FEATURE: first pass at user summary page

app/models/user_summary.rb

@@ -0,0 +1,56 @@
+# ViewModel used on Summary tab on User page
+
+class UserSummary
+
+  MAX_FEATURED_BADGES = 7
+  MAX_TOPICS = 6
+
+  alias :read_attribute_for_serialization :send
+
+  def initialize(user, guardian)
+    @user = user
+    @guardian = guardian
+  end
+
+  def topics
+    Topic
+      .secured(@guardian)
+      .listable_topics
+      .where(user: @user)
+      .order('like_count desc, created_at asc')
+      .includes(:user, :category)
+      .limit(MAX_TOPICS)
+  end
+
+  def replies
+    Post
+      .secured(@guardian)
+      .where(user: @user)
+      .where('post_number > 1')
+      .where('topics.archetype <> ?', Archetype.private_message)
+      .order('posts.like_count desc, posts.created_at asc')
+      .includes(:user, {topic: :category})
+      .references(:topic)
+      .limit(MAX_TOPICS)
+  end
+
+  def badges
+    user_badges = @user.user_badges
+    user_badges = user_badges.group(:badge_id)
+                      .select(UserBadge.attribute_names.map {|x|
+                        "MAX(#{x}) as #{x}" }, 'COUNT(*) as count')
+                        .includes(badge: [:badge_grouping, :badge_type])
+                        .includes(post: :topic)
+                        .includes(:granted_by)
+                        .limit(MAX_FEATURED_BADGES)
+  end
+
+  def user_stat
+    @user.user_stat
+  end
+
+  delegate :likes_given, :likes_received, :days_visited,
+           :posts_read_count, :topic_count, :post_count,
+           to: :user_stat
+
+end