using System.Runtime.CompilerServices;
using System.Text.Json;
using AcDream.App.UI.Layout;
using DatReaderWriter;
using DatReaderWriter.Options;
using EnumIDMap = DatReaderWriter.DBObjs.EnumIDMap;

namespace AcDream.App.Tests.UI.Layout;

/// <summary>
/// Regenerates every committed retail layout fixture from production portal.dat.
/// The test is inert unless <c>ACDREAM_REGENERATE_UI_FIXTURES=1</c> is set, keeping
/// normal test runs deterministic and dat-independent.
/// </summary>
public sealed class RetailLayoutFixtureGenerator
{
    private static readonly (uint Id, string FileName)[] Layouts =
    {
        (0x21000006u, "chat_21000006.json"),
        (0x21000016u, "toolbar_21000016.json"),
        (0x21000023u, "inventory_21000023.json"),
        (0x21000024u, "paperdoll_21000024.json"),
        (0x2100002Eu, "character_2100002E.json"),
        (0x2100006Cu, "vitals_2100006C.json"),
        (0x21000072u, "powerbar_21000072.json"),
        (0x21000073u, "combat_21000073.json"),
        (0x21000074u, "radar_21000074.json"),
    };

    [Fact]
    public void RegenerateAllRetailFixtures_WhenExplicitlyRequested()
    {
        if (!string.Equals(
                Environment.GetEnvironmentVariable("ACDREAM_REGENERATE_UI_FIXTURES"),
                "1",
                StringComparison.Ordinal))
        {
            return;
        }

        var datDir = Environment.GetEnvironmentVariable("ACDREAM_DAT_DIR")
            ?? Path.Combine(
                Environment.GetFolderPath(Environment.SpecialFolder.UserProfile),
                "Documents",
                "Asheron's Call");
        using var dats = new DatCollection(datDir, DatAccessType.Read);

        uint masterDid = (uint)dats.Portal.Header.MasterMapId;
        Assert.True(dats.Portal.TryGet<EnumIDMap>(masterDid, out var master));
        Assert.True(master!.ClientEnumToID.TryGetValue(5u, out uint uiMapDid));
        Assert.True(dats.Portal.TryGet<EnumIDMap>(uiMapDid, out var uiMap));
        Assert.True(uiMap!.ClientEnumToID.TryGetValue(2u, out uint dialogsLayoutDid));
        var dialogs = LayoutImporter.ImportInfos(
            dats,
            dialogsLayoutDid,
            RetailConfirmationDialogService.RootElementId);
        Assert.NotNull(dialogs);
        var dialogsJson = JsonSerializer.Serialize(dialogs, new JsonSerializerOptions
        {
            IncludeFields = true,
            WriteIndented = true,
        });
        File.WriteAllText(
            Path.Combine(FixtureDirectory(), $"dialogs_{dialogsLayoutDid:X8}.json"),
            dialogsJson);

        foreach (var (layoutId, fileName) in Layouts)
        {
            var info = LayoutImporter.ImportInfos(dats, layoutId);
            Assert.NotNull(info);
            if (layoutId == CombatUiController.LayoutId)
            {
                var labels = CombatUiLabels.Resolve(info, new DatStringResolver(dats));
                Assert.Equal("Speed", labels.Speed);
                Assert.Equal("Power", labels.Power);
                Assert.Equal("Repeat Attacks", labels.RepeatAttacks);
                Assert.Equal("Auto Target", labels.AutoTarget);
                Assert.Equal("Keep in View", labels.KeepInView);
                Assert.Equal("High", labels.High);
                Assert.Equal("Medium", labels.Medium);
                Assert.Equal("Low", labels.Low);
            }
            var json = JsonSerializer.Serialize(info, new JsonSerializerOptions
            {
                IncludeFields = true,
                WriteIndented = true,
            });
            File.WriteAllText(Path.Combine(FixtureDirectory(), fileName), json);
        }

    }

    private static string FixtureDirectory([CallerFilePath] string thisFile = "")
        => Path.Combine(Path.GetDirectoryName(thisFile)!, "fixtures");
}