// Copyright (c) Umbraco.
// See LICENSE for more details.

using System.Data;
using System.IO;
using System.Linq;
using System.Text;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using NUnit.Framework;
using Umbraco.Cms.Core.Configuration.Models;
using Umbraco.Cms.Core.Hosting;
using Umbraco.Cms.Core.IO;
using Umbraco.Cms.Core.Models;
using Umbraco.Cms.Core.Persistence.Repositories;
using Umbraco.Cms.Infrastructure.Persistence.Repositories.Implement;
using Umbraco.Cms.Tests.Common.TestHelpers;
using Umbraco.Cms.Tests.Common.Testing;
using Umbraco.Cms.Tests.Integration.Testing;

namespace Umbraco.Cms.Tests.Integration.Umbraco.Infrastructure.Persistence.Repositories;

[TestFixture]
[UmbracoTest(Database = UmbracoTestOptions.Database.None, Logger = UmbracoTestOptions.Logger.Console)]
public class StylesheetRepositoryTest : UmbracoIntegrationTest
{
    [SetUp]
    public void SetUpFileSystem()
    {
        var path = HostingEnvironment.MapPathWebRoot(GlobalSettings.UmbracoCssPath);
        _fileSystem = new PhysicalFileSystem(IOHelper, HostingEnvironment, GetRequiredService<ILogger<PhysicalFileSystem>>(), path, "/css");

        _fileSystems = FileSystemsCreator.CreateTestFileSystems(
            LoggerFactory,
            IOHelper,
            GetRequiredService<IOptions<GlobalSettings>>(),
            HostingEnvironment,
            null,
            null,
            _fileSystem,
            null,
            null);

        var stream = CreateStream("body {background:#EE7600; color:#FFF;}");
        _fileSystem.AddFile("styles.css", stream);
    }

    [TearDown]
    public void TearDownFileSystem()
    {
        // Delete all files
        Purge((PhysicalFileSystem)_fileSystem, string.Empty);
        _fileSystem = null;
    }

    private FileSystems _fileSystems;
    private IFileSystem _fileSystem;

    private IHostingEnvironment HostingEnvironment => GetRequiredService<IHostingEnvironment>();

    private IStylesheetRepository CreateRepository()
    {
        var globalSettings = new GlobalSettings();
        return new StylesheetRepository(_fileSystems);
    }

    [Test]
    public void Can_Instantiate_Repository()
    {
        // Arrange
        using (ScopeProvider.CreateScope())
        {
            // Act
            var repository = CreateRepository();

            // Assert
            Assert.That(repository, Is.Not.Null);
        }
    }

    [Test]
    public void Can_Perform_Add()
    {
        // Arrange
        using (ScopeProvider.CreateScope())
        {
            var repository = CreateRepository();

            // Act
            var stylesheet =
                new Stylesheet("test-add.css") { Content = "body { color:#000; } .bold {font-weight:bold;}" };
            repository.Save(stylesheet);

            // Assert
            Assert.That(_fileSystem.FileExists("test-add.css"), Is.True);
        }
    }

    [Test]
    public void Can_Perform_Update()
    {
        // Arrange
        using (ScopeProvider.CreateScope())
        {
            var repository = CreateRepository();

            // Act
            var stylesheet =
                new Stylesheet("test-update.css") { Content = "body { color:#000; } .bold {font-weight:bold;}" };
            repository.Save(stylesheet);

            var stylesheetUpdate = repository.Get("test-update.css");
            stylesheetUpdate.Content = "body { color:#000; }";
            repository.Save(stylesheetUpdate);

            var stylesheetUpdated = repository.Get("test-update.css");

            // Assert
            Assert.That(stylesheetUpdated, Is.Not.Null);
            Assert.That(stylesheetUpdated.HasIdentity, Is.True);
            Assert.That(stylesheetUpdated.Content, Is.EqualTo("body { color:#000; }"));
        }
    }

    [Test]
    public void Can_Perform_Update_With_Property()
    {
        // Arrange
        using (ScopeProvider.CreateScope())
        {
            var repository = CreateRepository();

            // Act
            IStylesheet stylesheet =
                new Stylesheet("test-update.css") { Content = "body { color:#000; } .bold {font-weight:bold;}" };
            repository.Save(stylesheet);

            stylesheet.AddProperty(new StylesheetProperty("Test", "p", "font-size:2em;"));

            repository.Save(stylesheet);

