using ErsatzTV.Application.Graphics;
using ErsatzTV.Core.Api.Graphics;
using ErsatzTV.Core.Domain;
using ErsatzTV.Infrastructure.Data;
using ErsatzTV.Tests.Support;
using NUnit.Framework;
using Shouldly;

namespace ErsatzTV.Tests.Application.Graphics;

[TestFixture]
public class GraphicsElementHandlerTests
{
    private InMemoryTvContext _db = null!;

    [SetUp]
    public async Task SetUp() => _db = await InMemoryTvContext.CreateAsync();

    [TearDown]
    public async Task TearDown() => await _db.DisposeAsync();

    [Test]
    public async Task GetAllGraphicsElementsForApi_Should_Return_All_Elements()
    {
        await SeedElement(1, "watermark.png", GraphicsElementKind.Image, "Custom Watermark");
        await SeedElement(2, "clock.png", GraphicsElementKind.Image, string.Empty);

        var handler = new GetAllGraphicsElementsForApiHandler(_db.Factory);

        List<GraphicsElementResponseModel> result =
            await handler.Handle(new GetAllGraphicsElementsForApi(), CancellationToken.None);

        result.Count.ShouldBe(2);
        result.Select(e => e.Id).ShouldBe([1, 2]);
    }

    [Test]
    public async Task GetAllGraphicsElementsForApi_Should_Order_Named_Elements_Before_Unnamed()
    {
        // unnamed element's projected Name equals its FileName -> should sort after named elements
        await SeedElement(1, "aaa.png", GraphicsElementKind.Image, string.Empty);
        await SeedElement(2, "zzz.png", GraphicsElementKind.Image, "A Custom Name");

        var handler = new GetAllGraphicsElementsForApiHandler(_db.Factory);

        List<GraphicsElementResponseModel> result =
            await handler.Handle(new GetAllGraphicsElementsForApi(), CancellationToken.None);

        result.Count.ShouldBe(2);
        result[0].Id.ShouldBe(2);
        result[1].Id.ShouldBe(1);
    }

    [Test]
    public async Task GetAllGraphicsElementsForApi_Should_Return_Empty_List_When_None_Exist()
    {
        var handler = new GetAllGraphicsElementsForApiHandler(_db.Factory);

        List<GraphicsElementResponseModel> result =
            await handler.Handle(new GetAllGraphicsElementsForApi(), CancellationToken.None);

        result.ShouldBeEmpty();
    }

    private async Task SeedElement(int id, string path, GraphicsElementKind kind, string name)
    {
        await using TvContext context = _db.CreateContext();
        context.GraphicsElements.Add(new GraphicsElement
        {
            Id = id,
            Path = path,
            Name = name,
            Kind = kind
        });
        await context.SaveChangesAsync();
    }
}