using AcDream.App.Combat;
using AcDream.App.Diagnostics;
using AcDream.App.Input;
using AcDream.UI.Abstractions.Input;

namespace AcDream.App.Tests.Input;

public sealed class GameplayInputCommandControllerTests
{
    [Theory]
    [InlineData(InputAction.ToggleInventoryPanel, "inventory")]
    [InlineData(InputAction.AcdreamToggleDebugPanel, "debug")]
    [InlineData(InputAction.AcdreamToggleFlyMode, "fly-or-chase")]
    [InlineData(InputAction.AcdreamTogglePlayerMode, "player-mode")]
    [InlineData(InputAction.ToggleChatEntry, "chat")]
    [InlineData(InputAction.ToggleOptionsPanel, "settings")]
    [InlineData(InputAction.CombatToggleCombat, "combat")]
    public void RecognizedCommand_RoutesToTypedOwner(
        InputAction action,
        string expected)
    {
        var harness = new Harness();

        bool handled = harness.Controller.Handle(action);

        Assert.True(handled);
        Assert.Equal([expected], harness.Calls);
    }

    [Fact]
    public void DiagnosticCommand_PrecedesRemainingCommandSwitch()
    {
        var harness = new Harness();
        harness.Diagnostics.HandledAction = InputAction.AcdreamToggleDebugPanel;

        bool handled = harness.Controller.Handle(
            InputAction.AcdreamToggleDebugPanel);

        Assert.True(handled);
        Assert.Equal(["diagnostic"], harness.Calls);
    }

    [Fact]
    public void UnknownCommand_IsNotClaimed()
    {
        var harness = new Harness();

        bool handled = harness.Controller.Handle(InputAction.MovementForward);

        Assert.False(handled);
        Assert.Empty(harness.Calls);
    }

    [Theory]
    [InlineData(true, true, true, "cancel-target")]
    [InlineData(false, true, true, "exit-fly")]
    [InlineData(false, false, true, "exit-player")]
    [InlineData(false, false, false, "close")]
    public void Escape_PreservesTargetFlyPlayerWindowPriority(
        bool targetMode,
        bool flyMode,
        bool playerMode,
        string expected)
    {
        var harness = new Harness
        {
            TargetMode = { IsActive = targetMode },
            Camera = { IsFly = flyMode },
            Player = { IsPlayer = playerMode },
        };

        bool handled = harness.Controller.Handle(InputAction.EscapeKey);

        Assert.True(handled);
        Assert.Equal([expected], harness.Calls);
    }

    private sealed class Harness
    {
        public Harness()
        {
            Retained = new FakeRetained(Calls);
            DevTools = new FakeDevTools(Calls);
            Diagnostics = new FakeDiagnostics(Calls);
            Player = new FakePlayerMode(Calls);
            TargetMode = new FakeTargetMode(Calls);
            Camera = new FakeCamera(Calls);
            Combat = new FakeCombat(Calls);
            Window = new FakeWindow(Calls);
            Controller = new GameplayInputCommandController(
                Retained,
                DevTools,
                Diagnostics,
                Player,
                TargetMode,
                Camera,
                Combat,
                Window);
        }

        public List<string> Calls { get; } = [];
        public FakeRetained Retained { get; }
        public FakeDevTools DevTools { get; }
        public FakeDiagnostics Diagnostics { get; }
        public FakePlayerMode Player { get; }
        public FakeTargetMode TargetMode { get; }
        public FakeCamera Camera { get; }
        public FakeCombat Combat { get; }
        public FakeWindow Window { get; }
        public GameplayInputCommandController Controller { get; }
    }

    private sealed class FakeRetained(List<string> calls)
        : IRetainedGameplayWindowCommands
    {
        public void ToggleInventory() => calls.Add("inventory");
    }

    private sealed class FakeDevTools(List<string> calls)
        : IDevToolsGameplayCommands
    {
        public void ToggleDebugPanel() => calls.Add("debug");
        public void FocusChatInput() => calls.Add("chat");
        public void ToggleSettingsPanel() => calls.Add("settings");
    }

    private sealed class FakeDiagnostics(List<string> calls)
        : IRuntimeDiagnosticCommands
    {
        public InputAction? HandledAction { get; set; }

        public bool Handle(InputAction action)
        {
            if (action != HandledAction)
                return false;
            calls.Add("diagnostic");
            return true;
        }

        public void CycleTimeOfDay() => calls.Add("time");
        public void CycleWeather() => calls.Add("weather");
        public void ToggleCollisionWireframes() => calls.Add("collision");
    }

    private sealed class FakePlayerMode(List<string> calls)
        : IPlayerModeGameplayCommands
    {
        public bool IsPlayer { get; set; }
        public bool IsPlayerMode => IsPlayer;
        public void ToggleFlyOrChase() => calls.Add("fly-or-chase");
        public void TogglePlayerMode() => calls.Add("player-mode");
        public void ExitPlayerMode() => calls.Add("exit-player");
    }

    private sealed class FakeTargetMode(List<string> calls)
        : IItemTargetModeCommands
    {
        public bool IsActive { get; set; }
        public bool IsAnyTargetModeActive => IsActive;
        public void CancelTargetMode() => calls.Add("cancel-target");
    }

    private sealed class FakeCamera(List<string> calls)
        : IGameplayCameraModeCommands
    {
        public bool IsFly { get; set; }
        public bool IsFlyMode => IsFly;
        public void ExitFlyMode() => calls.Add("exit-fly");
    }

    private sealed class FakeCombat(List<string> calls) : ILiveCombatModeCommand
    {
        public void Toggle() => calls.Add("combat");
    }

    private sealed class FakeWindow(List<string> calls) : IGameplayWindowCommands
    {
        public void Close() => calls.Add("close");
    }
}