/**
 * Google Gemini provider implementation for structured LLM client.
 * Uses the @google/genai SDK with function calling and structured outputs.
 */
import type { Content, GenerateContentResponse } from "@google/genai";
import { BaseStructuredLLMProvider } from "./base-provider";
import type { BaseZodToolDefinition, ToolCall, ToolResult, AgentRunOptions, ProviderResponse } from "./types";
import { modelByProvider } from "../provider-and-models";
export type GoogleModel = (typeof modelByProvider.google)[number];
/**
 * Conversation state for Google provider.
 * Stores the content history in Google's format.
 */
interface GoogleConversationState {
    contents: Content[];
}
/**
 * Google-specific response type using the SDK's GenerateContentResponse.
 */
type GoogleResponse = ProviderResponse<GenerateContentResponse>;
/**
 * Google Gemini provider implementation.
 * Supports function calling with Gemini 3 and structured outputs.
 */
export declare class GoogleStructuredProvider extends BaseStructuredLLMProvider {
    protected readonly providerName = "google";
    protected initializeConversation(prompt: string): GoogleConversationState;
    protected callAPI<T>(state: GoogleConversationState, tools: BaseZodToolDefinition[], options: AgentRunOptions<T>): Promise<GoogleResponse>;
    protected extractSubmitOutput(response: GoogleResponse): unknown;
    protected extractToolCalls(response: GoogleResponse): ToolCall[];
    protected appendToConversation(state: GoogleConversationState, response: GoogleResponse, results: ToolResult[]): void;
}
export {};
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