/**
 * Platform definitions — mirrored from backend/app/services/platforms.py.
 * Two copies of these regexes (here and in backend extension_service.py)
 * is cheaper than building a shared definition file for two short
 * tables in different runtimes. Keep in sync by hand; reviewers catch
 * drift.
 */

const PLATFORMS = {
  patreon: {
    name: 'Patreon',
    domains: ['.patreon.com', 'www.patreon.com', 'patreon.com'],
    authType: 'cookies',
    color: '#FF424D',
    urlPattern: /^https?:\/\/(www\.)?patreon\.com/,
    // Patreon's `/api/current_user` returns 200 + the logged-in user
    // when authenticated, 401 otherwise. Cheapest definitive check.
    verify: {
      url: 'https://www.patreon.com/api/current_user',
      method: 'GET',
      okStatuses: [200],
    },
  },
  subscribestar: {
    name: 'SubscribeStar',
    domains: [
      '.subscribestar.com',
      '.subscribestar.adult',
      'www.subscribestar.com',
      'subscribestar.com',
      'subscribestar.adult',
    ],
    authType: 'cookies',
    color: '#FFD700',
    urlPattern: /^https?:\/\/(www\.)?subscribestar\.(com|adult)/,
    // No known stable auth-required endpoint that returns a definitive
    // status code; skipping verify so we don't false-positive-fail
    // good cookies. Operator can add later if a clean endpoint surfaces.
  },
  hentaifoundry: {
    name: 'Hentai Foundry',
    domains: ['.hentai-foundry.com', 'www.hentai-foundry.com', 'hentai-foundry.com'],
    authType: 'cookies',
    color: '#9C27B0',
    urlPattern: /^https?:\/\/(www\.)?hentai-foundry\.com/,
    // Mirror gallery-dl's _init_site_filters: HEAD on `?enterAgree=1`.
    // Logged in → 200, logged out → 401. Catches the exact failure mode
    // the backend extractor would hit later.
    verify: {
      url: 'https://www.hentai-foundry.com/?enterAgree=1',
      method: 'HEAD',
      okStatuses: [200],
    },
  },
  discord: {
    name: 'Discord',
    domains: ['.discord.com', 'discord.com'],
    authType: 'token',
    color: '#5865F2',
    urlPattern: /^https?:\/\/(www\.)?discord\.com/,
    note: 'Open Discord in browser to capture token',
  },
  pixiv: {
    name: 'Pixiv',
    domains: ['.pixiv.net', 'www.pixiv.net', 'pixiv.net'],
    authType: 'token',
    color: '#0096FA',
    urlPattern: /^https?:\/\/(www\.)?pixiv\.net/,
    note: 'Click to authenticate via OAuth',
  },
  deviantart: {
    name: 'DeviantArt',
    domains: ['.deviantart.com', 'www.deviantart.com', 'deviantart.com'],
    authType: 'cookies',
    color: '#05CC47',
    urlPattern: /^https?:\/\/(www\.)?deviantart\.com/,
    // DA's logged-in-only endpoints sit behind their internal _napi
    // namespace which shifts; skipping verify until a stable check
    // surfaces. Same posture as SubscribeStar.
  },
};

/**
 * Per-platform artist-page URL patterns — these are STRICTER than
 * urlPattern (which matches any URL on the domain). Used by the content
 * script to decide whether to show the floating "Add as source" button.
 */
const PLATFORM_ARTIST_PATTERNS = {
  patreon:       /^https?:\/\/(www\.)?patreon\.com\/(?!home$|search\b|messages\b|notifications\b|library\b|settings\b|posts\b|c\/)[^/?#]+\/?$/i,
  subscribestar: /^https?:\/\/(www\.)?subscribestar\.(com|adult)\/(?!feed$|messages$|library$)[^/?#]+\/?$/i,
  hentaifoundry: /^https?:\/\/(www\.)?hentai-foundry\.com\/user\/[^/?#]+/i,
  deviantart:    /^https?:\/\/(www\.)?deviantart\.com\/(?!home$|watch\b|tag\b|browse\b)[^/?#]+\/?$/i,
  pixiv:         /^https?:\/\/(www\.)?pixiv\.net\/(en\/)?users\/\d+/i,
};

function getPlatformFromUrl(url) {
  for (const [key, platform] of Object.entries(PLATFORMS)) {
    if (platform.urlPattern.test(url)) return key;
  }
  return null;
}

function isArtistPage(url, platformKey) {
  const pattern = PLATFORM_ARTIST_PATTERNS[platformKey];
  return pattern ? pattern.test(url) : false;
}