Add naive impl of seeding alerts

app/lib/nps_client.rb

@@ -7,6 +7,10 @@ class NpsClient
     conn.get('parks', { start: offset })
   end
 
+  def alerts(park_code:, offset: 0)
+    conn.get('alerts', { parkCode: park_code, start: offset })
+  end
+
   private
 
   def conn

app/services/seed/alerts.rb

@@ -0,0 +1,23 @@
+class Seed::Alerts
+  def self.call(...)
+    new(...).call
+  end
+
+  def call
+    Park.find_each do |park|
+      offset, total = 0, 1
+      while offset < total do
+        response_body = NpsClient.current.alerts(park_code: park.code, offset: offset).body
+        offset = response_body['start'].to_i + response_body['limit'].to_i
+        total = response_body['total'].to_i
+        alerts = response_body['data']
+          .pluck('id', 'category', 'description', 'lastIndexedDate', 'parkCode', 'title', 'url')
+          .map do |identifier, category, description, indexed_date, park_code, title, url|
+            { identifier:, category:, description:, indexed_date:, park_code:, title:, url: }
+          end
+        Alert.upsert_all(alerts, unique_by: :identifier)
+        Rails.logger.info("Upserted #{alerts.count} alerts for #{park.name}")
+      end
+    end
+  end
+end