shudao-main/shudao-vue-frontend/src/utils/attachmentContext.js

export function buildUploadedDocumentPayload(file) {
  if (!file || typeof file.content !== 'string' || !file.content.trim()) {
    return null
  }

  const normalizedType = String(file.type || file.fileType || '')
    .replace(/^\./, '')
    .toLowerCase()

  return {
    file_name: file.name || file.fileName || '',
    file_type: normalizedType,
    content: file.content,
    attachment_id: file.attachmentId || file.attachment_id || '',
    char_count: Number.isFinite(Number(file.charCount ?? file.char_count))
      ? Number(file.charCount ?? file.char_count)
      : file.content.length
  }
}