/**
 * Log retention and cleanup manager
 * Handles automated cleanup of log files based on configurable policies
 */
import { type BaseCleanupResult, type BaseFileInfo, BaseRetentionManager, type BaseRetentionPolicy, type RetentionLogger } from '../utils/base-retention-manager.js';
export interface CleanupResult extends BaseCleanupResult {
    compressedFiles: string[];
    deletedFiles: string[];
}
export interface FileInfo extends BaseFileInfo {
    path: string;
}
export interface RetentionPolicy extends BaseRetentionPolicy {
    maxFiles?: number;
}
/**
 * Log retention manager extending the base retention manager
 */
export declare class RetentionManager extends BaseRetentionManager<RetentionPolicy, CleanupResult, FileInfo> {
    protected readonly logger: RetentionLogger;
    /**
     * Analyse log directory and return file information
     */
    analyzeDirectory(logDir: string): Promise<FileInfo[]>;
    /**
     * Group files by date for daily file management
     * Handles rotated files like ai-YYYY-MM-DD.log, ai-YYYY-MM-DD.1.log, ai-YYYY-MM-DD.2.log, etc.
     */
    private groupFilesByDate;
    /**
     * Clean up empty or corrupted log files
     */
    private cleanupEmptyFiles;
    /**
     * Execute cleanup based on retention policies
     */
    cleanup(logDir: string): Promise<CleanupResult>;
    /**
     * Apply age-based cleanup: delete files older than maxAgeDays
     * Enhanced for daily files - delete entire daily sets that are too old
     */
    private applyAgeBasedCleanup;
    /**
     * Apply size-based cleanup: keep total size under maxSizeMB
     */
    private applySizeBasedCleanup;
    /**
     * Apply count-based cleanup: keep maximum maxFiles files
     */
    private applyCountBasedCleanup;
    /**
     * Apply compression policy: compress files older than compressAfterDays
     * Enhanced for daily log files - compress entire daily files
     */
    private applyLogCompressionPolicy;
    protected deleteItem(item: FileInfo): Promise<void>;
    protected getItemAgeDays(item: FileInfo): number;
    protected getItemDisplayId(item: FileInfo): string;
    protected recordCompression(item: FileInfo, result: CleanupResult): void;
    protected recordDeletion(item: FileInfo, result: CleanupResult): void;
}
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