if (sub === 'mode') {
          const mode = interaction.options.getString('mode', true);
          sess.mode = mode;
          // apply mode overwrites
          if (mode === 'whitelist') {
            // only allow whitelisted role
            await voice.permissionOverwrites.edit(guild.roles.everyone.id, { ViewChannel: false });
            if (sess.roleId) await voice.permissionOverwrites.edit(sess.roleId, { ViewChannel: true });
          } else {
            // blacklist: allow everyone, then deny the specified role
            await voice.permissionOverwrites.edit(guild.roles.everyone.id, { ViewChannel: true });
            if (sess.roleId) await voice.permissionOverwrites.edit(sess.roleId, { ViewChannel: false });
          }
          // persist mode
          await client.pb.updateOne('tempvc_sessions', sess.pbId, { mode });
          await interaction.reply({ content: `Channel mode set to **${mode}**.`, flags: MessageFlags.Ephemeral });
        } else if (sub === 'restore') {
          const name = interaction.options.getString('name', true);
          const preset = await client.pb.getFirst(
            'tempvc_presets',
            `guildId = "${guild.id}" && userId = "${interaction.user.id}" && name = "${name}"`
          );
          if (!preset) {
            return interaction.reply({ content: `Preset **${name}** not found.`, flags: MessageFlags.Ephemeral });
          }
          // apply settings
          await voice.setName(preset.channelName);
          await voice.setUserLimit(preset.userLimit);
          // apply mode-based permissions
          const mode = preset.mode || 'whitelist';
          sess.mode = mode;
          // adjust view/connect for @everyone
          await voice.permissionOverwrites.edit(
            guild.roles.everyone.id,
            { ViewChannel: mode === 'blacklist', Connect: mode === 'blacklist' }
          );
          // adjust view/connect for role
          if (preset.roleId) {
            await voice.permissionOverwrites.edit(
              preset.roleId,
              { ViewChannel: mode === 'whitelist', Connect: mode === 'whitelist' }
            );
          }
          // invite users explicitly
          for (const uid of preset.invitedUserIds || []) {
            await voice.permissionOverwrites.edit(uid, { Connect: true }).catch(() => {});
          }
          // persist session changes
          await client.pb.updateOne(
            'tempvc_sessions',
            sess.pbId,
            { roleId: preset.roleId || '', mode }
          );
          sess.roleId = preset.roleId || '';
          await interaction.reply({ content: `Preset **${name}** restored (mode: ${mode}).`, flags: MessageFlags.Ephemeral });
        }
      } catch (err) {
        client.logger.error(`[module:tempvc][vc] ${err.message}`);
        await interaction.reply({ content: 'Operation failed, see logs.', flags: MessageFlags.Ephemeral });
      }
    }
  }
];

/**
 * Initialize module: load PB state and hook events
 */
export async function init(client) {
  // tempvc state: masters per guild, sessions map
  client.tempvc = { masters: new Map(), sessions: new Map() };
  // hook voice state updates
  client.on('voiceStateUpdate', async (oldState, newState) => {
    client.logger.debug(
      `[module:tempvc] voiceStateUpdate: user=${newState.id} oldChannel=${oldState.channelId} newChannel=${newState.channelId}`
    );
    // cleanup on leave
    if (oldState.channelId && oldState.channelId !== newState.channelId) {
      const sess = client.tempvc.sessions.get(oldState.channelId);
      const ch = oldState.guild.channels.cache.get(oldState.channelId);
      if (sess && (!ch || ch.members.size === 0)) {
        await client.pb.deleteOne('tempvc_sessions', sess.pbId).catch(()=>{});
        client.tempvc.sessions.delete(oldState.channelId);
        await ch?.delete('Empty temp VC cleanup').catch(()=>{});
      }
    }
    // spawn on join
    if (newState.channelId && newState.channelId !== oldState.channelId) {
      const masters = client.tempvc.masters.get(newState.guild.id) || new Map();
      client.logger.debug(
        `[module:tempvc] Guild ${newState.guild.id} masters: ${[...masters.keys()].join(',')}`
      );
      client.logger.debug(
        `[module:tempvc] Checking spawn for channel ${newState.channelId}: ${masters.has(newState.channelId)}`
      );
      if (masters.has(newState.channelId)) {
        const catId = masters.get(newState.channelId);
        const owner = newState.member;
        const guild = newState.guild;
        // default channel name
        const displayName = owner.displayName || owner.user.username;
        const name = `TempVC: ${displayName}`;
        // create channel
        // create voice channel, default permissions inherited from category (allow everyone)
        // create voice channel; default allow everyone view/join, owner elevated perms
        const ch = await guild.channels.create({
          name,
          type: ChannelType.GuildVoice,
          parent: catId,
          permissionOverwrites: [
            { id: guild.roles.everyone.id, allow: [PermissionFlagsBits.ViewChannel, PermissionFlagsBits.Connect] },
            { id: owner.id, allow: [
                PermissionFlagsBits.ViewChannel,
                PermissionFlagsBits.Connect,
                PermissionFlagsBits.MoveMembers,
                PermissionFlagsBits.ManageChannels,
                PermissionFlagsBits.PrioritySpeaker,
                PermissionFlagsBits.MuteMembers,
                PermissionFlagsBits.DeafenMembers
              ]
            }
          ]
        });
        // move member
        await owner.voice.setChannel(ch);
        // persist session
        const rec = await client.pb.createOne('tempvc_sessions', {
          guildId: guild.id,
          masterChannelId: newState.channelId,
          channelId: ch.id,
          ownerId: owner.id,
          roleId: guild.roles.everyone.id,
          mode: 'whitelist'
        });
        client.tempvc.sessions.set(ch.id, {
          pbId: rec.id,
          guildId: guild.id,
          masterChannelId: newState.channelId,
          ownerId: owner.id,
          roleId: guild.roles.everyone.id,
          mode: 'whitelist'
        });
        // send instructions to the voice channel itself
        try {
          const helpEmbed = new EmbedBuilder()
            .setTitle('👋 Welcome to Your Temporary Voice Channel!')
