/**
 * Type definitions for the Google model provider.
 */
import type { GoogleGenAI, GoogleGenAIOptions, Tool } from '@google/genai';
import type { BaseModelConfig } from '../model.js';
/**
 * Configuration interface for Google model provider.
 *
 * @example
 * ```typescript
 * const config: GoogleModelConfig = {
 *   modelId: 'gemini-2.5-flash',
 *   params: { temperature: 0.7, maxOutputTokens: 1024 }
 * }
 * ```
 *
 * @see https://ai.google.dev/api/generate-content#generationconfig
 */
export interface GoogleModelConfig extends BaseModelConfig {
    /**
     * Gemini model identifier (e.g., gemini-2.5-flash, gemini-2.5-pro).
     *
     * @defaultValue 'gemini-2.5-flash'
     * @see https://ai.google.dev/gemini-api/docs/models
     */
    modelId?: string;
    /**
     * Additional parameters to pass to the Gemini API (e.g., temperature, maxOutputTokens).
     *
     * @see https://ai.google.dev/api/generate-content#generationconfig
     */
    params?: Record<string, unknown>;
    /**
     * Built-in tools (e.g., GoogleSearch, CodeExecution, UrlContext).
     * These are appended as separate Tool objects alongside any functionDeclarations.
     *
     * @see https://ai.google.dev/gemini-api/docs/function-calling
     */
    builtInTools?: Tool[];
    /**
     * Whether to use the native Gemini countTokens API.
     *
     * When `true`, `countTokens()` calls the Gemini token counting API for
     * accurate counts. When `false` or not set (default), skips the API call and uses
     * the character-based heuristic estimator.
     *
     * @defaultValue false
     */
    useNativeTokenCount?: boolean;
}
/**
 * Options interface for creating a GoogleModel instance.
 */
export interface GoogleModelOptions extends GoogleModelConfig {
    /**
     * Gemini API key (falls back to GEMINI_API_KEY environment variable).
     */
    apiKey?: string;
    /**
     * Pre-configured Google GenAI client instance.
     * If provided, this client will be used instead of creating a new one.
     */
    client?: GoogleGenAI;
    /**
     * Additional Google GenAI client configuration.
     * Only used if client is not provided.
     */
    clientConfig?: Omit<GoogleGenAIOptions, 'apiKey'>;
}
/**
 * Internal state for tracking streaming progress.
 */
export interface GoogleStreamState {
    messageStarted: boolean;
    textContentBlockStarted: boolean;
    reasoningContentBlockStarted: boolean;
    hasToolCalls: boolean;
    inputTokens: number;
    outputTokens: number;
}
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