using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace wispro.sp.entity.workflowDefine
{
    public class ConditionExpress
    {
        public ConditionTreeNode Root { get; set; }

        public void AddCondition(ConditionExpress express ,LogicSymbols logic)
        {
            if(express.Root != null)
            {
                if (Root != null)
                {
                    ConditionTreeNode node = new LogicNode() { operate = logic };
                    node.Left = Root;
                    node.Right = express.Root;
                    Root = node;
                }
                else
                {
                    Root = express.Root;
                }
            }
        }
    }

    public class ConditionTreeNode
    {
        public ConditionTreeNode Right { get; set; }

        public ConditionTreeNode Left { get; set; }
    }

    public enum LogicSymbols
    {
        AND,
        OR,
        NOT
    }

    public enum ComparisonSymbol
    {
        Contains,
        Equal,
        Greater,
        GreaterEqual,
        Less,
        LessEqual,
        NotEqual,
        In,
        Between,
        StartsWith,
        EndWith,
        NotContains
    }

    public class LogicNode : ConditionTreeNode
    {
        public LogicSymbols operate { get; set; }
    }

    public class FieldNode : ConditionTreeNode
    {
        /// <summary>
        /// 字段名称
        /// </summary>
        public string FieldName { get; set; }
        /// <summary>
        /// 值
        /// </summary>
        public string Value { get; set; }
        /// <summary>
        /// 值类型
        /// </summary>
        public string ValueType { get; set; }

        /// <summary>
        /// 比较符号
        /// </summary>
        public ComparisonSymbol Operator { get; set; }
    }
}