using System;

using System.Collections.Generic;

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using DynamicExpresso;

public class Program

{

    public static void Main()

    {

        var expression = "temperature > 20";

        var json = "{ \"location\": \"Melbourne\", \"temperature\": 21, \"weather_description\": \"Mostly clear.\" }";

        var data = JsonConvert.DeserializeObject<dynamic>(json);

        var parameters = new List<Parameter>();

        foreach (var param in data)

        {

            switch(param.Value.Type)

            {

                case JTokenType.String:

                    parameters.Add(new Parameter(param.Name, typeof(string), param.Value.ToString()));

                    break;

                case JTokenType.Integer:

                    parameters.Add(new Parameter(param.Name, typeof(int), (int)param.Value));

                    break;

                // TODO - add more case statements for other types

                default:

                    // ignore unknown types

                    continue;

            }

        }

        var interpreter = new Interpreter();

        var result = interpreter.Eval<bool>(expression, parameters.ToArray());

        Console.WriteLine($"The result of the expression \"{expression}\" is \"{result}\"");

    }

}