import type { OAuth2Client } from 'google-auth-library';
export interface YouTubeContentInsightsInput {
    expectedChannelId: string;
    startDate: string;
    endDate: string;
    maxVideos?: number;
    minViews?: number;
}
export declare function comparisonPeriods(startDate: string, endDate: string): {
    current: {
        startDate: string;
        endDate: string;
        inclusiveDays: number;
    };
    previous: {
        startDate: string;
        endDate: string;
        inclusiveDays: number;
    };
};
export declare function getYouTubeContentInsights(auth: OAuth2Client, input: YouTubeContentInsightsInput): Promise<{
    status: string;
    channel: {
        id: string;
        title: string;
    };
    periods: {
        current: {
            startDate: string;
            endDate: string;
            inclusiveDays: number;
        };
        previous: {
            startDate: string;
            endDate: string;
            inclusiveDays: number;
        };
    };
    sources: {
        channelTotals: string;
        sampledVideos: string;
        videoMetadata: string;
    };
    channelMetrics: Record<"views" | "estimatedMinutesWatched" | "averageViewDuration" | "subscribersGained", {
        current: number | null;
        previous: number | null;
        absolute: number | null;
        percent: number | null;
    }>;
    sample: {
        requestedMaxVideos: number;
        returnedVideos: number;
        minViewsForEligibility: number;
        sampledVideos: {
            metadata: {
                title: string | null;
                publishedAt: string | null;
                duration: string | null;
            } | null;
            descriptivePer1000Views: {
                estimatedMinutesWatched: number | null;
                subscribersGained: number | null;
            };
            views: number;
            estimatedMinutesWatched: number;
            averageViewDuration: number;
            subscribersGained: number;
            videoId: string;
        }[];
        eligibleVideos: {
            rankByPeriodViews: number;
            videoId: string;
            views: number;
        }[];
    };
    limitations: string[];
    planningHandoff: {
        instruction: string;
        productionRoute: string;
        generatedStoryboard: boolean;
    };
}>;