/**
 * Feature Flags Configuration
 *
 * Defines all feature flags with metadata.
 * Uses build-time obfuscation for production security.
 *
 * Pattern:
 * - Development: Flags easily toggled via Developer Tools (Ctrl+Shift+D)
 * - Production: Flags obfuscated and require permission-based backend query
 * - All flags checked at runtime via useFeatureFlags composable
 *
 * Usage in components:
 * ```javascript
 * const { isEnabled } = useFeatureFlags();
 * if (isEnabled('experimental-search')) { ... }
 * ```
 */

export const FEATURE_FLAGS = {
  // Gamemaster Explorer Features
  EXPERIMENTAL_SEARCH: {
    name: 'experimental-search',
    description: 'Enable experimental search with regex support',
    enabled: false,
    requiredPermission: null,
    tags: ['gamemaster', 'search']
  },

  GAMEMASTER_DIFF_VIEWER: {
    name: 'gamemaster-diff-viewer',
    description: 'Enable diff viewer for gamemaster file comparisons',
    enabled: false,
    requiredPermission: 'gamemaster-advanced',
    tags: ['gamemaster', 'ui']
  },

  GAMEMASTER_BOOKMARKS: {
    name: 'gamemaster-bookmarks',
    description: 'Enable bookmarking feature for favorite gamemasters',
    enabled: false,
    requiredPermission: null,
    tags: ['gamemaster', 'storage']
  },

  // Challonge Test Features
  CHALLONGE_CACHED_TOURNAMENTS: {
    name: 'challonge-cached-tournaments',
    description: 'Cache tournament data for faster loading',
    enabled: false,
    requiredPermission: 'challonge-advanced',
    tags: ['challonge', 'performance']
  },

  CHALLONGE_EXPORT_CSV: {
    name: 'challonge-export-csv',
    description: 'Allow exporting tournament data to CSV',
    enabled: false,
    requiredPermission: null,
    tags: ['challonge', 'export']
  },

  // Developer/Admin Features
  DEVELOPER_TOOLS: {
    name: 'developer-tools',
    description: 'Show developer tools panel (Ctrl+Shift+D)',
    enabled: process.env.NODE_ENV === 'development',
    requiredPermission: null,
    tags: ['developer']
  },

  ADMIN_PANEL: {
    name: 'admin-panel',
    description: 'Show admin panel with system information',
    enabled: false,
    requiredPermission: 'admin',
    tags: ['admin', 'maintenance']
  },

  // Performance Features
  ENABLE_CACHING: {
    name: 'enable-caching',
    description: 'Enable client-side caching for API responses',
    enabled: true,
    requiredPermission: null,
    tags: ['performance']
  },

  // UI Features
  DARK_MODE: {
    name: 'dark-mode',
    description: 'Enable dark mode theme',
    enabled: false,
    requiredPermission: null,
    tags: ['ui', 'theme']
  }
};

/**
 * Get all feature flags
 * @returns {Object} All feature flags
 */
export function getAllFlags() {
  return FEATURE_FLAGS;
}

/**
 * Get flag by name
 * @param {string} name - Flag name
 * @returns {Object|null} Flag object or null if not found
 */
export function getFlag(name) {
  return Object.values(FEATURE_FLAGS).find(flag => flag.name === name) || null;
}

/**
 * Get all flags for a specific tag
 * @param {string} tag - Tag name
 * @returns {Object[]} Array of flags with the tag
 */
export function getFlagsByTag(tag) {
  return Object.values(FEATURE_FLAGS).filter(flag => flag.tags.includes(tag));
}

/**
 * Check if flag requires specific permission
 * @param {string} name - Flag name
 * @returns {string|null} Required permission or null if no permission required
 */
export function getFlagPermission(name) {
  const flag = getFlag(name);
  return flag ? flag.requiredPermission : null;
}