Improve performance for library and title pages

src/library.cr

@@ -374,7 +374,7 @@ class Title
   end
 
   def deep_read_page_count(username) : Int32
-    entries.map { |e| e.load_progress username }.sum +
+    load_progress_for_all_entries(username).sum +
       titles.map { |t| t.deep_read_page_count username }.flatten.sum
   end
 
@@ -402,6 +402,28 @@ class Title
     end
   end
 
+  def load_progress_for_all_entries(username)
+    progress = {} of String => Int32
+    TitleInfo.new @dir do |info|
+      progress = info.progress[username]?
+    end
+
+    @entries.map do |e|
+      info_progress = 0
+      if progress && progress.has_key? e.title
+        info_progress = [progress[e.title], e.pages].min
+      end
+      info_progress
+    end
+  end
+
+  def load_percentage_for_all_entries(username)
+    progress = load_progress_for_all_entries username
+    @entries.map_with_index do |e, i|
+      progress[i] / e.pages
+    end
+  end
+
   # === helper methods ===
 
   # Gets the last read entry in the title. If the entry has been completed,

src/routes/main.cr

@@ -53,7 +53,7 @@ class MainRouter < Router
       begin
         title = (@context.library.get_title env.params.url["title"]).not_nil!
         username = get_username env
-        percentage = title.entries.map &.load_percentage username
+        percentage = title.load_percentage_for_all_entries username
         title_percentage = title.titles.map &.load_percentage username
         layout "title"
       rescue e