using System.Collections.Generic;
using IwbZero.Expr;
using WeEngine.Enum;

namespace WeEngine.Functions
{
    /// <summary>
    /// 等待节点
    /// </summary>
    public class FunWaitNode : RunTimeBase, IFunction
    {
        public string Invoke(ExprObject exprObj)
        {
            ExprObject child = exprObj.GetChild(0), child2 = exprObj.GetChild(2), child3 = exprObj.GetChild(4);
            GetPackage(child.Expr);
            if  (child3==null)
            {
                return "FALSE";
            }
            var waitNode = Rp.GetNodeByPath(child3.Expr);
            if (waitNode == null)
            {
                return "FALSE";
            }
            if (waitNode.NodeState == NodeState.RunEnd || waitNode.NodeState == NodeState.Complete)
            {
                var child4 = exprObj.GetChild(6);
                return child4 != null ? ExprModule.Evaluate(child4.Expr) : "TRUE";
            }

            var node = Rp.GetNodeByPath(child2.Expr);
            if (Rp.WaitForRunNode.ContainsKey(waitNode.Id))
            {
                Rp.WaitForRunNode[waitNode.Id].Add(node.Id);
            }
            else
            {
                Rp.WaitForRunNode[waitNode.Id] = new List<string>() {node.Id};
            }

            return "FALSE";

        }
    }
}