/**
 * @license
 * Copyright 2025 Vybestack LLC
 * SPDX-License-Identifier: Apache-2.0
 */
/**
 * Endpoint validation utilities for provider authentication
 */
/**
 * Known Qwen endpoints that support Qwen OAuth
 */
export declare const QWEN_ENDPOINTS: readonly ["https://dashscope.aliyuncs.com", "https://api.qwen.com", "https://portal.qwen.ai"];
/**
 * Known OpenAI endpoints
 */
export declare const OPENAI_ENDPOINTS: readonly ["https://api.openai.com/v1", "https://api.openai.com"];
export interface EndpointValidationResult {
    isQwenEndpoint: boolean;
    isOpenAIEndpoint: boolean;
    supportsQwenOAuth: boolean;
    normalizedBaseURL: string;
}
/**
 * Validates and categorizes an endpoint URL
 * @param baseURL The base URL to validate
 * @returns Endpoint validation information
 */
export declare function validateEndpoint(baseURL: string): EndpointValidationResult;
/**
 * Checks if a base URL is a Qwen endpoint that supports Qwen OAuth
 * @param baseURL The base URL to check
 * @returns true if the endpoint supports Qwen OAuth
 */
export declare function isQwenEndpoint(baseURL: string): boolean;
/**
 * Checks if a base URL is an OpenAI endpoint
 * @param baseURL The base URL to check
 * @returns true if the endpoint is an OpenAI endpoint
 */
export declare function isOpenAIEndpoint(baseURL: string): boolean;
/**
 * Determines if Qwen OAuth should be used for a given endpoint
 * @param baseURL The base URL to check
 * @param isOAuthEnabled Whether OAuth is enabled in configuration
 * @returns true if Qwen OAuth should be used
 */
export declare function shouldUseQwenOAuth(baseURL: string, isOAuthEnabled: boolean): boolean;
/**
 * Generates a helpful error message for OAuth endpoint mismatches
 * @param baseURL The base URL that doesn't support the requested OAuth
 * @param oauthProvider The OAuth provider that was requested
 * @returns Helpful error message
 */
export declare function generateOAuthEndpointMismatchError(baseURL: string, oauthProvider: string): string;
/**
 * Gets suggested endpoints for a given OAuth provider
 * @param oauthProvider The OAuth provider
 * @returns Array of suggested endpoints
 */
export declare function getSuggestedEndpoints(oauthProvider: string): string[];