PushEvent.cs

using System;
using Waher.Content;
using Waher.Script;
using Waher.Script.Abstraction.Elements;
using Waher.Script.Model;
using Waher.Script.Objects.VectorSpaces;
 
namespace Waher.IoTGateway.ScriptExtensions.Functions
{
    public class PushEvent : FunctionMultiVariate
    {
        public PushEvent(ScriptNode Event, ScriptNode Data, int Start, int Length, Expression Expression)
            : base(new ScriptNode[] { Event, Data }, argumentTypes2Scalar, Start, Length, Expression)
        {
        }
 
        public PushEvent(ScriptNode Page, ScriptNode Event, ScriptNode Data, int Start, int Length, Expression Expression)
            : base(new ScriptNode[] { Page, Event, Data }, new ArgumentType[] { ArgumentType.Normal, ArgumentType.Scalar, ArgumentType.Scalar }, Start, Length, Expression)
        {
        }
 
        public PushEvent(ScriptNode Page, ScriptNode QueryFilter, ScriptNode Event, ScriptNode Data, int Start, int Length, Expression Expression)
            : base(new ScriptNode[] { Page, QueryFilter, Event, Data }, argumentTypes4Scalar, Start, Length, Expression)
        {
        }
 
        public override string FunctionName => nameof(PushEvent);
 
        public override string[] DefaultArgumentNames => new string[] { "Page", "QueryFilter", "Event", "Data" };
 
        public override IElement Evaluate(IElement[] Arguments, Variables Variables)
        {
            int c = Arguments.Length;
            int d = c - 2;
            IElement[] A = new IElement[d];
 
            Array.Copy(Arguments, 0, A, 0, d);
            string[] TabIDs = GetTabIDs.GetTabs(A, this);
 
            if (TabIDs.Length > 0)
            {
                object Data = Arguments[c - 1].AssociatedObjectValue;
 
                if (Data is string s)
                    ClientEvents.PushEvent(TabIDs, Arguments[c - 2].AssociatedObjectValue?.ToString(), s, false);
                else
                    ClientEvents.PushEvent(TabIDs, Arguments[c - 2].AssociatedObjectValue?.ToString(), JSON.Encode(Data, false), true);
            }
 
            return new ObjectVector(TabIDs);
        }
    }
}