'use strict';

/**
 * Which settled rows a forward re-audit may use.
 *
 * The refusal these encode: no measurement on rows produced by the retired
 * ten-game forecaster, and no reconstruction standing in for what was served.
 */

const el = require('../../src/services/model/reAuditEligibility');

const row = (version, date) => ({ model_version: version, game_date: date });
const OLD = 'engine1@2026-07-20';

describe('eligibility is mechanical, not a promise', () => {
  it('accepts only rows carrying the repaired champion marker', () => {
    expect(el.isEligible(row(el.REPAIRED_CHAMPION_VERSION, '2026-08-08'))).toBe(true);
    expect(el.isEligible(row(OLD, '2026-08-08'))).toBe(false);
    expect(el.isEligible(row(null, '2026-08-08'))).toBe(false);
    expect(el.isEligible(null)).toBe(false);
  });

  it('an all-old table blocks every measurement and says why', () => {
    const a = el.assess(Array.from({ length: 500 }, (_, i) => row(OLD, `2026-07-${(i % 28) + 1}`)));
    expect(a.eligible_rows).toBe(0);
    expect(a.blocked_reason).toMatch(/nothing may be measured/);
    for (const v of Object.values(a.ready)) expect(v.ready).toBe(false);
  });

  it('a MIXED table counts only the repaired rows — the invisible trap', () => {
    // Once both generations sit in the same table, a naive count would happily
    // fit a map on a blend of two different forecasters.
    const mixed = [
      ...Array.from({ length: 300 }, (_, i) => row(OLD, `2026-07-${(i % 20) + 1}`)),
      ...Array.from({ length: 30 }, (_, i) => row(el.REPAIRED_CHAMPION_VERSION, `2026-08-${(i % 3) + 8}`)),
    ];
    const a = el.assess(mixed);
    expect(a.total_rows).toBe(330);
    expect(a.eligible_rows).toBe(30);
    expect(a.eligible_dates).toBe(3);
  });
});

describe('thresholds are per-measurement and pre-stated', () => {
  it('unblocks each measurement independently at its own date bar', () => {
    const dates = 10;
    const rows = Array.from({ length: 400 }, (_, i) => row(el.REPAIRED_CHAMPION_VERSION, `2026-08-${(i % dates) + 8}`));
    const a = el.assess(rows);
    expect(a.eligible_dates).toBe(dates);
    expect(a.ready.calibration_refit.ready).toBe(true);
    expect(a.ready.hits_factor_lift.ready).toBe(true);
    // The heavier measurements still wait.
    expect(a.ready.prior_verdict_reaudit.ready).toBe(false);
    expect(a.ready.rbi_lineup_slot_gate.ready).toBe(false);
  });

  it('counts DATES, not rows — the binding scarcity all session', () => {
    const many = Array.from({ length: 5000 }, () => row(el.REPAIRED_CHAMPION_VERSION, '2026-08-08'));
    expect(el.assess(many).ready.calibration_refit.ready).toBe(false);
  });

  it('the thresholds are frozen so they cannot drift', () => {
    expect(Object.isFrozen(el.ACCRUAL)).toBe(true);
  });
});