import type { SqliteAdapter as Database } from '../db/sqlite-adapter.js';
export interface ProjectDetailModel {
    model: string;
    requests: number;
    cost_usd: number;
}
export interface ProjectDetailSession {
    id: string;
    total_cost_usd: number;
    started_at: string;
}
export interface ProjectDetail {
    project_name: string;
    project_path: string;
    total_cost_usd: number;
    total_tokens: number;
    sessions: number;
    daily: Array<{
        date: string;
        cost_usd: number;
    }>;
    models: ProjectDetailModel[];
    top_sessions: ProjectDetailSession[];
}
/** Detailed breakdown for a single project matched by name or path substring. */
export declare function queryProjectDetail(db: Database, nameOrPath: string): ProjectDetail | null;
export type ExportType = 'sessions' | 'requests';
/** Raw rows for a CSV export. CSV formatting stays in the caller. */
export declare function queryExportRows(db: Database, type: ExportType, period: string): Array<Record<string, unknown>>;
export interface RangeStats {
    cost: number;
    requests: number;
    tokens: number;
    sessions: number;
}
/** Cost/request/token/session totals for an inclusive [from,to] date range. */
export declare function queryRangeStats(db: Database, from: string, to: string): RangeStats;
export interface ForecastData {
    day_of_month: number;
    days_in_month: number;
    spent_so_far_usd: number;
    daily_avg_usd: number;
    projected_usd: number;
    last7_daily_avg_usd: number;
    last7_projected_usd: number;
    cheapest_day: {
        date: string;
        cost_usd: number;
    } | null;
    most_expensive_day: {
        date: string;
        cost_usd: number;
    } | null;
}
/** End-of-month projection based on current burn rate. */
export declare function queryForecast(db: Database, now?: Date): ForecastData;
export interface ModelEfficiency {
    model: string;
    input: number;
    output: number;
    cache_read: number;
    cache_write: number;
    requests: number;
    cost: number;
}
/** Per-model token efficiency (output/input ratio, cache hit %, cost/1k out). */
export declare function queryModelEfficiency(db: Database): ModelEfficiency[];
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