79 lines
1.8 KiB
Ruby
79 lines
1.8 KiB
Ruby
class TopicPostersSummary
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attr_reader :topic, :options
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def initialize(topic, options = {})
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@topic = topic
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@options = options
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end
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def summary
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sorted_top_posters.compact.map(&method(:new_topic_poster_for))
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end
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private
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def new_topic_poster_for(user)
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TopicPoster.new.tap do |topic_poster|
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topic_poster.user = user
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topic_poster.description = descriptions_for(user)
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topic_poster.extras = 'latest' if include_latest_class?(user)
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end
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end
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def descriptions_by_id
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@descriptions_by_id ||= begin
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user_ids_with_descriptions.each_with_object({}) do |(id, description), descriptions|
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descriptions[id] ||= []
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descriptions[id] << description
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end
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end
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end
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def include_latest_class?(user)
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topic.last_post_user_id == user.id && user_ids.uniq.size > 1
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end
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def descriptions_for(user)
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descriptions_by_id[user.id].join ', '
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end
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def shuffle_last_poster_to_back_in(summary)
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unless last_poster_is_topic_creator?
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summary.reject!{ |u| u.id == topic.last_post_user_id }
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summary << avatar_lookup[topic.last_post_user_id]
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end
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summary
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end
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def user_ids_with_descriptions
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user_ids.zip([
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:original_poster,
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:most_recent_poster,
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:frequent_poster,
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:frequent_poster,
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:frequent_poster,
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:frequent_poster
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].map { |description| I18n.t(description) })
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end
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def last_poster_is_topic_creator?
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topic.user_id == topic.last_post_user_id
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end
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def sorted_top_posters
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shuffle_last_poster_to_back_in top_posters
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end
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def top_posters
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user_ids.map { |id| avatar_lookup[id] }.compact.uniq.take(5)
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end
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def user_ids
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[ topic.user_id, topic.last_post_user_id, *topic.featured_user_ids ]
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end
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def avatar_lookup
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@avatar_lookup ||= options[:avatar_lookup] || AvatarLookup.new(user_ids)
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end
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end
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