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

module.exports = {
  data: new SlashCommandBuilder()
    .setName('ticket')
    .setDescription('Ticket management system')
    .addSubcommand(subcommand =>
      subcommand
        .setName('create')
        .setDescription('Create a new support ticket')
        .addStringOption(option =>
          option.setName('reason')
            .setDescription('Brief reason for opening this ticket')
            .setRequired(true)
        )
    )
    .addSubcommand(subcommand =>
      subcommand
        .setName('close')
        .setDescription('Close the current ticket')
    ),
  
  async execute(interaction, supabase, client) {
    const subcommand = interaction.options.getSubcommand();
    
    if (subcommand === 'create') {
      const reason = interaction.options.getString('reason');
      const guild = interaction.guild;
      const user = interaction.user;
      
      const existingTicket = client.activeTickets.get(user.id);
      if (existingTicket) {
        return interaction.reply({
          content: `You already have an open ticket: <#${existingTicket}>`,
          ephemeral: true,
        });
      }
      
      try {
        const ticketChannel = await guild.channels.create({
          name: `ticket-${user.username}`,
          type: ChannelType.GuildText,
          permissionOverwrites: [
            {
              id: guild.id,
              deny: [PermissionFlagsBits.ViewChannel],
            },
            {
              id: user.id,
              allow: [PermissionFlagsBits.ViewChannel, PermissionFlagsBits.SendMessages],
            },
            {
              id: client.user.id,
              allow: [PermissionFlagsBits.ViewChannel, PermissionFlagsBits.SendMessages, PermissionFlagsBits.ManageChannels],
            },
          ],
        });
        
        client.activeTickets.set(user.id, ticketChannel.id);
        
        const closeButton = new ActionRowBuilder()
          .addComponents(
            new ButtonBuilder()
              .setCustomId(`ticket_close_${ticketChannel.id}`)
              .setLabel('Close Ticket')
              .setStyle(ButtonStyle.Danger)
          );
        
        const ticketEmbed = new EmbedBuilder()
          .setColor(0x7c3aed)
          .setTitle('Support Ticket')
          .setDescription(`Ticket created by ${user}`)
          .addFields(
            { name: 'Reason', value: reason },
            { name: 'User ID', value: user.id, inline: true },
            { name: 'Created', value: `<t:${Math.floor(Date.now() / 1000)}:F>`, inline: true }
          )
          .setFooter({ text: 'A staff member will assist you shortly.' });
        
        await ticketChannel.send({ embeds: [ticketEmbed], components: [closeButton] });
        
        await interaction.reply({
          content: `Ticket created: ${ticketChannel}`,
          ephemeral: true,
        });
        
        client.sendAlert(`New ticket opened by ${user.tag}: ${reason}`);
        
      } catch (error) {
        console.error('[Ticket] Create error:', error);
        await interaction.reply({
          content: 'Failed to create ticket. Please try again.',
          ephemeral: true,
        });
      }
    }
    
    if (subcommand === 'close') {
      const channel = interaction.channel;
      
      if (!channel.name.startsWith('ticket-')) {
        return interaction.reply({
          content: 'This command can only be used in ticket channels.',
          ephemeral: true,
        });
      }
      
      const userId = [...client.activeTickets.entries()].find(([k, v]) => v === channel.id)?.[0];
      if (userId) {
        client.activeTickets.delete(userId);
      }
      
      await interaction.reply({
        content: 'Closing ticket in 5 seconds...',
      });
      
      client.sendAlert(`Ticket ${channel.name} closed by ${interaction.user.tag}`);
      
      setTimeout(async () => {
        try {
          await channel.delete();
        } catch (err) {
          console.error('[Ticket] Delete error:', err);
        }
      }, 5000);
    }
  },
};