/**
 * Authentication API
 * Handles QR code login and browser OAuth flows
 */
export interface QrSessionResponse {
    success: boolean;
    sessionId: string;
    expiresAt: string;
    expiresInSeconds: number;
    qrContent: string;
}
export interface QrStatusResponse {
    success: boolean;
    status: 'pending' | 'scanned' | 'confirmed' | 'expired' | 'used';
    token?: string;
    userId?: number;
    isExpired?: boolean;
    expiresAt?: string;
}
export interface LoginResponse {
    user: {
        id: number;
        email: string;
        username?: string;
        displayName?: string;
    };
    token: string;
}
export interface UserInfo {
    id: number;
    email: string;
    name?: string;
    picture?: string;
}
/**
 * Create a QR login session
 */
export declare function createQrSession(deviceType?: string): Promise<QrSessionResponse>;
/**
 * Check QR session status
 */
export declare function getQrSessionStatus(sessionId: string): Promise<QrStatusResponse>;
/**
 * Perform QR code login
 * Displays QR code in terminal and polls for confirmation
 */
export declare function qrLogin(onStatus?: (status: string) => void): Promise<{
    success: boolean;
    error?: string;
}>;
/**
 * Perform browser-based OAuth login
 * Opens browser and starts local server to receive callback
 */
export declare function browserLogin(): Promise<{
    success: boolean;
    error?: string;
}>;
/**
 * Get current user info
 */
export declare function getCurrentUser(): Promise<UserInfo | null>;
/**
 * Validate current token
 */
export declare function validateToken(): Promise<boolean>;
/**
 * Login with email and password
 */
export declare function emailLogin(email: string, password: string): Promise<{
    success: boolean;
    error?: string;
}>;
/**
 * Login with wallet private key (EVM or Solana).
 * Performs the full nonce-request -> sign -> login flow.
 */
export declare function walletLogin(chain: 'evm' | 'solana', privateKey: string): Promise<{
    success: boolean;
    error?: string;
    address?: string;
}>;
/**
 * Logout - clear stored credentials
 */
export declare function logout(): void;
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