import { EntityDescriptor } from "../CommonTypes.js";
/**
 * Core types and interfaces for DEM Delta Synchronization & Change Tracking.
 */
export type ChangeType = "create" | "update" | "delete";
export interface ChangeEntry<T = unknown> {
    revision: number;
    type: ChangeType;
    id: string;
    data?: Partial<T>;
    timestamp: number;
    estimatedBytes: number;
}
export type PruneMode = "either" | "both";
export interface ChangeLogOptions {
    /**
     * Maximum age of entries in milliseconds (TTL).
     * E.g. 7 * 24 * 60 * 60 * 1000 for 7 days.
     */
    maxAgeMs?: number;
    /**
     * Maximum estimated size of all entries combined in bytes.
     * E.g. 10 * 1024 * 1024 for 10 MB.
     */
    maxSizeBytes?: number;
    /**
     * Maximum number of entries to retain.
     */
    maxEntries?: number;
    /**
     * Pruning policy when both conditions are specified:
     * - 'either': prune if entry exceeds maxAge OR total size exceeds maxSizeBytes (default)
     * - 'both': prune only if BOTH conditions are violated
     */
    pruneMode?: PruneMode;
}
export interface DeltaSyncPayload<T = unknown> {
    status: "up-to-date" | "delta" | "full";
    revision: number;
    changes?: ChangeEntry<T>[];
    ids?: string[];
    objects?: T[];
    properties?: string[];
}
export interface StoredManagerState<T = unknown> {
    className: string;
    revision: number;
    ids: string[];
    objects: T[];
    properties: string[];
    savedAt: number;
    manifest?: EntityDescriptor[];
}
export interface ClientDeltaSyncOptions {
    /**
     * The storage adapter instance to use for client caching and offline persistence.
     */
    storage?: import("./storage/IClientStorageAdapter.js").IClientStorageAdapter;
    /**
     * Optional custom identifier for cache namespace.
     */
    cacheKeyPrefix?: string;
}
export interface ServerDeltaSyncOptions extends ChangeLogOptions {
    /**
     * Set to false to disable change tracking on the server manager.
     */
    enabled?: boolean;
}