(function validateDmsFileSizes({ formData, onlineUtils }) {
  const fail = message => {
    onlineUtils.toast(message, 'warning');
    throw new Error(message);
  };
  const list = (value, label) => {
    if (value === undefined || value === null || value === '') return [];
    if (Array.isArray(value)) return value;
    if (typeof value === 'string') {
      try {
        const parsed = JSON.parse(value);
        if (Array.isArray(parsed)) return parsed;
      } catch (_) {
        // A malformed attachment value must not silently become an empty list.
      }
    }
    return fail(label + '数据无法读取，请重新打开表单后再提交');
  };
  const check = (value, label) => {
    for (const file of list(value, label)) {
      const name = typeof file?.name === 'string' && file.name.trim() ? '“' + file.name.trim() + '”' : '';
      const rawSize = file?.fileSize;
      // Use the current attachment supplied by upload-edit, never the original
      // upload or the display-only *_jnpfId snapshot. Missing size is not zero.
      if ((typeof rawSize !== 'number' && typeof rawSize !== 'string') || String(rawSize).trim() === '') {
        fail(label + name + '大小无法确认，请重新打开表单核对附件后再提交');
      }
      const size = Number(rawSize);
      if (!Number.isFinite(size) || !Number.isInteger(size) || size < 0) {
        fail(label + name + '大小无效，请重新选择附件后再提交');
      }
      if (size === 0) {
        const action = /\.docx$/i.test(file?.name || '')
          ? '请上传有内容的文件，或在线编辑保存后再提交'
          : '请上传有内容的文件后再提交';
        fail(label + name + '为空文件（0 字节），' + action);
      }
    }
  };
  check(formData.wenjian, '主文件');
  const rows = list(formData.jilu_mingxi, '记录明细');
  rows.forEach((row, index) => check(row?.jilu_wenjian, '第 ' + (index + 1) + ' 行记录附件'));
})