            // re-get
            stylesheet = repository.Get(stylesheet.Name);

            // Assert
            Assert.That(
                stylesheet.Content,
                Is.EqualTo(
                    "body { color:#000; } .bold {font-weight:bold;}\r\n\r\n/**umb_name:Test*/\r\np {\r\n\tfont-size:2em;\r\n}"
                        .Replace("\r\n", Environment.NewLine)));
            Assert.AreEqual(1, stylesheet.Properties.Count());
        }
    }

    [Test]
    public void Throws_When_Adding_Duplicate_Properties()
    {
        // Arrange
        using (ScopeProvider.CreateScope())
        {
            var repository = CreateRepository();

            // Act
            var stylesheet =
                new Stylesheet("test-update.css") { Content = "body { color:#000; } .bold {font-weight:bold;}" };
            repository.Save(stylesheet);

            stylesheet.AddProperty(new StylesheetProperty("Test", "p", "font-size:2em;"));

            Assert.Throws<DuplicateNameException>(() =>
                stylesheet.AddProperty(new StylesheetProperty("test", "p", "font-size:2em;")));
        }
    }

    [Test]
    public void Can_Perform_Delete()
    {
        // Arrange
        using (ScopeProvider.CreateScope())
        {
            var repository = CreateRepository();

            // Act
            var stylesheet =
                new Stylesheet("test-delete.css") { Content = "body { color:#000; } .bold {font-weight:bold;}" };
            repository.Save(stylesheet);

            repository.Delete(stylesheet);

            // Assert
            Assert.That(_fileSystem.FileExists("test-delete.css"), Is.False);
        }
    }

    [Test]
    public void Can_Perform_Get()
    {
        // Arrange
        using (ScopeProvider.CreateScope())
        {
            var repository = CreateRepository();

            // Act
            var stylesheet = repository.Get("styles.css");

            // Assert
            Assert.That(stylesheet, Is.Not.Null);
            Assert.That(stylesheet.HasIdentity, Is.True);
            Assert.That(stylesheet.Content, Is.EqualTo("body {background:#EE7600; color:#FFF;}"));
            //// Assert.That(repository.ValidateStylesheet(stylesheet), Is.True); //TODO this can't be activated before we handle file systems correct
        }
    }

    [Test]
    public void Can_Perform_GetAll()
    {
        // Arrange
        using (ScopeProvider.CreateScope())
        {
            var repository = CreateRepository();

            var stylesheet =
                new Stylesheet("styles-v2.css") { Content = "body { color:#000; } .bold {font-weight:bold;}" };
            repository.Save(stylesheet);

            // Act
            var stylesheets = repository.GetMany().ToArray();

            // Assert
            Assert.That(stylesheets, Is.Not.Null);
            Assert.That(stylesheets.Any(), Is.True);
            Assert.That(stylesheets.Any(x => x == null), Is.False);
            Assert.That(stylesheets.Count(), Is.EqualTo(2));
        }
    }

    [Test]
    public void Can_Perform_GetAll_With_Params()
    {
        // Arrange
        using (ScopeProvider.CreateScope())
        {
            var repository = CreateRepository();

            var stylesheet =
                new Stylesheet("styles-v2.css") { Content = "body { color:#000; } .bold {font-weight:bold;}" };
            repository.Save(stylesheet);

            // Act
            var stylesheets = repository.GetMany("styles-v2.css", "styles.css").ToArray();

            // Assert
            Assert.That(stylesheets, Is.Not.Null);
            Assert.That(stylesheets.Any(), Is.True);
            Assert.That(stylesheets.Any(x => x == null), Is.False);
            Assert.That(stylesheets.Count(), Is.EqualTo(2));
        }
    }

    [Test]
    public void Can_Perform_Exists()
    {
        // Arrange
        using (ScopeProvider.CreateScope())
        {
            var repository = CreateRepository();

            // Act
            var exists = repository.Exists("styles.css");

            // Assert
            Assert.That(exists, Is.True);
        }
    }

    [Test]
    public void PathTests()
    {
        // unless noted otherwise, no changes / 7.2.8
        using (ScopeProvider.CreateScope())
        {
            var repository = CreateRepository();

            IStylesheet stylesheet =
                new Stylesheet("test-path-1.css") { Content = "body { color:#000; } .bold {font-weight:bold;}" };
            repository.Save(stylesheet);

