FEATURE: Make emotion /filter ordering match the dashboard table

lib/sentiment/emotion_filter_order.rb

@@ -6,21 +6,31 @@ class EmotionFilterOrder
       def self.register!(plugin)
         Emotions::LIST.each do |emotion|
           filter_order_emotion = ->(scope, order_direction) do
+            scope_period =
+              scope
+                .arel
+                .constraints
+                .flat_map(&:children)
+                .find do |node|
+                  node.is_a?(Arel::Nodes::Grouping) &&
+                    node.expr.to_s.match?(/topics\.bumped_at\s*>=/)
+                end
+                &.expr
+                &.split(">=")
+                &.last
+
+            # Fallback in case we can't find the scope period
+            scope_period ||= "CURRENT_DATE - INTERVAL '1 year'"
+
             emotion_clause = <<~SQL
-              SUM(
-                CASE
-                  WHEN (classification_results.classification::jsonb->'#{emotion}')::float > 0.1
-                  THEN 1
-                  ELSE 0
-                END
-               )::float / COUNT(posts.id)
+              COUNT(*) FILTER (WHERE (classification_results.classification::jsonb->'#{emotion}')::float > 0.1) AS emotion_#{emotion}
             SQL
 
             # TODO: This is slow, we will need to materialize this in the future
             with_clause = <<~SQL
                 SELECT
                     topics.id,
-                    #{emotion_clause} AS emotion_#{emotion}
+                    #{emotion_clause}
                 FROM
                     topics
                 INNER JOIN
@@ -35,10 +45,9 @@ def self.register!(plugin)
                     AND topics.deleted_at IS NULL
                     AND posts.deleted_at IS NULL
                     AND posts.post_type = 1
+                    AND posts.created_at >= #{scope_period}
                 GROUP BY
                     1
-                HAVING
-                    #{emotion_clause} > 0.05
             SQL
 
             scope