using System;
using System.Collections.Generic;
using Dalamud.Game.ClientState.Conditions;
using Dalamud.Plugin.Services;
using FFXIVClientStructs.FFXIV.Client.Game;
using LLib.Gear;
using LLib.Inventory;
using Microsoft.Extensions.Logging;
using Questionable.Controller.Steps.Common;
using Questionable.Data;
using Questionable.Functions;
using Questionable.Model;
using Questionable.Model.Questing;

namespace Questionable.Controller.Steps.Shared;

internal static class RedeemRewardItems
{
	internal sealed class Factory(QuestData questData, Configuration configuration) : ITaskFactory
	{
		public unsafe IEnumerable<ITask> CreateAllTasks(Quest quest, QuestSequence sequence, QuestStep step)
		{
			if (step.InteractionType != EInteractionType.AcceptQuest)
			{
				return Array.Empty<ITask>();
			}
			List<ITask> list = new List<ITask>();
			InventoryManager* ptr = InventoryManager.Instance();
			if (ptr == null)
			{
				return list;
			}
			bool hasFreeInventorySlot = InventoryHelper.HasFreeInventorySlot();
			foreach (ItemReward redeemableItem in questData.RedeemableItems)
			{
				if (ptr->GetInventoryItemCount(redeemableItem.ItemId, isHq: false, checkEquipped: true, checkArmory: true, 0) != 0 && !redeemableItem.IsUnlocked() && PassesRedemptionFilters(redeemableItem.Type, redeemableItem.IsUntradable, configuration.General, hasFreeInventorySlot))
				{
					list.Add(new Task(redeemableItem));
				}
			}
			if (list.Count > 0)
			{
				list.Insert(0, new Mount.UnmountTask());
			}
			return list;
		}
	}

	internal sealed record Task(ItemReward ItemReward) : ITask
	{
		public int OriginalGearsetIndex { get; set; } = -1;

		public override string ToString()
		{
			return "TryRedeem(" + ItemReward.Name + ")";
		}
	}

	internal sealed class Executor(GameFunctions gameFunctions, Configuration configuration, ICondition condition, ILogger<Executor> logger) : TaskExecutor<Task>(), IStoppableTaskExecutor, ITaskExecutor
	{
		private static readonly TimeSpan MinimumCastTime = TimeSpan.FromSeconds(4L);

		private const long GearsetSettleDelayMs = 1000L;

		private const long UseItemRetryDelayMs = 1000L;

		private const int MaxUseItemAttempts = 5;

		private long _useItemAt;

		private long _continueAt;

		private int _useItemAttempts;

		private bool _itemUsed;

		protected override bool Start()
		{
			if (condition[ConditionFlag.Mounted] && base.Task.OriginalGearsetIndex < 0)
			{
				return false;
			}
			long num = (_useItemAt = Environment.TickCount64);
			if (base.Task.ItemReward is CofferReward)
			{
				int? cofferGearsetIndex = configuration.General.CofferGearsetIndex;
				if (cofferGearsetIndex.HasValue)
				{
					int valueOrDefault = cofferGearsetIndex.GetValueOrDefault();
					if (base.Task.OriginalGearsetIndex < 0)
					{
						int currentGearsetIndex = GearsetHelper.GetCurrentGearsetIndex();
						if (currentGearsetIndex != valueOrDefault && GearsetHelper.TryEquipGearset(valueOrDefault))
						{
							base.Task.OriginalGearsetIndex = currentGearsetIndex;
							_useItemAt = num + 1000;
						}
					}
					else if (GearsetHelper.GetCurrentGearsetIndex() != valueOrDefault)
					{
						GearsetHelper.TryEquipGearset(valueOrDefault);
						_useItemAt = num + 1000;
					}
				}
			}
			return true;
		}

		public override ETaskResult Update()
		{
			long tickCount = Environment.TickCount64;
			if (!_itemUsed)
			{
				if (tickCount < _useItemAt)
				{
					return ETaskResult.StillRunning;
				}
				if (base.Task.ItemReward.IsUnlocked() || !HasItemInInventory(base.Task.ItemReward.ItemId))
				{
					RestoreGearset();
					return ETaskResult.TaskComplete;
				}
				if (gameFunctions.UseItem(base.Task.ItemReward.ItemId))
				{
					_itemUsed = true;
					TimeSpan timeSpan = base.Task.ItemReward.CastTime;
					if (timeSpan < MinimumCastTime)
					{
						timeSpan = MinimumCastTime;
					}
					_continueAt = tickCount + (long)timeSpan.TotalMilliseconds + 3000;
					return ETaskResult.StillRunning;
				}
				_useItemAttempts++;
				if (_useItemAttempts >= 5)
				{
					logger.LogWarning("Unable to use {ItemName} after {Attempts} attempts, giving up", base.Task.ItemReward.Name, _useItemAttempts);
					RestoreGearset();
					return ETaskResult.TaskComplete;
				}
				_useItemAt = tickCount + 1000;
				return ETaskResult.StillRunning;
			}
			if (condition[ConditionFlag.Casting])
			{
				return ETaskResult.StillRunning;
			}
			if (tickCount <= _continueAt)
			{
				return ETaskResult.StillRunning;
			}
			RestoreGearset();
			return ETaskResult.TaskComplete;
		}

		public void StopNow()
		{
			RestoreGearset();
		}

		private void RestoreGearset()
		{
			if (base.Task.OriginalGearsetIndex >= 0 && GearsetHelper.TryEquipGearset(base.Task.OriginalGearsetIndex))
			{
				base.Task.OriginalGearsetIndex = -1;
			}
		}

		private unsafe static bool HasItemInInventory(uint itemId)
		{
			InventoryManager* ptr = InventoryManager.Instance();
			if (ptr != null)
			{
				return ptr->GetInventoryItemCount(itemId, isHq: false, checkEquipped: true, checkArmory: true, 0) > 0;
			}
			return false;
		}

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

	internal static bool PassesRedemptionFilters(EItemRewardType type, bool isUntradable, Configuration.GeneralConfiguration general, bool hasFreeInventorySlot)
	{
		if (general.DisabledRewardTypes.Contains(type))
		{
			return false;
		}
		if (general.SkipTradableRewards && !isUntradable)
		{
			return false;
		}
		if (type == EItemRewardType.Coffer && !hasFreeInventorySlot)
		{
			return false;
		}
		return true;
	}
}