using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using Dalamud.Game.Gui.ContextMenu;
using Dalamud.Game.Text;
using Dalamud.Plugin.Services;
using FFXIVClientStructs.FFXIV.Client.UI;
using FFXIVClientStructs.FFXIV.Client.UI.Agent;
using LLib.GameData;
using LLib.GameUI;
using Microsoft.Extensions.Logging;
using Questionable.Data;
using Questionable.Functions;
using Questionable.GameStructs;
using Questionable.Model;
using Questionable.Model.Gathering;
using Questionable.Model.Questing;

namespace Questionable.Controller;

internal sealed class ContextMenuController : IDisposable
{
	private readonly IContextMenu _contextMenu;

	private readonly QuestController _questController;

	private readonly GatheringPointRegistry _gatheringPointRegistry;

	private readonly GatheringData _gatheringData;

	private readonly QuestRegistry _questRegistry;

	private readonly QuestData _questData;

	private readonly GameFunctions _gameFunctions;

	private readonly QuestFunctions _questFunctions;

	private readonly IGameGui _gameGui;

	private readonly IChatGui _chatGui;

	private readonly IClientState _clientState;

	private readonly ILogger<ContextMenuController> _logger;

	public ContextMenuController(IContextMenu contextMenu, QuestController questController, GatheringPointRegistry gatheringPointRegistry, GatheringData gatheringData, QuestRegistry questRegistry, QuestData questData, GameFunctions gameFunctions, QuestFunctions questFunctions, IGameGui gameGui, IChatGui chatGui, IClientState clientState, ILogger<ContextMenuController> logger)
	{
		_contextMenu = contextMenu;
		_questController = questController;
		_gatheringPointRegistry = gatheringPointRegistry;
		_gatheringData = gatheringData;
		_questRegistry = questRegistry;
		_questData = questData;
		_gameFunctions = gameFunctions;
		_questFunctions = questFunctions;
		_gameGui = gameGui;
		_chatGui = chatGui;
		_clientState = clientState;
		_logger = logger;
		_contextMenu.OnMenuOpened += MenuOpened;
	}

	private void MenuOpened(IMenuOpenedArgs args)
	{
		if (args.AddonName != null)
		{
			return;
		}
		uint num = GetHoveredSatisfactionSupplyItemId();
		if (num == 0)
		{
			_logger.LogTrace("Ignoring context menu, no item hovered");
			return;
		}
		if (num > 1000000)
		{
			num -= 1000000;
		}
		if (num >= 500000)
		{
			num -= 500000;
		}
		if (_gatheringData.TryGetCustomDeliveryNpc(num, out var npcId))
		{
			AddContextMenuEntry(args, num, npcId, EClassJob.Miner, "Mine");
			AddContextMenuEntry(args, num, npcId, EClassJob.Botanist, "Harvest");
		}
		else
		{
			_logger.LogDebug("No custom delivery NPC found for item {ItemId}.", num);
		}
	}

	private unsafe uint GetHoveredSatisfactionSupplyItemId()
	{
		AgentSatisfactionSupply* ptr = AgentSatisfactionSupply.Instance();
		if (ptr == null || !ptr->IsAgentActive())
		{
			return 0u;
		}
		if (_gameGui.TryGetAddonByName<AddonSatisfactionSupply>("SatisfactionSupply", out var addonPtr) && LAddon.IsAddonReady(&addonPtr->AtkUnitBase))
		{
			int hoveredElementIndex = addonPtr->HoveredElementIndex;
			if (hoveredElementIndex >= 0 && hoveredElementIndex <= 2)
			{
				return ptr->Items[addonPtr->HoveredElementIndex].Id;
			}
		}
		return 0u;
	}

