import { StorageService } from './storage.service.js';
export interface TraceLifecycleConfig {
    maxDurationSeconds: number;
    retentionHours: number;
    maxBufferSizeMB: number;
    autoCleanup: boolean;
}
export declare const DEFAULT_TRACE_LIFECYCLE_CONFIG: TraceLifecycleConfig;
export interface TraceFileInfo {
    path: string;
    name: string;
    sizeBytes: number;
    createdAt: Date;
    ageHours: number;
}
export declare class TraceBuffer {
    private buffer;
    private currentSizeBytes;
    private readonly maxSizeBytes;
    constructor(maxSizeMB: number);
    add(event: unknown): boolean;
    getEvents(): unknown[];
    clear(): void;
    getSizeBytes(): number;
    getSizeMB(): number;
    getEventCount(): number;
    private estimateSize;
}
export declare class TraceLifecycleService {
    private readonly storageService;
    private config;
    private traceBuffer;
    private traceStartTime;
    constructor(storageService: StorageService);
    configure(config: Partial<TraceLifecycleConfig>): void;
    getConfig(): TraceLifecycleConfig;
    startTrace(): void;
    isTraceDurationExceeded(): boolean;
    getRemainingTraceTime(): number;
    getElapsedTraceTime(): number;
    endTrace(): void;
    addTraceEvent(event: unknown): boolean;
    getBufferedEvents(): unknown[];
    getBufferStats(): {
        sizeMB: number;
        eventCount: number;
        maxSizeMB: number;
    };
    clearBuffer(): void;
    listTraceFiles(): Promise<TraceFileInfo[]>;
    getExpiredTraces(): Promise<TraceFileInfo[]>;
    cleanupExpiredTraces(): Promise<{
        deleted: string[];
        errors: string[];
    }>;
    getTotalTracesSizeMB(): Promise<number>;
    validateDuration(requestedSeconds: number): {
        valid: boolean;
        clampedValue: number;
        message?: string;
    };
}