using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.Linq;
using System.Numerics;
using Dalamud.Bindings.ImGui;
using Dalamud.Game.ClientState.Conditions;
using Dalamud.Game.ClientState.Objects.Types;
using Dalamud.Interface.Windowing;
using Dalamud.Plugin.Services;
using Questionable.Controller;
using Questionable.Data;
using Questionable.Model;
using Questionable.Model.Common;
using Questionable.Model.Questing;

namespace Questionable.Windows;

internal sealed class DebugOverlay : Window
{
	private readonly QuestController _questController;

	private readonly QuestRegistry _questRegistry;

	private readonly IGameGui _gameGui;

	private readonly IClientState _clientState;

	private readonly ICondition _condition;

	private readonly AetheryteData _aetheryteData;

	private readonly IObjectTable _objectTable;

	private readonly CombatController _combatController;

	private readonly Configuration _configuration;

	public ElementId? HighlightedQuest { get; set; }

	public DebugOverlay(QuestController questController, QuestRegistry questRegistry, IGameGui gameGui, IClientState clientState, ICondition condition, AetheryteData aetheryteData, IObjectTable objectTable, CombatController combatController, Configuration configuration)
		: base("Questionable Debug Overlay###QuestionableDebugOverlay", ImGuiWindowFlags.NoInputs | ImGuiWindowFlags.NoTitleBar | ImGuiWindowFlags.NoScrollbar | ImGuiWindowFlags.NoBackground | ImGuiWindowFlags.NoSavedSettings, forceMainWindow: true)
	{
		_questController = questController;
		_questRegistry = questRegistry;
		_gameGui = gameGui;
		_clientState = clientState;
		_condition = condition;
		_aetheryteData = aetheryteData;
		_objectTable = objectTable;
		_combatController = combatController;
		_configuration = configuration;
		base.Position = Vector2.Zero;
		base.PositionCondition = ImGuiCond.Always;
		base.Size = ImGui.GetIO().DisplaySize;
		base.SizeCondition = ImGuiCond.Always;
		base.IsOpen = true;
		base.ShowCloseButton = false;
		base.RespectCloseHotkey = false;
	}

	public override bool DrawConditions()
	{
		return _configuration.Advanced.DebugOverlay;
	}

	public override void PreDraw()
	{
		base.Size = ImGui.GetIO().DisplaySize;
	}

	public override void Draw()
	{
		if (_condition[ConditionFlag.OccupiedInCutSceneEvent])
		{
			return;
		}
		IClientState clientState = _clientState;
		if (clientState != null && clientState.IsLoggedIn && clientState.LocalPlayer != null && !clientState.IsPvPExcludingDen && _questController.IsQuestWindowOpen)
		{
			DrawCurrentQuest();
			DrawHighlightedQuest();
			if (_configuration.Advanced.CombatDataOverlay)
			{
				DrawCombatTargets();
			}
		}
	}

	private void DrawCurrentQuest()
	{
		QuestController.QuestProgress currentQuest = _questController.CurrentQuest;
		if (currentQuest == null)
		{
			return;
		}
		QuestSequence questSequence = currentQuest.Quest.FindSequence(currentQuest.Sequence);
		if (questSequence == null)
		{
			return;
		}
		for (int i = currentQuest.Step; i <= questSequence.Steps.Count; i++)
		{
			QuestStep questStep = questSequence.FindStep(i);
			if (questStep != null && TryGetPosition(questStep, out var position))
			{
				DrawStep(i.ToString(CultureInfo.InvariantCulture), questStep, position.Value, (Vector3.Distance(_clientState.LocalPlayer.Position, position.Value) < questStep.CalculateActualStopDistance()) ? 4278255360u : 4278190335u);
			}
		}
	}

	private void DrawHighlightedQuest()
	{
		if (HighlightedQuest == null || !_questRegistry.TryGetQuest(HighlightedQuest, out Quest quest))
		{
			return;
		}
		foreach (QuestSequence item in quest.Root.QuestSequence)
		{
			for (int i = 0; i < item.Steps.Count; i++)
			{
				QuestStep questStep = item.FindStep(i);
				if (questStep != null && TryGetPosition(questStep, out var position))
				{
					DrawStep($"{quest.Id} / {item.Sequence} / {i}", questStep, position.Value, uint.MaxValue);
				}
			}
		}
	}

