// Copyright (c) 2019, Compiler Explorer Authors
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//     * Redistributions of source code must retain the above copyright notice,
//       this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
"use strict";

const
    tarGzip = require('node-targz');

class Packager {
    constructor() {
    }

    async package(directory, destination) {
        return await this.tarGzFiles(directory, destination);
    }

    unpack(packageFile, destination) {
        return new Promise((resolve, reject) => {
            tarGzip.decompress({
                source: packageFile,
                destination: destination
            }, (err) => {
                if (err) {
                    reject(err);
                } else {
                    resolve(destination);
                }
            });
        });
    }

    tarGzFiles(cwd, destination) {
        return new Promise((resolve, reject) => {
            tarGzip.compress({
                source: cwd,
                destination: destination,
                level: 6,
                memLevel: 6,
                options: {
                    dereference: true
                }
            }, (err) => {
                if (err) {
                    reject(err);
                } else {
                    resolve(destination);
                }
            });
        });
    }
}

module.exports = {
    Packager: Packager
};
