/**
 * ─────────────────────────────────────────────
 *  SPB Git — Personal Git Platform
 * ─────────────────────────────────────────────
 *  Author  : Simon-Pierre Boucher
 *  Contact : contact@spboucher.ai
 *  File    : scripts/fetch-fonts.mjs
 *  Purpose : Download self-hosted Inter / JetBrains Mono fonts (web + OG rendering)
 *  License : MIT © Simon-Pierre Boucher
 * ─────────────────────────────────────────────
 */

import { mkdirSync, writeFileSync, existsSync } from 'node:fs';
import { join } from 'node:path';
import process from 'node:process';

const ROOT = new URL('..', import.meta.url).pathname;
const FONTS_DIR = join(ROOT, 'src/web/assets/fonts');
const BEST_EFFORT = process.argv.includes('--best-effort');

/** woff2 → served to browsers; woff → consumed by satori for OG images. */
const FONTS = [
  ['https://cdn.jsdelivr.net/npm/@fontsource/inter@5.1.0/files/inter-latin-400-normal.woff2', 'inter-400.woff2'],
  ['https://cdn.jsdelivr.net/npm/@fontsource/inter@5.1.0/files/inter-latin-500-normal.woff2', 'inter-500.woff2'],
  ['https://cdn.jsdelivr.net/npm/@fontsource/inter@5.1.0/files/inter-latin-600-normal.woff2', 'inter-600.woff2'],
  ['https://cdn.jsdelivr.net/npm/@fontsource/inter@5.1.0/files/inter-latin-700-normal.woff2', 'inter-700.woff2'],
  ['https://cdn.jsdelivr.net/npm/@fontsource/jetbrains-mono@5.1.1/files/jetbrains-mono-latin-400-normal.woff2', 'jetbrains-mono-400.woff2'],
  ['https://cdn.jsdelivr.net/npm/@fontsource/jetbrains-mono@5.1.1/files/jetbrains-mono-latin-600-normal.woff2', 'jetbrains-mono-600.woff2'],
  ['https://cdn.jsdelivr.net/npm/@fontsource/inter@5.1.0/files/inter-latin-400-normal.woff', 'og/inter-400.woff'],
  ['https://cdn.jsdelivr.net/npm/@fontsource/inter@5.1.0/files/inter-latin-700-normal.woff', 'og/inter-700.woff'],
  ['https://cdn.jsdelivr.net/npm/@fontsource/jetbrains-mono@5.1.1/files/jetbrains-mono-latin-400-normal.woff', 'og/jetbrains-mono-400.woff'],
];

mkdirSync(join(FONTS_DIR, 'og'), { recursive: true });

let failures = 0;
for (const [url, name] of FONTS) {
  const dest = join(FONTS_DIR, name);
  if (existsSync(dest)) continue;
  try {
    const res = await fetch(url);
    if (!res.ok) throw new Error(`HTTP ${res.status}`);
    writeFileSync(dest, Buffer.from(await res.arrayBuffer()));
    console.log(`✓ ${name}`);
  } catch (err) {
    failures += 1;
    console.warn(`✗ ${name}: ${err.message}`);
  }
}

if (failures > 0 && !BEST_EFFORT) {
  console.error(`${failures} font(s) failed to download. Re-run: npm run fetch:fonts`);
  process.exit(1);
}
if (failures > 0) {
  console.warn('Continuing despite font download failures (best-effort mode). OG images will use a plain-SVG fallback.');
}