import { ConversionAPIConfig, ServerEventData, EventResponse, UserData, CustomData, EventName } from './types';
/**
 * Meta Conversion API server-side tracker
 * Self-contained implementation inspired by facebook-nodejs-business-sdk patterns
 * Handles server-side tracking using Facebook's Conversion API without external dependencies
 */
export declare class MetaConversionTracker {
    private config;
    private retryAttempts;
    private retryDelay;
    private baseUrl;
    constructor(config: ConversionAPIConfig);
    /**
     * Make HTTP request to Facebook Conversion API
     */
    private makeRequest;
    /**
     * Generate HMAC-SHA256 signature for app secret proof
     */
    private generateSignature;
    /**
     * Send a single event to Facebook Conversion API
     */
    sendEvent(eventData: ServerEventData): Promise<EventResponse>;
    /**
     * Send multiple events in a batch
     */
    sendBatchEvents(events: ServerEventData[]): Promise<EventResponse>;
    /**
     * Create server event object
     */
    private createServerEvent;
    /**
     * Create and populate user data object
     */
    private createUserData;
    /**
     * Create custom data object
     */
    private createCustomData;
    /**
     * Transform API response to our format
     */
    private transformResponse;
    /**
     * Validate server event data
     */
    private validateServerEventData;
    /**
     * Test connection to Facebook Conversion API
     */
    testConnection(): Promise<{
        success: boolean;
        details?: unknown;
        error?: string;
    }>;
    /**
     * Validate pixel access
     */
    validatePixelAccess(): Promise<{
        valid: boolean;
        permissions?: string[];
        error?: string;
    }>;
    /**
     * Get recommended events for business type
     */
    getRecommendedEvents(businessType: 'ecommerce' | 'saas' | 'lead_generation' | 'content' | 'app'): EventName[];
    /**
     * Quick tracking methods
     */
    trackPageView(userData?: UserData, customData?: CustomData): Promise<EventResponse>;
    trackPurchase(value: number, currency?: string, userData?: UserData, additionalData?: Partial<CustomData>): Promise<EventResponse>;
    trackLead(userData?: UserData, customData?: CustomData): Promise<EventResponse>;
    trackAddToCart(contentIds: string[], value?: number, currency?: string, userData?: UserData, additionalData?: Partial<CustomData>): Promise<EventResponse>;
    trackViewContent(contentId: string, contentType?: string, value?: number, currency?: string, userData?: UserData, additionalData?: Partial<CustomData>): Promise<EventResponse>;
    /**
     * Update configuration
     */
    updateConfig(newConfig: Partial<ConversionAPIConfig>): void;
    /**
     * Get current configuration (without sensitive data)
     */
    getConfig(): Record<string, unknown>;
}