const { SlashCommandBuilder, EmbedBuilder } = require('discord.js');

module.exports = {
  name: 'help',
  description: 'List available bot commands and what they do.',
  enabled: true,
  builder: new SlashCommandBuilder()
    .setName('help')
    .setDescription('List available bot commands and what they do.')
    .addStringOption(opt => opt.setName('command').setDescription('Get detailed help for a specific command').setRequired(false)),
  async execute(interaction) {
    try {
      const api = require('../api');
      // fetch authoritative commands list for this guild
      const commands = await api.getCommands(interaction.guildId) || [];

      const target = interaction.options.getString('command');
      if (target) {
        const found = commands.find(c => c.name.toLowerCase() === target.toLowerCase());
        if (!found) {
          return await interaction.reply({ content: `No command named "/${target}" found.`, flags: 64 });
        }
        const embed = new EmbedBuilder()
          .setTitle(`/${found.name} — ${found.locked ? 'Locked' : (found.enabled ? 'Enabled' : 'Disabled')}`)
          .setDescription(found.description || 'No description available.')
          .setColor(found.enabled ? 0x22c55e : 0xe11d48)
          .addFields(
            { name: 'Usage', value: `/${found.name} ${(found.usage || '').trim() || ''}` },
            { name: 'Status', value: found.locked ? 'Locked (cannot be toggled)' : (found.enabled ? 'Enabled' : 'Disabled'), inline: true },
            { name: 'Has Slash Builder', value: found.hasSlashBuilder ? 'Yes' : 'No', inline: true }
          )
          .setFooter({ text: 'Use /help <command> to view detailed info about a command.' });
        return await interaction.reply({ embeds: [embed], flags: 64 });
      }

      // Build a neat embed listing commands grouped by status
      const embed = new EmbedBuilder()
        .setTitle('Available Commands')
        .setDescription('Use `/help <command>` to get detailed info on a specific command.')
        .setColor(0x5865f2);

      // Sort commands: enabled first, then disabled, locked last
      const sorted = commands.slice().sort((a, b) => {
        const ka = a.locked ? 2 : (a.enabled ? 0 : 1);
        const kb = b.locked ? 2 : (b.enabled ? 0 : 1);
        if (ka !== kb) return ka - kb;
        return a.name.localeCompare(b.name);
      });

      // Build a concise field list (max 25 fields in Discord embed)
      const fields = [];
      for (const cmd of sorted) {
        const status = cmd.locked ? '🔒 Locked' : (cmd.enabled ? '✅ Enabled' : '⛔ Disabled');
        fields.push({ name: `/${cmd.name}`, value: `${cmd.description || 'No description.'}\n${status}`, inline: false });
        if (fields.length >= 24) break;
      }

      if (fields.length > 0) embed.addFields(fields);
      else embed.setDescription('No commands available.');

      return await interaction.reply({ embeds: [embed], flags: 64 });
    } catch (e) {
      console.error('Error in help command:', e && e.message ? e.message : e);
      return await interaction.reply({ content: 'Failed to retrieve commands. Try again later.', flags: 64 });
    }
  },
};