/**
 * @license
 * Copyright 2026 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import { HttpOptions } from '@google/genai';
import { BaseLlmConnection } from './base_llm_connection.js';
import { Gemini, GeminiParams } from './google_llm.js';
import { LlmRequest } from './llm_request.js';
import { LlmResponse } from './llm_response.js';
export interface ApigeeLlmParams extends GeminiParams {
    /**
     * The name of the model to use. The model string specifies the LLM provider
     * (e.g., Vertex AI, Gemini), API version, and the model ID. Supported format:
     *     `apigee/[<provider>/][<version>/]<model_id>`
     *     Components:
     *       `provider` (optional): `vertex_ai` or `gemini`.
     *       `version` (optional): The API version (e.g., `v1`, `v1beta`). If not
     *         provided, a default version will selected based on the provider.
     *       `model_id` (required): The model identifier (e.g.,
     *         `gemini-2.5-flash`).
     *     Examples:
     *       - `apigee/gemini-2.5-flash`
     *       - `apigee/v1/gemini-2.5-flash`
     *       - `apigee/vertex_ai/gemini-2.5-flash`
     *       - `apigee/gemini/v1/gemini-2.5-flash`
     *       - `apigee/vertex_ai/v1beta/gemini-2.5-flash`
     */
    model: string;
    /**
     * The proxy URL for the provider API. If not provided, it will look for
     * the APIGEE_PROXY_URL environment variable.
     */
    proxyUrl?: string;
    /**
     * API key to use. If not provided, it will look for the GOOGLE_GENAI_API_KEY,
     * GOOGLE_API_KEY or GEMINI_API_KEY environment variable, in that order. If
     * gemini provider is selected and no key is provided, the fake key "-" will
     * be used for the "x-goog-api-key" header.
     */
    apiKey?: string;
}
export declare class ApigeeLlm extends Gemini {
    private readonly proxyUrl;
    /**
     * A list of model name patterns that are supported by this LLM.
     *
     * @returns A list of supported models.
     */
    static readonly supportedModels: Array<string | RegExp>;
    constructor({ model, proxyUrl, apiKey, vertexai, location, project, headers, }: ApigeeLlmParams);
    protected getHttpOptions(): HttpOptions;
    protected getLiveHttpOptions(): HttpOptions;
    private identifyApiVersion;
    private _apigeeLiveApiVersion?;
    get liveApiVersion(): string;
    generateContentAsync(llmRequest: LlmRequest, stream?: boolean, abortSignal?: AbortSignal): AsyncGenerator<LlmResponse, void>;
    connect(llmRequest: LlmRequest): Promise<BaseLlmConnection>;
}