import { Session } from 'koishi';
/**
 * 撤回消息
 * @param session
 * @param messageId
 * @param time
 */
export declare function recall(session: Session, messageId: string, time: number): Promise<void>;
/**
* 发送选择菜单
* @param session
* @param type_arr
* @param name
* @returns
*/
export declare function switch_menu(session: Session, type_arr: string[], name: string): Promise<string>;
/**
   * grid布局
   * @param session
   * @param type_arr
   * @param name
   * @returns
   */
export declare function switch_menu_grid(session: Session, type_arr: string[], name: string): Promise<string[]>;
export interface ModelUsage {
    prompt_tokens?: number;
    completion_tokens?: number;
    total_tokens?: number;
    prompt_tokens_details?: {
        cached_tokens?: number;
    };
    prompt_cache_hit_tokens?: number;
    prompt_cache_miss_tokens?: number;
}
export interface RunStats {
    inputTokens?: number;
    outputTokens?: number;
    cacheReadTokens?: number;
    cacheWriteTokens?: number;
    reasoningTokenCount?: number;
    totalCost?: number;
    durationMs: number;
}
export declare function modelUsageToRunStats(usage?: ModelUsage): RunStats;
export declare function formatDuration(ms: number): string;
/** 生成附加在图片底部的统计信息(markdown 引用块) */
export declare function statsFooter(stats: RunStats): string;