/**
 * @fileoverview Storage adapter for persistent memory storage
 */
import type { MemoryMetadata } from '../types/index.js';
/**
 * Storage adapter interface for different storage backends
 */
export interface StorageAdapter {
    /**
     * Store a memory entry
     */
    store(memory: MemoryMetadata): Promise<void>;
    /**
     * Retrieve a memory by ID
     */
    retrieve(id: string): Promise<MemoryMetadata | null>;
    /**
     * Update a memory entry
     */
    update(id: string, updates: Partial<MemoryMetadata>): Promise<void>;
    /**
     * Delete a memory entry
     */
    delete(id: string): Promise<void>;
    /**
     * List memories with optional filtering
     */
    list(filters?: MemoryFilters): Promise<MemoryMetadata[]>;
    /**
     * Clear all memories (with optional tenant filter)
     */
    clear(tenantId?: string): Promise<void>;
}
/**
 * Memory filtering options
 */
export interface MemoryFilters {
    tenantId?: string;
    agentId?: string;
    type?: string;
    importance?: number;
    minImportance?: number;
    maxImportance?: number;
    tags?: string[];
    since?: Date;
    until?: Date;
    startDate?: Date;
    endDate?: Date;
    sortBy?: 'created' | 'updated' | 'accessed' | 'importance';
    offset?: number;
    limit?: number;
}
/**
 * In-memory storage adapter for development and testing
 */
export declare class InMemoryStorageAdapter implements StorageAdapter {
    private memories;
    store(memory: MemoryMetadata): Promise<void>;
    retrieve(id: string): Promise<MemoryMetadata | null>;
    update(id: string, updates: Partial<MemoryMetadata>): Promise<void>;
    delete(id: string): Promise<void>;
    list(filters?: MemoryFilters): Promise<MemoryMetadata[]>;
    clear(tenantId?: string): Promise<void>;
}
/**
 * PostgreSQL storage adapter (production implementation available)
 * @deprecated Use ProductionPostgreSQLAdapter for production deployments
 */
/**
 * PostgreSQL storage adapter - Enhanced implementation
 * @deprecated Use ProductionPostgreSQLAdapter for new implementations
 */
export declare class PostgreSQLStorageAdapter implements StorageAdapter {
    private adapter;
    constructor(connectionString: string);
    private parseConnectionString;
    store(memory: MemoryMetadata): Promise<void>;
    retrieve(id: string): Promise<MemoryMetadata | null>;
    update(id: string, updates: Partial<MemoryMetadata>): Promise<void>;
    delete(id: string): Promise<void>;
    list(filters?: MemoryFilters): Promise<MemoryMetadata[]>;
    clear(tenantId?: string): Promise<void>;
}
/**
 * Redis storage adapter - Production implementation
 */
export declare class RedisStorageAdapter implements StorageAdapter {
    private redisUrl;
    private redis;
    constructor(redisUrl: string);
    private initializeRedis;
    private ensureConnected;
    store(memory: MemoryMetadata): Promise<void>;
    retrieve(id: string): Promise<MemoryMetadata | null>;
    update(id: string, updates: Partial<MemoryMetadata>): Promise<void>;
    delete(id: string): Promise<void>;
    list(filters?: MemoryFilters): Promise<MemoryMetadata[]>;
    clear(tenantId?: string): Promise<void>;
}
/**
 * File-based storage adapter for shared persistent storage
 */
export declare class FileStorageAdapter implements StorageAdapter {
    private filePath;
    private lockPath;
    constructor(dataDirectory?: string);
    private ensureDirectory;
    private acquireLock;
    private releaseLock;
    private readMemories;
    private writeMemories;
    store(memory: MemoryMetadata): Promise<void>;
    retrieve(id: string): Promise<MemoryMetadata | null>;
    update(id: string, updates: Partial<MemoryMetadata>): Promise<void>;
    delete(id: string): Promise<void>;
    list(filters?: MemoryFilters): Promise<MemoryMetadata[]>;
    clear(tenantId?: string): Promise<void>;
}
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