	private void DrawStep(string counter, QuestStep step, Vector3 position, uint color)
	{
		if (!step.Disabled && step.TerritoryId == _clientState.TerritoryType && _gameGui.WorldToScreen(position, out var screenPos))
		{
			ImGui.GetWindowDrawList().AddCircleFilled(screenPos, 3f, color);
			ImDrawListPtr windowDrawList = ImGui.GetWindowDrawList();
			Vector2 pos = screenPos + new Vector2(10f, -8f);
			ImU8String text = new ImU8String(7, 5);
			text.AppendFormatted(counter);
			text.AppendLiteral(": ");
			text.AppendFormatted(step.InteractionType);
			text.AppendLiteral("\n");
			text.AppendFormatted(position.ToString("G", CultureInfo.InvariantCulture));
			text.AppendLiteral(" [");
			text.AppendFormatted((position - _clientState.LocalPlayer.Position).Length(), "N2");
			text.AppendLiteral("]\n");
			text.AppendFormatted(step.Comment);
			windowDrawList.AddText(pos, color, text);
		}
	}

	private void DrawCombatTargets()
	{
		if (!_combatController.IsRunning)
		{
			return;
		}
		foreach (IGameObject item3 in _objectTable.Skip(1))
		{
			if (item3 is IBattleNpc && _gameGui.WorldToScreen(item3.Position, out var screenPos))
			{
				(int Priority, string Reason) killPriority = _combatController.GetKillPriority(item3);
				int item = killPriority.Priority;
				string item2 = killPriority.Reason;
				ImDrawListPtr windowDrawList = ImGui.GetWindowDrawList();
				Vector2 pos = screenPos + new Vector2(10f, -8f);
				int col = ((item > 0) ? (-16711936) : (-1));
				ImU8String text = new ImU8String(12, 7);
				text.AppendFormatted(item3.Name);
				text.AppendLiteral("/");
				text.AppendFormatted(item3.GameObjectId, "X");
				text.AppendLiteral(", ");
				text.AppendFormatted(item3.BaseId);
				text.AppendLiteral(", ");
				text.AppendFormatted(item);
				text.AppendLiteral(" - ");
				text.AppendFormatted(item2);
				text.AppendLiteral(", ");
				text.AppendFormatted(Vector3.Distance(item3.Position, _clientState.LocalPlayer.Position), "N2");
				text.AppendLiteral(", ");
				text.AppendFormatted(item3.IsTargetable);
				windowDrawList.AddText(pos, (uint)col, text);
			}
		}
	}

	private bool TryGetPosition(QuestStep step, [NotNullWhen(true)] out Vector3? position)
	{
		if (step.Position.HasValue)
		{
			position = step.Position;
			return true;
		}
		EAetheryteLocation valueOrDefault = default(EAetheryteLocation);
		bool flag;
		if (step != null)
		{
			EInteractionType interactionType = step.InteractionType;
			if ((uint)(interactionType - 4) <= 1u)
			{
				EAetheryteLocation? aetheryte = step.Aetheryte;
				if (aetheryte.HasValue)
				{
					valueOrDefault = aetheryte.GetValueOrDefault();
					flag = true;
					goto IL_004e;
				}
			}
		}
		flag = false;
		goto IL_004e;
		IL_004e:
		if (flag)
		{
			position = _aetheryteData.Locations[valueOrDefault];
			return true;
		}
		if (step != null && step.InteractionType == EInteractionType.AttuneAethernetShard)
		{
			EAetheryteLocation? aetheryte = step.AethernetShard;
			if (aetheryte.HasValue)
			{
				EAetheryteLocation valueOrDefault2 = aetheryte.GetValueOrDefault();
				position = _aetheryteData.Locations[valueOrDefault2];
				return true;
			}
		}
		position = null;
		return false;
	}
}