// ***********************************************************************
// Assembly         : Unity
// Author           : Kimch
// Created          : 2017-11-11
//
// Last Modified By : Kimch
// Last Modified On : 
// ***********************************************************************
// <copyright file= "QuickBox.View" company=""></copyright>
// <summary></summary>
// ***********************************************************************

using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

namespace G.UI
{
	partial class QuickBox
	{
		#region Field 

		private KeyValuePair<GameObject, List<TemplateItem>>[] _templates;
		private HashSet<TemplateItem> _activeTemplates = new HashSet<TemplateItem>();
		private bool _canShow = false;

		#endregion

		#region Method

		private void InitView()
		{
			_templates = new KeyValuePair<GameObject, List<TemplateItem>>[transform.childCount];
			for (int i = 0; i < _templates.Length; i++)
			{
				var templateGO = transform.GetChild(i).gameObject;
				var template = templateGO.AddComponent<TemplateItem>();
				templateGO.SetActive(false);

				_templates[i] = new KeyValuePair<GameObject, List<TemplateItem>>(templateGO, new List<TemplateItem>());
			}
		}

		private void RefreshView()
		{
			if (gameObject)
				transform.SetAsLastSibling();
			_canShow = true;
			ShowTemplate();
		}

		private void ClearView()
		{
			_canShow = true;
			ReturnAllTemplate();
		}

		private void ShowTemplate()
		{
			if (_canShow && _infoQueue.Count > 0)
			{
				TemplateInfo showInfo = null;
				do
				{
					showInfo = _infoQueue.Dequeue();
					if (showInfo.equipment == null || PlayerProxy.Instance.IsBetterEquipment(showInfo.equipment))
						break;
					else
						showInfo = null;
				}
				while (_infoQueue.Count > 0);
				if (showInfo != null && showInfo.equipment != null)
				{
					_canShow = false;
					var templateI = GetTemplate(showInfo.type);
					if (showInfo.type == 0)
					{
						templateI.SetData(showInfo.equipment);
					}
				}
			}
			//else
			//{
			//	_canShow = true;
			//}
		}

		private TemplateItem GetTemplate(int index = 0)
		{
			TemplateItem result = null;
			if (index >= 0 && index < _templates.Length)
			{
				int remain = _templates[index].Value.Count;
				if (remain > 0)
				{
					result = _templates[index].Value[remain - 1];
					_templates[index].Value.RemoveAt(remain - 1);
				}
				else
				{
					var go = Object.Instantiate(_templates[index].Key, this.transform);
					result = go.GetComponent<TemplateItem>();
					result.index = index;
				}
				result.gameObject.SetActive(true);
				result.transform.localPosition = _templates[index].Key.transform.localPosition;

				_activeTemplates.Add(result);
			}
			return result;
		}

		private void ReturnTemplate(TemplateItem template)
		{
			_activeTemplates.Remove(template);
			template.gameObject.SetActive(false);
			_templates[template.index].Value.Add(template);
		}

		private void ReturnAllTemplate()
		{
			if (_activeTemplates.Count > 0)
				foreach (var template in _activeTemplates)
				{
					template.gameObject.SetActive(false);
					_templates[template.index].Value.Add(template);
				}
			_activeTemplates.Clear();
		}

		private void OnTemplateFunc(TemplateItem template)
		{
			if (template.index == 0)
			{
				PlayerProxy.Instance.SetEquipment(template.data as EntityItemEquipment);
			}
			ReturnTemplate(template);
			_canShow = true;
			ShowTemplate();
		}

		private void OnTemplateClose(TemplateItem template)
		{
			ReturnTemplate(template);
			_canShow = true;
			ShowTemplate();
		}

		#endregion
	}
}