const fs = require("fs-extra");
const path = require("path");
const https = require("https");

module.exports = {
  config: {
    name: "help",
    aliases: ["menu", "commands"],
    version: "5.0",
    author: "ajmaul",
    shortDescription: "𝙎𝙝𝙤𝙬 𝙖𝙡𝙡 𝙘𝙤𝙢𝙢𝙖𝙣𝙙𝙨",
    longDescription: "𝘿𝙞𝙨𝙥𝙡𝙖𝙮𝙨 𝙖 𝙗𝙚𝙖𝙪𝙩𝙞𝙛𝙪𝙡 𝙛𝙤𝙣𝙩-𝙨𝙩𝙮𝙡𝙚𝙙 𝙘𝙖𝙩𝙚𝙜𝙤𝙧𝙞𝙯𝙚𝙙 𝙘𝙤𝙢𝙢𝙖𝙣𝙙 𝙢𝙚𝙣𝙪.",
    category: "system",
    guide: "{pn}help [command name]"
  },

  onStart: async function ({ message, args, prefix }) {
    const allCommands = global.GoatBot.commands;
    const categories = {};

    const fontMap = {
      A: "𝙰", B: "𝙱", C: "𝙲", D: "𝙳", E: "𝙴", F: "𝙵", G: "𝙶", H: "𝙷", I: "𝙸", J: "𝙹",
      K: "𝙺", L: "𝙻", M: "𝙼", N: "𝙽", O: "𝙾", P: "𝙿", Q: "𝚀", R: "𝚁", S: "𝚂",
      T: "𝚃", U: "𝚄", V: "𝚅", W: "𝚆", X: "𝚇", Y: "𝚈", Z: "𝚉",
      a: "𝚊", b: "𝚋", c: "𝚌", d: "𝚍", e: "𝚎", f: "𝚏", g: "𝚐", h: "𝚑", i: "𝚒", j: "𝚓",
      k: "𝚔", l: "𝚕", m: "𝚖", n: "𝚗", o: "𝚘", p: "𝚙", q: "𝚚", r: "𝚛", s: "𝚜",
      t: "𝚝", u: "𝚞", v: "𝚟", w: "𝚠", x: "𝚡", y: "𝚢", z: "𝚣"
    };
    const fancy = (str) => String(str).replace(/[A-Za-z]/g, (c) => fontMap[c] || c);

    const emojiMap = {
      ai: "🤖", "ai-image": "🎨", group: "👥", system: "⚙️",
      fun: "🎯", owner: "👑", config: "🧠", economy: "💰",
      media: "🎬", "18+": "🔞", tools: "🧰", utility: "🔧",
      info: "ℹ️", image: "🖼️", game: "🎮", admin: "🛡️",
      rank: "🏅", boxchat: "💬", others: "📁"
    };

    const cleanCategoryName = (text) => {
      if (!text) return "others";
      return text
        .normalize("NFKD")
        .replace(/[^\w\s-]/g, "")
        .replace(/\s+/g, " ")
        .trim()
        .toLowerCase();
    };

    for (const [name, cmd] of allCommands) {
      const cat = cleanCategoryName(cmd.config.category);
      if (!categories[cat]) categories[cat] = [];
      categories[cat].push(cmd.config.name);
    }

    const gifURLs = [
      "https://i.imgur.com/DLYrB7b.gif",
      "https://i.imgur.com/GWgU6AH.gif",
      "https://i.imgur.com/JwBjiOB.gif",
      "https://i.imgur.com/BkVaVNk.gif",
      "https://i.imgur.com/B6PlgIG.gif",
      "https://i.imgur.com/DJwJ9t9.gif"
    ];

    const randomGifURL = gifURLs[Math.floor(Math.random() * gifURLs.length)];
    const gifFolder = path.join(__dirname, "cache");
    if (!fs.existsSync(gifFolder)) fs.mkdirSync(gifFolder, { recursive: true });
    const gifName = path.basename(randomGifURL);
    const gifPath = path.join(gifFolder, gifName);

    let gifReady = false;
    try {
      if (!fs.existsSync(gifPath)) await downloadGif(randomGifURL, gifPath);
      gifReady = fs.existsSync(gifPath) && fs.statSync(gifPath).size > 0;
    } catch (e) {
      gifReady = false;
    }

