vt-social/app/models/account_suggestions.rb

49 lines
1.5 KiB
Ruby

# frozen_string_literal: true
class AccountSuggestions
include DatabaseHelper
SOURCES = [
AccountSuggestions::SettingSource,
AccountSuggestions::FriendsOfFriendsSource,
AccountSuggestions::SimilarProfilesSource,
AccountSuggestions::GlobalSource,
].freeze
BATCH_SIZE = 40
def initialize(account)
@account = account
end
def get(limit, offset = 0)
with_read_replica do
account_ids_with_sources = Rails.cache.fetch("follow_recommendations/#{@account.id}", expires_in: 15.minutes) do
SOURCES.flat_map { |klass| klass.new.get(@account, limit: BATCH_SIZE) }.each_with_object({}) do |(account_id, source), h|
(h[account_id] ||= []).concat(Array(source).map(&:to_sym))
end.to_a.shuffle
end
# The sources deliver accounts that haven't yet been followed, are not blocked,
# and so on. Since we reset the cache on follows, blocks, and so on, we don't need
# a complicated query on this end.
account_ids = account_ids_with_sources[offset, limit]
accounts_map = Account.where(id: account_ids.map(&:first)).includes(:account_stat, :user).index_by(&:id)
account_ids.filter_map do |(account_id, sources)|
next unless accounts_map.key?(account_id)
AccountSuggestions::Suggestion.new(
account: accounts_map[account_id],
sources: sources
)
end
end
end
def remove(target_account_id)
FollowRecommendationMute.create(account_id: @account.id, target_account_id: target_account_id)
end
end