import { EmbedBuilder, SlashCommandBuilder } from "discord.js";
import { formatText } from "../util/helpers.js";

export default {
  name: "changelog",
  description: "Zeigt die letzten Update-Beschreibungen eines Plugins an",
  aliases: ["cl"],
  guild: ["all"],
  nsfw: false,
  user_permissions: [],
  bot_permissions: [],
  args_required: 1,
  args_usage: "[ressourcen_id] [anzahl]  Beispiel: vn!changelog 72678 5",
  cooldown: 5,

  data: new SlashCommandBuilder()
    .setName("changelog")
    .setDescription("Zeigt die letzten Updates eines Plugins")
    .addStringOption((opt) =>
      opt.setName("ressourcen_id").setDescription("Spiget Ressourcen-ID").setRequired(true)
    )
    .addIntegerOption((opt) =>
      opt
        .setName("anzahl")
        .setDescription("Anzahl der Updates (1–10, Standard: 3)")
        .setMinValue(1)
        .setMaxValue(10)
        .setRequired(false)
    ),

  async execute(client, ctx, args) {
    const resourceID = ctx.isSlash
      ? ctx.interaction.options.getString("ressourcen_id")
      : args[0];

    let count = ctx.isSlash
      ? (ctx.interaction.options.getInteger("anzahl") ?? 3)
      : (parseInt(args[1], 10) || 3);

    count = Math.min(Math.max(count, 1), 10);

    // Fetch resource name
    let resourceName = resourceID;
    try {
      const resInfo = await fetch(`https://api.spiget.org/v2/resources/${resourceID}`);
      if (resInfo.ok) {
        const data = await resInfo.json();
        resourceName = data.name ?? resourceID;
      }
    } catch { /* ignore */ }

    // Fetch updates list
    let updates;
    try {
      const res = await fetch(
        `https://api.spiget.org/v2/resources/${resourceID}/updates?size=${count}&sort=-date`
      );
      if (!res.ok) throw new Error(`HTTP ${res.status}`);
      updates = await res.json();
    } catch (e) {
      client.logger.error(e);
      return ctx.reply("Update-Verlauf konnte nicht abgerufen werden. Bitte versuche es erneut.");
    }

    if (!Array.isArray(updates) || updates.length === 0) {
      return ctx.reply(`Für Ressource \`${resourceID}\` wurden keine Updates gefunden.`);
    }

    const fields = updates.map((u, i) => {
      const date  = new Date(u.date * 1000).toLocaleDateString("de-DE");
      let   desc  = formatText(Buffer.from(u.description, "base64").toString("utf8"));
      if (desc.length > 300) desc = desc.substring(0, 297) + "...";
      return {
        name:   `${i + 1}. ${u.title ?? "Update"} – v${u.likes ?? ""} (${date})`,
        value:  desc || "Keine Beschreibung.",
        inline: false,
      };
    });

    const changelogEmbed = new EmbedBuilder()
      .setColor(ctx.guild.members.me.displayHexColor)
      .setTitle(`📋 Changelog: ${resourceName}`)
      .setDescription(`Die letzten **${updates.length}** Updates:`)
      .addFields(fields)
      .setFooter({ text: `Ressource ID: ${resourceID}` })
      .setTimestamp();

    return ctx.reply({ embeds: [changelogEmbed] });
  },
};