/**
 * Block-level document copy — BFS reproduction of source block tree.
 *
 * Preserves ALL block-level styles by working at the API block level.
 * Uses createBlockChildrenEx to get created block IDs directly,
 * avoiding expensive getBlocks() calls in the copy loop.
 */
import { type LarkCli } from "../cli.js";
export interface ImageData {
    bytes: Buffer;
    width: number;
    height: number;
    align: number;
    scale: number;
}
export type ImageCache = Map<string, ImageData>;
export interface FailedImage {
    /** Source image file_token */
    sourceToken: string;
    /** Target block ID that was supposed to receive the image */
    targetBlockId: string;
    /** Human-readable reason for failure */
    reason: string;
}
export interface CopyResult {
    created: number;
    skipped: number;
    /** Unsupported block types encountered: block_type → count */
    unsupportedTypes: Map<number, number>;
    /** Images that failed to upload after retries */
    failedImages: FailedImage[];
}
type Block = Record<string, unknown>;
/** Human-readable names for all known Feishu docx block types. */
export declare const BLOCK_TYPE_NAME: Record<number, string>;
type HeadingNumbers = Map<string, string>;
/** Walk source blocks in document order and assign hierarchical numbers. */
export declare function computeHeadingNumbers(sourceBlocks: Block[]): HeadingNumbers;
export declare function copyDocBlocks(cli: LarkCli, sourceBlocks: Block[], targetDocId: string, imageCache: ImageCache, opts?: {
    verbose?: boolean;
    headingNumbers?: HeadingNumbers;
}): CopyResult;
export declare function cleanupEmptyTails(cli: LarkCli, docId: string, sourceBlocks: Block[]): number;
/**
 * Delete all block children from a document, leaving it empty.
 * Returns true if successful (or already empty).
 */
export declare function clearDocContent(cli: LarkCli, docObjToken: string): boolean;
export {};
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