using System;
using System.Threading.Tasks;
using FluentAssertions;
using ImageCatalog_2;
using ImageCatalog_2.Services;
using MaddoShared;
using Microsoft.Extensions.Logging;
using Moq;
using Microsoft.VisualStudio.TestTools.UnitTesting;

namespace MaddoShared.Tests;

[TestClass]
public class DataModelCharacterizationTests
{
    [TestMethod]
    public void SelectSourceFolderCommand_RaisesEvent()
    {
        var model = CreateModel();
        var raised = false;
        model.SelectSourceFolderRequested += (_, _) => raised = true;

        model.SelectSourceFolderCommand.Execute(null);

        raised.Should().BeTrue();
    }

    [TestMethod]
    public async Task SaveSettingsToFileAsync_DelegatesToSettingsService()
    {
        var settingsService = new Mock<ISettingsService>();
        settingsService
            .Setup(s => s.SaveSettingsAsync(It.IsAny<string>(), It.IsAny<object>()))
            .Returns(Task.CompletedTask);

        var model = CreateModel(settingsService: settingsService.Object);

        await model.SaveSettingsToFileAsync("settings.xml");

        settingsService.Verify(
            s => s.SaveSettingsAsync("settings.xml", model),
            Times.Once);
    }

    [TestMethod]
    public async Task LoadSettingsFromFileAsync_DelegatesToSettingsService()
    {
        var settingsService = new Mock<ISettingsService>();
        settingsService
            .Setup(s => s.LoadSettingsAsync(It.IsAny<string>(), It.IsAny<object>()))
            .Returns(Task.CompletedTask);

        var model = CreateModel(settingsService: settingsService.Object);

        await model.LoadSettingsFromFileAsync("settings.xml");

        settingsService.Verify(
            s => s.LoadSettingsAsync("settings.xml", model),
            Times.Once);
    }

    [TestMethod]
    public void ThumbnailOptionIndex_UpdatesAuthoritativeThumbnailState()
    {
        var model = CreateModel();

        model.ThumbnailOptionIndex = (int)DataModel.ThumbnailOptionEnum.RaceTime;

        model.ThumbnailOption.Should().Be(DataModel.ThumbnailOptionEnum.RaceTime);
        model.AddRaceTimeToThumbnails.Should().BeTrue();
        model.ThumbnailMode.Should().Be("RaceTime");
    }

    [TestMethod]
    public void ProcessingChildChange_RaisesDataModelPropertyChanged()
    {
        var model = CreateModel();
        string? changed = null;
        model.PropertyChanged += (_, args) => changed = args.PropertyName;

        model.Processing.SpeedCounter = "12.00 f/s";

        changed.Should().Be(nameof(DataModel.SpeedCounter));
        model.SpeedCounter.Should().Be("12.00 f/s");
    }

    [TestMethod]
    public void PathsNormalize_UpdatesFlattenedSourceAndDestination()
    {
        var model = CreateModel();
        model.SourcePath = "\"C:/input\"";
        model.DestinationPath = "C:/output";

        model.Paths.NormalizePaths();

        model.SourcePath.Should().Be($"C:{System.IO.Path.DirectorySeparatorChar}input{System.IO.Path.DirectorySeparatorChar}");
        model.DestinationPath.Should().Be($"C:{System.IO.Path.DirectorySeparatorChar}output{System.IO.Path.DirectorySeparatorChar}");
    }

    [TestMethod]
    public void AiChildChange_RaisesDataModelPropertyChanged()
    {
        var model = CreateModel();
        string? changed = null;
        model.PropertyChanged += (_, args) => changed = args.PropertyName;

        model.Ai.ModelsFolderPath = "K:/models";

        changed.Should().Be(nameof(DataModel.ModelsFolderPath));
        model.ModelsFolderPath.Should().Be("K:/models");
    }

    [TestMethod]
    public void RaceUploadChildChange_RaisesDataModelPropertyChanged()
    {
        var model = CreateModel();
        string? changed = null;
        model.PropertyChanged += (_, args) => changed = args.PropertyName;

        model.RaceUpload.ApiLogin = "admin";

        changed.Should().Be(nameof(DataModel.ApiLogin));
        model.ApiLogin.Should().Be("admin");
    }

    [TestMethod]
    public void VisualChildChange_RaisesDataModelPropertyChanged()
    {
        var model = CreateModel();
        string? changed = null;
        model.PropertyChanged += (_, args) => changed = args.PropertyName;

        model.Visual.FontSize = 42;

        changed.Should().Be(nameof(DataModel.FontSize));
        model.FontSize.Should().Be(42);
    }

    private static DataModel CreateModel(
        ISettingsService? settingsService = null,
        ITestService? testService = null)
    {
        var mapper = new Mock<AutoMapper.IMapper>().Object;
        var picSettings = new PicSettings();

        var imageCreator = new Mock<IImageCreator>();
        imageCreator
            .Setup(x => x.CreateImageAsync(It.IsAny<ImageState>(), It.IsAny<byte[]?>()))
            .Returns(Task.CompletedTask);

        var imageCreationService = new ImageCreationService(
            new Mock<ILogger<ImageCreationService>>().Object,
            picSettings,
            imageCreator.Object);

        var imageProcessingCoordinator = new ImageProcessingCoordinator(
            imageCreationService,
            new Mock<ILogger<ImageProcessingCoordinator>>().Object);

        var aiExtractionService = new AiExtractionService(
            new Mock<ILogger<AiExtractionService>>().Object);

        return new DataModel(
            testService ?? new Mock<ITestService>().Object,
            settingsService ?? new Mock<ISettingsService>().Object,
            imageCreationService,
            aiExtractionService,
            imageProcessingCoordinator,
            picSettings,
            mapper,
            new Mock<ILogger<DataModel>>().Object,
            versionProvider: null);
    }
}