import type { LogEntry } from '../core/logger.js';
import { RingBuffer } from './ring-buffer.js';
export interface ToolStats {
    tool: string;
    calls: number;
    errors: number;
    totalDurationMs: number;
    minDurationMs: number;
    maxDurationMs: number;
    lastCalled: string;
}
export interface TimeSeriesBucket {
    minute: string;
    calls: number;
    errors: number;
    totalDurationMs: number;
    count: number;
}
export interface DashboardState {
    startTime: string;
    mode: string;
    projectPath: string;
    totalCalls: number;
    totalErrors: number;
    toolStats: Map<string, ToolStats>;
    timeSeries: TimeSeriesBucket[];
    recentLogs: RingBuffer<LogEntry>;
}
export declare class Aggregator {
    private totalCalls;
    private totalErrors;
    private toolStats;
    private timeSeriesBuf;
    private timeSeriesMap;
    private recentLogs;
    private mode;
    private projectPath;
    private startTime;
    private byProject;
    private projectAggregate;
    /** A-12 幽灵清理同源:桶被 RingBuffer 挤出后 map 仍持引用,后续同 key 条目会并入
     *  幽灵桶(增量不回 buf),读取侧清理时整桶丢失。除 getState/getStateFor 读取侧外,
     *  process 写入侧也前置调用(Task 7 交接注意 c),保证"挤出后再撞同 key"落新桶。
     *  O(30) 开销可忽略;顺带保证 map 规模受 buf 容量约束(无读取时也不无界增长)。 */
    private evictGhostTimeSeries;
    process(entry: LogEntry): void;
    getState(): DashboardState;
    getProjectKeys(): string[];
    /** per-project 视图(设计 §8.1):结构与 getState() 同构(含 A-12 幽灵清理)。
     *  recentLogs 共享全局日志流(不按项目复制,省内存)。 */
    getStateFor(project: string): DashboardState;
    getTopTools(n: number): ToolStats[];
}