platform/dev/tool/src/utils.ts

import { AttachedData, AttachedDoc, Class, Doc, DocumentUpdate, Ref, Space, TxOperations } from '@anticrm/core'

export async function findOrUpdateAttached<T extends AttachedDoc> (client: TxOperations, space: Ref<Space>, _class: Ref<Class<T>>, objectId: Ref<T>, data: AttachedData<T>, attached: { attachedTo: Ref<Doc>, attachedClass: Ref<Class<Doc>>, collection: string }): Promise<T> {
  let existingObj = await client.findOne<Doc>(_class, { _id: objectId, space }) as T
  if (existingObj !== undefined) {
    await client.updateCollection(_class, space, objectId, attached.attachedTo, attached.attachedClass, attached.collection, data as unknown as DocumentUpdate<T>)
  } else {
    await client.addCollection(_class, space, attached.attachedTo, attached.attachedClass, attached.collection, data, objectId)
    existingObj = { _id: objectId, _class, space, ...data, ...attached } as unknown as T
  }
  return existingObj
}