// 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
    chai = require('chai'),
    chaiAsPromised = require('chai-as-promised'),
    Packager = require('../lib/packager').Packager,
    path = require('path'),
    fs = require('fs-extra'),
    temp = require('temp');

chai.use(chaiAsPromised);
chai.should();

function newTempDir() {
    return new Promise((resolve, reject) => {
        temp.mkdir({prefix: 'compiler-explorer-compiler', dir: process.env.tmpDir}, (err, dirPath) => {
            if (err)
                reject(`Unable to open temp file: ${err}`);
            else
                resolve(dirPath);
        });
    });
}

function writeTestFile(filepath) {
    return fs.writeFile(filepath, "#!/bin/sh\n\necho Hello, world!\n\n");
}

describe('Packager', function () {
    it('should be able to package 1 file', function () {
        const pack = new Packager();
        return newTempDir().then((dirPath) => {
            const executablePath = path.join(dirPath, "hello.txt");
            writeTestFile(executablePath).then(() => {
                const targzPath = path.join(dirPath, "package.tgz");

                return pack.package(dirPath, targzPath).then(() => {
                    return fs.existsSync(targzPath).should.equal(true);
                }).catch(err => {
                    throw err;
                });
            });
        });
    });

    it('should be able to unpack', function () {
        const pack = new Packager();
        return newTempDir().then((dirPath) => {
            const executablePath = path.join(dirPath, "hello.txt");
            return writeTestFile(executablePath).then(() => {
                const targzPath = path.join(dirPath, "package.tgz");

                return pack.package(dirPath, targzPath).then(() => {
                    return newTempDir().then((unpackPath) => {

                        const pack2 = new Packager();
                        return pack2.unpack(targzPath, unpackPath).then(() => {
                            const unpackedFilepath = path.join(unpackPath, "hello.txt");
                            return fs.existsSync(unpackedFilepath).should.equal(true);
                        });
                    });
                });
            });
        });
    });
});
