implement super voters

app/models/comment_vote.rb

@@ -12,7 +12,7 @@ class CommentVote < ActiveRecord::Base
   attr_accessible :comment_id, :user_id, :score
 
   def self.prune!
-    destroy_all("created_at < ?", 14.days.ago)
+    where("created_at < ?", 14.days.ago).delete_all
   end
 
   def self.search(params)

app/models/post.rb

@@ -952,14 +952,22 @@ class Post < ActiveRecord::Base
       !PostVote.exists?(:user_id => user.id, :post_id => id)
     end
 
+    def vote_magnitude
+      if CurrentUser.is_super_voter?
+        SuperVoter::MAGNITUDE
+      else
+        1
+      end
+    end
+
     def vote!(score)
       if can_be_voted_by?(CurrentUser.user)
         if score == "up"
-          Post.where(:id => id).update_all("score = score + 1, up_score = up_score + 1")
-          self.score += 1
+          Post.where(:id => id).update_all("score = score + #{vote_magnitude}, up_score = up_score + #{vote_magnitude}")
+          self.score += vote_magnitude
         elsif score == "down"
-          Post.where(:id => id).update_all("score = score - 1, down_score = down_score - 1")
-          self.score -= 1
+          Post.where(:id => id).update_all("score = score - #{vote_magnitude}, down_score = down_score - #{vote_magnitude}")
+          self.score -= vote_magnitude
         end
 
         votes.create(:score => score)
@@ -975,11 +983,11 @@ class Post < ActiveRecord::Base
         vote = votes.where("user_id = ?", CurrentUser.user.id).first
 
         if vote.score == 1
-          Post.where(:id => id).update_all("score = score - 1, up_score = up_score - 1")
-          self.score -= 1
+          Post.where(:id => id).update_all("score = score - #{vote_magnitude}, up_score = up_score - #{vote_magnitude}")
+          self.score -= vote_magnitude
         else
-          Post.where(:id => id).update_all("score = score + 1, down_score = down_score + 1")
-          self.score += 1
+          Post.where(:id => id).update_all("score = score + #{vote_magnitude}, down_score = down_score + #{vote_magnitude}")
+          self.score += vote_magnitude
         end
 
         vote.destroy

app/models/post_vote.rb

@@ -7,6 +7,10 @@ class PostVote < ActiveRecord::Base
   validates_inclusion_of :score, :in => [1, -1]
   attr_accessible :post_id, :user_id, :score
 
+  def self.prune!
+    where("created_at < ?", 30.days.ago).delete_all
+  end
+
   def score=(x)
     if x == "up"
       write_attribute(:score, 1)

app/models/super_voter.rb

@@ -0,0 +1,33 @@
+class SuperVoter < ActiveRecord::Base
+  MAGNITUDE = 5
+  DURATION = 1.week
+
+  belongs_to :user
+  validates_uniqueness_of :user_id
+  after_create :update_user_on_create
+  after_destroy :update_user_on_destroy
+
+  def self.prune!
+    where("created_at < ?", DURATION.ago).destroy_all
+  end
+
+  def self.init!
+    report = Reports::UserSimilarity.new(User.admins.first.id)
+    report.prime
+    report.fetch_similar_user_ids.scan(/\S+/).in_groups_of(2).each do |user_id, score|
+      unless where("user_id = ?", user_id.to_i).exists?
+        create(:user_id => user_id)
+      end
+    end
+  end
+
+  def update_user_on_create
+    user.is_super_voter = true
+    user.save
+  end
+
+  def update_user_on_destroy
+    user.is_super_voter = false
+    user.save
+  end
+end

app/models/user.rb

@@ -33,6 +33,7 @@ class User < ActiveRecord::Base
     can_approve_posts
     can_upload_free
     disable_categorized_saved_searches
+    is_super_voter
   )
 
   include Danbooru::HasBitFlags
@@ -67,6 +68,7 @@ class User < ActiveRecord::Base
   has_one :recent_ban, lambda {order("bans.id desc")}, :class_name => "Ban"
   has_one :api_key
   has_one :dmail_filter
+  has_one :super_voter
   has_many :subscriptions, lambda {order("tag_subscriptions.name")}, :class_name => "TagSubscription", :foreign_key => "creator_id"
   has_many :note_versions, :foreign_key => "updater_id"
   has_many :dmails, lambda {order("dmails.id desc")}, :foreign_key => "owner_id"