import type { InsightsSummary } from '@n8n/api-types';
import { Logger } from 'n8n-core';
import type { ExecutionLifecycleHooks } from 'n8n-core';
import { type IRun } from 'n8n-workflow';
import { SharedWorkflowRepository } from '../../databases/repositories/shared-workflow.repository';
import { InsightsRaw } from '../../modules/insights/database/entities/insights-raw';
import type { PeriodUnit } from './database/entities/insights-shared';
import { InsightsByPeriodRepository } from './database/repositories/insights-by-period.repository';
import { InsightsRawRepository } from './database/repositories/insights-raw.repository';
type BufferedInsight = Pick<InsightsRaw, 'type' | 'value' | 'timestamp'> & {
    workflowId: string;
    workflowName: string;
};
export declare class InsightsService {
    private readonly sharedWorkflowRepository;
    private readonly insightsByPeriodRepository;
    private readonly insightsRawRepository;
    private readonly logger;
    private readonly cachedMetadata;
    private compactInsightsTimer;
    private bufferedInsights;
    private flushInsightsRawBufferTimer;
    private isAsynchronouslySavingInsights;
    private flushesInProgress;
    constructor(sharedWorkflowRepository: SharedWorkflowRepository, insightsByPeriodRepository: InsightsByPeriodRepository, insightsRawRepository: InsightsRawRepository, logger: Logger);
    startBackgroundProcess(): void;
    stopBackgroundProcess(): void;
    private startCompactionScheduler;
    private stopCompactionScheduler;
    private startFlushingScheduler;
    private stopFlushingScheduler;
    shutdown(): Promise<void>;
    workflowExecuteAfterHandler(ctx: ExecutionLifecycleHooks, fullRunData: IRun): Promise<void>;
    saveInsightsMetadataAndRaw(insightsRawToInsertBuffer: Set<BufferedInsight>): Promise<void>;
    flushEvents(): Promise<void>;
    compactInsights(): Promise<void>;
    compactRawToHour(): Promise<number>;
    compactHourToDay(): Promise<number>;
    compactDayToWeek(): Promise<number>;
    getInsightsSummary({ periodLengthInDays, }: {
        periodLengthInDays: number;
    }): Promise<InsightsSummary>;
    getInsightsByWorkflow({ maxAgeInDays, skip, take, sortBy, }: {
        maxAgeInDays: number;
        skip?: number;
        take?: number;
        sortBy?: string;
    }): Promise<{
        count: number;
        data: {
            workflowId: string;
            projectId: string;
            workflowName: string;
            failed: number;
            projectName: string;
            succeeded: number;
            total: number;
            failureRate: number;
            runTime: number;
            averageRunTime: number;
            timeSaved: number;
        }[];
    }>;
    getInsightsByTime({ maxAgeInDays, periodUnit, }: {
        maxAgeInDays: number;
        periodUnit: PeriodUnit;
    }): Promise<{
        date: string;
        values: {
            total: number;
            succeeded: number;
            failed: number;
            failureRate: number;
            averageRunTime: number;
            timeSaved: number;
        };
    }[]>;
}
export {};