using System;

using System.Linq;

using System.Threading.Tasks;

using System.Collections.Generic;

using RulesEngine.Models;

​

public class Program

{

    public async static Task Main()

    {

        var items = new List<Guid> { Guid.NewGuid() };

        var workFlow = BuildExceptionWorkflow();

​

        // Execute rules engine

        var rulesEngine = new RulesEngine.RulesEngine();

​

        rulesEngine.AddOrUpdateWorkflow(workFlow);

​

        List<RuleResultTree> results = await rulesEngine.ExecuteAllRulesAsync(workFlow.WorkflowName, items);

​

        var exceptions = results

            .Where(r => r.ChildResults.Any(x => !string.IsNullOrWhiteSpace(x.ExceptionMessage)));

​

        Console.WriteLine(rulesEngine.GetType().Assembly.ToString());

        Console.WriteLine("Rule Exception Count: {0}", exceptions.Count());

        if (exceptions.Any()){

            Console.WriteLine("Rule Exception: {0}", exceptions.First().ChildResults.First().ExceptionMessage);

        }

        Console.WriteLine("Rule IsSuccess: {0}", results.First().IsSuccess);

    }

    private static Workflow BuildExceptionWorkflow()

    {

        var workFlow = new Workflow

        {

            WorkflowName = "workflow",

            Rules = new List<Rule>

            {

                new()

                {

                    Enabled = true,

                    RuleName = "InsertBankAccount",

                    Operator = "And",

                    Rules = new List<Rule> {new()

                        {

                            RuleName = "InsertBankAccountExpected",

                            Expression = "\"Sample\".Substring(-5)",

                            ErrorMessage = "Expected Completed Status."

                        }

                    },

                }

            }

        };

        return workFlow;

    }

}