using System;
using System.Text;
using System.Collections;
using BP.DA;

namespace BP.En
{
    /// <summary>
    /// 属性列表
    /// </summary>
    public class EntityTreeAttr
    {
        /// <summary>
        /// 树结构编号  
        /// </summary>
        public const string No = "No";
        /// <summary>
        /// 名称
        /// </summary>
        public const string Name = "Name";
        /// <summary>
        /// 父节编号
        /// </summary>
        public const string ParentNo = "ParentNo";
        /// <summary>
        /// 顺序号
        /// </summary>
        public const string Idx = "Idx";
        /// <summary>
        /// 控制参数
        /// </summary>
        public const string CtrlWayPara = "CtrlWayPara";
        /// <summary>
        /// 图标
        /// </summary>
        public const string ICON = "ICON";
        /// <summary>
        /// 节点类型
        /// </summary>
        public const string MenuType = "MenuType";
    }
    /// <summary>
    /// 树实体
    /// </summary>
    abstract public class EntityTree : Entity
    {
        #region 属性
        public bool IsRoot
        {
            get
            {
                if (this.ParentNo == "-1" || this.ParentNo == "0")
                    return true;

                if (this.ParentNo == this.No)
                    return true;

                return false;
            }
        }
        /// <summary>
        /// 唯一标示
        /// </summary>
        public string No
        {
            get
            {
                return this.GetValStringByKey(EntityTreeAttr.No);
            }
            set
            {
                this.SetValByKey(EntityTreeAttr.No, value);
            }
        }
        /// <summary>
        /// 名称
        /// </summary>
        public string Name
        {
            get
            {
                return this.GetValStringByKey(EntityTreeAttr.Name);
            }
            set
            {
                this.SetValByKey(EntityTreeAttr.Name, value);
            }
        }
        /// <summary>
        /// 父节点编号
        /// </summary>
        public string ParentNo
        {
            get
            {
                return this.GetValStringByKey(EntityTreeAttr.ParentNo);
            }
            set
            {
                this.SetValByKey(EntityTreeAttr.ParentNo, value);
            }
        }
        /// <summary>
        /// 图标
        /// </summary>
        public string ICON
        {
            get
            {
                return this.GetValStringByKey(EntityTreeAttr.ICON);
            }
            set
            {
                this.SetValByKey(EntityTreeAttr.ICON, value);
            }
        }
        
        /// <summary>
        /// 顺序号
        /// </summary>
        public int Idx
        {
            get
            {
                return this.GetValIntByKey(EntityTreeAttr.Idx);
            }
            set
            {
                this.SetValByKey(EntityTreeAttr.Idx, value);
            }
        }

        #endregion

        #region 构造函数
        /// <summary>
        /// 主键
        /// </summary>
        public override string PK
        {
            get
            {
                return EntityTreeAttr.No;
            }
        }
        /// <summary>
        /// 树结构编号
        /// </summary>
        public EntityTree()
        {
        }
        /// <summary>
        /// 树结构编号
        /// </summary>
        /// <param name="no">编号</param>
        public EntityTree(string no)
        {
            if (DataType.IsNullOrEmpty(no))
                throw new Exception(this.EnDesc + "@对表[" + this.EnDesc + "]进行查询前必须指定编号。");

            this.No = no;
            if (this.Retrieve() == 0)
                throw new Exception("@没有" + this._enMap.PhysicsTable + ", No = " + this.No + "的记录。");
        }
        #endregion

        #region 业务逻辑处理
        /// <summary>
        /// 重新设置treeNo
        /// </summary>
        public void ResetTreeNo()
        {
        }
        /// <summary>
        /// 检查名称的问题.
        /// </summary>
        /// <returns></returns>
        protected override bool beforeInsert()
        {
            if (this.EnMap.IsAllowRepeatName == false)
            {
                if (this.PKCount == 1)
                {
                    if (this.ExitsValueNum("Name", this.Name) >= 1)
                        throw new Exception("@插入失败[" + this.EnMap.EnDesc + "] 编号[" + this.No + "]名称[" + Name + "]重复.");
                }
            }

            if (DataType.IsNullOrEmpty(this.No))
                this.No = this.GenerNewNoByKey("No");

            return base.beforeInsert();
        }
        protected override bool beforeUpdate()
        {
            if (this.EnMap.IsAllowRepeatName == false)
            {
                if (this.PKCount == 1)
                {
                    if (this.ExitsValueNum("Name", this.Name) >= 2)
                        throw new Exception("@更新失败[" + this.EnMap.EnDesc + "] 编号[" + this.No + "]名称[" + Name + "]重复.");
                }
            }
            return base.beforeUpdate();
        }
        #endregion

        #region 可让子类调用的方法
        /// <summary>
        /// 新建同级节点
        /// </summary>
        /// <returns></returns>
        public EntityTree DoCreateSameLevelNode(string name = null)
        {
            
