/**
 * Session 64 — ESPN team-statistics shape regression.
 *
 * `results.stats` is an OBJECT carrying `categories[]`, not an array. The old
 * parser did `for...of` on it and threw "buckets is not iterable" for EVERY
 * team (verified live: captured 0, errored 15/15). It was invisible because
 * refreshTeamStats had no production callers until S63 wired it in.
 */
const { __internals } = require('../../src/services/intelligence/teamStatsCache');
const { normalize } = __internals;

// The real ESPN shape, trimmed.
const CURRENT_SHAPE = {
  results: {
    stats: {
      categories: [
        { name: 'general', stats: [{ name: 'avgRebounds', value: 33.8 }] },
        { name: 'offensive', stats: [{ name: 'fieldGoalPct', value: 47.35 }, { name: 'avgPoints', value: 84.2 }] },
        { name: 'defensive', stats: [{ name: 'avgBlocks', value: 4.1 }] },
      ],
    },
  },
};

// The legacy array shape must keep working.
const LEGACY_SHAPE = {
  results: { stats: [{ stats: [{ name: 'fieldGoalPct', value: 44.0 }] }] },
};

describe('ESPN team-statistics parsing', () => {
  test('does not throw on the CURRENT object+categories shape', () => {
    expect(() => normalize('wnba', CURRENT_SHAPE)).not.toThrow();
  });

  test('extracts stats that exist in the current shape', () => {
    expect(normalize('wnba', CURRENT_SHAPE).team_fg_pct).toBeCloseTo(47.35, 1);
  });

  test('still parses the legacy array shape', () => {
    expect(normalize('wnba', LEGACY_SHAPE).team_fg_pct).toBeCloseTo(44.0, 1);
  });

  test('missing/empty payloads degrade to nulls, never throw', () => {
    expect(() => normalize('wnba', {})).not.toThrow();
    expect(() => normalize('wnba', null)).not.toThrow();
  });

  test('DOCUMENTS THE GAP: the endpoint carries no defensive-strength metric, so opponent rank stays underivable', () => {
    const n = normalize('wnba', CURRENT_SHAPE);
    expect(n.defensive_rating).toBeNull();
    expect(n.opponent_ppg).toBeNull();
    // If this test ever fails because these populate, the opponent-rank factor
    // can be revived — see specs/audit-data/grade-collapse.md.
  });
});