const {
  SlashCommandBuilder,
  PermissionFlagsBits,
  ChannelType,
  EmbedBuilder,
  MessageFlags
} = require("discord.js");

module.exports = {
  data: new SlashCommandBuilder()
    .setName("ticket")
    .setDescription("Ticket system commands")
    .addSubcommand(sub =>
      sub
        .setName("open")
        .setDescription("Open a support ticket")
    )
    .addSubcommand(sub =>
      sub
        .setName("close")
        .setDescription("Close the current ticket")
    ),

  async execute(interaction) {
    const sub = interaction.options.getSubcommand();

    // === /ticket open ===
    if (sub === "open") {
      const existing = interaction.guild.channels.cache.find(
        c => c.name === `ticket-${interaction.user.id}`
      );

      if (existing) {
        return interaction.reply({
          content: `❌ You already have an open ticket: ${existing}`,
          flags: MessageFlags.Ephemeral
        });
      }

      const ticketChannel = await interaction.guild.channels.create({
        name: `ticket-${interaction.user.id}`,
        type: ChannelType.GuildText,
        permissionOverwrites: [
          {
            id: interaction.guild.id, 
            deny: [PermissionFlagsBits.ViewChannel]
          },
          {
            id: interaction.user.id,
            allow: [
              PermissionFlagsBits.ViewChannel,
              PermissionFlagsBits.SendMessages,
              PermissionFlagsBits.ReadMessageHistory
            ]
          },
          {
            id: interaction.guild.roles.everyone, 
            deny: [PermissionFlagsBits.ViewChannel]
          }
        ]
      });

      const embed = new EmbedBuilder()
        .setColor("Blue")
        .setTitle("🎟️ New Ticket Opened")
        .setDescription(
          `Hello ${interaction.user}, a staff member will be with you shortly.\n\nUse \`/ticket close\` when your issue is resolved.`
        )
        .setTimestamp();

      await ticketChannel.send({ content: `<@&STAFF_ROLE_ID>`, embeds: [embed] });

      await interaction.reply({
        content: `✅ Your ticket has been created: ${ticketChannel}`,
        flags: MessageFlags.Ephemeral
      });
    }

    // === /ticket close ===
    else if (sub === "close") {
      if (!interaction.channel.name.startsWith("ticket-")) {
        return interaction.reply({
          content: "❌ This is not a ticket channel.",
          flags: MessageFlags.Ephemeral
        });
      }

      await interaction.reply("🛑 Closing ticket in 5 seconds...");
      setTimeout(() => {
        interaction.channel.delete().catch(() => {});
      }, 5000);
    }
  }
};