continue reading sorted by last read

src/routes/main.cr

@@ -75,10 +75,41 @@ class MainRouter < Router
           t.get_continue_reading_entry username
         }.select Entry
 
-        percentage = continue_reading_entries.map do |e|
+        percentage = continue_reading_entries.map { |e|
           e.book.load_percentage username, e.title
-          pp e.book.load_last_read username, e.title
-        end
+        }
+
+        last_read = continue_reading_entries.map { |e|
+          e.book.get_last_read_for_continue_reading username, e
+        }
+
+        # Group values in a NamedTuple for easier sorting
+        cr_entries = continue_reading_entries.map_with_index { |e, i|
+          {
+            entry: e,
+            percentage: percentage[i],
+            # if you're ok with the NamedTuple approach we could remove the
+            # percentage and last_read vars above and just call the methods 
+            # here eg.
+            # perecentage: e.book.load_percentage username, e.title
+            last_read: last_read[i]
+          }
+        }
+        # I couldn't get the sort to work where last_read type is `Time | Nil`
+        # so I'm creating a new variable with just the entries that have last_read
+        # even still, I have to do another workaround within the sort below :/
+        cr_entries_not_nil = cr_entries.select { |e| e[:last_read] }
+        cr_entries_not_nil.sort! { |a, b| 
+          # 'if' ensures values aren't nil otherwise the compiler errors
+          # because it still thinks the NamedTuple `last_read` can be nil
+          # even though we only 'select'ed the objects which have last_read
+          # there's probably a better way to do this
+          if (a_time = a[:last_read]) && (b_time = b[:last_read])
+            b_time <=> a_time
+          end
+        }
+        # add `last_read == nil` entries AFTER sorted entries
+        continue_reading = cr_entries_not_nil + cr_entries.select { |e| e[:last_read].nil? }
 
         layout "home"
       rescue e