const fs = require("fs");
const path = require("path");
const AdmZip = require("adm-zip"); // 用于解压 .jar 文件

// 创建文件夹（如果不存在）
function createDirIfNotExist(dirPath) {
	if (!fs.existsSync(dirPath)) {
		fs.mkdirSync(dirPath, { recursive: true });
	}
}

/*// 写入 pack.mcmeta 文件
function writePackMcmeta() {
	const packMcmetaPath = "./recipes/pack.mcmeta";
	const packContent = {
		pack: {
			description: "通用了部分整合包模组的物品",
			pack_format: 9,
		},
	};

	if (!fs.existsSync(packMcmetaPath)) {
		fs.writeFileSync(
			packMcmetaPath,
			JSON.stringify(packContent, null, 2),
			"utf8"
		);
		console.log("创建并写入 pack.mcmeta 文件");
	}
}*/

// 获取 .jar 文件列表
function getJarFiles(dirPath) {
	const files = fs.readdirSync(dirPath);
	return files.filter((file) => file.endsWith(".jar"));
}

// 解压 .jar 文件中的特定目录
function extractRecipesFromJar(jarPath, dir) {
	const zip = new AdmZip(jarPath);
	const recipesPath = `data/${dir}/recipes/`;
	const entries = zip.getEntries();

	// 查找并解压 recipes 文件夹中的内容
	entries.forEach((entry) => {
		if (/^data\/[^\/]+\/recipes\/.*$/.test(entry.entryName)) {
			const targetFile = path.join(__dirname, entry.entryName);
            const targetPath = path.dirname(targetFile)
            if (entry.isDirectory){
                createDirIfNotExist(targetFile);
            } else {
                createDirIfNotExist(targetPath);
                fs.writeFileSync(targetFile, entry.getData());
            }
			// console.log(`解压文件到 ${targetFile}`);
		}
	});
}

// 处理 mods 目录下的所有 .jar 文件
function processMods() {
	const modsDir = "./mods";
	// const recipesDir = "./recipes";
	if (fs.existsSync("./data")) {
		fs.rmSync("./data", { recursive: true, force: true });
	}
	// createDirIfNotExist(recipesDir); // 确保 ./recipes 文件夹存在
	// writePackMcmeta(); // 确保 ./recipes/pack.mcmeta 文件存在

	const jarFiles = getJarFiles(modsDir);

	jarFiles.forEach((jarFile) => {
		const jarPath = path.join(modsDir, jarFile);
		console.log(`正在读取 ${jarPath}`);

		const zip = new AdmZip(jarPath);
		const dataEntry = zip.getEntry("data/");
        // console.log(zip.getEntries().map((v) => v.entryName).filter((v) => /data\/[a-zA-Z]+\/recipes\/.*/.test(v)));
		if (!dataEntry) {
			console.log(`未找到 data 目录: ${jarPath}`);
			return;
		}

		// 获取 /data 文件夹内的所有子文件夹目录
		const dirList = [];
		const entries = zip.getEntries();
		entries.forEach((entry) => {
			const match = entry.entryName.match(/^data\/([^\/]+)/);
			if (match && !dirList.includes(match[1])) {
				dirList.push(match[1]);
			}
		});

		// 遍历并解压每个目录下的 recipes 文件夹
		dirList.forEach((dir) => {
			extractRecipesFromJar(jarPath, dir);
		});
	});
}

processMods();