Microsoft RulesEngine Demo

Program.cs

using Newtonsoft.Json;
using RulesEngine.Models;

while (true)
{
    string text = System.IO.File.ReadAllText(@"./workflow.json");
    var workflowRules = JsonConvert.DeserializeObject<Workflow[]>(text);

    var reSettings = new ReSettings()
    {
        CustomTypes = new[] { typeof(WageResult) }
    };

    var rulesEngine = new RulesEngine.RulesEngine(workflowRules, reSettings);
    

    var user = new RuleParameter("User", new { Id = 64624, Wage = 0.2, MaxWage = 5000 , PanelType = 1});
    var client = new RuleParameter("Client", new { Id = 4534534, Wage = 0.3, MaxWage = 2000});
    var payment = new RuleParameter("Payment", new { Id = 4534534, Amount = 50000});
    
    var results = await rulesEngine.ExecuteAllRulesAsync("Wage", user, client, payment);

    var max= results.Select(x => x.ActionResult.Output as WageResult).Select(x => x?.Priority).Max();
    var result = results.SingleOrDefault(x => (x.ActionResult.Output as WageResult)?.Priority == max);
    
    Console.WriteLine(JsonConvert.SerializeObject(result.ActionResult.Output));
    Console.ReadKey();
}

public class WageResult
{
    public double Wage { get; set; }
    public int Priority { get; set; }
}

workflow.json

[
  {
    "WorkflowName": "Wage",
    "Rules": [
      {
        "RuleName": "10Per",
        "Operator": "Or",
        "Rules":[
          {
            "RuleName": "clienthave10per",
            "Expression":"Client.Wage = 0.3" // more on https://dynamic-linq.net/expression-language
          },
          {
            "RuleName": "userhave10per",
            "Expression":"User.Wage = 0.1"
          }
        ],
        "Actions": {
          "OnSuccess": {
            "Name": "OutputExpression", 
            "Context": {  
              "Expression": "new WageResult (Payment.Amount * 0.1 as Wage, 5000 as Priority)" // more on https://dynamic-linq.net/expression-language
            }
          }
        }
      },
      {
        "RuleName": "20Per",
        "Operator": "Or",
        "Rules":[
          {
            "RuleName": "client have 20per ",
            "Expression":"Client.Wage = 0.2"
          },
          {
            "RuleName": "user have 20per",
            "Expression":"User.Wage = 0.2"
          }
        ],
        "Actions": {
          "OnSuccess": {
            "Name": "OutputExpression",
            "Context": {
              "Expression": "new WageResult (iif(Payment.Amount * 0.2 > 5000 , 5000, Payment.Amount * 0.2)  as Wage, 2222 as Priority)"
            }
          }
        }
      }
    ]
  }
]