// Session 45 — Phase 4: the ticker polls /api/ticker (snapshot exhaust).

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

describe('Ticker live wiring', () => {
  const src = read('components/vyndr/Ticker.tsx');
  it('fetches from /api/ticker (not purely hardcoded)', () => {
    expect(src).toContain("fetch('/api/ticker'");
    expect(src).toContain('setInterval(load');
  });
  it('polls every 30s by default', () => {
    expect(src).toContain('pollMs = 30_000');
  });
  it('falls back to the passed items + keeps current on failure (never blanks)', () => {
    expect(src).toContain('feed && feed.length > 0 ? feed : items');
    expect(src).toContain('keep the current items on failure');
  });
  it('colors event tags (A+/MOVE/SCAN/ALERT)', () => {
    expect(src).toContain("MOVE: 'var(--amber)'");
    expect(src).toContain("ALERT: 'var(--text-0)'");
  });
});

describe('Ticker Next proxy', () => {
  it('exists and forwards to the backend', () => {
    const proxy = read('app/api/ticker/route.ts');
    expect(proxy).toContain('/api/ticker');
    expect(proxy).toContain('BACKEND_URL');
  });
});