import * as functions from 'firebase-functions'
import { getUser } from './utils'
import { createNotification } from './create-notification'
import { Group } from '../../common/group'

export const onCreateGroup = functions.firestore
  .document('groups/{groupId}')
  .onCreate(async (change, context) => {
    const group = change.data() as Group
    const { eventId } = context

    const groupCreator = await getUser(group.creatorId)
    if (!groupCreator) throw new Error('Could not find group creator')
    // create notifications for all members of the group
    await createNotification(
      group.id,
      'group',
      'created',
      groupCreator,
      eventId,
      group.about,
      {
        recipients: group.memberIds,
        slug: group.slug,
        title: group.name,
      }
    )
  })