'use strict';

/**
 * lib/liveProgress (A1 Session 11) — pure prop-state math + the strip join.
 * The read is locked pre-game; these are proto-outcomes for the ROW-GRAMMAR
 * outcome slot. Color law: green = hit/on-pace/holding, amber = needs/past,
 * NEVER red in-progress.
 */

const {
  propState,
  buildLiveIndex,
  attachLiveProgress,
  gameLiveProximity,
  sortLiveFirst,
} = require('../../web/src/lib/liveProgress');

describe('propState — over semantics', () => {
  test('over already cleared → HIT ✓', () => {
    expect(propState({ side: 'O', line: 1.5, current: 2, progress: 0.5 }))
      .toEqual({ state: 'hit', label: 'HIT ✓', needs: 0 });
  });
  test('current == integer line is NOT a hit (push at best) → needs 2 to beat it', () => {
    const s = propState({ side: 'O', line: 2, current: 2, progress: 0.9 });
    expect(s.state).not.toBe('hit');
    expect(s.needs).toBe(1); // needs 1 more to reach 3 (> 2)
  });
  test('on pace: projection clears floor(line)+1', () => {
    // 1 TB at 50% of the game → projects 2 = clears O1.5.
    expect(propState({ side: 'O', line: 1.5, current: 1, progress: 0.5 }).state).toBe('on_pace');
  });
  test('behind pace → NEEDS N amber state', () => {
    const s = propState({ side: 'O', line: 1.5, current: 0, progress: 0.833 });
    expect(s.state).toBe('needs');
    expect(s.label).toBe('NEEDS 2');
    expect(s.needs).toBe(2);
  });
  test('NEEDS N beats the push on integer lines', () => {
    const s = propState({ side: 'over', line: 2, current: 1, progress: 0.9 });
    expect(s.needs).toBe(2); // to reach 3, not the push at 2
  });
  test('no progress → no pace optimism, stays NEEDS', () => {
    const s = propState({ side: 'O', line: 1.5, current: 1, progress: null });
    expect(s.state).toBe('needs');
    expect(s.needs).toBe(1);
  });
  test('fractional stats (IP) ceil the needs count — over-strict beats over-claimed', () => {
    // 3⅔ IP with 70% of the game gone projects 5.24 < clear-at-6 → behind.
    const s = propState({ side: 'O', line: 5.5, current: 3 + 2 / 3, progress: 0.7 });
    expect(s.state).toBe('needs');
    expect(s.needs).toBe(3); // to 6, from 3.667 → ceil(2.33)
  });
});

describe('propState — under HOLDS-IF semantics (never hit until final)', () => {
  test('count below the line → holding (green), NOT hit', () => {
    const s = propState({ side: 'U', line: 1.5, current: 0, progress: 0.9 });
    expect(s.state).toBe('holding');
    expect(s.label).toBe('HOLDS');
  });
  test('count reached/passed the line → past (amber), NOT a settled miss', () => {
    expect(propState({ side: 'U', line: 1.5, current: 2, progress: 0.5 }).state).toBe('past');
    expect(propState({ side: 'under', line: 2, current: 2, progress: 0.5 }).state).toBe('past');
  });
});

describe('propState — data semantics', () => {
  test('absent current or line → null (never a fabricated state)', () => {
    expect(propState({ side: 'O', line: 1.5, current: null, progress: 0.5 })).toBeNull();
    expect(propState({ side: 'O', line: null, current: 2, progress: 0.5 })).toBeNull();
    expect(propState({})).toBeNull();
  });
  test('a REAL zero is a real value, not absent', () => {
    expect(propState({ side: 'U', line: 0.5, current: 0, progress: 0.5 }).state).toBe('holding');
  });
});

// ── Join fixtures ────────────────────────────────────────────────────
const liveResponse = {
  sport: 'mlb',
  hasLive: true,
  games: [{
    id: '824249',
    home: 'Detroit Tigers',
    away: 'Philadelphia Phillies',
    progress: { label: '▼8th', fraction: 7.5 / 9 },
    players: {
      'bryce harper': { name: 'Bryce Harper', team: 'Philadelphia Phillies', values: { hits: 2, total_bases: 3 } },
      'casey mize': { name: 'Casey Mize', team: 'Detroit Tigers', values: { strikeouts: 5, earned_runs: 3 } },
    },
  }],
};

const strips = [
  {
    player: 'Bryce Harper', team: 'Philadelphia Phillies',
    props: [
      { stat: 'TB', statType: 'total_bases', line: 1.5, side: 'O', grade: 'A-', gradedAt: { line: 1.5 } },
      { stat: 'HR', statType: 'home_runs', line: 0.5, side: 'O', grade: 'B' }, // no box value → absent
    ],
  },
  {
    player: 'Casey Mize', team: 'Detroit Tigers',
    props: [
      { stat: 'Ks', statType: 'strikeouts', line: 5.5, side: 'O', grade: 'B+', gradedAt: { line: 5.5 } },
      { stat: 'ER', statType: 'earned_runs', line: 2.5, side: 'U', grade: 'A', gradedAt: { line: 2.5 } },
    ],
  },
  {
    player: 'Kyle Schwarber', team: 'Philadelphia Phillies',
    props: [{ stat: 'HR', statType: 'home_runs', line: 0.5, side: 'O', grade: 'B-' }], // not in the box at all
  },
];

