mastodon/app/services/activitypub/fetch_featured_collection_service.rb

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# frozen_string_literal: true
class ActivityPub::FetchFeaturedCollectionService < BaseService
include JsonLdHelper
def call(account)
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return if account.featured_collection_url.blank? || account.suspended? || account.local?
@account = account
@json = fetch_resource(@account.featured_collection_url, true)
return unless supported_context?
case @json['type']
when 'Collection', 'CollectionPage'
process_items @json['items']
when 'OrderedCollection', 'OrderedCollectionPage'
process_items @json['orderedItems']
end
end
private
def process_items(items)
status_ids = items.map { |item| value_or_id(item) }
.filter_map { |uri| ActivityPub::FetchRemoteStatusService.new.call(uri, on_behalf_of: local_follower) unless ActivityPub::TagManager.instance.local_uri?(uri) }
.filter_map { |status| status.id if status.account_id == @account.id }
to_remove = []
to_add = status_ids
StatusPin.where(account: @account).pluck(:status_id).each do |status_id|
if status_ids.include?(status_id)
to_add.delete(status_id)
else
to_remove << status_id
end
end
StatusPin.where(account: @account, status_id: to_remove).delete_all unless to_remove.empty?
to_add.each do |status_id|
StatusPin.create!(account: @account, status_id: status_id)
end
end
def supported_context?
super(@json)
end
def local_follower
@local_follower ||= account.followers.local.without_suspended.first
end
end