.NET · Kredi ön değerlendirmesi

using System.Text.Json;
using Sigillum.Finans.Sdk;

var builder = WebApplication.CreateBuilder(args);
var config = Path.GetFullPath(Environment.GetEnvironmentVariable("SIGILLUM_CONFIG")
    ?? throw new InvalidOperationException("SIGILLUM_CONFIG mutlak dosya yolunu ayarlayın."));
builder.Services.AddSigillum(config);
builder.Services.AddHttpClient();
var app = builder.Build();
app.UseSigillum();

app.MapPost("/loans/evaluate", (LoanInput input, SigillumClient observer) =>
{
    if (input.Amount <= 0 || input.Months <= 0 || input.MonthlyIncome <= 0)
        return Results.BadRequest(new { error = "Tutar, ay ve gelir pozitif olmalıdır." });
    observer.SetReferences(new SdkReferences(
        SessionRef: input.RequestRef,
        External: [new SdkExternalReference("demo.loan", input.RequestRef)]));

    // Sentetik öğretim kuralı: faiz/masraf içermez; gerçek kredi kararı değildir.
    using var step = observer.BeginStep("affordability-rule");
    var payment = decimal.Round(input.Amount / input.Months, 2);
    var ratio = payment / input.MonthlyIncome;
    var outcome = new { input.RequestRef, monthlyPayment = payment,
        incomeRatio = ratio, eligible = ratio <= 0.35m, demonstration = true };
    observer.Policy(JsonSerializer.SerializeToUtf8Bytes(new {
        name = "demo-income-ratio", version = "1", threshold = 0.35m }));
    observer.Explanation(JsonSerializer.SerializeToUtf8Bytes(new {
        method = "deterministic-demo", reason = "monthlyPayment / monthlyIncome",
        value = ratio, threshold = 0.35m }));
    observer.Custom("loan.result", JsonSerializer.SerializeToUtf8Bytes(outcome));
    observer.Source(JsonSerializer.SerializeToUtf8Bytes(new {
        reference = input.RequestRef, type = "demo-result" }),
        [new SdkAttachment("result", "application/json", "comparison.originalContent",
            JsonSerializer.SerializeToUtf8Bytes(outcome))]);
    return Results.Ok(outcome);
});
app.MapGet("/sdk-status", (SigillumClient sdk) => sdk.Status);
app.Run("http://127.0.0.1:5108");
record LoanInput(string RequestRef, decimal Amount, int Months, decimal MonthlyIncome);

<Project Sdk="Microsoft.NET.Sdk.Web">
  <PropertyGroup><TargetFramework>net8.0</TargetFramework><Nullable>enable</Nullable><ImplicitUsings>enable</ImplicitUsings></PropertyGroup>
  <ItemGroup><PackageReference Include="Sigillum.Finans.Sdk.AspNetCore" Version="0.11.0" /></ItemGroup>
</Project>