            Assert.IsTrue(_fileSystem.FileExists("test-path-1.css"));
            Assert.AreEqual("test-path-1.css", stylesheet.Path);
            Assert.AreEqual("/css/test-path-1.css", stylesheet.VirtualPath);

            stylesheet =
                new Stylesheet("path-2/test-path-2.css") { Content = "body { color:#000; } .bold {font-weight:bold;}" };
            repository.Save(stylesheet);

            Assert.IsTrue(_fileSystem.FileExists("path-2/test-path-2.css"));
            Assert.AreEqual("path-2\\test-path-2.css".Replace("\\", $"{Path.DirectorySeparatorChar}"), stylesheet.Path);
            Assert.AreEqual("/css/path-2/test-path-2.css", stylesheet.VirtualPath);

            stylesheet = repository.Get("path-2/test-path-2.css");
            Assert.IsNotNull(stylesheet);
            Assert.AreEqual("path-2\\test-path-2.css".Replace("\\", $"{Path.DirectorySeparatorChar}"), stylesheet.Path);
            Assert.AreEqual("/css/path-2/test-path-2.css", stylesheet.VirtualPath);

            stylesheet =
                new Stylesheet("path-2\\test-path-3.css") { Content = "body { color:#000; } .bold {font-weight:bold;}" };
            repository.Save(stylesheet);

            Assert.IsTrue(_fileSystem.FileExists("path-2/test-path-3.css"));
            Assert.AreEqual("path-2\\test-path-3.css".Replace("\\", $"{Path.DirectorySeparatorChar}"), stylesheet.Path);
            Assert.AreEqual("/css/path-2/test-path-3.css", stylesheet.VirtualPath);

            stylesheet = repository.Get("path-2/test-path-3.css");
            Assert.IsNotNull(stylesheet);
            Assert.AreEqual("path-2\\test-path-3.css".Replace("\\", $"{Path.DirectorySeparatorChar}"), stylesheet.Path);
            Assert.AreEqual("/css/path-2/test-path-3.css", stylesheet.VirtualPath);

            stylesheet = repository.Get("path-2\\test-path-3.css");
            Assert.IsNotNull(stylesheet);
            Assert.AreEqual("path-2\\test-path-3.css".Replace("\\", $"{Path.DirectorySeparatorChar}"), stylesheet.Path);
            Assert.AreEqual("/css/path-2/test-path-3.css", stylesheet.VirtualPath);

            stylesheet =
                new Stylesheet("..\\test-path-4.css") { Content = "body { color:#000; } .bold {font-weight:bold;}" };
            Assert.Throws<UnauthorizedAccessException>(() =>
                repository.Save(stylesheet));

            stylesheet =
                new Stylesheet("\\test-path-5.css") { Content = "body { color:#000; } .bold {font-weight:bold;}" };
            repository.Save(stylesheet);

            stylesheet = repository.Get("\\test-path-5.css");
            Assert.IsNotNull(stylesheet);
            Assert.AreEqual("test-path-5.css", stylesheet.Path);
            Assert.AreEqual("/css/test-path-5.css", stylesheet.VirtualPath);

            stylesheet = repository.Get("missing.css");
            Assert.IsNull(stylesheet);

            // #7713 changes behaviour to return null when outside the filesystem
            // to accomodate changing the CSS path and not flooding the backoffice with errors
            stylesheet = repository.Get("..\\test-path-4.css"); // outside the filesystem, does not exist
            Assert.IsNull(stylesheet);

            stylesheet = repository.Get("../packages.config"); // outside the filesystem, exists
            Assert.IsNull(stylesheet);
        }
    }

    private void Purge(PhysicalFileSystem fs, string path)
    {
        var files = fs.GetFiles(path, "*.css");
        foreach (var file in files)
        {
            fs.DeleteFile(file);
        }

        var dirs = fs.GetDirectories(path);
        foreach (var dir in dirs)
        {
            Purge(fs, dir);
            fs.DeleteDirectory(dir);
        }
    }

    protected Stream CreateStream(string contents = null)
    {
        if (string.IsNullOrEmpty(contents))
        {
            contents = "/* test */";
        }

        var bytes = Encoding.UTF8.GetBytes(contents);
        var stream = new MemoryStream(bytes);

        return stream;
    }
}