using AcDream.Core.Chat;
using AcDream.Core.Combat;
using AcDream.UI.Abstractions.Panels.Chat;

namespace AcDream.UI.Abstractions.Tests.Panels.Chat;

/// <summary>
/// Phase I.7: <see cref="ChatVM"/> surfaces combat-kind entries through
/// <see cref="ChatVM.RecentLinesDetailed"/> with their original
/// <see cref="CombatLineKind"/> attached so the panel can pick a
/// <c>TextColored</c> color per line.
/// </summary>
public sealed class ChatVMCombatTests
{
    [Fact]
    public void FormatEntry_CombatKind_PassesThroughVerbatim()
    {
        var entry = new ChatEntry(
            Kind: ChatKind.Combat,
            Sender: "",
            Text: "You hit Mosswart for 5 slashing damage (50.0%).",
            SenderGuid: 0,
            ChannelId: 0)
        { CombatKind = CombatLineKind.Info };

        Assert.Equal(
            "You hit Mosswart for 5 slashing damage (50.0%).",
            ChatVM.FormatEntry(entry));
    }

    [Fact]
    public void RecentLinesDetailed_CombatEntry_RetainsCombatKind()
    {
        var log = new ChatLog();
        var vm = new ChatVM(log);
        log.OnCombatLine("Mosswart hit you for 8 fire damage to your chest.",
            CombatLineKind.Warning);

        var lines = vm.RecentLinesDetailed();
        var line = Assert.Single(lines);
        Assert.Equal(ChatKind.Combat, line.Kind);
        Assert.Equal(CombatLineKind.Warning, line.CombatKind);
        Assert.Equal("Mosswart hit you for 8 fire damage to your chest.", line.Text);
    }

    [Fact]
    public void RecentLinesDetailed_NonCombatEntry_HasNullCombatKind()
    {
        var log = new ChatLog();
        var vm = new ChatVM(log);
        log.OnLocalSpeech("Alice", "hi", senderGuid: 0xAA, isRanged: false);

        var line = Assert.Single(vm.RecentLinesDetailed());
        Assert.Equal(ChatKind.LocalSpeech, line.Kind);
        Assert.Null(line.CombatKind);
        Assert.Equal("Alice says, \"hi\"", line.Text);
    }

    [Fact]
    public void ChatPanel_RendersCombatLine_ViaTextColored()
    {
        var log = new ChatLog();
        var vm = new ChatVM(log);
        log.OnLocalSpeech("Alice", "hi", senderGuid: 0xAA, isRanged: false);
        log.OnCombatLine("You hit Mosswart for 5 slashing damage (50.0%).",
            CombatLineKind.Info);

        var panel = new ChatPanel(vm);
        var bus = new RecordingChatBus();
        var renderer = new FakePanelRenderer { InputTextSubmitNextSubmitted = null };

        panel.Render(new PanelContext(0.016f, bus), renderer);

        // Plain LocalSpeech entry → Text; combat entry → TextColored.
        Assert.Contains(renderer.Calls, c =>
            c.Method == "Text" && (string?)c.Args[0] == "Alice says, \"hi\"");
        var coloredCall = Assert.Single(
            renderer.Calls,
            c => c.Method == "TextColored");
        Assert.Equal(
            "You hit Mosswart for 5 slashing damage (50.0%).",
            (string?)coloredCall.Args[1]);
        Assert.Equal(
            ChatPanel.ColorForCombat(CombatLineKind.Info),
            (System.Numerics.Vector4)coloredCall.Args[0]!);
    }

    private sealed class RecordingChatBus : ICommandBus
    {
        public void Publish<T>(T command) where T : notnull { /* no-op */ }
    }
}