// DS4 (Design v2) — the BILLBOARDS. Screenshot-first surfaces (the timeline is
// customer #1): the STREAKS row, the grade reveal, the CLV reframe, and the /u
// public profile. The .tsx surfaces are asserted against source (plain-JS Jest,
// no TS transform) — same pattern as publicProfilePage / vyndrParityQA. The
// CLV flat-vs-spread decision is a pure fn and is exercised directly.

const fs = require('fs');
const path = require('path');

const ROOT = path.join(__dirname, '..', '..');
const WEB = path.join(ROOT, 'web', 'src');
const read = (rel) => fs.readFileSync(path.join(WEB, rel), 'utf8');

// ── 1. CLV reframe — the pure flat/spread decision (#16) ──────────────────
describe('clvDisplay — flat CLV says so, spread shows bars', () => {
  const { clvMode, isFlatClv, CLV_FLAT_LINE } = require('../../web/src/lib/clvDisplay');

  test('near-flat (73/74 at the close) is FLAT, not a broken histogram', () => {
    const dist = [
      { label: '[-.5,0)', side: 'faded', count: 0 },
      { label: '0', side: 'flat', count: 73 },
      { label: '(0,.5]', side: 'beat', count: 1 },
    ];
    expect(clvMode(dist).mode).toBe('flat');
    expect(isFlatClv(dist)).toBe(true);
  });

  test('real dispersion is SPREAD (the bars are meaningful)', () => {
    const dist = [
      { label: '[-1,-.5)', side: 'faded', count: 8 },
      { label: '[-.5,0)', side: 'faded', count: 6 },
      { label: '0', side: 'flat', count: 5 },
      { label: '(0,.5]', side: 'beat', count: 9 },
      { label: '(.5,1]', side: 'beat', count: 12 },
    ];
    expect(clvMode(dist).mode).toBe('spread');
    expect(isFlatClv(dist)).toBe(false);
  });

  test('null / empty / all-zero → none (renders nothing, never errored)', () => {
    expect(clvMode(null).mode).toBe('none');
    expect(clvMode([]).mode).toBe('none');
    expect(clvMode([{ side: 'flat', count: 0 }, { side: 'beat', count: 0 }]).mode).toBe('none');
  });

  test('the flat line is confident + VOICE-compliant (no jargon, no hype)', () => {
    expect(CLV_FLAT_LINE).toMatch(/grade the outcome, not the close/);
    expect(CLV_FLAT_LINE).not.toMatch(/!/);
    expect(CLV_FLAT_LINE.toLowerCase()).not.toMatch(/bayesian|regression|guarantee/);
  });

  test('the ledger MODEL tab renders the flat line, not a histogram, when flat', () => {
    const src = read('app/ledger/page.tsx');
    expect(src).toContain("import { clvMode, CLV_FLAT_LINE }");
    expect(src).toMatch(/mode === 'flat'/);
    expect(src).toContain('CLV_FLAT_LINE');
    // bars still exist for the spread branch
    expect(src).toContain('CLV DISTRIBUTION');
  });
});

// ── 2. STREAKS row — the Bloomberg alert (#2) ─────────────────────────────
describe('StreaksPanel — one hero figure, real identity, one accent', () => {
  const src = read('components/StreaksPanel.tsx');

  test('uses the real PlayerAvatar entity (not a bare <img>)', () => {
    expect(src).toContain('import PlayerAvatar');
    expect(src).toContain('<PlayerAvatar');
    expect(src).not.toMatch(/<img\b/);
  });

  test('the streak LENGTH is the hero — the largest font in the row', () => {
    // heroNum renders currentStreak and is the biggest fontSize; the player
    // name is demoted well below it.
    expect(src).toMatch(/heroNum[\s\S]*fontSize:\s*38/);
    expect(src).toContain('{s.currentStreak}');
    const heroSize = Number((src.match(/heroNum:[^}]*fontSize:\s*(\d+)/) || [])[1]);
    const nameSize = Number((src.match(/playerName:[^}]*fontSize:\s*(\d+)/) || [])[1]);
    expect(heroSize).toBeGreaterThan(nameSize);
    expect(heroSize).toBeGreaterThanOrEqual(32);
  });

  test('the hero number is mono + tabular (data grammar)', () => {
    expect(src).toMatch(/heroNum:[\s\S]*fontVariantNumeric:\s*'tabular-nums'/);
  });

  test('carries the muted "built vs" lens context', () => {
    expect(src).toContain('built vs');
    expect(src).toContain('builtVs');
  });

  test('ONE severity accent — step-up amber / step-down green', () => {
    expect(src).toContain("diff === 'step up'");
    expect(src).toContain('var(--amber');
    expect(src).toContain("diff === 'step down'");
    expect(src).toContain('var(--g-a');
  });

  test('the grade badge is tier-gated (the READ is the paid layer)', () => {
    expect(src).toMatch(/tier === 'analyst' \|\| tier === 'desk'/);
    expect(src).toContain('<GradeBadge');
  });
});

