using System;
using Dalamud.Game.ClientState.Conditions;
using Dalamud.Plugin.Services;
using FFXIVClientStructs.FFXIV.Client.Game;
using FFXIVClientStructs.FFXIV.Client.UI.Misc;
using FFXIVClientStructs.Interop;
using Questionable.Model;
using Questionable.Model.Questing;

namespace Questionable.Controller.Steps.Interactions;

internal static class EquipRecommended
{
	internal sealed class Factory : SimpleTaskFactory
	{
		public override ITask? CreateTask(Quest quest, QuestSequence sequence, QuestStep step)
		{
			if (step.InteractionType != EInteractionType.EquipRecommended)
			{
				return null;
			}
			return new EquipTask();
		}
	}

	internal sealed class BeforeDutyOrInstance : SimpleTaskFactory
	{
		public override ITask? CreateTask(Quest quest, QuestSequence sequence, QuestStep step)
		{
			if (step.InteractionType != EInteractionType.Duty && step.InteractionType != EInteractionType.SinglePlayerDuty && step.InteractionType != EInteractionType.Combat)
			{
				return null;
			}
			return new EquipTask();
		}
	}

	internal sealed class EquipTask : ITask
	{
		public override string ToString()
		{
			return "EquipRecommended";
		}
	}

	internal sealed class DoEquipRecommended(IClientState clientState, IChatGui chatGui, ICondition condition) : TaskExecutor<EquipTask>()
	{
		private bool _checkedOrTriggeredEquipmentUpdate;

		private DateTime _continueAt = DateTime.MinValue;

		protected unsafe override bool Start()
		{
			if (condition[ConditionFlag.InCombat])
			{
				return false;
			}
			RecommendEquipModule.Instance()->SetupForClassJob((byte)clientState.LocalPlayer.ClassJob.RowId);
			return true;
		}

		public unsafe override ETaskResult Update()
		{
			RecommendEquipModule* ptr = RecommendEquipModule.Instance();
			if (ptr->IsUpdating)
			{
				return ETaskResult.StillRunning;
			}
			if (!_checkedOrTriggeredEquipmentUpdate)
			{
				if (!IsAllRecommendeGearEquipped())
				{
					chatGui.Print("Equipping recommended gear.", "Questionable", 576);
					ptr->EquipRecommendedGear();
					_continueAt = DateTime.Now.AddSeconds(1.0);
				}
				_checkedOrTriggeredEquipmentUpdate = true;
				return ETaskResult.StillRunning;
			}
			if (!(DateTime.Now >= _continueAt))
			{
				return ETaskResult.StillRunning;
			}
			return ETaskResult.TaskComplete;
		}

		private unsafe bool IsAllRecommendeGearEquipped()
		{
			RecommendEquipModule* intPtr = RecommendEquipModule.Instance();
			InventoryContainer* inventoryContainer = InventoryManager.Instance()->GetInventoryContainer(InventoryType.EquippedItems);
			bool result = true;
			Span<Pointer<InventoryItem>> recommendedItems = intPtr->RecommendedItems;
			for (int i = 0; i < recommendedItems.Length; i++)
			{
				Pointer<InventoryItem> pointer = recommendedItems[i];
				InventoryItem* value = pointer.Value;
				if (value == null || value->ItemId == 0)
				{
					continue;
				}
				bool flag = false;
				for (int j = 0; j < inventoryContainer->Size; j++)
				{
					InventoryItem inventoryItem = inventoryContainer->Items[j];
					if (inventoryItem.ItemId != 0 && inventoryItem.ItemId == value->ItemId)
					{
						flag = true;
						break;
					}
				}
				if (!flag)
				{
					result = false;
				}
			}
			return result;
		}

		public override bool ShouldInterruptOnDamage()
		{
			return true;
		}
	}
}