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

module.exports = {
  data: new SlashCommandBuilder()
    .setName('verify')
    .setDescription('Link your Discord account to your AeThex account'),

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

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

      if (existingLink) {
        const embed = new EmbedBuilder()
          .setColor(0x00FF00)
          .setTitle('✅ Already Linked')
          .setDescription(`Your Discord account is already linked to AeThex (User ID: ${existingLink.user_id})`);
        
        return await interaction.editReply({ embeds: [embed] });
      }

      // Generate verification code
      const verificationCode = Math.random().toString(36).substring(2, 8).toUpperCase();
      const expiresAt = new Date(Date.now() + 15 * 60 * 1000); // 15 minutes

      // Store verification code
      await supabase.from('discord_verifications').insert({
        discord_id: interaction.user.id,
        verification_code: verificationCode,
        expires_at: expiresAt.toISOString(),
      });

      const verifyUrl = `https://aethex.dev/discord-verify?code=${verificationCode}`;

      const embed = new EmbedBuilder()
        .setColor(0x7289DA)
        .setTitle('🔗 Link Your AeThex Account')
        .setDescription('Click the button below to link your Discord account to AeThex.')
        .addFields(
          { name: '⏱️ Expires In', value: '15 minutes' },
          { name: '📝 Verification Code', value: `\`${verificationCode}\`` },
        )
        .setFooter({ text: 'Your security code will expire in 15 minutes' });

      const row = new ActionRowBuilder().addComponents(
        new ButtonBuilder()
          .setLabel('Link Account')
          .setStyle(ButtonStyle.Link)
          .setURL(verifyUrl),
      );

      await interaction.editReply({ embeds: [embed], components: [row] });
    } catch (error) {
      console.error('Verify command error:', error);
      const embed = new EmbedBuilder()
        .setColor(0xFF0000)
        .setTitle('❌ Error')
        .setDescription('Failed to generate verification code. Please try again.');
      
      await interaction.editReply({ embeds: [embed] });
    }
  },
};