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

const REALMS = [
  { value: 'labs', label: '🧪 Labs', description: 'Research & Development' },
  { value: 'gameforge', label: '🎮 GameForge', description: 'Game Development' },
  { value: 'corp', label: '💼 Corp', description: 'Enterprise Solutions' },
  { value: 'foundation', label: '🤝 Foundation', description: 'Community & Education' },
  { value: 'devlink', label: '💻 Dev-Link', description: 'Professional Networking' },
];

module.exports = {
  data: new SlashCommandBuilder()
    .setName('set-realm')
    .setDescription('Set your primary AeThex realm/arm'),

  async execute(interaction, supabase) {
    await interaction.deferReply({ ephemeral: true });

    try {
      const { data: link } = await supabase
        .from('discord_links')
        .select('user_id, primary_arm')
        .eq('discord_id', interaction.user.id)
        .single();

      if (!link) {
        const embed = new EmbedBuilder()
          .setColor(0xFF6B6B)
          .setTitle('❌ Not Linked')
          .setDescription('You must link your Discord account to AeThex first.\nUse `/verify` to get started.');
        
        return await interaction.editReply({ embeds: [embed] });
      }

      const select = new StringSelectMenuBuilder()
        .setCustomId('select_realm')
        .setPlaceholder('Choose your primary realm')
        .addOptions(
          REALMS.map(realm => ({
            label: realm.label,
            description: realm.description,
            value: realm.value,
            default: realm.value === link.primary_arm,
          })),
        );

      const row = new ActionRowBuilder().addComponents(select);

      const embed = new EmbedBuilder()
        .setColor(0x7289DA)
        .setTitle('⚔️ Choose Your Realm')
        .setDescription('Select your primary AeThex realm. This determines your main Discord role.')
        .addFields(
          { name: 'Current Realm', value: link.primary_arm || 'Not set' },
        );

      await interaction.editReply({ embeds: [embed], components: [row] });

      const filter = i => i.user.id === interaction.user.id && i.customId === 'select_realm';
      const collector = interaction.channel.createMessageComponentCollector({ filter, time: 60000 });

      collector.on('collect', async i => {
        const selectedRealm = i.values[0];

        await supabase
          .from('discord_links')
          .update({ primary_arm: selectedRealm })
          .eq('discord_id', interaction.user.id);

        const realm = REALMS.find(r => r.value === selectedRealm);

        const confirmEmbed = new EmbedBuilder()
          .setColor(0x00FF00)
          .setTitle('✅ Realm Set')
          .setDescription(`Your primary realm is now **${realm.label}**\n\nYou'll be assigned the corresponding Discord role.`);

        await i.update({ embeds: [confirmEmbed], components: [] });
      });

      collector.on('end', collected => {
        if (collected.size === 0) {
          interaction.editReply({ content: 'Realm selection timed out.', components: [] });
        }
      });
    } catch (error) {
      console.error('Set-realm command error:', error);
      const embed = new EmbedBuilder()
        .setColor(0xFF0000)
        .setTitle('❌ Error')
        .setDescription('Failed to update realm. Please try again.');
      
      await interaction.editReply({ embeds: [embed] });
    }
  },
};