using Launcher.Next.Application;
using Xunit;

namespace Launcher.Next.Tests;

public sealed class LegacyProductSelectionTests
{
    [Fact]
    public void SourceVerifiedProducts_ExposeExactOpenFileFilters()
    {
        Assert.Equal("Project files |Project.xml|All files (*.*)|*.*", LegacyProductSelections.Pnid.Filter);
        Assert.Equal("nwd files (*.nwd)|*.nwd|All files (*.*)|*.*", LegacyProductSelections.Navisworks.Filter);
        Assert.Equal("Project.xml", LegacyProductSelections.Pnid.RequiredFileName);
        Assert.Equal(".nwd", LegacyProductSelections.Navisworks.RequiredFileName);
    }

    [Fact]
    public void AutomaticRoster_UsesOnlyExactLegacyRelativeLocation()
    {
        using var fixture = new SelectionFixture();
        var project = fixture.ProjectFile("Project.xml");
        var actual = LegacyProductSelections.AutomaticRoster(LegacyProductSelections.Pnid, project);
        Assert.Equal(Path.Combine(fixture.Root, "_System", "Plant PnID_2019", "Applications", "download_list.xml"), actual);
        Assert.DoesNotContain("scan", actual, StringComparison.OrdinalIgnoreCase);
    }

    [Fact]
    public void SelectedProjectFile_IsProductSpecificAndRejectsWrongExtension()
    {
        using var fixture = new SelectionFixture();
        var nwd = fixture.ProjectFile("model.nwd");
        Assert.Equal(nwd, LegacyProductSelections.ValidateSelectedFile(LegacyProductSelections.Navisworks, nwd));
        Assert.Throws<InvalidOperationException>(() => LegacyProductSelections.ValidateSelectedFile(LegacyProductSelections.Pnid, nwd));
    }

    [Fact]
    public void AutomaticPnidRoster_PreservesOrderAndReportsExactUnmappedIds()
    {
        using var fixture = new SelectionFixture();
        var project = fixture.ProjectFile("Project.xml");
        fixture.WriteAutomatic("Plant PnID_2019", "<root><id>c1b999d6c16029e9ac5b1e1a8afe1500</id><id>5b80379c3ec715e7da0ee414c53aa7bc</id><id>1111</id></root>");
        var plan = LegacyProductSelections.ReadRoster(LegacyProductSelections.Pnid, project, null, new LegacyConfigurationAdapter());
        Assert.Equal("Automatic", plan.Source);
        Assert.Equal(["c1b999d6c16029e9ac5b1e1a8afe1500", "5b80379c3ec715e7da0ee414c53aa7bc", "1111"], plan.OrderedIds);
        Assert.Equal(plan.OrderedIds, plan.UnmappedIds);
    }

    [Fact]
    public void ManualRoster_DoesNotChangeProjectAndUsesExplicitDownloadList()
    {
        using var fixture = new SelectionFixture();
        var project = fixture.ProjectFile("model.nwd");
        var manual = Path.Combine(fixture.Root, "download_list.xml");
        File.WriteAllText(manual, "<root><id>7dd981169fa14d21aaef3fcdb0e7e970</id></root>");
        var plan = LegacyProductSelections.ReadRoster(LegacyProductSelections.Navisworks, project, manual, new LegacyConfigurationAdapter());
        Assert.Equal("Manual", plan.Source);
        Assert.Equal(manual, plan.RosterPath);
        Assert.Equal(["7dd981169fa14d21aaef3fcdb0e7e970"], plan.UnmappedIds);
        Assert.Equal(project, LegacyProductSelections.ValidateSelectedFile(LegacyProductSelections.Navisworks, project));
    }

    [Fact]
    public void MissingAutomaticRoster_FailsClosedWithoutSearchingOtherDirectories()
    {
        using var fixture = new SelectionFixture();
        var project = fixture.ProjectFile("model.nwd");
        File.WriteAllText(Path.Combine(fixture.Root, "download_list.xml"), "<root><id>7dd981169fa14d21aaef3fcdb0e7e970</id></root>");
        var ex = Assert.Throws<InvalidOperationException>(() => LegacyProductSelections.ReadRoster(LegacyProductSelections.Navisworks, project, null, new LegacyConfigurationAdapter()));
        Assert.Equal("LEGACY_DOWNLOAD_LIST_NOT_FOUND", ex.Message);
    }

    [Fact]
    public void ProductIncompatibleIds_AreBlocked_AndDuplicateIdsRemainDiagnosticInput()
    {
        using var fixture = new SelectionFixture();
        var project = fixture.ProjectFile("Project.xml");
        fixture.WriteAutomatic("Plant PnID_2019", "<root><id>unexpected</id></root>");
        Assert.Equal("LEGACY_PLUGIN_PRODUCT_MISMATCH", Assert.Throws<InvalidOperationException>(() => LegacyProductSelections.ReadRoster(LegacyProductSelections.Pnid, project, null, new LegacyConfigurationAdapter())).Message);
        fixture.WriteAutomatic("Plant PnID_2019", "<root><id>1111</id><id>1111</id></root>");
        var duplicatePlan = LegacyProductSelections.ReadRoster(LegacyProductSelections.Pnid, project, null, new LegacyConfigurationAdapter());
        Assert.Equal(["1111", "1111"], duplicatePlan.OrderedIds);
    }

    [Fact]
    public void Navisworks_DoesNotAdvertisePlantBootstrap()
    {
        Assert.False(LegacyProductSelections.Navisworks.SupportsPlantBootstrap);
        Assert.True(LegacyProductSelections.Pnid.SupportsPlantBootstrap);
        Assert.Equal(["7dd981169fa14d21aaef3fcdb0e7e970"], LegacyProductSelections.Navisworks.UnmappedLegacyIds);
    }

    private sealed class SelectionFixture : IDisposable
    {
        public SelectionFixture() { Root = Path.Combine(Path.GetTempPath(), "launcher-next-selection-" + Guid.NewGuid().ToString("N")); Directory.CreateDirectory(Path.Combine(Root, "Project")); }
        public string Root { get; }
        public string ProjectFile(string name) { var path = Path.Combine(Root, "Project", name); File.WriteAllText(path, "fixture"); return path; }
        public void WriteAutomatic(string pattern, string xml) { var directory = Path.Combine(Root, "_System", pattern, "Applications"); Directory.CreateDirectory(directory); File.WriteAllText(Path.Combine(directory, "download_list.xml"), xml); }
        public void Dispose() { if (Directory.Exists(Root)) Directory.Delete(Root, true); }
    }
}