/**
 * 视觉模型调用结果
 */
export interface VisionResult {
    content: string;
    model: string;
}
/**
 * 图片文件转 base64
 */
export declare function imageToBase64(imagePath: string): Promise<string>;
/**
 * Buffer 转 base64
 */
export declare function bufferToBase64(buffer: Buffer, format?: string): string;
/**
 * 调用内网视觉模型
 */
export declare function callInternalVision(imageBase64: string, prompt: string, maxTokens?: number): Promise<string>;
/**
 * 调用内网 OCR 模型
 */
export declare function callInternalOCR(imageBase64: string, prompt: string, maxTokens?: number): Promise<string>;
/**
 * 调用 Dify 工作流
 */
export declare function callDifyWorkflow(imagePath: string, context: string): Promise<string>;
/**
 * 调用 Kimi Vision
 */
export declare function callKimiVision(imageBase64: string, prompt: string, maxTokens?: number): Promise<string>;
/**
 * 调用 GLM-4V
 */
export declare function callGLMVision(imageBase64: string, prompt: string, maxTokens?: number): Promise<string>;
/**
 * 统一调用视觉模型（带自动回退）
 * 优先级：内网 -> Kimi -> GLM -> Dify
 */
export declare function analyzeWithVision(imagePath: string, imageBase64: string, prompt: string, context?: string): Promise<VisionResult>;
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