import { describe, it, expect } from 'vitest';
import { readFileSync, existsSync } from 'node:fs';
import { fileURLToPath } from 'node:url';
import { dirname, resolve } from 'node:path';
import { BRAND, BRAND_GLYPHS } from './brand';

// Assets are referenced by absolute URL (/brand/...) and served from client/public.
const publicDir = resolve(dirname(fileURLToPath(import.meta.url)), '../public');
const toFile = (assetUrl: string) => resolve(publicDir, assetUrl.replace(/^\//, ''));

describe('brand glyph assets', () => {
  // TS proves each BrandGlyphName has an asset path; it can't prove the FILE exists.
  // This is the exact failure mode of "images added but the path is wrong / renamed".
  it('every glyph resolves to a real, non-empty SVG file on disk', () => {
    for (const [name, glyph] of Object.entries(BRAND_GLYPHS)) {
      expect(glyph.asset, `${name} asset path shape`).toMatch(/^\/brand\/glyphs\/.+\.svg$/);
      const file = toFile(glyph.asset);
      expect(existsSync(file), `${name} → ${glyph.asset} missing on disk`).toBe(true);
      expect(readFileSync(file, 'utf8'), `${name} is a valid <svg>`).toMatch(/<svg[\s>]/);
    }
  });

  it('every /brand asset referenced in brand.ts exists on disk', () => {
    for (const [key, url] of Object.entries(BRAND.assets)) {
      if (!url.startsWith('/brand/')) continue; // skip third-party (/img/) icons
      expect(existsSync(toFile(url)), `${key} → ${url} missing on disk`).toBe(true);
    }
  });
});