using System;
using System.Collections.Generic;
using SUISS.Core;
using UnityEngine;

namespace CIG
{
	public abstract class AssetCollection<TSerializable, TKey, TValue, TSelf> : SingletonMonobehaviour<TSelf> where TSerializable : class where TSelf : AssetCollection<TSerializable, TKey, TValue, TSelf>
	{
		protected override void Awake()
		{
			base.Awake();
			this.BuildAssetCache();
		}

		public bool ContainsAsset(TKey key)
		{
			return this._cache.ContainsKey(key);
		}

		public TValue GetAsset(TKey key)
		{
			TValue result;
			if (this._cache.TryGetValue(key, out result))
			{
				return result;
			}
			return default(TValue);
		}

		protected abstract void GetAssetKeyValue(TSerializable asset, out TKey key, out TValue value);

		private void RemoveNullElements()
		{
			if (this._assets.RemoveAll((TSerializable a) => a == null) > 0)
			{
				UnityEngine.Debug.LogErrorFormat("There were missing elements or null elements in AssetCollection '{0}'", new object[]
				{
					base.name
				});
			}
		}

		private void BuildAssetCache()
		{
			this.RemoveNullElements();
			int count = this._assets.Count;
			for (int i = 0; i < count; i++)
			{
				TSerializable asset = this._assets[i];
				TKey tkey;
				TValue value;
				this.GetAssetKeyValue(asset, out tkey, out value);
				if (this._cache.ContainsKey(tkey))
				{
					UnityEngine.Debug.LogErrorFormat("Duplicate asset '{0}' in '{1}'", new object[]
					{
						tkey,
						base.name
					});
				}
				else
				{
					this._cache[tkey] = value;
				}
			}
		}

		[SerializeField]
		protected List<TSerializable> _assets;

		protected Dictionary<TKey, TValue> _cache = new Dictionary<TKey, TValue>();
	}
}