@juspay/neurolink/dist/lib/auth/providers/oauth2.d.ts

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import type { AuthHealthCheck, AuthProviderConfig, AuthRequestContext, OAuth2Config, TokenValidationResult } from "../../types/index.js";
import { BaseAuthProvider } from "./BaseAuthProvider.js";
/**
 * Generic OAuth2/OIDC Provider
 *
 * Supports any OAuth2-compliant identity provider with configurable endpoints.
 * Works with both JWKS-based JWT validation and token introspection.
 *
 * Features:
 * - JWT validation with JWKS (if jwksUrl provided)
 * - Token introspection endpoint support
 * - User info endpoint integration
 * - PKCE support
 *
 * @example
 * ```typescript
 * const oauth2 = new OAuth2Provider({
 *   type: "oauth2",
 *   authorizationUrl: "https://idp.example.com/oauth/authorize",
 *   tokenUrl: "https://idp.example.com/oauth/token",
 *   userInfoUrl: "https://idp.example.com/userinfo",
 *   jwksUrl: "https://idp.example.com/.well-known/jwks.json",
 *   clientId: "your-client-id",
 *   clientSecret: "your-client-secret",
 * });
 *
 * const result = await oauth2.authenticateToken(accessToken);
 * ```
 */
export declare class OAuth2Provider extends BaseAuthProvider {
    readonly type: "oauth2";
    private authorizationUrl;
    private tokenUrl;
    private userInfoUrl?;
    private jwksUrl?;
    private clientId;
    private clientSecret?;
    private scopes;
    private redirectUrl?;
    private usePKCE;
    private jwks;
    constructor(config: AuthProviderConfig & OAuth2Config);
    /**
     * Initialize JWKS for JWT verification (if jwksUrl is provided)
     */
    initialize(): Promise<void>;
    /**
     * Validate OAuth2 access token
     *
     * Uses JWKS validation if available, otherwise falls back to userinfo endpoint
     */
    authenticateToken(token: string, _context?: AuthRequestContext): Promise<TokenValidationResult>;
    /**
     * Validate token via userinfo endpoint
     */
    private validateViaUserInfo;
    /**
     * Get authorization URL for OAuth2 flow
     */
    getAuthorizationUrl(state: string, codeChallenge?: string): string;
    /**
     * Exchange authorization code for tokens
     */
    exchangeCode(code: string, codeVerifier?: string): Promise<{
        accessToken: string;
        refreshToken?: string;
        idToken?: string;
    }>;
    /**
     * Health check
     */
    healthCheck(): Promise<AuthHealthCheck>;
}