/**
 * Connection Manager Interfaces
 *
 * Abstractions for managing connections to different backends.
 */
/**
 * Base connection configuration.
 */
export interface IConnectionConfig {
    /** Endpoint URL */
    readonly endpoint: string;
    /** Connection timeout in milliseconds */
    readonly timeout?: number;
}
/**
 * MCP-specific connection configuration.
 */
export interface IMcpConnectionConfig extends IConnectionConfig {
    /** API key for authentication (e.g., Zep Cloud) */
    readonly apiKey?: string;
}
/**
 * Neo4j-specific connection configuration.
 */
export interface INeo4jConnectionConfig {
    /** Bolt URI (e.g., bolt://localhost:7687) */
    readonly uri: string;
    /** Database username */
    readonly username: string;
    /** Database password */
    readonly password: string;
    /** Database name (defaults to neo4j) */
    readonly database?: string;
    /** Connection timeout in milliseconds */
    readonly timeout?: number;
}
/**
 * Zep Cloud-specific connection configuration.
 */
export interface IZepConnectionConfig extends IConnectionConfig {
    /** Zep API key (required) */
    readonly apiKey: string;
}
/**
 * Connection manager interface.
 * Manages lifecycle and health of a single backend connection.
 */
export interface IConnectionManager<TConfig = IConnectionConfig> {
    /**
     * Initialize/establish the connection.
     * For MCP, this creates a session.
     * For Neo4j, this verifies connectivity.
     */
    connect(): Promise<void>;
    /**
     * Check if the connection is healthy.
     */
    isConnected(): Promise<boolean>;
    /**
     * Close the connection gracefully.
     */
    disconnect(): Promise<void>;
    /**
     * Get the current configuration.
     */
    getConfig(): TConfig;
    /**
     * Execute a backend-specific query.
     * @param query - Backend-specific query (Cypher, MCP method, etc.)
     */
    execute<T>(query: unknown): Promise<T>;
}
/**
 * MCP connection manager interface.
 */
export interface IMcpConnectionManager extends IConnectionManager<IMcpConnectionConfig> {
    /**
     * Get the current MCP session ID.
     */
    getSessionId(): string | null;
    /**
     * Call an MCP method.
     * @param method - MCP method name
     * @param params - Method parameters
     */
    call<T>(method: string, params?: Record<string, unknown>): Promise<T>;
}
/**
 * Neo4j connection manager interface.
 */
export interface INeo4jConnectionManager extends IConnectionManager<INeo4jConnectionConfig> {
    /**
     * Execute a Cypher query.
     * @param cypher - Cypher query string
     * @param params - Query parameters
     */
    query<T>(cypher: string, params?: Record<string, unknown>): Promise<T[]>;
}
/**
 * Zep Cloud connection manager interface.
 */
export interface IZepConnectionManager extends IConnectionManager<IZepConnectionConfig> {
    /**
     * Make a Zep API request.
     * @param path - API path
     * @param options - Fetch options
     */
    fetch<T>(path: string, options?: RequestInit): Promise<T>;
}
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