const express = require("express");
const fs = require('fs');
const path = require("path");
const { argv } = require("process");
const yauzl = require('yauzl');
const file = argv[2]

function unzipFile(zipPath, extractPath, callback) {
    yauzl.open(zipPath, { lazyEntries: true }, function (err, zipfile) {
        if (err) return callback(err);
        console.log("start unzip " + zipPath + " to " + extractPath);
        zipfile.readEntry();
        zipfile.on("entry", function (entry) {
            const entryPath = path.join(extractPath, entry.fileName);
            if (/\/$/.test(entry.fileName)) {
                // 递归创建目录
                fs.mkdir(entryPath, { recursive: true }, function (err) {
                    if (err) return callback(err);
                    zipfile.readEntry();
                });
            } else {
                // 先确保父目录存在
                fs.mkdir(path.dirname(entryPath), { recursive: true }, function (err) {
                    if (err) return callback(err);
                    zipfile.openReadStream(entry, function (err, readStream) {
                        if (err) return callback(err);
                        const writeStream = fs.createWriteStream(entryPath);
                        readStream.pipe(writeStream);
                        readStream.on("end", function () {
                            zipfile.readEntry();
                        });
                        writeStream.on("error", callback);
                    });
                });
            }
        });
        zipfile.on("end", function () {
            callback();
        });
        zipfile.on("error", callback);
    });
}

const zipPath = path.join(__dirname, 'zip', file);
const extractPath = path.join(__dirname, 'static');

if (!file) {
    console.error('请在命令行参数中指定 zip 文件名');
    process.exit(1);
}

unzipFile(zipPath, extractPath, function (err) {
    if (err) {
        console.error('解压失败:', err);
        process.exit(1);
    }
    console.log("unzip done");

    var app = express();
    app.use(express.static(extractPath));
    var port = 1188;
    app.listen(port);
    console.log("html5_server listen to " + port);
});