import type { SessionEntry } from "@caupulican/pi-agent-core/session";
import type { DailyUsageTotals, DailyUsageWindow } from "./daily-usage.ts";
export interface CurrentSessionCostTotals {
    ownCost: number;
    subagentCost: number;
    subagentReports: number;
    currentCost: number;
}
export interface CurrentSessionCostAccumulator extends CurrentSessionCostTotals {
    seenSubagentReportIds: Set<string>;
}
export interface SessionCostSummary extends CurrentSessionCostTotals {
    todayCost: number;
    todayOwnCost: number;
    todaySubagentCost: number;
    todayWindow: DailyUsageWindow;
    todayRollover: "local-midnight";
}
export declare function createCurrentSessionCostAccumulator(): CurrentSessionCostAccumulator;
export declare function accumulateCurrentSessionCostsFromEntries(accumulator: CurrentSessionCostAccumulator, entries: readonly SessionEntry[]): CurrentSessionCostAccumulator;
export declare function aggregateCurrentSessionCostsFromEntries(entries: readonly SessionEntry[]): CurrentSessionCostTotals;
export declare function createSessionCostSummary(args: {
    entries?: readonly SessionEntry[];
    dailyTotals: DailyUsageTotals;
    todayWindow: DailyUsageWindow;
    currentTotals?: CurrentSessionCostTotals;
}): SessionCostSummary;
export declare function hasCostSummarySignal(summary: SessionCostSummary): boolean;
export declare function hasSubagentCostSignal(summary: Pick<SessionCostSummary, "subagentReports" | "subagentCost">): boolean;
export declare function formatFooterCostParts(summary: SessionCostSummary, precision?: number, options?: {
    subscription?: boolean;
}): string[];
export declare function formatStatusCostSummary(summary: SessionCostSummary, precision?: number): string;
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