            .setColor('Blue')
            .addFields(
              {
                name: 'Access Control',
                value:
                  '• /vc invite <user> — Invite a user to this channel\n' +
                  '• /vc kick <user> — Kick a user from this channel\n' +
                  '• /vc role <role> — Set a role to allow/deny access\n' +
                  '• /vc mode <whitelist|blacklist> — Switch role mode\n' +
                  '• /vc limit <number> — Set user limit (0–99)',
              },
              {
                name: 'Presets',
                value:
                  '• /vc save <name> — Save current settings as a preset\n' +
                  '• /vc restore <name> — Restore settings from a preset\n' +
                  '• /vc reset — Reset channel to default settings',
              },
              {
                name: 'Utilities',
                value:
                  '• /vc rename <new_name> — Rename this channel\n' +
                  '• /vc info — Show channel info\n' +
                  '• /vc delete — Delete this channel',
              }
            );
          await ch.send({ embeds: [helpEmbed] });
        } catch (err) {
          client.logger.error(`[module:tempvc] Error sending help message: ${err.message}`);
        }
      }
    }
  });
  // autocomplete for /vc save & restore presets
  client.on('interactionCreate', async interaction => {
    if (!interaction.isAutocomplete() || interaction.commandName !== 'vc') return;
    const sub = interaction.options.getSubcommand(false);
    if (!['save', 'restore'].includes(sub)) return;
    const focused = interaction.options.getFocused(true);
    if (focused.name !== 'name') return;
    const guildId = interaction.guildId;
    const userId = interaction.user.id;
    try {
      const recs = await client.pb.getAll('tempvc_presets', {
        filter: `guildId = "${guildId}" && userId = "${userId}"`
      });
      const choices = recs
        .filter(r => r.name.toLowerCase().startsWith(focused.value.toLowerCase()))
        .slice(0, 25)
        .map(r => ({ name: r.name, value: r.name }));
      await interaction.respond(choices);
    } catch (err) {
      client.logger.error(`[module:tempvc][autocomplete] ${err.message}`);
      await interaction.respond([]);
    }
  });
  // On ready: load masters/sessions, then check required permissions
  client.on('ready', async () => {
    // Load persistent spawn masters and active sessions
    for (const guild of client.guilds.cache.values()) {
      const gid = guild.id;
      try {
        const masters = await client.pb.getAll('tempvc_masters', { filter: `guildId = "${gid}"` }); // guildId = "X" works, but escaped quotes are allowed
        const gm = new Map();
        for (const rec of masters) gm.set(rec.masterChannelId, rec.categoryId);
        client.tempvc.masters.set(gid, gm);
        client.logger.info(`[module:tempvc] Loaded spawn masters for guild ${gid}: ${[...gm.keys()].join(', ')}`);
      } catch (err) {
        client.logger.error(`[module:tempvc] Error loading masters for guild ${gid}: ${err.message}`);
      }
      try {
        const sessions = await client.pb.getAll('tempvc_sessions', { filter: `guildId = "${gid}"` });
        for (const rec of sessions) {
          const ch = guild.channels.cache.get(rec.channelId);
          if (ch && ch.isVoiceBased()) {
            client.tempvc.sessions.set(rec.channelId, {
              pbId: rec.id,
              guildId: gid,
              masterChannelId: rec.masterChannelId,
              ownerId: rec.ownerId,
              roleId: rec.roleId || '',
              mode: rec.mode || 'whitelist'
            });
            if (rec.roleId) await ch.permissionOverwrites.edit(rec.roleId, { Connect: true }).catch(()=>{});
            await ch.permissionOverwrites.edit(rec.ownerId, { Connect: true, ManageChannels: true, MoveMembers: true });
          } else {
            await client.pb.deleteOne('tempvc_sessions', rec.id).catch(()=>{});
          }
        }
      } catch (err) {
        client.logger.error(`[module:tempvc] Error loading sessions for guild ${gid}: ${err.message}`);
      }
    }
    // Verify necessary permissions
    for (const guild of client.guilds.cache.values()) {
      // get bot's member in this guild
      let me = guild.members.me;
      if (!me) {
        try { me = await guild.members.fetch(client.user.id); } catch { /* ignore */ }
      }
      if (!me) continue;
      const missing = [];
      if (!me.permissions.has(PermissionFlagsBits.ManageChannels)) missing.push('ManageChannels');
      if (!me.permissions.has(PermissionFlagsBits.MoveMembers))    missing.push('MoveMembers');
      if (missing.length) {
        client.logger.warn(
          `[module:tempvc] Missing permissions in guild ${guild.id} (${guild.name}): ${missing.join(', ')}`
        );
      }
    }
  });
  client.logger.info('[module:tempvc] Module initialized');
}