discourse/app/models/topic_posters_summary.rb

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2013-05-23 02:21:19 -04:00
class TopicPostersSummary
attr_reader :topic, :options
def initialize(topic, options = {})
@topic = topic
@options = options
end
def summary
sorted_top_posters.map { |user| user ? new_topic_poster_for(user) : nil }.compact
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end
private
def new_topic_poster_for(user)
TopicPoster.new.tap do |topic_poster|
topic_poster.user = user
topic_poster.description = descriptions_for(user)
topic_poster.extras = 'latest' if is_latest_poster?(user)
end
end
def descriptions_by_id
@descriptions_by_id ||= begin
user_ids_with_descriptions.inject({}) do |descriptions, (id, description)|
descriptions[id] ||= []
descriptions[id] << description
descriptions
end
end
end
def descriptions_for(user)
descriptions_by_id[user.id].join ', '
end
def shuffle_last_poster_to_back_in(summary)
unless last_poster_is_topic_creator?
summary.reject!{ |u| u.id == topic.last_post_user_id }
summary << avatar_lookup[topic.last_post_user_id]
end
summary
end
def user_ids_with_descriptions
user_ids.zip([
:original_poster,
:most_recent_poster,
:most_posts,
:frequent_poster,
:frequent_poster,
:frequent_poster
].map { |description| I18n.t(description) })
end
def last_poster_is_topic_creator?
topic.user_id == topic.last_post_user_id
end
def is_latest_poster?(user)
topic.last_post_user_id == user.id
end
def sorted_top_posters
shuffle_last_poster_to_back_in top_posters
end
def top_posters
user_ids.map { |id| avatar_lookup[id] }.compact.uniq.take(5)
end
def user_ids
[ topic.user_id, topic.last_post_user_id, *topic.featured_user_ids ]
end
def avatar_lookup
@avatar_lookup ||= options[:avatar_lookup] || AvatarLookup.new(user_ids)
end
end