/**
 * Image handling — download remote images, upload to Feishu drive, embed in doc blocks.
 *
 * Uses lark-cli for:
 * - drive +upload (single-shot, ≤20MB)
 * - docx API for inserting image blocks
 */
import type { LarkCli } from "../cli.js";
export interface ImageRef {
    /** Full match text (for replacement) */
    fullMatch: string;
    /** Original URL */
    url: string;
    /** Alt text / caption */
    alt: string;
    /** Line number (0-based) */
    line: number;
    /** Is HTML <image> tag (vs markdown ![alt](url)) */
    isHtml: boolean;
}
export interface ImageProcessResult {
    markdown: string;
    downloaded: number;
    uploaded: number;
    failed: number;
    errors: string[];
}
/**
 * Download an image from URL to a temp file.
 * Returns local file path. Throws on failure.
 */
export declare function downloadImage(url: string, filename?: string): string;
/**
 * Upload a local image file to Feishu drive via lark-cli.
 * Returns the file_token on success.
 */
export declare function uploadImage(localPath: string): string;
/**
 * Insert an image block into a document via lark-cli API.
 */
export declare function insertImageBlock(cli: LarkCli, docId: string, fileToken: string, width?: number, height?: number): boolean;
/**
 * Extract all image references from markdown.
 */
export declare function extractImageRefs(mdText: string): ImageRef[];
/**
 * Process all images in markdown: download → upload → insert blocks.
 *
 * Images are downloaded, uploaded to Feishu, and inserted as blocks
 * into the document. The markdown is updated to remove the image
 * references (since they're now embedded as blocks).
 */
export declare function processImages(cli: LarkCli, mdText: string, docId: string): ImageProcessResult;
/**
 * Process images from a local directory.
 * Scans for ![alt](relative/path.png) references and resolves them.
 */
export declare function processLocalImages(cli: LarkCli, mdText: string, docId: string, imageDir: string): ImageProcessResult;
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