import { GeminiProvider } from '../providers/gemini/GeminiProvider.js';
import { ConfigService } from './ConfigService.js';
export declare class FileService {
    private static readonly REMOTE_VIDEO_INLINE_THRESHOLD;
    private static readonly REMOTE_VIDEO_TIMEOUT_MS;
    private uploadStrategy;
    private configService;
    constructor(configService: ConfigService, type: 'image' | 'video', visionProvider: GeminiProvider);
    handleImageSource(imageSource: string): Promise<string>;
    handleVideoSource(videoSource: string): Promise<string>;
    private handleLocalVideoFile;
    private handleRemoteVideoFile;
    private readVideoStreamWithLimit;
    private uploadRemoteVideoStream;
    uploadFile(buffer: Buffer, filename: string, mimeType: string): Promise<string>;
    cleanup(fileId: string): Promise<void>;
    readFile(filePath: string): Promise<Buffer>;
    private getImageData;
    private isPublicUrl;
    private isGcsUri;
    private isLocalFilePath;
    private isSupportedFileType;
    private getSupportedFileTypes;
    private normalizeMimeType;
    private getMaxFileSize;
    private getMimeType;
    private getMimeTypeFromBuffer;
    private getFileExtension;
    static isImageFile(mimeType: string): boolean;
    static isVideoFile(mimeType: string): boolean;
    static getFileExtension(mimeType: string): string;
}
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