import { Observable } from 'rxjs';
import { SubtrakService } from './subtrak.service';
import { RecordUsageInput, UsageSummary, PaginatedResponse } from '../models';
import * as i0 from "@angular/core";
/**
 * Service for tracking and recording metered usage
 *
 * @example
 * ```typescript
 * constructor(private usage: UsageService) {}
 *
 * // Record single usage event
 * this.usage.recordUsage({
 *   meterId: 'meter_api_calls',
 *   customerId: 'cus_123',
 *   eventName: 'api_call',
 *   properties: { endpoint: '/api/data', method: 'GET' },
 *   value: 1
 * }).subscribe();
 *
 * // Get current usage
 * this.usage.getCurrentUsage('meter_api_calls', 'cus_123').subscribe(summary => {
 *   console.log('Total usage:', summary.totalUsage);
 * });
 * ```
 */
export declare class UsageService {
    private subtrak;
    constructor(subtrak: SubtrakService);
    /**
     * Record a single usage event
     *
     * @param input - Usage event data
     * @returns Observable of void
     */
    recordUsage(input: RecordUsageInput): Observable<void>;
    /**
     * Record multiple usage events in a single request
     *
     * @param events - Array of usage event data
     * @returns Observable of void
     */
    batchRecordUsage(events: RecordUsageInput[]): Observable<void>;
    /**
     * Get current usage summary for a meter and customer
     *
     * @param meterId - Meter ID
     * @param customerId - Customer ID
     * @returns Observable of usage summary
     */
    getCurrentUsage(meterId: string, customerId: string): Observable<UsageSummary>;
    /**
     * Get usage history for a meter
     *
     * @param params - Query parameters
     * @returns Observable of usage summaries
     */
    getUsageHistory(params: {
        meterId?: string;
        customerId?: string;
        subscriptionId?: string;
        periodStart?: string;
        periodEnd?: string;
        page?: number;
        limit?: number;
    }): Observable<PaginatedResponse<UsageSummary>>;
    /**
     * Get usage summary by subscription
     *
     * @param subscriptionId - Subscription ID
     * @returns Observable of usage summaries
     */
    getSubscriptionUsage(subscriptionId: string): Observable<UsageSummary[]>;
    /**
     * Get usage for a specific meter and subscription
     *
     * @param meterId - Meter ID
     * @param subscriptionId - Subscription ID
     * @returns Observable of usage summary
     */
    getMeterUsage(meterId: string, subscriptionId: string): Observable<UsageSummary>;
    /**
     * Helper method to track API calls
     *
     * @param customerId - Customer ID
     * @param endpoint - API endpoint called
     * @param method - HTTP method
     * @param metadata - Additional metadata
     * @returns Observable of void
     */
    trackApiCall(customerId: string, endpoint: string, method?: string, metadata?: Record<string, any>): Observable<void>;
    /**
     * Helper method to track data exports
     *
     * @param customerId - Customer ID
     * @param format - Export format (csv, json, etc.)
     * @param rowCount - Number of rows exported
     * @param metadata - Additional metadata
     * @returns Observable of void
     */
    trackDataExport(customerId: string, format: string, rowCount: number, metadata?: Record<string, any>): Observable<void>;
    /**
     * Helper method to track storage usage
     *
     * @param customerId - Customer ID
     * @param sizeBytes - Size in bytes
     * @param fileType - Type of file
     * @param metadata - Additional metadata
     * @returns Observable of void
     */
    trackStorageUsage(customerId: string, sizeBytes: number, fileType: string, metadata?: Record<string, any>): Observable<void>;
    static ɵfac: i0.ɵɵFactoryDeclaration<UsageService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<UsageService>;
}