/**
 * Represents token data structure with common OAuth properties
 */
export interface TokenData {
    accessToken: string;
    refreshToken?: string;
    expiresAt: number;
    tokenType: string;
    scope?: string;
    idToken?: string;
}
/**
 * Provider-specific options for OAuth flow initialization
 */
export interface OAuthOptions {
    clientId: string;
    clientSecret: string;
    redirectUri: string;
    scopes: string[];
    forceConsent?: boolean;
    accessType?: 'online' | 'offline';
    prompt?: 'none' | 'consent' | 'select_account';
}
/**
 * Auth state returned after initializing OAuth flow
 */
export interface OAuthFlowState {
    authUrl: string;
    state?: string;
}
/**
 * Interface for OAuth provider implementations
 */
export interface IOAuthProvider {
    /**
     * Initialize the OAuth flow and generate authorization URL
     */
    initializeOAuthFlow(options: OAuthOptions): Promise<OAuthFlowState>;
    /**
     * Handle OAuth callback and exchange code for tokens
     */
    handleCallback(code: string, options: OAuthOptions): Promise<TokenData>;
    /**
     * Refresh access token using a refresh token
     */
    refreshToken(refreshToken: string, options: OAuthOptions): Promise<TokenData>;
    /**
     * Revoke a token
     */
    revokeToken(token: string, options: OAuthOptions): Promise<boolean>;
}
/**
 * Interface for token storage implementations
 * Implementors can use any storage strategy (file system, database, etc.)
 */
export interface ITokenStorage {
    /**
     * Save tokens for a user
     */
    saveTokens(userId: string, tokens: TokenData): Promise<void>;
    /**
     * Retrieve tokens for a user
     */
    getTokens(userId: string): Promise<TokenData | null>;
    /**
     * Update tokens for a user
     */
    updateTokens(userId: string, tokens: TokenData): Promise<void>;
    /**
     * Delete tokens for a user
     */
    deleteTokens(userId: string): Promise<boolean>;
}
/**
 * Callback function type for OAuth flow completion
 */
export type OAuthCallbackHandler = (tokenData: TokenData | null, error?: Error) => void;