using System;
using LLib.Gear;
using LLib.Inventory;
using Microsoft.Extensions.Logging;
using Questionable.Model;
using Questionable.Model.Questing;

namespace Questionable.Controller.Steps.Interactions;

internal static class UnequipItem
{
	internal sealed class Factory : SimpleTaskFactory
	{
		public override ITask? CreateTask(Quest quest, QuestSequence sequence, QuestStep step)
		{
			if (step.InteractionType != EInteractionType.UnequipItem)
			{
				return null;
			}
			ArgumentNullException.ThrowIfNull(step.ItemId, "step.ItemId");
			return new Task(step.ItemId.Value);
		}
	}

	internal sealed record Task(uint ItemId) : ITask
	{
		public override string ToString()
		{
			return $"Unequip({ItemId})";
		}
	}

	internal sealed class DoUnequip(ILogger<DoUnequip> logger) : TaskExecutor<Task>()
	{
		private long _continueAt;

		private int _attempts;

		protected override bool Start()
		{
			int equippedItemSlot = InventoryHelper.GetEquippedItemSlot(base.Task.ItemId);
			if (equippedItemSlot < 0)
			{
				logger.LogDebug("Item {ItemId} is not equipped, skipping", base.Task.ItemId);
				return false;
			}
			if (!EEquipSlotCategoryExtensions.TryUnequipItem(equippedItemSlot))
			{
				throw new TaskException($"Failed to unequip item {base.Task.ItemId} - armory chest may be full");
			}
			_continueAt = Environment.TickCount64 + 1000;
			_attempts = 1;
			return true;
		}

		public override ETaskResult Update()
		{
			if (Environment.TickCount64 < _continueAt)
			{
				return ETaskResult.StillRunning;
			}
			if (!InventoryHelper.IsItemEquipped(base.Task.ItemId))
			{
				return ETaskResult.TaskComplete;
			}
			_attempts++;
			if (_attempts > 3)
			{
				throw new TaskException($"Item {base.Task.ItemId} still equipped after {_attempts} attempts");
			}
			int equippedItemSlot = InventoryHelper.GetEquippedItemSlot(base.Task.ItemId);
			if (equippedItemSlot >= 0)
			{
				EEquipSlotCategoryExtensions.TryUnequipItem(equippedItemSlot);
			}
			_continueAt = Environment.TickCount64 + 1000;
			return ETaskResult.StillRunning;
		}

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