posts: move fast_count to PostQueryBuilder.

app/models/post.rb

@@ -588,6 +588,14 @@ class Post < ApplicationRecord
       end
     end
 
+    def fix_post_counts(post)
+      post.set_tag_counts(false)
+      if post.changes_saved?
+        args = Hash[TagCategory.categories.map {|x| ["tag_count_#{x}", post.send("tag_count_#{x}")]}].update(:tag_count => post.tag_count)
+        post.update_columns(args)
+      end
+    end
+
     def merge_old_changes
       reset_tag_array_cache
       @removed_tags = []
@@ -1065,97 +1073,6 @@ class Post < ApplicationRecord
     end
   end
 
-  module CountMethods
-    def fast_count(tags = "", timeout: 1_000, raise_on_timeout: false, skip_cache: false)
-      tags = tags.to_s
-      tags += " rating:s" if CurrentUser.safe_mode?
-      tags += " -status:deleted" if CurrentUser.hide_deleted_posts? && !PostQueryBuilder.new(tags).has_metatag?("status")
-      tags = PostQueryBuilder.new(tags).normalize_query(normalize_aliases: true)
-
-      # Optimize some cases. these are just estimates but at these
-      # quantities being off by a few hundred doesn't matter much
-      if Danbooru.config.estimate_post_counts
-        if tags == ""
-          return (Post.maximum(:id).to_i * (2200402.0 / 2232212)).floor
-
-        elsif tags =~ /^rating:s(?:afe)?$/
-          return (Post.maximum(:id).to_i * (1648652.0 / 2200402)).floor
-
-        elsif tags =~ /^rating:q(?:uestionable)?$/
-          return (Post.maximum(:id).to_i * (350101.0 / 2200402)).floor
-
-        elsif tags =~ /^rating:e(?:xplicit)?$/
-          return (Post.maximum(:id).to_i * (201650.0 / 2200402)).floor
-
-        end
-      end
-
-      count = nil
-
-      unless skip_cache
-        count = get_count_from_cache(tags)
-      end
-
-      if count.nil?
-        count = fast_count_search(tags, timeout: timeout, raise_on_timeout: raise_on_timeout)
-      end
-
-      count
-    rescue SearchError
-      0
-    end
-
-    def fast_count_search(tags, timeout:, raise_on_timeout:)
-      count = Post.with_timeout(timeout, nil, tags: tags) do
-        Post.tag_match(tags).count
-      end
-
-      if count.nil?
-        # give up
-        if raise_on_timeout
-          raise TimeoutError.new("timed out")
-        end
-
-        count = Danbooru.config.blank_tag_search_fast_count
-      else
-        set_count_in_cache(tags, count)
-      end
-
-      count ? count.to_i : nil
-    rescue PG::ConnectionBad
-      return nil
-    end
-
-    def fix_post_counts(post)
-      post.set_tag_counts(false)
-      if post.changes_saved?
-        args = Hash[TagCategory.categories.map {|x| ["tag_count_#{x}", post.send("tag_count_#{x}")]}].update(:tag_count => post.tag_count)
-        post.update_columns(args)
-      end
-    end
-
-    def get_count_from_cache(tags)
-      if PostQueryBuilder.new(tags).is_simple_tag?
-        count = Tag.find_by(name: tags).try(:post_count)
-      else
-        # this will only have a value for multi-tag searches or single metatag searches
-        count = Cache.get(count_cache_key(tags))
-      end
-
-      count.try(:to_i)
-    end
-
-    def set_count_in_cache(tags, count, expiry = nil)
-      expiry ||= count.seconds.clamp(3.minutes, 20.hours).to_i
-
-      Cache.put(count_cache_key(tags), count, expiry)
-    end
-
-    def count_cache_key(tags)
-      "pfc:#{Cache.hash(tags)}"
-    end
-  end
-
   module ParentMethods
     # A parent has many children. A child belongs to a parent.
     # A parent cannot have a parent.
@@ -1715,7 +1632,6 @@ class Post < ApplicationRecord
   include FavoriteMethods
   include PoolMethods
   include VoteMethods
-  extend CountMethods
   include ParentMethods
   include DeletionMethods
   include VersionMethods