/**
 * Gemini API client for image generation
 * Integrates with Google's Gemini AI API using the official SDK
 * Supports automatic URL Context processing and feature parameters
 */
import type { Result } from '../types/result';
import type { Config } from '../utils/config';
import { GeminiAPIError, NetworkError } from '../utils/errors';
/**
 * Metadata for generated images
 */
export interface GeminiGenerationMetadata {
    model: string;
    prompt: string;
    mimeType: string;
    timestamp: Date;
    inputImageProvided: boolean;
    modelVersion?: string;
    responseId?: string;
}
/**
 * Parameters for Gemini API image generation
 */
export interface GeminiApiParams {
    prompt: string;
    inputImage?: string;
    aspectRatio?: string;
    imageSize?: string;
    useGoogleSearch?: boolean;
}
/**
 * Result of image generation
 */
export interface GeneratedImageResult {
    imageData: Buffer;
    metadata: GeminiGenerationMetadata;
}
/**
 * Gemini API client interface
 */
export interface GeminiClient {
    generateImage(params: GeminiApiParams): Promise<Result<GeneratedImageResult, GeminiAPIError | NetworkError>>;
}
/**
 * Creates a new Gemini API client
 * @param config Configuration containing API key and other settings
 * @returns Result containing the client or an error
 */
export declare function createGeminiClient(config: Config): Result<GeminiClient, GeminiAPIError>;
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