import { describe, expect, it } from 'vitest';
import { resolveDay } from '../../src/calendar';
import { getDayLabel } from '../../src/calendar/day-label';

// Direct instruction: on a free Saturday, "Our Lady's Saturday" is really
// only a Simplex-strength standing — a Simplex saint alone loses to it
// and is commemorated instead; anything Semiduplex-or-higher, or a Vigil
// (which keeps forcing its own primacy the same way it does any other
// day), still wins outright and Marian Saturday doesn't apply at all.
describe('Marian Saturday (applyMarianSaturday)', () => {
  it('wins outright, with no commemoration, on a Saturday with nothing else at all going on', () => {
    // Not 2026-10-24: that date is now St. Raphael the Archangel's own
    // fixed day (Duplex majus, added per the full-year sanctoral
    // import), which wins outright. 2026-07-04 is a genuinely clean
    // Saturday with no sanctoral entry at all (not even a commemorated
    // Simplex).
    const day = resolveDay('2026-07-04');
    expect(day.winner).toEqual({ kind: 'temporal', id: 'marian-saturday' });
    expect(day.commemorations).toEqual([]);
    expect(getDayLabel(day).en).toBe("Our Lady's Saturday (Simplex)");
  });

  it('wins over a Simplex saint, who is commemorated instead of winning outright', () => {
    const day = resolveDay('2026-06-20'); // St. Silverius, Pope and Martyr, Simplex
    expect(day.winner).toEqual({ kind: 'temporal', id: 'marian-saturday' });
    expect(day.commemorations).toEqual([
      { kind: 'sanctoral', id: 'st-silverius', name: 'St. Silverius, Pope and Martyr', nameLa: 'Sanctus Silverius, Papa et Martyr', rank: 'simplex' },
    ]);
  });

  it('loses to a Vigil, which keeps forcing its own primacy on a Saturday same as any other day -- Marian Saturday does not apply', () => {
    // 2025-11-29: Vigil of St. Andrew collides with St. Saturninus
    // (Simplex) via calendar/collision.ts (Vigil outranks Simplex there)
    // before Marian Saturday even gets a look-in -- Vigil wins outright,
    // Saturninus is commemorated as the collision's loser, not by Marian
    // Saturday's own demotion rule.
    const day = resolveDay('2025-11-29');
    expect(day.winner).toEqual({
      kind: 'sanctoral',
      id: 'vigil-of-st-andrew',
      name: 'Vigil of St. Andrew',
      nameLa: 'Vigilia Sancti Andreæ',
      rank: 'vigil',
    });
    expect(day.commemorations).toEqual([
      { kind: 'sanctoral', id: 'st-saturninus', name: 'St. Saturninus, Martyr', nameLa: 'Sanctus Saturninus, Martyr', rank: 'simplex' },
    ]);
  });

  it('loses outright to a Semiduplex-or-higher saint -- Marian Saturday does not apply at all', () => {
    const day = resolveDay('2026-09-19'); // St. Januarius, Semiduplex
    expect(day.winner).toEqual({
      kind: 'sanctoral',
      id: 'st-januarius',
      name: 'St. Januarius, Bishop, and Companions, Martyrs',
      nameLa: 'Sanctus Januarius, Episcopus, et Socii, Martyres',
      rank: 'semiduplex',
    });
  });

  it('never applies to a Saturday with real standing of its own (privileged season, Ember days, ...)', () => {
    const day = resolveDay('2026-02-28'); // Lenten Ember Saturday
    expect(day.winner).not.toEqual({ kind: 'temporal', id: 'marian-saturday' });
    expect(day.temporalCategory).toBe('privileged-feria');
  });

  it('never applies while an octave is active, even on an otherwise-eligible Saturday (Pentecost Ember Saturday stays governed by its octave)', () => {
    const day = resolveDay('2026-05-30');
    expect(day.winner).toEqual({ kind: 'temporal', id: 'pentecost-sunday' });
  });

  it('never applies on a weekday other than Saturday', () => {
    const day = resolveDay('2026-10-23'); // the Friday before the clean Marian Saturday above
    expect(day.winner).not.toEqual({ kind: 'temporal', id: 'marian-saturday' });
  });
});