    // একক কমান্ড ডিটেইল
    if (args[0]) {
      const query = args[0].toLowerCase();
      const cmd =
        allCommands.get(query) ||
        [...allCommands.values()].find((c) => (c.config.aliases || []).includes(query));
      if (!cmd) return message.reply(`❌ ${fancy(`Command "${query}" not found.`)}`);

      const {
        name,
        version,
        author,
        guide,
        category,
        shortDescription,
        longDescription,
        aliases
      } = cmd.config;

      const desc =
        typeof longDescription === "string"
          ? longDescription
          : longDescription?.en || shortDescription?.en || shortDescription || "No description";

      const usage =
        typeof guide === "string"
          ? guide.replace(/{pn}/g, prefix)
          : guide?.en?.replace(/{pn}/g, prefix) || `${prefix}${name}`;

      const infoBody =
        `☠️ ${fancy("COMMAND INFO")} ☠️\n\n` +
        `➥ ${fancy("Name")}: ${fancy(name)}\n` +
        `➥ ${fancy("Category")}: ${fancy(category || "Uncategorized")}\n` +
        `➥ ${fancy("Description")}: ${fancy(desc)}\n` +
        `➥ ${fancy("Aliases")}: ${fancy(aliases?.length ? aliases.join(", ") : "None")}\n` +
        `➥ ${fancy("Usage")}: ${fancy(usage)}\n` +
        `➥ ${fancy("Author")}: ${fancy(author || "Unknown")}\n` +
        `➥ ${fancy("Version")}: ${fancy(version || "1.0")}`;

      if (gifReady) {
        return message.reply({ body: infoBody, attachment: fs.createReadStream(gifPath) });
      } else {
        return message.reply(infoBody);
      }
    }

    // সব কমান্ড লিস্ট
    const formatCommands = (cmds) =>
      cmds.sort().map((cmd) => `🔹 ${fancy(cmd)}`).join("\n");

    let msg = `${fancy("✨ 𝗚𝗢𝗔𝗧𝗕𝗢𝗧 𝗠𝗘𝗡𝗨 ✨")}\n━━━━━━━━━━━━━━━━━━━\n`;
    const sortedCategories = Object.keys(categories).sort();

    for (const cat of sortedCategories) {
      const emoji = emojiMap[cat] || "📁";
      msg += `\n${emoji} ${fancy(`CATEGORY: ${cat.toUpperCase()}`)}\n`;
      msg += `${formatCommands(categories[cat])}\n`;
    }

    msg += `━━━━━━━━━━━━━━━━━━━\n💡 ${fancy(`TIP: USE "${prefix}help [command]" TO GET FULL DETAILS.`)}\n🪄 ${fancy("BOT BY: Ajmaul ✨")}`;

    if (gifReady) {
      return message.reply({ body: msg, attachment: fs.createReadStream(gifPath) });
    } else {
      return message.reply(msg);
    }
  }
};

// GIF ডাউনলোড ফাংশন
function downloadGif(url, dest) {
  return new Promise((resolve, reject) => {
    const file = fs.createWriteStream(dest);
    https.get(url, (res) => {
      if (res.statusCode !== 200) {
        fs.unlink(dest, () => {});
        return reject(new Error(`Failed to download '${url}' (${res.statusCode})`));
      }
      res.pipe(file);
      file.on("finish", () => file.close(resolve));
    }).on("error", (err) => {
      fs.unlink(dest, () => {});
      reject(err);
    });
  });
}