import { type SessionEntry } from "@caupulican/pi-agent-core/session";
export type DailyUsageWindow = {
    startMs: number;
    endMs: number;
};
export type DailyUsageTotals = {
    ownCost: number;
    spawnedCost: number;
    totalCost: number;
    input: number;
    output: number;
    cacheRead: number;
    cacheWrite: number;
    totalTokens: number;
    sessions: number;
    reports: number;
};
export declare function aggregateDailyUsageFromEntries(entries: readonly SessionEntry[], window: DailyUsageWindow): DailyUsageTotals;
export interface LiveSessionDailyUsageSource {
    filePath: string;
    entries: readonly SessionEntry[];
}
export declare function aggregateDailyUsageFromSessionFiles(sessionDir: string, window: DailyUsageWindow, liveSession?: LiveSessionDailyUsageSource): DailyUsageTotals;
export declare function aggregateDailyUsageFromSessionRoot(sessionRoot: string, window: DailyUsageWindow, liveSession?: LiveSessionDailyUsageSource): DailyUsageTotals;
export declare function formatDailyUsageBreakdown(totals: DailyUsageTotals, formatLabel?: (label: string) => string): string;
export declare function getLocalDayWindow(now?: Date): DailyUsageWindow;
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