var AdmZip = require('adm-zip');

	// reading archives
	var zip = new AdmZip("./my_file.zip");
	var zipEntries = zip.getEntries(); // an array of ZipEntry records

	zipEntries.forEach(function(zipEntry) {
	    console.log(zipEntry.toString()); // outputs zip entries information
		if (zipEntry.entryName == "my_file.txt") {
		     console.log(zipEntry.data.toString('utf8')); 
		}
	});
	// outputs the content of some_folder/my_file.txt
	console.log(zip.readAsText("some_folder/my_file.txt")); 
	// extracts the specified file to the specified location
	zip.extractEntryTo(/*entry name*/"some_folder/my_file.txt", /*target path*/"/home/me/tempfolder", /*overwrite*/true)
	// extracts everything
	zip.extractAllTo(/*target path*/"/home/me/zipcontent/", /*overwrite*/true);
	
	
	// creating archives
	var zip = new AdmZip();
	
	// add file directly
	zip.addFile("test.txt", new Buffer("inner content of the file"), "entry comment goes here");
	// add local file
	zip.addLocalFile("/home/me/some_picture.png");
	// get everything as a buffer
	var willSendthis = zip.toBuffer();
	// or write everything to disk
	zip.writeZip(/*target file name*/"/home/me/files.zip");

var extractZip = function(path, extractTo) {
    return new Promise((resolve, reject) => {
        try {
            var zip = new admzip(path);
            var zipEntries = zip.getEntries();
            zip.extractEntryTo(zipEntries[0], extractTo, false, true);
            fs.unlink(path, function(){resolve(true)});
        } catch (e) {
            return reject(e);
        }
    });
};

function decompressZip(file) {
	const zip = new AdmZip(file);
	zip.extractAllTo(__rootdir, true);
	return path.join(__rootdir, zip.getEntries()[0].entryName);
}

var cacheArchiveFile = function (url) {
    
    //...
// Download the archive file.
    shell.mkdir('-p', partialPath);
    var file = path.join(partialPath, 'file.zip');
    var result = syncRequest('GET', url);
    fs.writeFileSync(file, result.getBody());

    // Extract the archive file.
    console.log("Extracting archive.");
    var directory = path.join(partialPath, "dir");
    var zip = new admZip(file);
    zip.extractAllTo(directory);

    

    //...
}

// will extract the file myfile.txt from the archive to /home/user/folder/subfolder/myfile.txt
zip.extractEntryTo("folder/subfolder/myfile.txt", "/home/user/", true, true);

// will extract the file myfile.txt from the archive to /home/user/myfile.txt
zip.extractEntryTo("folder/subfolder/myfile.txt", "/home/user/", false, true);

// will extract the file newname.txt from the archive to /home/user/myfile.txt
zip.extractEntryTo("folder/subfolder/myfile.txt", "/home/user/", false, true, "newname.txt");