            EntityTree en = this.CreateInstance() as EntityTree;
            if (this.ClassID.Contains("FlowSort") || this.ClassID.Contains("SysFormTree"))
                en.No = DBAccess.GenerGUID();
            else
                en.No = DBAccess.GenerOID(this.ToString()).ToString(); // en.GenerNewNoByKey(EntityTreeAttr.No);
            if (name == null)
                en.Name = "新建节点" + en.No;
            else
                en.Name = name;

            en.ParentNo = this.ParentNo;
            en.Insert();

            return en;
        }
        /// <summary>
        /// 新建子节点
        /// </summary>
        /// <returns></returns>
        public EntityTree DoCreateSubNode(string name=null)
        {
            EntityTree en = this.CreateInstance() as EntityTree;
            en.Copy(this);
            if (this.ClassID.Contains("FlowSort") || this.ClassID.Contains("SysFormTree"))
                en.No = DBAccess.GenerGUID(10, null, null);
            else
                en.No = DBAccess.GenerOID(this.ToString()).ToString();
            if (name == null)
                en.Name = "新建节点" + en.No;
            else
                en.Name = name;

            en.ParentNo = this.No;
            en.Insert();

            return en;
        }
        /// <summary>
        /// 上移
        /// </summary>
        /// <returns></returns>
        public string DoUp()
        {
            this.DoOrderUp(EntityTreeAttr.ParentNo, this.ParentNo, EntityTreeAttr.Idx);
            return "执行成功.";
        }
        /// <summary>
        /// 下移
        /// </summary>
        /// <returns></returns>
        public string DoDown()
        {
            this.DoOrderDown(EntityTreeAttr.ParentNo, this.ParentNo, EntityTreeAttr.Idx);
            return "执行成功.";
        }
        #endregion
    }
    /// <summary>
    /// 树实体s
    /// </summary>
    abstract public class EntitiesTree : Entities
    {
        #region 转化为树结构的tree.
        private StringBuilder appendMenus = null;
        private StringBuilder appendMenuSb = null;
        /// <summary>
        /// 转化为json树
        /// </summary>
        /// <returns></returns>
        public string ToJsonOfTree(string rootNo = "0")
        {
            appendMenus = new StringBuilder();
            appendMenuSb = new StringBuilder();
            EntityTree root = this.GetEntityByKey(EntityTreeAttr.ParentNo, rootNo) as EntityTree;
            if (root == null)
                return "err@没有找到rootNo=" + rootNo + "的entity.";

            appendMenus.Append("[{");
            appendMenus.Append("'id':'" + root.No + "',");
            appendMenus.Append("'pid':'" + root.ParentNo + "',");
            appendMenus.Append("'text':'" + root.Name + "'");
            // appendMenus.Append(IsPermissionsNodes(ens, dms, root.No));

            // 增加它的子级.
            appendMenus.Append(",'children':");
            AddChildren(root, this);
            appendMenus.Append(appendMenuSb);
            appendMenus.Append("}]");

            return ReplaceIllgalChart(appendMenus.ToString());
        }
        public void AddChildren(EntityTree parentEn, EntitiesTree ens)
        {
            appendMenus.Append(appendMenuSb);
            appendMenuSb.Clear();

            appendMenuSb.Append("[");
            foreach (EntityTree item in ens)
            {
                if (item.ParentNo != parentEn.No)
                    continue;

                appendMenuSb.Append("{'id':'" + item.No + "','pid':'" + item.ParentNo + "','text':'" + item.Name + "'");
                //appendMenuSb.Append(IsPermissionsNodes(ens, dms, item.No));
                EntityTree treeNode = item as EntityTree;
                // 增加它的子级.
                appendMenuSb.Append(",'children':");
                AddChildren(item, ens);
                appendMenuSb.Append("},");
            }
            if (appendMenuSb.Length > 1)
                appendMenuSb = appendMenuSb.Remove(appendMenuSb.Length - 1, 1);
            appendMenuSb.Append("]");
            appendMenus.Append(appendMenuSb);
            appendMenuSb.Clear();
        }
        public string ReplaceIllgalChart(string s)
        {
            StringBuilder sb = new StringBuilder();
            for (int i = 0, j = s.Length; i < j; i++)
            {

                char c = s[i];
                switch (c)
                {
                    case '\"':
                        sb.Append("\\\"");
                        break;
                    case '\\':
                        sb.Append("\\\\");
                        break;
                    case '/':
                        sb.Append("\\/");
                        break;
                    case '\b':
                        sb.Append("\\b");
                        break;
                    case '\f':
                        sb.Append("\\f");
                        break;
                    case '\n':
                        sb.Append("\\n");
                        break;
                    case '\r':
                        sb.Append("\\r");
                        break;
                    case '\t':
                        sb.Append("\\t");
                        break;
                    default:
                        sb.Append(c);
                        break;
                }
            }
            return sb.ToString();
        }
        #endregion 转化为树结构的tree.

        #region 构造.
        /// <summary>
        /// 查询他的子节点
        /// </summary>
        /// <param name="en"></param>
        /// <returns></returns>
        public int RetrieveHisChinren(EntityTree en)
        {
            int i = this.Retrieve(EntityTreeAttr.ParentNo, en.No);
            this.AddEntity(en);
            return i + 1;
        }

        /// <summary>
        /// 获取它的子节点
        /// </summary>
        /// <param name="en"></param>
        /// <returns></returns>
        public EntitiesTree GenerHisChinren(EntityTree en)
        {
            EntitiesTree ens = this.CreateInstance() as EntitiesTree;
            foreach (EntityTree item in ens)
            {
                if (en.ParentNo == en.No)
                    ens.AddEntity(item);
            }
            return ens;
        }
        /// <summary>
        /// 根据位置取得数据
        /// </summary>
        public new EntityTree this[int index]
        {
            get
            {
                return (EntityTree)this.InnerList[index];
            }
        }
        /// <summary>
        /// 构造
        /// </summary>
        public EntitiesTree()
        {
        }
        #endregion 构造.
    }
}