import { ISocialAuthProviderService } from '../interfaces/social-auth-provider.interface';
/**
 * Social Provider Registry (Internal)
 *
 * Internal registry service for managing social authentication providers.
 * This is an implementation detail used by SocialAuthService and provider modules.
 *
 * **Note:** This is an internal service. Consumer applications should use
 * `SocialAuthService` instead, which provides a high-level API for social authentication.
 *
 * **Key Features:**
 * - Dynamic provider registration without hardcoded names
 * - Provider lookup by name
 * - Auto-registration when provider modules are imported
 *
 * **How it works:**
 * Provider modules (Google, Apple, Facebook, etc.) automatically register themselves
 * with this registry using OnModuleInit when their modules are imported.
 *
 * @internal
 *
 * @example
 * ```typescript
 * // Provider modules auto-register
 * onModuleInit() {
 *   this.providerRegistry.registerProvider(this);
 * }
 *
 * // SocialAuthService uses the registry internally
 * const provider = this.providerRegistry.getProvider('google');
 * ```
 */
export declare class SocialProviderRegistry {
    private readonly providers;
    /**
     * Register a social auth provider
     *
     * Called automatically by provider modules during initialization.
     * Provider names must be unique.
     *
     * @param provider - Provider service instance (must have providerName property)
     *
     * @example
     * ```typescript
     * // In provider module OnModuleInit:
     * constructor(private providerRegistry: SocialProviderRegistry) {}
     *
     * onModuleInit() {
     *   this.providerRegistry.registerProvider(this);
     * }
     * ```
     */
    registerProvider(provider: ISocialAuthProviderService): void;
    /**
     * Get a provider by name
     *
     * @param name - Provider name (e.g., 'google', 'apple', 'facebook')
     * @returns Provider service instance
     * @throws {NAuthException} If provider is not registered
     *
     * @example
     * ```typescript
     * const googleProvider = this.providerRegistry.getProvider('google');
     * const authUrl = await googleProvider.getAuthUrl();
     * ```
     */
    getProvider(name: string): ISocialAuthProviderService;
    /**
     * Check if a provider is registered
     *
     * @param name - Provider name
     * @returns True if provider exists
     *
     * @example
     * ```typescript
     * if (this.providerRegistry.hasProvider('github')) {
     *   // Use GitHub provider
     * }
     * ```
     */
    hasProvider(name: string): boolean;
    /**
     * Get all registered provider names
     *
     * @returns Array of provider names
     *
     * @example
     * ```typescript
     * const providers = this.providerRegistry.listProviders();
     * // ['google', 'apple', 'facebook']
     * ```
     */
    listProviders(): string[];
}
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