describe('buildLiveIndex', () => {
  test('flattens response(s) into a nameKey join index', () => {
    const idx = buildLiveIndex(liveResponse);
    expect(idx.hasLive).toBe(true);
    expect(idx.count).toBe(2);
    expect(idx.players['bryce harper'].values.total_bases).toBe(3);
    expect(idx.players['casey mize'].progress.label).toBe('▼8th');
  });
  test('merges an array of per-sport responses', () => {
    const idx = buildLiveIndex([liveResponse, { hasLive: false, games: [] }, null]);
    expect(idx.count).toBe(2);
    expect(idx.hasLive).toBe(true);
  });
  test('empty in → empty index', () => {
    expect(buildLiveIndex(null).count).toBe(0);
    expect(buildLiveIndex([]).players).toEqual({});
  });
});

describe('attachLiveProgress — the strip join', () => {
  const idx = buildLiveIndex(liveResponse);
  const out = attachLiveProgress(strips, idx);

  test('graded prop with a live box value gets the proto-outcome vs the LOCKED line', () => {
    const tb = out[0].props[0];
    expect(tb.live).toBeDefined();
    expect(tb.live.current).toBe(3);
    expect(tb.live.line).toBe(1.5);
    expect(tb.live.state).toBe('hit'); // 3 > 1.5, over already cleared
    expect(tb.live.progressLabel).toBe('▼8th');
  });

  test('under uses HOLDS-IF semantics', () => {
    const er = out[1].props[1];
    expect(er.live.state).toBe('past'); // 3 ER vs U2.5 — line passed, amber
  });

  test('a stat missing from the box → NO live mark (absent, never 0)', () => {
    expect(out[0].props[1].live).toBeUndefined();
  });

  test('a player not in the box at all → strip untouched (same reference)', () => {
    expect(out[2]).toBe(strips[2]);
  });

  test('settled, dead and awaiting props are never touched', () => {
    const settled = [{
      player: 'Bryce Harper', team: 'PHI',
      props: [
        { stat: 'TB', statType: 'total_bases', line: 1.5, side: 'O', grade: 'A-', outcome: { result: 'hit', actual: 3 } },
        { stat: 'Hits', statType: 'hits', line: 0.5, side: 'O', grade: 'B', dead: true },
        { stat: 'HR', statType: 'home_runs', line: 0.5, side: '', grade: null, awaiting: true },
      ],
    }];
    const res = attachLiveProgress(settled, idx);
    expect(res[0].props[0].live).toBeUndefined();
    expect(res[0].props[1].live).toBeUndefined();
    expect(res[0].props[2].live).toBeUndefined();
  });

  test('empty index → strips returned as-is', () => {
    expect(attachLiveProgress(strips, buildLiveIndex(null))).toBe(strips);
    expect(attachLiveProgress(strips, null)).toBe(strips);
  });
});

describe('gameLiveProximity + sortLiveFirst — the slate float', () => {
  const idx = buildLiveIndex(liveResponse);
  // Raw odds props as the Slate carries them + the snapshot grade index.
  const gradeIndex = {
    'bryce harper|total_bases': { grade: 'A-', direction: 'over', line: 1.5, gradedAt: { line: 1.5 } },
    'casey mize|strikeouts': { grade: 'B+', direction: 'over', line: 5.5, gradedAt: { line: 5.5 } },
  };

  test('proximity = current / (floor(line)+1) capped at 1; hit counts 1', () => {
    const harperGame = gameLiveProximity([{ player: 'Bryce Harper', stat_type: 'total_bases' }], gradeIndex, idx);
    expect(harperGame.tracked).toBe(true);
    expect(harperGame.proximity).toBe(1); // 3 TB vs clear-at-2 → capped
    const mizeGame = gameLiveProximity([{ player: 'Casey Mize', stat_type: 'strikeouts' }], gradeIndex, idx);
    expect(mizeGame.tracked).toBe(true);
    expect(mizeGame.proximity).toBeCloseTo(5 / 6, 5);
  });

  test('ungraded or box-absent props are not tracked', () => {
    expect(gameLiveProximity([{ player: 'Kyle Schwarber', stat_type: 'home_runs' }], gradeIndex, idx).tracked).toBe(false);
    expect(gameLiveProximity([{ player: 'Bryce Harper', stat_type: 'home_runs' }], gradeIndex, idx).tracked).toBe(false);
  });

  test('sortLiveFirst floats tracked games by proximity desc, keeps the rest stable', () => {
    const games = [
      { id: 'pre-1' },
      { id: 'mize', s: { tracked: true, proximity: 5 / 6 } },
      { id: 'pre-2' },
      { id: 'harper', s: { tracked: true, proximity: 1 } },
    ];
    const sorted = sortLiveFirst(games, (g) => g.s || { tracked: false, proximity: 0 });
    expect(sorted.map((g) => g.id)).toEqual(['harper', 'mize', 'pre-1', 'pre-2']);
  });

  test('no tracked games → original order untouched', () => {
    const games = [{ id: 'a' }, { id: 'b' }];
    expect(sortLiveFirst(games, () => ({ tracked: false, proximity: 0 })).map((g) => g.id)).toEqual(['a', 'b']);
  });
});