import { HubSpotEmailCampaign, HubSpotCampaignMetrics, HubSpotSearchResult } from '../types';
export declare function createEmailCampaignsService(accessToken: string): {
    searchEmailCampaigns(filters?: any, limit?: number, after?: string): Promise<HubSpotSearchResult<HubSpotEmailCampaign>>;
    getEmailCampaign(campaignId: string): Promise<HubSpotEmailCampaign>;
    getCampaignMetrics(year: number): Promise<HubSpotCampaignMetrics[]>;
    getCampaignPerformance(campaignId: string, startDate: string, endDate: string): Promise<any>;
    groupMetricsByMonth(performanceData: any, year: number): HubSpotCampaignMetrics[];
    generateMockCampaignData(campaignId: string, startDate: string, endDate: string): any;
    generateMockMonthlyBreakdown(startDate: string, endDate: string): any[];
    generateMockMonthData(monthKey: string): any;
    getEmailStatisticsHistogram(dateStr: string, interval?: string): Promise<any>;
    validateInterval(interval: string): void;
    testCampaignSearch(): Promise<void>;
    generateTimeChunks(startDate: Date, endDate: Date, interval: string): any[];
    processTimeChunks(timeChunks: any[], interval: string): Promise<any>;
    processTimeChunk(chunk: any, interval: string): Promise<any>;
    callStatisticsAPI(startTimestamp: string, endTimestamp: string): Promise<any>;
    extractStatisticsFromResponse(responseData: any): {
        sent: number;
        open: number;
        openRate: number;
    };
    logAdditionalData(responseData: any): void;
    formatBreakdown(periodLabel: string, sent: number, open: number, openRate: number): string;
    handleChunkError(chunk: any, chunkError: any, interval: string): Promise<any>;
    buildHistogramResponse(results: any, timeChunks: any[], startDate: Date, endDate: Date, interval: string): any;
    generateMonthlyChunks(startDate: Date, endDate: Date): any[];
    generateQuarterlyChunks(startDate: Date, endDate: Date): any[];
    getFallbackEmailStatistics(startDate: Date, endDate: Date, periodLabel: string): Promise<any>;
};
//# sourceMappingURL=email-campaigns.d.ts.map