| |
| import type { PaginationOptions } from '../../utils/paginate-arrays'; |
| import type { GraphQLContext } from '../../'; |
| import type { DBChannel } from 'shared/types'; |
| import { getMembersInChannel } from '../../models/usersChannels'; |
| import { encode, decode } from '../../utils/base64'; |
| import { canViewChannel } from '../../utils/permissions'; |
|
|
| export default async ( |
| channel: DBChannel, |
| { first, after }: PaginationOptions, |
| ctx: GraphQLContext |
| ) => { |
| const { loaders, user: currentUser } = ctx; |
| const { id, isPrivate } = channel; |
|
|
| if (isPrivate) { |
| if (!(await canViewChannel(currentUser, id, loaders))) return null; |
| } |
|
|
| const cursor = decode(after); |
| |
| const lastDigits = cursor.match(/-(\d+)$/); |
| const lastUserIndex = |
| lastDigits && lastDigits.length > 0 && parseInt(lastDigits[1], 10); |
|
|
| |
| return getMembersInChannel(id, { first, after: lastUserIndex }) |
| .then(users => loaders.user.loadMany(users)) |
| .then(result => ({ |
| pageInfo: { |
| hasNextPage: result && result.length >= first, |
| }, |
| edges: result.filter(Boolean).map((user, index) => ({ |
| cursor: encode(`${user.id}-${lastUserIndex + index + 1}`), |
| node: user, |
| })), |
| })); |
| }; |
|
|
