public async Task <decimal?> CalculateValueAddedServiceAsync(QuotationRequest request, Product product, ValueAddedService vas)
{
await Task.Delay(2000);
if (string.IsNullOrWhiteSpace(vas.Formula))
{
return(new Random(DateTime.Now.Second).Next(DateTime.Now.Millisecond));
}
return(vas.Formula.Length);
}
public async Task<decimal?> CalculateValueAddedServiceAsync(QuotationRequest request, Product product, ValueAddedService vas)
{
var userInputs = string.Join("\r\n", vas.UserInputs.Select(x => $"public const decimal {x.Name} = {x.Value}m;"));
var options = ScriptOptions.Default
.WithImports("System")
.WithImports("System.Math");
var script = CSharpScript
.Create<decimal>($@"
using System;
public class CalcHost
{{
const string ITEM_CATEGORY_NAME = ""{request.ItemCategory}"";
const bool IS_INTERNATIONAL = {(request.ReceiverCountry != "MY" ? "true" : "false")};
{userInputs}
// TODO : like BASE_RATE and stuff
public decimal Evaluate()
{{
{vas.Formula}
}}
}}
").ContinueWith(@"
var calc = new CalcHost();
").ContinueWith(@"
return calc.Evaluate();
").WithOptions(options);
var result = await script.RunAsync();
return (decimal?)result.ReturnValue;
}