psn-js/src/decoders/info/info-tracker-list-chunk.ts

import { Constants } from '../../constants.js';
import type { InfoTrackerChunk } from '../../models/info/info-tracker-chunk.js';
import type {
	InfoTrackerListChunk,
	InfoTrackerListChunkData,
} from '../../models/info/info-tracker-list-chunk.js';
import { Decoders } from '../index.js';

export default (buffer: Uint8Array): InfoTrackerListChunk => {
	const chunk = Decoders.Chunk(buffer);

	const trackers: InfoTrackerChunk[] = [];

	if (chunk.header.hasSubchunks && chunk.chunkData) {
		let offset = 0;
		if (chunk.header.dataLen) {
			while (offset < chunk.header.dataLen) {
				const trackerChunk = Decoders.InfoTrackerChunk(
					chunk.chunkData.subarray(offset)
				);
				offset += Constants.CHUNK_HEADER_SIZE;
				if (trackerChunk.chunk.header.dataLen) {
					offset += trackerChunk.chunk.header.dataLen;
				}
				if (trackerChunk.chunk.header.id !== undefined) {
					trackers.push(trackerChunk);
				}
			}
		}
	}
	const data: InfoTrackerListChunkData = {
		trackers,
	};
	return {
		chunk,
		data,
	};
};