Function exportMasksZip

src/parsers/maskZipExport.ts:20–59

(
  imageNames: string[],
  fetchMask: MaskFetchFunction,
  onProgress?: MaskZipProgressCallback
)

}

export async function exportMasksZip(
  imageNames: string[],
  fetchMask: MaskFetchFunction,
  onProgress?: MaskZipProgressCallback
): Promise<Blob> {
  const { zipSync } = await import('fflate');

  const totalImages = imageNames.length;
  const zipData: Record<string, Uint8Array> = {};
  let processed = 0;
  let failed = 0;

  for (const imageName of imageNames) {
    try {
      const file = await fetchMask(imageName);
      if (!file) {
        failed++;
        processed++;
        onProgress?.(Math.round((processed / totalImages) * 100), `Skipped: ${imageName}`);
        continue;
      }

      const arrayBuffer = await file.arrayBuffer();
      zipData[normalizeMaskPath(imageName)] = new Uint8Array(arrayBuffer);
    } catch (err) {
      appLogger.warn(`[Mask Export] Failed to process ${imageName}:`, err);
      failed++;
    }

    processed++;
    onProgress?.(Math.round((processed / totalImages) * 100));
  }

  if (failed > 0) {
    appLogger.warn(`[Mask Export] ${failed}/${totalImages} masks failed to export`);
  }

  const zipped = zipSync(zipData, { level: 6 });
  return createZipBlob(zipped);
}

export async function downloadMasksZip(
  imageNames: string[],