namespace HSchool.Content.Tests;

/// <summary>
/// The shipped <c>mods/example</c> folder, copied next to vanilla core. Last-wins, patches and a
/// placeable room have to work from disk — in-memory documents already have their own tests.
/// </summary>
public class ExamplePackTests
{
    private const string ExamplePackId = "example";

    private readonly CatalogLoader _loader = new();

    [Fact]
    public void DuplicateChair_LastWinsAndWarns()
    {
        var log = new RecordingLog();
        var catalog = LoadCoreAndExample(log);

        Assert.Equal(["Sit", "Chat"], catalog.Things["Chair"].Actions);
        Assert.Contains(
            log.Warnings,
            warning => warning.Contains("Chair", StringComparison.Ordinal)
                && warning.Contains(ExamplePackId, StringComparison.Ordinal));
    }

    [Fact]
    public void PatchAddsASlot_OnlyWhenThePackIsLoaded()
    {
        var vanilla = LoadCore();
        Assert.DoesNotContain(vanilla.Rooms["PrincipalsOffice"].Slots, slot => slot.Key == "exampleLocker");

        var withPack = LoadCoreAndExample();
        Assert.Contains(withPack.Rooms["PrincipalsOffice"].Slots, slot => slot.Key == "exampleLocker" && slot.Thing == "Locker");
    }

    [Fact]
    public void PackTypes_LoadWithLocalizedLabels()
    {
        var catalog = LoadCoreAndExample();

        Assert.True(catalog.Traits.ContainsKey("ExampleEarlyRiser"));
        Assert.True(catalog.Traits.ContainsKey("ExampleNightOwl"));
        Assert.True(catalog.NameSets.ContainsKey("ExampleNames"));
        Assert.True(catalog.Rooms.ContainsKey("ExampleStore"));
        Assert.Equal("Кладовая", catalog.Label("ru", catalog.Rooms["ExampleStore"]));
        Assert.Equal("Storeroom", catalog.Label("en", catalog.Rooms["ExampleStore"]));
        Assert.Equal("Примерные имена", catalog.Label("ru", catalog.NameSets["ExampleNames"]));
        Assert.Equal(["RussianLanguage"], catalog.NameSets["ExampleNames"].Spoken.ToArray());
        Assert.True(catalog.Rooms.ContainsKey("PrincipalsOffice"));
        Assert.Equal("Кабинет директора", catalog.Label("ru", catalog.Rooms["PrincipalsOffice"]));
    }

    [Fact]
    public void MapUsingThePackRoom_PassesValidation()
    {
        var catalog = LoadCoreAndExample();
        var map = new MapLayout
        {
            Territory = new TerritoryNode { Id = "yard", Def = "SchoolYard" },
            Buildings = [new BuildingNode { Id = "main", Def = "MainBuilding" }],
            Floors = [new FloorNode { Id = "floor-1", Def = "StandardFloor", Building = "main" }],
            Rooms =
            [
                new RoomNode { Id = "store", Def = "ExampleStore", Building = "main", Floor = "floor-1" },
            ],
            Links = [new MapLink { A = "yard", B = "store" }],
        };

        MapValidator.Validate(map, catalog);
        var defaults = CatalogLoader.LastDefaultMap([CatalogLoader.CorePackId, ExamplePackId], Documents());
        Assert.NotNull(defaults);
        Assert.Equal("SchoolYard", defaults.Territory?.Def);
    }

    private DefCatalog LoadCore() =>
        _loader.Load(
            [CatalogLoader.CorePackId],
            PackDocuments.FromDirectory(CatalogLoader.CorePackId, CoreRoot()));

    private DefCatalog LoadCoreAndExample(IContentLog? log = null) =>
        _loader.Load([CatalogLoader.CorePackId, ExamplePackId], Documents(), log);

    private static IReadOnlyList<ContentDocument> Documents()
    {
        var example = ExampleRoot();
        Assert.True(Directory.Exists(example), $"Example pack was not copied to {example}.");
        return
        [
            .. PackDocuments.FromDirectory(CatalogLoader.CorePackId, CoreRoot()),
            .. PackDocuments.FromDirectory(ExamplePackId, example),
        ];
    }

    private static string CoreRoot() => Path.Combine(AppContext.BaseDirectory, "vanilla");

    private static string ExampleRoot() => Path.Combine(AppContext.BaseDirectory, "example");
}