import type { DailySnapshot, AnalyticsSummary, ModelPricing } from './analytics-types.js';
export declare function estimateCost(model: string, inputTokens: number, outputTokens: number): number;
export declare class AnalyticsService {
    /** Record a new chat session. */
    recordChat(): Promise<void>;
    /** Record token usage from an LLM call. */
    recordTokens(model: string, inputTokens: number, outputTokens: number): Promise<void>;
    /** Record a skill execution. */
    recordSkillRun(skillName: string, success: boolean): Promise<void>;
    /** Record an entity creation event. */
    recordEntityCreated(entityType: string): Promise<void>;
    /** Snapshot current entity counts (called periodically, e.g. by cron or at startup). */
    snapshotEntityCounts(counts: Record<string, number>): Promise<void>;
    /** Get the daily snapshot for a specific date. */
    getDay(date: string): Promise<DailySnapshot | null>;
    /** Get today's snapshot. */
    getToday(): Promise<DailySnapshot>;
    /** Get all daily snapshots over the last N days. */
    getDays(days?: number): Promise<DailySnapshot[]>;
    /** Get an aggregated summary over the last N days. */
    getSummary(days?: number): Promise<AnalyticsSummary>;
    /** Get pricing table for reference. */
    getModelPricing(): Record<string, ModelPricing>;
}
export declare function getAnalyticsService(): AnalyticsService;
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