// Unit: PWA manifest validity (Session 27).
//
// The manifest IS the brand on a user's home screen. A malformed manifest
// silently breaks installability, so guard the required fields + that the
// icon files it references actually exist on disk.

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

const WEB_PUBLIC = path.join(__dirname, '..', '..', 'web', 'public');
const MANIFEST_PATH = path.join(WEB_PUBLIC, 'manifest.json');

describe('PWA manifest', () => {
  let manifest;
  beforeAll(() => {
    manifest = JSON.parse(fs.readFileSync(MANIFEST_PATH, 'utf8'));
  });

  test('is valid JSON with the required installability fields', () => {
    expect(manifest.name).toBeTruthy();
    expect(manifest.short_name).toBe('VYNDR');
    expect(manifest.start_url).toBe('/dashboard');
    expect(manifest.display).toBe('standalone');
    expect(manifest.theme_color).toMatch(/^#[0-9A-Fa-f]{6}$/);
    expect(manifest.background_color).toMatch(/^#[0-9A-Fa-f]{6}$/);
  });

  test('declares app categories', () => {
    expect(Array.isArray(manifest.categories)).toBe(true);
    expect(manifest.categories).toContain('sports');
  });

  test('every PNG icon it references exists on disk', () => {
    const pngs = manifest.icons.filter((i) => i.type === 'image/png');
    expect(pngs.length).toBeGreaterThan(0);
    for (const icon of pngs) {
      const file = path.join(WEB_PUBLIC, icon.src.replace(/^\//, ''));
      expect(fs.existsSync(file)).toBe(true);
    }
  });

  test('provides a maskable icon (Android adaptive)', () => {
    const maskable = manifest.icons.find((i) => (i.purpose || '').includes('maskable'));
    expect(maskable).toBeDefined();
  });

  test('theme + background match the brand dark base', () => {
    // Brand bg-0 is #06060B — keep manifest in lockstep so the splash /
    // status bar don't flash a mismatched color.
    expect(manifest.theme_color.toLowerCase()).toBe('#06060b');
    expect(manifest.background_color.toLowerCase()).toBe('#06060b');
  });
});