query by timespent

app/controllers/messages_controller.rb

@@ -27,6 +27,35 @@ def message
     end
   end
 
+  def timespent
+    unit = params[:unit].singularize
+    if unit == 'second'
+      distance = params[:number].to_i
+    elsif unit == 'minute'
+      distance = params[:number].to_i * 60
+    elsif unit == 'hour'
+      distance = params[:number].to_i * 60 * 60
+    elsif unit == 'day'
+      distance = params[:number].to_i * 60 * 60 * 24
+    else
+      raise 'Invalid unit'
+    end
+
+    @messages = if params[:op] == 'gt'
+                  Message.where(
+                    'dispatch_block_timestamp IS NOT NULL AND round(extract(epoch from(dispatch_block_timestamp - block_timestamp)))::int > ?', distance
+                  )
+                elsif params[:op] == 'lt'
+                  Message.where(
+                    'dispatch_block_timestamp IS NOT NULL AND round(extract(epoch from(dispatch_block_timestamp - block_timestamp)))::int < ?', distance
+                  )
+                else
+                  raise 'Invalid operator'
+                end
+    @messages = @messages.order(block_timestamp: :desc).page(params[:page]).per(25)
+    render :index
+  end
+
   private
 
   # Use callbacks to share common setup or constraints between actions.

config/routes.rb

@@ -10,8 +10,13 @@
   resources :messages, only: %i[index]
 
   get 'message' => 'messages#message', as: :message
+
+  get 'messages/timespent/:op/:number/:unit' => 'messages#timespent',
+      as: :messages_timespent
+
   get 'messages/:tx_or_hash' => 'messages#show',
       as: :message_by_tx_or_hash,
       constraints: { tx_or_hash: /0x[0-9a-fA-F]{64}/ }
+
   get 'messages/:from_network(/:to_network)' => 'messages#index', as: :network_messages
 end