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# frozen_string_literal: true
class FollowService < BaseService
include Redisable
include Payloadable
# Follow a remote user, notify remote user about the follow
# @param [Account] source_account From which to follow
# @param [String, Account] uri User URI to follow in the form of username@domain (or account record)
# @param [true, false, nil] reblogs Whether or not to show reblogs, defaults to true
def call(source_account, target_account, reblogs: nil)
reblogs = true if reblogs.nil?
target_account = ResolveAccountService.new.call(target_account, skip_webfinger: true)
raise ActiveRecord::RecordNotFound if target_account.nil? || target_account.id == source_account.id || target_account.suspended?
raise Mastodon::NotPermittedError if target_account.blocking?(source_account) || source_account.blocking?(target_account) || target_account.moved? || (!target_account.local? && target_account.ostatus?) || source_account.domain_blocking?(target_account.domain)
if source_account.following?(target_account)
# We're already following this account, but we'll call follow! again to
# make sure the reblogs status is set correctly.
source_account.follow!(target_account, reblogs: reblogs)
return
elsif source_account.requested?(target_account)
# This isn't managed by a method in AccountInteractions, so we modify it
# ourselves if necessary.
req = source_account.follow_requests.find_by(target_account: target_account)
req.update!(show_reblogs: reblogs)
return
end
ActivityTracker.increment('activity:interactions')
if target_account.locked? || target_account.activitypub?
request_follow(source_account, target_account, reblogs: reblogs)
elsif target_account.local?
direct_follow(source_account, target_account, reblogs: reblogs)
end
end
private
def request_follow(source_account, target_account, reblogs: true)
follow_request = FollowRequest.create!(account: source_account, target_account: target_account, show_reblogs: reblogs)
if target_account.local?
LocalNotificationWorker.perform_async(target_account.id, follow_request.id, follow_request.class.name)
elsif target_account.activitypub?
ActivityPub::DeliveryWorker.perform_async(build_json(follow_request), source_account.id, target_account.inbox_url)
end
follow_request
end
def direct_follow(source_account, target_account, reblogs: true)
follow = source_account.follow!(target_account, reblogs: reblogs)
LocalNotificationWorker.perform_async(target_account.id, follow.id, follow.class.name)
MergeWorker.perform_async(target_account.id, source_account.id)
follow
end
def build_json(follow_request)
Oj.dump(serialize_payload(follow_request, ActivityPub::FollowSerializer))
end
end
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