/**
 * Arial Server - Device flow repository
 *
 * CRUD operations for OAuth device flow state
 */
import type { CreateDeviceFlowData, DeviceFlow } from "./types.js";
/**
 * Create a new device flow
 */
export declare function createDeviceFlow(data: CreateDeviceFlowData): DeviceFlow;
/**
 * Get device flow by device code
 */
export declare function getDeviceFlowByCode(deviceCode: string): DeviceFlow | null;
/**
 * Get device flow by user code
 */
export declare function getDeviceFlowByUserCode(userCode: string): DeviceFlow | null;
/**
 * Mark device flow as completed with user ID
 */
export declare function completeDeviceFlow(deviceCode: string, userId: string): void;
/**
 * Delete a device flow
 */
export declare function deleteDeviceFlow(deviceCode: string): boolean;
/**
 * Delete expired device flows
 */
export declare function cleanupExpiredFlows(): number;
/**
 * Check if a device flow is expired
 */
export declare function isDeviceFlowExpired(flow: DeviceFlow): boolean;
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