// code from goatstore
// api: https://store.agi.bd
const fs = require("fs");
const path = require("path");
const vm = require("vm");

// কোড চালায় না, শুধু syntax পরীক্ষা করে
function checkCode(code, filename = "code.js") {
	const wrapped = "(async function(require,module,exports,__dirname,__filename){" + code + "\n})";
	try {
		new vm.Script(wrapped, { filename });
		return { ok: true };
	}
	catch (err) {
		const stack = String(err.stack || "");
		const m = stack.match(/:(\d+)\n([^\n]*)\n/);
		const line = m ? Number(m[1]) : null;
		const lineText = line ? (code.split("\n")[line - 1] || "").trim() : "";
		return { ok: false, message: err.message, line, lineText };
	}
}

function stripFences(text) {
	const fence = text.match(/```(?:js|javascript)?\n?([\s\S]*?)```/i);
	return (fence ? fence[1] : text).trim();
}

function listJsFiles(dir) {
	try {
		return fs.readdirSync(dir).filter(f => f.endsWith(".js")).map(f => path.join(dir, f));
	}
	catch (e) {
		return [];
	}
}

module.exports = {
	config: {
		name: "syntaxcheck",
		aliases: ["syntax", "jscheck"],
		version: "1.0",
		author: "Zihad",
		countDown: 5,
		role: 0,
		description: {
			en: "Check JavaScript syntax errors (no code is executed)"
		},
		category: "tools",
		guide: {
			en: "   {pn} <code>: check typed code"
				+ "\n   Reply to a message with code + {pn}: check that code"
				+ "\n   {pn} all: scan all command & event files (admin only)"
				+ "\n   {pn} <file name>: check one command file (admin only)"
		}
	},

	onStart: async function ({ api, event, args, message }) {
		const { threadID, messageID, senderID } = event;
		const adminList = (global.GoatBot && global.GoatBot.config && global.GoatBot.config.adminBot) || [];
		const isAdmin = adminList.includes(String(senderID));
		const root = process.cwd();
		const dirs = [path.join(root, "scripts", "cmds"), path.join(root, "scripts", "events")];

		const first = (args[0] || "").toLowerCase();

		// ---------- সব ফাইল স্ক্যান ----------
		if (first === "all") {
			if (!isAdmin)
				return message.reply("⛔ Only bot admins can scan files.");

			const files = dirs.flatMap(listJsFiles);
			if (!files.length)
				return message.reply("❌ No command files found.");

			const bad = [];
			for (const file of files) {
				const res = checkCode(fs.readFileSync(file, "utf-8"), file);
				if (!res.ok)
					bad.push(`❌ ${path.basename(file)} — line ${res.line || "?"}: ${res.message}`);
			}

			const head = `╭───「 SYNTAX SCAN 」\n│ 📂 Files : ${files.length}\n│ ✅ OK    : ${files.length - bad.length}\n│ ❌ Error : ${bad.length}\n╰────────────`;
			return message.reply(bad.length ? head + "\n\n" + bad.join("\n") : head + "\n\n🎉 All files are clean!");
		}

		// ---------- একটা ফাইল ----------
		if (args.length === 1 && /^[\w.\-]+$/.test(args[0]) && !/[;(){}=]/.test(args[0])) {
			const name = args[0].endsWith(".js") ? args[0] : args[0] + ".js";
			const found = dirs.map(d => path.join(d, name)).find(p => fs.existsSync(p));
			if (found) {
				if (!isAdmin)
					return message.reply("⛔ Only bot admins can check bot files.");
				const res = checkCode(fs.readFileSync(found, "utf-8"), found);
				if (res.ok)
					return message.reply(`✅ ${name}\nNo syntax errors found.`);
				return message.reply(`❌ ${name}\n📍 Line ${res.line || "?"}\n💬 ${res.message}${res.lineText ? `\n🔎 ${res.lineText.slice(0, 120)}` : ""}`);
			}
		}

		// ---------- কোড (reply বা লেখা) ----------
		let code = "";
		if (event.messageReply && event.messageReply.body)
			code = event.messageReply.body;
		else
			code = args.join(" ");

		code = stripFences(code);

		if (!code)
			return message.reply("⚠️ Reply to a message with code, or type: syntaxcheck <code>");

		const res = checkCode(code);
		if (res.ok)
			return message.reply("✅ No syntax errors found.");

		return message.reply(
			`╭───「 SYNTAX ERROR 」\n│ 📍 Line : ${res.line || "?"}\n│ 💬 ${res.message}\n${res.lineText ? `│ 🔎 ${res.lineText.slice(0, 120)}\n` : ""}╰────────────`
		);
	}
};