/** * Batch insertion for large Feishu documents (>1000 blocks). * * The Feishu Descendant API has a limit of 1000 blocks per request. * This module handles splitting large documents into batches while * preserving parent-child relationships between blocks.
*/
import type * as Lark from "@larksuiteoapi/node-sdk"; import { readStringValue } from "openclaw/plugin-sdk/text-runtime"; import { cleanBlocksForDescendant } from "./docx-table-ops.js"; import type { FeishuDocxBlock, FeishuDocxBlockChild } from "./docx-types.js";
export const BATCH_SIZE = 1000; // Feishu API limit per request
type Logger = { info?: (msg: string) => void };
type DocxDescendantCreatePayload = NonNullable<
Parameters<Lark.Client["docx"]["documentBlockDescendant"]["create"]>[0]
>;
type DocxDescendantCreateBlock = NonNullable<
NonNullable<DocxDescendantCreatePayload["data"]>["descendants"]
>[number];
function toDescendantBlock(block: FeishuDocxBlock): DocxDescendantCreateBlock { const children = normalizeChildIds(block.children); return {
...block,
...(children ? { children } : {}),
} as DocxDescendantCreateBlock;
}
/** * Collect all descendant blocks for a given first-level block ID. * Recursively traverses the block tree to gather all children.
*/ function collectDescendants(
blockMap: Map<string, FeishuDocxBlock>,
rootId: string,
): FeishuDocxBlock[] { const result: FeishuDocxBlock[] = []; const visited = new Set<string>();
function collect(blockId: string) { if (visited.has(blockId)) { return;
}
visited.add(blockId);
const block = blockMap.get(blockId); if (!block) { return;
}
result.push(block);
// Recursively collect children const children = block.children; if (Array.isArray(children)) { for (const childId of children) {
collect(childId);
}
} elseif (typeof children === "string") {
collect(children);
}
}
collect(rootId);
return result;
}
/** * Insert a single batch of blocks using Descendant API. * * @param parentBlockId - Parent block to insert into (defaults to docToken) * @param index - Position within parent's children (-1 = end)
*/
async function insertBatch(
client: Lark.Client,
docToken: string,
blocks: FeishuDocxBlock[],
firstLevelBlockIds: string[],
parentBlockId: string = docToken,
index: number = -1,
): Promise<FeishuDocxBlockChild[]> { const descendants = cleanBlocksForDescendant(blocks);
if (res.code !== 0) { thrownew Error(`${res.msg} (code: ${res.code})`);
}
return res.data?.children ?? [];
}
/** * Insert blocks in batches for large documents (>1000 blocks). * * Batches are split to ensure BOTH children_id AND descendants * arrays stay under the 1000 block API limit. * * @param client - Feishu API client * @param docToken - Document ID * @param blocks - All blocks from Convert API * @param firstLevelBlockIds - IDs of top-level blocks to insert * @param logger - Optional logger for progress updates * @param parentBlockId - Parent block to insert into (defaults to docToken = document root) * @param startIndex - Starting position within parent (-1 = end). For multi-batch inserts, * each batch advances this by the number of first-level IDs inserted so far. * @returns Inserted children blocks and any skipped block IDs
*/
export async function insertBlocksInBatches(
client: Lark.Client,
docToken: string,
blocks: FeishuDocxBlock[],
firstLevelBlockIds: string[],
logger?: Logger,
parentBlockId: string = docToken,
startIndex: number = -1,
): Promise<{ children: FeishuDocxBlockChild[]; skipped: string[] }> { const allChildren: FeishuDocxBlockChild[] = [];
// Build batches ensuring each batch has ≤1000 total descendants const batches: Array<{ firstLevelIds: string[]; blocks: FeishuDocxBlock[] }> = [];
let currentBatch: { firstLevelIds: string[]; blocks: FeishuDocxBlock[] } = {
firstLevelIds: [],
blocks: [],
}; const usedBlockIds = new Set<string>(); const blockMap = new Map<string, FeishuDocxBlock>(); for (const block of blocks) { if (block.block_id) {
blockMap.set(block.block_id, block);
}
}
for (const firstLevelId of firstLevelBlockIds) { const descendants = collectDescendants(blockMap, firstLevelId); const newBlocks = descendants.filter((b) => b.block_id && !usedBlockIds.has(b.block_id));
// A single block whose subtree exceeds the API limit cannot be split // (a table or other compound block must be inserted atomically). if (newBlocks.length > BATCH_SIZE) { thrownew Error(
`Block "${firstLevelId}" has ${newBlocks.length} descendants, which exceeds the ` +
`Feishu API limit of ${BATCH_SIZE} blocks per request. ` +
`Please split the content into smaller sections.`,
);
}
// If adding this first-level block would exceed limit, start new batch if (
currentBatch.blocks.length + newBlocks.length > BATCH_SIZE &&
currentBatch.blocks.length > 0
) {
batches.push(currentBatch);
currentBatch = { firstLevelIds: [], blocks: [] };
}
// Add to current batch
currentBatch.firstLevelIds.push(firstLevelId); for (const block of newBlocks) {
currentBatch.blocks.push(block); if (block.block_id) {
usedBlockIds.add(block.block_id);
}
}
}
// Don't forget the last batch if (currentBatch.blocks.length > 0) {
batches.push(currentBatch);
}
// Insert each batch, advancing index for position-aware inserts. // When startIndex == -1 (append to end), each batch appends after the previous. // When startIndex >= 0, each batch starts at startIndex + count of first-level IDs already inserted.
let currentIndex = startIndex; for (let i = 0; i < batches.length; i++) { const batch = batches[i];
logger?.info?.(
`feishu_doc: Inserting batch ${i + 1}/${batches.length} (${batch.blocks.length} blocks)...`,
);
// Advance index only for explicit positions; -1 always means "after last inserted" if (currentIndex !== -1) {
currentIndex += batch.firstLevelIds.length;
}
}
return { children: allChildren, skipped: [] };
}
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