	private unsafe void AddContextMenuEntry(IMenuOpenedArgs args, uint itemId, uint npcId, EClassJob classJob, string verb)
	{
		EClassJob rowId = (EClassJob)_clientState.LocalPlayer.ClassJob.RowId;
		bool flag = classJob != rowId;
		if (flag)
		{
			bool flag2 = rowId - 16 <= EClassJob.Gladiator;
			flag = flag2;
		}
		if (flag)
		{
			return;
		}
		if (!_gatheringPointRegistry.TryGetGatheringPointId(itemId, classJob, out GatheringPointId _))
		{
			_logger.LogInformation("No gathering point found for {ClassJob}.", classJob);
			return;
		}
		ushort collectability = _gatheringData.GetRecommendedCollectability(itemId);
		int quantityToGather = ((collectability > 0) ? 6 : int.MaxValue);
		if (collectability != 0)
		{
			AgentSatisfactionSupply* ptr = AgentSatisfactionSupply.Instance();
			if (ptr->IsAgentActive())
			{
				int maxTurnIns = ((ptr->NpcInfo.SatisfactionRank == 1) ? 3 : 6);
				quantityToGather = Math.Min(ptr->NpcData.RemainingAllowances, ((AgentSatisfactionSupply2*)ptr)->CalculateTurnInsToNextRank(maxTurnIns));
			}
			string text = string.Empty;
			if (!_questFunctions.IsClassJobUnlocked(classJob))
			{
				text = $"{classJob} not unlocked";
			}
			else if (quantityToGather == 0)
			{
				text = "No allowances";
			}
			else if (quantityToGather > _gameFunctions.GetFreeInventorySlots())
			{
				text = "Inventory full";
			}
			else if (_gameFunctions.IsOccupied())
			{
				text = "Can't be used while interacting";
			}
			string text2 = verb + " with Questionable";
			if (!string.IsNullOrEmpty(text))
			{
				text2 = text2 + " (" + text + ")";
			}
			args.AddMenuItem(new MenuItem
			{
				Prefix = SeIconChar.Hyadelyn,
				PrefixColor = 52,
				Name = text2,
				OnClicked = delegate
				{
					StartGathering(npcId, itemId, quantityToGather, collectability, classJob);
				},
				IsEnabled = string.IsNullOrEmpty(text)
			});
		}
	}

	private void StartGathering(uint npcId, uint itemId, int quantity, ushort collectability, EClassJob classJob)
	{
		SatisfactionSupplyInfo satisfactionSupplyInfo = (SatisfactionSupplyInfo)_questData.GetAllByIssuerDataId(npcId).Single((IQuestInfo x) => x is SatisfactionSupplyInfo);
		if (_questRegistry.TryGetQuest(satisfactionSupplyInfo.QuestId, out Quest quest))
		{
			QuestSequence questSequence = quest.FindSequence(0);
			QuestStep questStep = questSequence.Steps.Single((QuestStep x) => x.InteractionType == EInteractionType.SwitchClass);
			questStep.TargetClass = classJob switch
			{
				EClassJob.Miner => EExtendedClassJob.Miner, 
				EClassJob.Botanist => EExtendedClassJob.Botanist, 
				_ => throw new ArgumentOutOfRangeException("classJob", classJob, null), 
			};
			QuestStep questStep2 = questSequence.Steps.Single((QuestStep x) => x.InteractionType == EInteractionType.Gather);
			int num = 1;
			List<GatheredItem> list = new List<GatheredItem>(num);
			CollectionsMarshal.SetCount(list, num);
			Span<GatheredItem> span = CollectionsMarshal.AsSpan(list);
			int index = 0;
			span[index] = new GatheredItem
			{
				ItemId = itemId,
				ItemCount = quantity,
				Collectability = collectability
			};
			questStep2.ItemsToGather = list;
			_questController.SetGatheringQuest(quest);
			_questController.StartGatheringQuest("SatisfactionSupply prepare gathering");
		}
		else
		{
			_chatGui.PrintError($"No associated quest ({satisfactionSupplyInfo.QuestId}).", "Questionable");
		}
	}

	public void Dispose()
	{
		_contextMenu.OnMenuOpened -= MenuOpened;
	}
}