// ── 3. Grade reveal — sign-colored edge (#3, the color contract) ──────────
describe('GradeResultCard — the letter is hero, edge is sign-colored', () => {
  const src = read('components/vyndr/GradeResultCard.tsx');

  test('a negative edge NEVER renders green — negative = var(--miss)', () => {
    // DS3 superseded DS4's local const with the centralized colorContract
    // enforcer — same semantics (negative → var(--miss)), now via the shared
    // helper. Both the confidence strip and the projection row route edge
    // through edgeColor(d.edge), never a hardcoded green.
    expect(src).toMatch(/import \{ edgeColor.*\} from '@\/lib\/colorContract'/);
    expect(src).toContain('color: edgeColor(d.edge)');
    expect(src).toMatch(/d\.edge != null \? edgeColor\(d\.edge\) : 'var\(--text-2\)'/);
  });

  test('the grade LETTER is still the hero (largest element)', () => {
    expect(src).toMatch(/grade-hero[\s\S]*fontSize: compact \? 92 : 116/);
  });

  test('the MODEL/LINE/EDGE row is mono + tabular (demoted data)', () => {
    expect(src).toMatch(/fontSize: 19[\s\S]*fontVariantNumeric: 'tabular-nums'/);
  });

  test('reveal choreography is reduced-motion safe', () => {
    const proc = read('components/vyndr/ProcessingGrade.tsx');
    expect(proc).toContain("prefers-reduced-motion: reduce");
    expect(proc).toMatch(/setPhase\('card'\)/);
  });
});

// ── 4. /u public profile — the shareable record billboard (#4) ────────────
describe('PublicProfile — the record hero (Session 65: no CLV claim)', () => {
  const src = read('app/u/[handle]/PublicProfile.tsx');

  test('the hit rate is the bold hero figure (large mono tabular)', () => {
    expect(src).toMatch(/fontSize: 56[\s\S]*fontVariantNumeric: 'tabular-nums'/);
    expect(src).toContain('{agg.hit_pct}%');
    expect(src).toContain('HIT RATE');
  });

  // Session 65 — UN-CLAIM. The beat-close figure and the ✓ CLV-VERIFIED badge
  // are GONE from this public surface: both read beat_close_pct, derived from
  // the legacy overwritable closing_line (C4 open). Display removal only — the
  // aggregate and its CLV_CAPTURE_RELIABLE gate in ledgerService are untouched.
  test('no closing-line claim renders on the public record hero', () => {
    expect(src).not.toContain('{agg.beat_close_pct}%');
    expect(src).not.toContain('BEAT CLOSE');
    expect(src).not.toContain('CLV-VERIFIED');
    expect(src).not.toMatch(/clvVerified/);
  });

  test('still honors the n-gate: RECORD BUILDING under min_sample', () => {
    expect(src).toContain('RECORD BUILDING');
    expect(src).toMatch(/settled >= minSample/);
  });

  test('renders real player identity (PlayerAvatar entity)', () => {
    expect(src).toContain('import PlayerAvatar');
    expect(src).toContain('<PlayerAvatar');
  });
});

// ── 5. /u OG image — the record at social crop ────────────────────────────
describe('/u opengraph-image — real record at 1200x630 social crop', () => {
  const src = read('app/u/[handle]/opengraph-image.tsx');

  test('social crop size is preserved (1200x630)', () => {
    expect(src).toMatch(/size = \{ width: 1200, height: 630 \}/);
  });

  test('renders the real hit% when the record is published, and claims no CLV', () => {
    expect(src).toContain('{rec.hit_pct}%');
    // Session 65 — beat-close% + the CLV-VERIFIED eyebrow are un-claimed here.
    expect(src).not.toContain('{rec.beat_close_pct}%');
    expect(src).not.toMatch(/CLV-VERIFIED|CLV-verified/);
    expect(src).toContain('SETTLED RECORD · 30D');
  });

  test('falls back gracefully to an honest tagline when there is no record', () => {
    expect(src).toContain('Every settled read · wins and misses · nothing curated');
  });
});
