// Copyright (C) 2024, The Duplicati Team
// https://duplicati.com, hello@duplicati.com
// 
// Permission is hereby granted, free of charge, to any person obtaining a 
// copy of this software and associated documentation files (the "Software"), 
// to deal in the Software without restriction, including without limitation 
// the rights to use, copy, modify, merge, publish, distribute, sublicense, 
// and/or sell copies of the Software, and to permit persons to whom the 
// Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in 
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
// DEALINGS IN THE SOFTWARE.

using NUnit.Framework;
using System.Linq;
using System.IO;
using System;
using System.Collections.Generic;
using System.Net;

namespace Duplicati.UnitTest
{
    public class GeneralBlackBoxTesting : BasicSetupHelper
    {
        private static readonly string SOURCE_FOLDERS = Path.Combine(BASEFOLDER, "DSMCBE");
        private readonly string zipFilename = "DSMCBE.zip";
        private string zipFilepath => Path.Combine(BASEFOLDER, this.zipFilename);

        protected IEnumerable<string> TestFolders
        {
            get
            {
                var rx = new System.Text.RegularExpressions.Regex("r(?<number>\\d+)");
                return 
                    from n in Directory.EnumerateDirectories(SOURCE_FOLDERS)
                    let m = rx.Match(n)
                        where m.Success
                    orderby int.Parse(m.Groups["number"].Value)
                    select n;
            }
        }

        protected override Dictionary<string, string> TestOptions
        {
            get
            {
                return TestUtils.DefaultOptions;
            }
        }

        protected string TestTarget 
        {
            get
            {
                var x = TestUtils.GetDefaultTarget("x");
                return x == "x" ? null : x;
            }
        }


        [OneTimeSetUp]
        public void OneTimeSetUp()
        {
            this.OneTimeTearDown();
            var url = $"https://testfiles.duplicati.com/{this.zipFilename}";
            var destinationFilePath = this.zipFilepath;
            var webRequest = (HttpWebRequest)WebRequest.Create(url);

            using (var wr = (HttpWebResponse)webRequest.GetResponse())
            using (WebClient client = new WebClient())
            {
                Console.WriteLine("downloading test file to: {0}, length: {1}", destinationFilePath, wr.ContentLength);
                var maxAttempts = 5;
                while (maxAttempts-- > 0) {
                    try {
                        DateTime beginTime = DateTime.Now;
                        client.DownloadFile(url, destinationFilePath);
                        long length = new System.IO.FileInfo(destinationFilePath).Length;
                        Console.WriteLine("downloaded test file: {0}: length {1}, duration {2}", destinationFilePath, length, (DateTime.Now - beginTime).TotalSeconds);
                        if (length == wr.ContentLength) {
                            maxAttempts = -1;
                        } else {
                            Console.WriteLine("invalid downloaded length {0}, should be {1}...", length, wr.ContentLength);
                            System.Threading.Thread.Sleep(120000);
                        }
                    }
                    catch (WebException ex)
                    {
                        if (ex.Response == null){
                            Console.WriteLine("ex.Response is null !");
                        } else {
                            Console.WriteLine("exception {0}", ex);
                            throw;
                        }
                    }
                }

                if (maxAttempts == 0) {
                    throw new Exception(string.Format("Unable to download test file from {0}", url));
                }
            }
            
            System.IO.Compression.ZipFile.ExtractToDirectory(this.zipFilepath, BASEFOLDER);
        }

        [OneTimeTearDown]
        public void OneTimeTearDown()
        {
            if (Directory.Exists(SOURCE_FOLDERS))
            {
                Directory.Delete(SOURCE_FOLDERS, true);
            }
            if (File.Exists(this.zipFilepath))
            {
                File.Delete(this.zipFilepath);
            }
        }

        [Test]
        [Category("SVNData")]
        [TestCase("zip")]
        [TestCase("7z")]
        public void TestWithSVNShort(string compression)
        {
            var opts = TestOptions;
            opts["compression-module"] = compression;
            SVNCheckoutTest.RunTest(TestFolders.Take(5).ToArray(), opts, TestTarget);
        }

        [Test]
        [Category("SVNDataLong")]
        [TestCase("zip")]
        [TestCase("7z")]
        public void TestWithSVNLong(string compression)
        {
            var opts = TestOptions;
            opts["compression-module"] = compression;
            SVNCheckoutTest.RunTest(TestFolders.ToArray(), opts, TestTarget);
        }

        [Test]
        [Category("SVNData")]
        public void TestWithErrors()
        {
            var u = new Library.Utility.Uri(TestUtils.GetDefaultTarget());
            RandomErrorBackend.WrappedBackend = u.Scheme;
            var target = u.SetScheme(new RandomErrorBackend().ProtocolKey).ToString();
            Library.DynamicLoader.BackendLoader.AddBackend(new RandomErrorBackend());

            SVNCheckoutTest.RunTest(TestFolders.Take(5).ToArray(), TestOptions, target);
        }

        [Test]
        [Category("SVNData")]
        public void TestWithoutSizeInfo()
        {
            var u = new Library.Utility.Uri(TestUtils.GetDefaultTarget());
            SizeOmittingBackend.WrappedBackend = u.Scheme;
            var target = u.SetScheme(new SizeOmittingBackend().ProtocolKey).ToString();
            Library.DynamicLoader.BackendLoader.AddBackend(new SizeOmittingBackend());

            SVNCheckoutTest.RunTest(TestFolders.Take(5).ToArray(), TestOptions, target);
        }

    }
}