/****************************************************************************
 * 2021.7 DESKTOP-CLH3E67
 ****************************************************************************/

using UnityEngine;
using UniRx;
using UniRx.Triggers;

namespace QFramework
{
	public partial class UITreeNode02 : UIElement
	{
        /// <summary>
        /// 选中后的颜色
        /// </summary>
        public Color m_SelectColor = Color.blue;

        /// <summary>
        /// 原始颜色
        /// </summary>
        public Color m_PrimitiveColor = Color.white;
        
        protected override void OnBeforeDestroy()
        {
        }

        private TreeNodeItem _treeNodeItemModel;

        /// <summary>
        /// 初始化方法
        /// </summary>
        /// <param name="treeNodeItem">节点数据模型</param>
        public void Init(TreeNodeItem treeNodeItem)
        {
            _treeNodeItemModel = treeNodeItem;
            string conent = _treeNodeItemModel.Content.Value;

            conent = treeNodeItem.index + "   " + _treeNodeItemModel.Content.Value;

            if (conent.Contains("%"))
            {
                conent = conent.Split('%')[0];
            }
            else if (conent.Contains("@"))
            {
                conent = conent.Split('@')[0];
            }

            //监测(监听)内容数据
            _treeNodeItemModel.Content.Subscribe(content => contentText.text = conent);
            //根据数据模型的ShowHidden值监测，确定显示隐藏该Node
            _treeNodeItemModel.ShowHidden.Subscribe(value =>
            {
                if (value)
                    Show();
                else
                    Hide();
            });

            //根据数据模型的Layer值检测，改变Node位置
            _treeNodeItemModel.Layer.Subscribe(layer =>
            {
                var indentDistance = 15 * (layer - 1);
            });

            //如果没有子节点，隐藏Toggle
            if (treeNodeItem.ChildTreeNodeList.TreeNodeItems.Count == 0)
            {
                //selectToggle.Hide();

				for (int i = 0; i < selectToggle.transform.childCount; i++) selectToggle.transform.GetChild(i).gameObject.SetActive(false);
            }
            else
            {
                selectToggle.isOn = _treeNodeItemModel.ExPanded.Value;
                selectToggle.onValueChanged.AddListener(on => _treeNodeItemModel.ExPanded.Value = on);
                //监测节点展开状态数据
                _treeNodeItemModel.ExPanded.Subscribe(on =>
                {
                    if (on)
                    {
                        ChangeChilderNodeItemState(treeNodeItem.ChildTreeNodeList.TreeNodeItems, true);
                        ExpandImg.Show();
                        RecoverImg.Hide();
                        selectToggle.targetGraphic = ExpandImg;
                    }
                    else
                    {
                        ChangeChilderNodeItemState(treeNodeItem.ChildTreeNodeList.TreeNodeItems, false);
                        ExpandImg.Hide();
                        RecoverImg.Show();
                        selectToggle.targetGraphic = RecoverImg;
                    }
                });
            }
            
            //节点点击事件添加
            //以下为示例
            clickButton.GetComponent<ClickButton>().onLeftClick.AddListener(() => NodeButtonLeftClick(treeNodeItem));
        }

        private void NodeButtonLeftClick(TreeNodeItem treeNodeItem)
        {
            //// 重置
            contentText.color = m_SelectColor;   
        }

        /// <summary>
        /// 切换节点状态
        /// </summary>
        /// <param name="nodeList"></param>
        /// <param name="hide"></param>
        public void ChangeChilderNodeItemState(ReactiveCollection<TreeNodeItem> nodeList, bool hide = false)
        {
            nodeList.ForEach(item =>
            {
                item.ShowHidden.Value = hide;
                if (hide == true && item.ExPanded.Value == false) return;

                if (item.ChildTreeNodeList.TreeNodeItems.Count != 0)
                {
                    ChangeChilderNodeItemState(item.ChildTreeNodeList.TreeNodeItems, hide);
                }
            });
        }

        /// <summary>
        /// 重置为原始状态
        /// </summary>
        public void ResetToOriginalState()
        {
            // 颜色
            contentText.color = m_PrimitiveColor;
        }
    }
}