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