import { OAuthSession, DeviceFlowState as DeviceFlowStateType, AuthCodeFlowState as AuthCodeFlowStateType, AuthorizationCode as AuthorizationCodeType } from '../types';
import { SessionStorageBackend, SessionStorageStats } from './types';
export interface PostgreSQLStorageOptions {
    connectionString?: string;
}
export declare class PostgreSQLStorageBackend implements SessionStorageBackend {
    readonly type: "postgresql";
    private prisma;
    private cleanupIntervalId;
    initialize(): Promise<void>;
    private getPrisma;
    createSession(session: OAuthSession): Promise<void>;
    getSession(sessionId: string): Promise<OAuthSession | undefined>;
    getSessionByToken(token: string): Promise<OAuthSession | undefined>;
    getSessionByRefreshToken(refreshToken: string): Promise<OAuthSession | undefined>;
    updateSession(sessionId: string, updates: Partial<OAuthSession>): Promise<boolean>;
    deleteSession(sessionId: string): Promise<boolean>;
    getAllSessions(): Promise<OAuthSession[]>;
    private rowToSession;
    storeDeviceFlow(state: string, flow: DeviceFlowStateType): Promise<void>;
    getDeviceFlow(state: string): Promise<DeviceFlowStateType | undefined>;
    getDeviceFlowByDeviceCode(deviceCode: string): Promise<DeviceFlowStateType | undefined>;
    deleteDeviceFlow(state: string): Promise<boolean>;
    private rowToDeviceFlow;
    storeAuthCodeFlow(internalState: string, flow: AuthCodeFlowStateType): Promise<void>;
    getAuthCodeFlow(internalState: string): Promise<AuthCodeFlowStateType | undefined>;
    deleteAuthCodeFlow(internalState: string): Promise<boolean>;
    private rowToAuthCodeFlow;
    storeAuthCode(code: AuthorizationCodeType): Promise<void>;
    getAuthCode(code: string): Promise<AuthorizationCodeType | undefined>;
    deleteAuthCode(code: string): Promise<boolean>;
    private rowToAuthCode;
    associateMcpSession(mcpSessionId: string, oauthSessionId: string): Promise<void>;
    getSessionByMcpSessionId(mcpSessionId: string): Promise<OAuthSession | undefined>;
    removeMcpSessionAssociation(mcpSessionId: string): Promise<boolean>;
    cleanup(): Promise<void>;
    close(): Promise<void>;
    getStats(): Promise<SessionStorageStats>;
    private startCleanupInterval;
    private stopCleanupInterval;
}