using System.Net.Http.Json;

namespace HSchool.AppHost.Tests;

/// <summary>
/// The shipped <c>mods/example</c> folder: catalog, create, reload and a map that uses its room.
/// Temp packs in other tests stay disposable; this one has to survive a restart.
/// </summary>
[Collection(AppHostCollection.Name)]
public class ExamplePackTests(AppHostFixture fixture)
{
    private static readonly DateTime ExpectedDefaultStart = new(2012, 3, 31, 6, 0, 0, DateTimeKind.Utc);

    [Fact]
    public async Task Catalog_WithExample_AddsPackTypesAndLabelsOnTopOfCore()
    {
        using var client = fixture.App.CreateHttpClient("server");

        var ru = await client.GetFromJsonAsync<CatalogResponse>(
            "/api/catalog?lang=ru&mods=example",
            TestContext.Current.CancellationToken);
        var en = await client.GetFromJsonAsync<CatalogResponse>(
            "/api/catalog?lang=en&mods=example",
            TestContext.Current.CancellationToken);

        Assert.NotNull(ru);
        Assert.NotNull(en);
        Assert.Equal("Кабинет директора", Assert.Single(ru.Rooms, room => room.DefName == "PrincipalsOffice").Label);
        Assert.Equal("Кладовая", Assert.Single(ru.Rooms, room => room.DefName == "ExampleStore").Label);
        Assert.Equal("Storeroom", Assert.Single(en.Rooms, room => room.DefName == "ExampleStore").Label);
        Assert.Equal("Примерные имена", Assert.Single(ru.Countries, set => set.DefName == "ExampleNames").Label);
        Assert.Equal("Example names", Assert.Single(en.Countries, set => set.DefName == "ExampleNames").Label);
        Assert.Equal("yard", ru.DefaultMap.Territory?.Id);
    }

    [Fact]
    public async Task Catalog_PackPatch_IsVisibleOnlyWhenThePackIsSelected()
    {
        using var client = fixture.App.CreateHttpClient("server");

        var vanilla = await client.GetFromJsonAsync<CatalogResponse>("/api/catalog?lang=ru", TestContext.Current.CancellationToken);
        var withPack = await client.GetFromJsonAsync<CatalogResponse>(
            "/api/catalog?lang=ru&mods=example",
            TestContext.Current.CancellationToken);

        Assert.NotNull(vanilla);
        Assert.NotNull(withPack);
        Assert.DoesNotContain(
            Assert.Single(vanilla.Rooms, room => room.DefName == "PrincipalsOffice").Slots,
            slot => slot.Key == "exampleLocker");
        Assert.Contains(
            Assert.Single(withPack.Rooms, room => room.DefName == "PrincipalsOffice").Slots,
            slot => slot.Key == "exampleLocker");
        Assert.DoesNotContain(vanilla.Rooms, room => room.DefName == "ExampleStore");
    }

    [Fact]
    public async Task CreateSchool_WithExample_SurvivesReload()
    {
        using var client = fixture.App.CreateHttpClient("server");
        await SchoolApiTests.ResetAsync(client);

        var created = await CreateWithModsAsync(client, "С примером", ["example"]);
        Assert.Equal(["core", "example"], created.ModIds);

        using var reload = await client.PostAsync("/api/dev/reload-schools", content: null, TestContext.Current.CancellationToken);
        reload.EnsureSuccessStatusCode();

        var restored = (await SchoolApiTests.GetSchoolsAsync(client)).Schools.Single(school => school.Id == created.Id);
        Assert.Equal(created.Name, restored.Name);
        Assert.Equal(["core", "example"], restored.ModIds);
        Assert.True(restored.Running);
    }

    [Fact]
    public async Task CreateSchool_WithThePackRoomOnTheMap_Succeeds()
    {
        using var client = fixture.App.CreateHttpClient("server");
        await SchoolApiTests.ResetAsync(client);

        using var response = await client.PostAsJsonAsync(
            "/api/schools",
            new
            {
                name = "Кладовая во дворе",
                startDate = ExpectedDefaultStart,
                modIds = new[] { "example" },
                map = PackRoomMap,
            },
            TestContext.Current.CancellationToken);
        response.EnsureSuccessStatusCode();

        var created = await response.Content.ReadFromJsonAsync<SchoolApiTests.SchoolResponse>(TestContext.Current.CancellationToken);
        Assert.NotNull(created);
        Assert.Equal(["core", "example"], created.ModIds);
    }

    [Fact]
    public async Task CreateSchool_WithoutThePack_StaysVanilla()
    {
        using var client = fixture.App.CreateHttpClient("server");
        await SchoolApiTests.ResetAsync(client);

        var created = await SchoolApiTests.CreateAsync(client, "Без примера", ExpectedDefaultStart);
        Assert.Equal(["core"], created.ModIds);
    }

    private static async Task<SchoolApiTests.SchoolResponse> CreateWithModsAsync(
        HttpClient client,
        string name,
        string[] modIds)
    {
        using var response = await client.PostAsJsonAsync(
            "/api/schools",
            new { name, startDate = ExpectedDefaultStart, modIds },
            TestContext.Current.CancellationToken);
        response.EnsureSuccessStatusCode();

        var created = await response.Content.ReadFromJsonAsync<SchoolApiTests.SchoolResponse>(TestContext.Current.CancellationToken);
        Assert.NotNull(created);
        return created;
    }

    private static readonly object PackRoomMap = new
    {
        territory = new { id = "yard", def = "SchoolYard" },
        buildings = new[] { new { id = "main", def = "MainBuilding" } },
        floors = new[] { new { id = "floor-1", def = "StandardFloor", building = "main", label = "1" } },
        rooms = new[]
        {
            new { id = "store", def = "ExampleStore", building = "main", floor = "floor-1", slots = Array.Empty<object>() },
        },
        links = new[] { new { a = "yard", b = "store" } },
    };

    private sealed record CatalogResponse(
        IReadOnlyList<DefInfoResponse> Territories,
        IReadOnlyList<DefInfoResponse> Buildings,
        IReadOnlyList<DefInfoResponse> Floors,
        IReadOnlyList<RoomInfoResponse> Rooms,
        IReadOnlyList<DefInfoResponse> Things,
        IReadOnlyList<CountryInfoResponse> Countries,
        DayFrameResponse? DayFrame,
        IReadOnlyList<HolidayInfoResponse> Holidays,
        MapLayoutResponse DefaultMap);

    private sealed record DefInfoResponse(string DefName, string Label);

    private sealed record CountryInfoResponse(string DefName, string Label);

    private sealed record RoomInfoResponse(
        string DefName,
        string Label,
        IReadOnlyList<RoomSlotResponse> Slots);

    private sealed record RoomSlotResponse(string Key, string Thing);

    private sealed record DayFrameResponse(string DefName, string Label);

    private sealed record HolidayInfoResponse(string DefName, string Label);

    private sealed record MapLayoutResponse(TerritoryResponse? Territory);

    private sealed record TerritoryResponse(string Id, string Def);
}