using System;
using Dalamud.Hooking;
using Dalamud.Plugin.Services;
using FFXIVClientStructs.FFXIV.Client.Game.Event;
using FFXIVClientStructs.FFXIV.Common.Lua;
using Microsoft.Extensions.Logging;

namespace Questionable.Controller.GameUi;

internal sealed class AutoSnipeHandler : IDisposable
{
	private unsafe delegate ulong EnqueueSnipeTaskDelegate(EventSceneModuleImplBase* scene, lua_State* state);

	private readonly QuestController _questController;

	private readonly Configuration _configuration;

	private readonly ILogger<AutoSnipeHandler> _logger;

	private readonly Hook<EnqueueSnipeTaskDelegate>? _enqueueSnipeTaskHook;

	public unsafe AutoSnipeHandler(QuestController questController, Configuration configuration, IGameInteropProvider gameInteropProvider, ILogger<AutoSnipeHandler> logger)
	{
		_questController = questController;
		_configuration = configuration;
		_logger = logger;
		try
		{
			_enqueueSnipeTaskHook = gameInteropProvider.HookFromSignature<EnqueueSnipeTaskDelegate>("48 89 5C 24 ?? 48 89 6C 24 ?? 48 89 74 24 ?? 57 48 83 EC 50 48 8B F9 48 8D 4C 24 ??", EnqueueSnipeTask);
			_enqueueSnipeTaskHook.Enable();
			_logger.LogInformation("AutoSnipeHandler enabled");
		}
		catch (Exception exception)
		{
			_logger.LogError(exception, "Failed to initialize AutoSnipeHandler");
			_enqueueSnipeTaskHook = null;
		}
	}

	private unsafe ulong EnqueueSnipeTask(EventSceneModuleImplBase* scene, lua_State* state)
	{
		if (_configuration.General.AutoSnipe && _questController.IsRunning)
		{
			_logger.LogDebug("Auto-completing snipe task");
			TValue* top = state->top;
			top->tt = 3;
			top->value.n = 1.0;
			state->top++;
			return 1uL;
		}
		return _enqueueSnipeTaskHook.Original(scene, state);
	}

	public void Dispose()
	{
		if (_enqueueSnipeTaskHook != null)
		{
			_enqueueSnipeTaskHook.Disable();
			_enqueueSnipeTaskHook.Dispose();
			_logger.LogInformation("AutoSnipeHandler disabled");
		}
	}
}