using BigRegister.Domain.Intake;

namespace BigRegister.Tests.Domain;

public class IntakeRuleTests
{
  // The arguments ARE the Given (bdd.mdx) — these degenerate to When/Then.

  [Fact]
  public void Below_threshold_with_no_answer_is_incomplete() =>
      Assert.NotNull(IntakePolicy.RejectIncompleteScholing(999, aanvullendeScholing: null, scholingPunten: null));

  [Fact]
  public void At_the_threshold_no_answer_is_required() =>
      // Pins `<` vs `<=` — lageUren's own boundary.
      Assert.Null(IntakePolicy.RejectIncompleteScholing(1000, aanvullendeScholing: null, scholingPunten: null));

  [Fact]
  public void Niet_gevolgd_is_a_complete_answer_below_threshold() =>
      // "nee" is legal — this WP is completeness, not merit (§1's scope).
      Assert.Null(IntakePolicy.RejectIncompleteScholing(500, aanvullendeScholing: false, scholingPunten: null));

  [Fact]
  public void Gevolgd_without_punten_is_incomplete() =>
      Assert.NotNull(IntakePolicy.RejectIncompleteScholing(500, aanvullendeScholing: true, scholingPunten: null));

  [Fact]
  public void Gevolgd_with_zero_punten_is_valid() =>
      Assert.Null(IntakePolicy.RejectIncompleteScholing(500, aanvullendeScholing: true, scholingPunten: 0));

  [Fact]
  public void Gevolgd_with_negative_punten_is_refused() =>
      Assert.NotNull(IntakePolicy.RejectIncompleteScholing(500, aanvullendeScholing: true, scholingPunten: -1));

  [Theory]
  [InlineData(null)] // stale-punten shape (§6): raising uren above threshold left an unanswered
                     // question but punten still set from when it was visible
  [InlineData(false)]
  public void Punten_without_gevolgd_is_refused(bool? aanvullendeScholing) =>
      // uren ABOVE threshold so the "missing answer" branch can't also explain the rejection —
      // this row isolates the "stale punten" rule on its own.
      Assert.NotNull(IntakePolicy.RejectIncompleteScholing(1500, aanvullendeScholing, scholingPunten: 150));
}