// /**
//  * File: NewExpression.cs
//  * Author: haraldwolff
//  *
//  * This file and it's content is copyrighted by the Author and / or copyright holder.
//  * Any use wihtout proper permission is illegal and may lead to legal actions.
//  *
//  *
//  **/
using System;
using Jint;
using Jint.Native;
using Jint.Native.String;

namespace ln.templates.script
{
    public class NewExpression
    {
        public string ExpressionText { get; }


        public NewExpression(string expression)
        {
            ExpressionText = expression;
        }


        public virtual object Resolve(IScriptContext scriptContext)
        {
            Engine engine = new Engine();
            foreach (string itemName in scriptContext.ScriptObjectNames)
                engine.SetValue(itemName, scriptContext.GetScriptObject(itemName));

            JsValue jsv = engine.Eval.Call(null, new Jint.Native.JsValue[] { ExpressionText });
            return jsv.ToObject();
        }

        public virtual bool IsTrue(IScriptContext scriptContext)
        {
            object resolved = Resolve(scriptContext);
            if (resolved == null)
                return false;
            if (resolved is bool b)
                return b;
            if (resolved is string s)
                return s.Length > 0;
            if (resolved is int i)
                return i != 0;
            if (resolved is long l)
                return l != 0;
            if (resolved is short sh)
                return sh != 0;
            if (resolved is byte by)
                return by != 0;
            if (resolved is float f)
                return Math.Abs(f) > float.Epsilon;
            if (resolved is double d)
                return Math.Abs(d) > double.Epsilon;

            return true;
        }
    }
}