using System;
using System.Collections.Generic;
using System.Linq;
using Steamworks;
using UnityEngine;

namespace HeathenEngineering.SteamApi.PlayerServices
{
	public abstract class InventoryItemDefinition : InventoryItemPointer
	{
		[SerializeField]
		public List<SteamItemDetails_t> Instances;

		public override InventoryItemType ItemType => InventoryItemType.ItemDefinition;

		public int Count
		{
			get
			{
				if (Instances != null)
				{
					return Instances.Sum((SteamItemDetails_t p) => p.m_unQuantity);
				}
				return 0;
			}
		}

		public void Consume(int count)
		{
			if (Count <= count)
			{
				return;
			}
			int num = 0;
			List<SteamItemDetails_t> list = new List<SteamItemDetails_t>();
			foreach (SteamItemDetails_t instance in Instances)
			{
				if (count - num >= instance.m_unQuantity)
				{
					num += instance.m_unQuantity;
					SteamworksPlayerInventory.ConsumeItem(instance.m_itemId, instance.m_unQuantity, delegate(bool status, SteamItemDetails_t[] results)
					{
						if (!status)
						{
							Debug.LogWarning("Failed to consume (" + instance.m_unQuantity + ") units of item [" + instance.m_iDefinition.m_SteamItemDef + "]");
							SteamworksInventorySettings.Current.ItemsConsumed.Invoke(status, results);
						}
					});
					SteamItemDetails_t item = instance;
					item.m_unQuantity = 0;
					list.Add(item);
					continue;
				}
				int need = count - num;
				num += need;
				SteamworksPlayerInventory.ConsumeItem(instance.m_itemId, Convert.ToUInt32(need), delegate(bool status, SteamItemDetails_t[] results)
				{
					if (!status)
					{
						Debug.LogWarning("Failed to consume (" + need + ") units of item [" + instance.m_iDefinition.m_SteamItemDef + "]");
					}
					if (SteamworksInventorySettings.Current != null)
					{
						SteamworksInventorySettings.Current.ItemsConsumed.Invoke(status, results);
					}
				});
				SteamItemDetails_t item2 = instance;
				item2.m_unQuantity -= Convert.ToUInt16(need);
				list.Add(item2);
				break;
			}
			foreach (SteamItemDetails_t edit in list)
			{
				Instances.RemoveAll((SteamItemDetails_t p) => p.m_itemId == edit.m_itemId);
				Instances.Add(edit);
			}
		}

		public List<ExchangeItemCount> FetchItemCount(uint count, bool decriment)
		{
			if (Count >= count)
			{
				int num = 0;
				List<ExchangeItemCount> list = new List<ExchangeItemCount>();
				List<SteamItemDetails_t> list2 = new List<SteamItemDetails_t>();
				foreach (SteamItemDetails_t instance in Instances)
				{
					if (count - num >= instance.m_unQuantity)
					{
						num += instance.m_unQuantity;
						list.Add(new ExchangeItemCount
						{
							InstanceId = instance.m_itemId,
							Quantity = instance.m_unQuantity
						});
						SteamItemDetails_t item = instance;
						item.m_unQuantity = 0;
						list2.Add(item);
						continue;
					}
					int num2 = Convert.ToInt32(count - num);
					num += num2;
					list.Add(new ExchangeItemCount
					{
						InstanceId = instance.m_itemId,
						Quantity = Convert.ToUInt32(num2)
					});
					SteamItemDetails_t item2 = instance;
					item2.m_unQuantity -= Convert.ToUInt16(num2);
					list2.Add(item2);
					break;
				}
				if (decriment)
				{
					foreach (SteamItemDetails_t edit in list2)
					{
						Instances.RemoveAll((SteamItemDetails_t p) => p.m_itemId == edit.m_itemId);
						Instances.Add(edit);
					}
				}
				return list;
			}
			return null;
		}

		public bool TransferQuantity(int source, uint quantity, int destination)
		{
			SteamItemDetails_t source2 = Instances[source];
			SteamItemInstanceID_t destination2 = SteamItemInstanceID_t.Invalid;
			if (destination > -1)
			{
				destination2 = Instances[destination].m_itemId;
			}
			return TransferQuantity(source2, quantity, destination2);
		}

		public bool TransferQuantity(SteamItemDetails_t source, uint quantity, SteamItemInstanceID_t destination)
		{
			if (source.m_unQuantity >= quantity)
			{
				return SteamworksPlayerInventory.TransferQuantity(source.m_itemId, quantity, destination, delegate
				{
					Instances.RemoveAll((SteamItemDetails_t p) => p.m_itemId == source.m_itemId);
					source.m_unQuantity -= Convert.ToUInt16(quantity);
					Instances.Add(source);
				});
			}
			return false;
		}

		public bool SplitInstance(SteamItemDetails_t source, uint quantity)
		{
			if (source.m_unQuantity >= quantity)
			{
				return SteamworksPlayerInventory.TransferQuantity(source.m_itemId, quantity, SteamItemInstanceID_t.Invalid, delegate
				{
					Instances.RemoveAll((SteamItemDetails_t p) => p.m_itemId == source.m_itemId);
					source.m_unQuantity -= Convert.ToUInt16(quantity);
					Instances.Add(source);
				});
			}
			Debug.LogWarning("Unable to split instance, insufficent units available to move.");
			return false;
		}

		public bool StackInstance(SteamItemDetails_t source, SteamItemInstanceID_t destination)
		{
			return TransferQuantity(source, source.m_unQuantity, destination);
		}

		public void Consolidate()
		{
			if (Instances != null)
			{
				if (Instances.Count > 1)
				{
					List<SteamItemInstanceID_t> removedInstances = new List<SteamItemInstanceID_t>();
					SteamItemDetails_t steamItemDetails_t = Instances[0];
					for (int i = 1; i < Instances.Count; i++)
					{
						SteamItemDetails_t toMove = Instances[i];
						if (!SteamworksPlayerInventory.TransferQuantity(toMove.m_itemId, toMove.m_unQuantity, steamItemDetails_t.m_itemId, delegate(bool result)
						{
							if (!result)
							{
								Debug.LogError("Failed to stack an instance, please refresh the item instances for item definition [" + base.name + "].");
							}
							else
							{
								removedInstances.Add(toMove.m_itemId);
							}
						}))
						{
							Debug.LogError("Steam activly refused a TransferItemQuantity request during the Consolodate operation. No further requests will be sent.");
						}
					}
					{
						foreach (SteamItemInstanceID_t instance in removedInstances)
						{
							Instances.RemoveAll((SteamItemDetails_t p) => p.m_itemId == instance);
						}
						return;
					}
				}
				Debug.LogWarning("Unable to consolodate items, this item only has 1 instance. No action will be taken.");
			}
			else
			{
				Debug.LogWarning("Unable to consolodate items, this item only has no instances. No action will be taken.");
			}
		}

		public void StartPurchase(uint quantity)
		{
			SteamItemDef_t[] pArrayItemDefs = new SteamItemDef_t[1] { DefinitionID };
			uint[] punArrayQuantity = new uint[1] { quantity };
			SteamInventory.StartPurchase(pArrayItemDefs, punArrayQuantity, 1u);
		}
	}
}