const { SlashCommandBuilder, EmbedBuilder } = require("discord.js");
const {
  saveGuildBackup,
  listUserBackups,
  deleteUserBackup,
  restoreUserBackup,
  getBackupInfo
} = require("../../utils/backupManager.js");

module.exports = {
  data: new SlashCommandBuilder()
    .setName("backup")
    .setDescription("📦 Gère vos sauvegardes personnelles du serveur")
    .addSubcommand(sub => sub.setName("create").setDescription("💾 Crée une nouvelle sauvegarde"))
    .addSubcommand(sub => sub.setName("list").setDescription("📜 Affiche vos sauvegardes"))
    .addSubcommand(sub => sub.setName("load")
      .setDescription("🔁 Restaure une sauvegarde")
      .addStringOption(opt => opt.setName("id").setDescription("ID de la sauvegarde").setRequired(true)))
    .addSubcommand(sub => sub.setName("delete")
      .setDescription("🗑️ Supprime une sauvegarde")
      .addStringOption(opt => opt.setName("id").setDescription("ID de la sauvegarde").setRequired(true)))
    .addSubcommand(sub => sub.setName("info")
      .setDescription("ℹ️ Affiche les informations d'une sauvegarde")
      .addStringOption(opt => opt.setName("id").setDescription("ID de la sauvegarde").setRequired(true))),
  
  async execute(interaction) {
    const sub = interaction.options.getSubcommand();
    const userId = interaction.user.id;
    const guild = interaction.guild;

    if (sub === "create") {
      await interaction.deferReply({ ephemeral: true });
      try {
        const result = await saveGuildBackup(guild, userId);
        const embed = new EmbedBuilder()
          .setColor("#4ECDC4")
          .setTitle("💾 Sauvegarde créée avec succès !")
          .setDescription(`Serveur : **${guild.name}**`)
          .addFields(
            { name: "🆔 ID de sauvegarde", value: `\`${result.backupId}\``, inline: false },
            { name: "📜 Rôles sauvegardés", value: `${result.rolesCount}`, inline: true },
            { name: "📺 Salons sauvegardés", value: `${result.channelsCount}`, inline: true }
          )
          .setFooter({ text: "Sauvegardes personnelles - Maximum 10" })
          .setTimestamp();
        await interaction.editReply({ embeds: [embed] });
      } catch (err) {
        console.error(err);
        await interaction.editReply(`❌ ${err.message}`);
      }
    }

    else if (sub === "list") {
      await interaction.deferReply({ ephemeral: true });
      try {
        const backups = await listUserBackups(userId);
        if (!backups.length) return interaction.editReply("📭 Vous n’avez aucune sauvegarde.");

        const embed = new EmbedBuilder()
          .setColor("#FFD700")
          .setTitle(`📜 Vos sauvegardes (${backups.length}/10)`)
          .setDescription(backups.map(b =>
            `🆔 **${b.backup_id}**\nServeur : **${b.guild_name}**\n🕒 <t:${Math.floor(new Date(b.created_at).getTime()/1000)}:F>`
          ).join("\n━━━━━━━━━━━━━━\n"))
          .setFooter({ text: "Utilisez /backup load ou /backup delete" });
        await interaction.editReply({ embeds: [embed] });
      } catch (err) {
        console.error(err);
        await interaction.editReply(`❌ ${err.message}`);
      }
    }

    else if (sub === "load") {
      await interaction.deferReply({ ephemeral: true });
      const backupId = interaction.options.getString("id");
      try {
        await restoreUserBackup(guild, userId, backupId);
        await interaction.editReply(`✅ Sauvegarde **${backupId}** restaurée avec succès !`);
      } catch (err) {
        console.error(err);
        await interaction.editReply(`❌ ${err.message}`);
      }
    }

    else if (sub === "delete") {
      await interaction.deferReply({ ephemeral: true });
      const backupId = interaction.options.getString("id");
      try {
        const deleted = await deleteUserBackup(userId, backupId);
        if (!deleted) return interaction.editReply("⚠️ Sauvegarde introuvable.");
        await interaction.editReply(`🗑️ Sauvegarde **${backupId}** supprimée.`);
      } catch (err) {
        console.error(err);
        await interaction.editReply("❌ Une erreur est survenue lors de la suppression.");
      }
    }

    else if (sub === "info") {
      await interaction.deferReply({ ephemeral: true });
      const backupId = interaction.options.getString("id");
      try {
        const info = await getBackupInfo(backupId, userId);
        const embed = new EmbedBuilder()
          .setColor("#00FF00")
          .setTitle(`ℹ️ Infos sauvegarde ${backupId}`)
          .addFields(
            { name: "📜 Rôles", value: info.roles.length ? info.roles.join("\n") : "Aucun rôle", inline: true },
            { name: "📁 Catégories", value: info.categories.length ? info.categories.join("\n") : "Aucune catégorie", inline: true },
            { name: "🆔 ID", value: backupId, inline: false }
          )
          .setFooter({ text: "Informations sur la sauvegarde" })
          .setTimestamp();
        await interaction.editReply({ embeds: [embed] });
      } catch (err) {
        console.error(err);
        await interaction.editReply(`❌ ${err.message}`);
      }
    }
  }
};