import { OpenAICompatibleProvider } from '@ai-sdk/openai-compatible';
import { Resolvable, FetchFunction } from '@ai-sdk/provider-utils';

interface GoogleCredentials {
    /**
     * The client email for the Google Cloud service account. Defaults to the
     * value of the `GOOGLE_CLIENT_EMAIL` environment variable.
     */
    clientEmail: string;
    /**
     * The private key for the Google Cloud service account. Defaults to the
     * value of the `GOOGLE_PRIVATE_KEY` environment variable.
     */
    privateKey: string;
    /**
     * Optional. The private key ID for the Google Cloud service account. Defaults
     * to the value of the `GOOGLE_PRIVATE_KEY_ID` environment variable.
     */
    privateKeyId?: string;
}

type GoogleVertexMaasModelId = 'deepseek-ai/deepseek-r1-0528-maas' | 'deepseek-ai/deepseek-v3.1-maas' | 'deepseek-ai/deepseek-v3.2-maas' | 'openai/gpt-oss-120b-maas' | 'openai/gpt-oss-20b-maas' | 'meta/llama-4-maverick-17b-128e-instruct-maas' | 'meta/llama-4-scout-17b-16e-instruct-maas' | 'minimax/minimax-m2-maas' | 'qwen/qwen3-coder-480b-a35b-instruct-maas' | 'qwen/qwen3-next-80b-a3b-instruct-maas' | 'qwen/qwen3-next-80b-a3b-thinking-maas' | 'moonshotai/kimi-k2-thinking-maas' | (string & {});

interface GoogleVertexMaasProvider extends OpenAICompatibleProvider<GoogleVertexMaasModelId, string, string, string> {
}
interface GoogleVertexMaasProviderSettings$1 {
    /**
     * Google Cloud project ID. Defaults to the value of the `GOOGLE_VERTEX_PROJECT` environment variable.
     */
    project?: string;
    /**
     * Google Cloud location/region. Defaults to the value of the `GOOGLE_VERTEX_LOCATION` environment variable.
     * Use 'global' for the global endpoint.
     */
    location?: string;
    /**
     * Base URL for the API calls. If not provided, will be constructed from project and location.
     */
    baseURL?: string;
    /**
     * Headers to use for requests. Can be:
     * - A headers object
     * - A Promise that resolves to a headers object
     * - A function that returns a headers object
     * - A function that returns a Promise of a headers object
     */
    headers?: Resolvable<Record<string, string | undefined>>;
    /**
     * Custom fetch implementation. You can use it as a middleware to intercept requests,
     * or to provide a custom fetch implementation for e.g. testing.
     */
    fetch?: FetchFunction;
}

interface GoogleVertexMaasProviderSettings extends GoogleVertexMaasProviderSettings$1 {
    /**
     * Optional. The Google credentials for the Google Cloud service account. If
     * not provided, the Google Vertex provider will use environment variables to
     * load the credentials.
     */
    googleCredentials?: GoogleCredentials;
}
/**
 * Create a Google Vertex AI MaaS (Model as a Service) provider instance for Edge runtimes.
 * Uses the OpenAI-compatible Chat Completions API for partner and open models.
 * Automatically handles Google Cloud authentication.
 *
 * @see https://cloud.google.com/vertex-ai/generative-ai/docs/maas/use-open-models
 */
declare function createVertexMaas(options?: GoogleVertexMaasProviderSettings): GoogleVertexMaasProvider;
/**
 * Default Google Vertex AI MaaS provider instance for Edge runtimes.
 */
declare const vertexMaas: GoogleVertexMaasProvider;

export { type GoogleVertexMaasModelId, type GoogleVertexMaasProvider, type GoogleVertexMaasProviderSettings, createVertexMaas, vertexMaas };