import type { AppMode } from './types';

/**
 * Detect the current app mode
 */
export function detectMode(): AppMode {
  // Check explicit mode from env
  const envMode = import.meta.env.VITE_MODE;
  if (envMode === 'standalone' || envMode === 'embedded') {
    return envMode;
  }
  
  // Default to library mode
  // Note: Embedded SDK mode is just library mode with RemoteAuthProvider
  return 'library';
}

/**
 * Check if origin is allowed (for CORS configuration)
 */
export function isOriginAllowed(origin: string, allowedOrigins: string[]): boolean {
  if (allowedOrigins.includes('*')) return true;
  return allowedOrigins.some(allowed => {
    // Exact match
    if (allowed === origin) return true;
    
    // Wildcard subdomain match (e.g., "*.example.com")
    if (allowed.startsWith('*.')) {
      const domain = allowed.slice(2);
      return origin.endsWith(domain);
    }
    
    return false;
  });
}

/**
 * Get Keycloak configuration from environment
 */
export function getKeycloakConfig() {
  return {
    url: import.meta.env.VITE_KEYCLOAK_URL || '',
    realm: import.meta.env.VITE_KEYCLOAK_REALM || '',
    clientId: import.meta.env.VITE_KEYCLOAK_CLIENT_ID || '',
  };
}

/**
 * Get allowed origins from environment
 */
export function getAllowedOrigins(): string[] {
  const origins = import.meta.env.VITE_ALLOWED_ORIGINS || '*';
  return origins.split(',').map((o: string) => o.trim());
}