using JdeScoping.ConfigManager.Services;
using JdeScoping.ConfigManager.ViewModels.Dialogs;

namespace JdeScoping.ConfigManager.Tests.ViewModels.Dialogs;

public class ValidationResultsDialogViewModelTests
{
    [Fact]
    public void Constructor_WithEmptyResults_HasNoItems()
    {
        // Arrange
        var appSettingsResult = new ValidationResult();
        var pipelinesResult = new ValidationResult();

        // Act
        var sut = new ValidationResultsDialogViewModel(appSettingsResult, pipelinesResult);

        // Assert
        sut.Items.Count.ShouldBe(0);
        sut.ErrorCount.ShouldBe(0);
        sut.WarningCount.ShouldBe(0);
        sut.IsValid.ShouldBeTrue();
    }

    [Fact]
    public void Constructor_WithErrors_PopulatesItemsCorrectly()
    {
        // Arrange
        var appSettingsResult = new ValidationResult();
        appSettingsResult.AddError("Missing connection string");
        appSettingsResult.AddError("Invalid timeout value");
        var pipelinesResult = new ValidationResult();

        // Act
        var sut = new ValidationResultsDialogViewModel(appSettingsResult, pipelinesResult);

        // Assert
        sut.Items.Count.ShouldBe(2);
        sut.ErrorCount.ShouldBe(2);
        sut.WarningCount.ShouldBe(0);
        sut.IsValid.ShouldBeFalse();
    }

    [Fact]
    public void Constructor_WithWarnings_PopulatesItemsCorrectly()
    {
        // Arrange
        var appSettingsResult = new ValidationResult();
        appSettingsResult.AddWarning("Deprecated setting used");
        var pipelinesResult = new ValidationResult();
        pipelinesResult.AddWarning("Pipeline has no transformers");

        // Act
        var sut = new ValidationResultsDialogViewModel(appSettingsResult, pipelinesResult);

        // Assert
        sut.Items.Count.ShouldBe(2);
        sut.ErrorCount.ShouldBe(0);
        sut.WarningCount.ShouldBe(2);
        sut.IsValid.ShouldBeFalse(); // Both errors and warnings make it invalid
    }

    [Fact]
    public void Constructor_WithMixedResults_PopulatesAllItems()
    {
        // Arrange
        var appSettingsResult = new ValidationResult();
        appSettingsResult.AddError("Error in appsettings");
        appSettingsResult.AddWarning("Warning in appsettings");
        var pipelinesResult = new ValidationResult();
        pipelinesResult.AddError("Error in pipelines");
        pipelinesResult.AddWarning("Warning in pipelines");

        // Act
        var sut = new ValidationResultsDialogViewModel(appSettingsResult, pipelinesResult);

        // Assert
        sut.Items.Count.ShouldBe(4);
        sut.ErrorCount.ShouldBe(2);
        sut.WarningCount.ShouldBe(2);
        sut.IsValid.ShouldBeFalse();
    }

    [Fact]
    public void Constructor_SetsCorrectSourceOnItems()
    {
        // Arrange
        var appSettingsResult = new ValidationResult();
        appSettingsResult.AddError("App error");
        var pipelinesResult = new ValidationResult();
        pipelinesResult.AddError("Pipeline error");

        // Act
        var sut = new ValidationResultsDialogViewModel(appSettingsResult, pipelinesResult);

        // Assert
        sut.Items.ShouldContain(i => i.Source == "appsettings.json" && i.Message == "App error");
        sut.Items.ShouldContain(i => i.Source == "pipelines.json" && i.Message == "Pipeline error");
    }

    [Fact]
    public void CloseCommand_InvokesRequestClose()
    {
        // Arrange
        var appSettingsResult = new ValidationResult();
        var pipelinesResult = new ValidationResult();
        var sut = new ValidationResultsDialogViewModel(appSettingsResult, pipelinesResult);
        var closeInvoked = false;
        sut.RequestClose = () => closeInvoked = true;

        // Act
        sut.CloseCommand.Execute(null);

        // Assert
        closeInvoked.ShouldBeTrue();
    }

    [Fact]
    public void CloseCommand_DoesNotThrow_WhenRequestCloseIsNull()
    {
        // Arrange
        var appSettingsResult = new ValidationResult();
        var pipelinesResult = new ValidationResult();
        var sut = new ValidationResultsDialogViewModel(appSettingsResult, pipelinesResult);
        sut.RequestClose = null;

        // Act & Assert - Should not throw
        Should.NotThrow(() => sut.CloseCommand.Execute(null));
    }

    [Fact]
    public void Constructor_ThrowsOnNullAppSettingsResult()
    {
        // Arrange
        var pipelinesResult = new ValidationResult();

        // Act & Assert
        Should.Throw<ArgumentNullException>(() =>
            new ValidationResultsDialogViewModel(null!, pipelinesResult));
    }

    [Fact]
    public void Constructor_ThrowsOnNullPipelinesResult()
    {
        // Arrange
        var appSettingsResult = new ValidationResult();

        // Act & Assert
        Should.Throw<ArgumentNullException>(() =>
            new ValidationResultsDialogViewModel(appSettingsResult, null!));
    }
}

public class ValidationItemViewModelTests
{
    [Fact]
    public void Constructor_SetsPropertiesCorrectly()
    {
        // Act
        var sut = new ValidationItemViewModel("Test message", "test.json", ValidationItemType.Error);

        // Assert
        sut.Message.ShouldBe("Test message");
        sut.Source.ShouldBe("test.json");
        sut.Type.ShouldBe(ValidationItemType.Error);
    }

    [Fact]
    public void Constructor_ErrorType_SetsErrorStyling()
    {
        // Act
        var sut = new ValidationItemViewModel("Error", "test.json", ValidationItemType.Error);

        // Assert
        sut.Icon.ShouldBe("\u2717"); // X mark
        sut.IconColor.ShouldBe("#FF6B6B");
        sut.Background.ShouldBe("#1AFF6B6B");
        sut.BorderColor.ShouldBe("#FF6B6B");
    }

    [Fact]
    public void Constructor_WarningType_SetsWarningStyling()
    {
        // Act
        var sut = new ValidationItemViewModel("Warning", "test.json", ValidationItemType.Warning);

        // Assert
        sut.Icon.ShouldBe("\u26A0"); // Warning sign
        sut.IconColor.ShouldBe("#FFB84D");
        sut.Background.ShouldBe("#1AFFB84D");
        sut.BorderColor.ShouldBe("#FFB84D");
    }
}