Cache top tracks

app/queries/posts/top_tracks.rb

@@ -5,14 +5,26 @@ module Adamantium
   module Queries
     module Posts
       class TopTracks
-        include Deps["settings", "repos.post_repo"]
+        include Deps["settings", "repos.post_repo", "repos.top_track_repo"]
 
         def call(slug:)
           post = post_repo.fetch!(slug)
+          start_date = TimeMath.week.floor(post.published_at).to_i
+          end_date = TimeMath.week.ceil(post.published_at).to_i
+
+          top_tracks = top_track_repo.for_post(id: post.id)
+
+          return top_tracks unless top_tracks.empty?
 
           lastfm = Lastfm.new(settings.lastfm_api_key, settings.lastfm_secret)
 
-          lastfm.user.get_weekly_track_chart(user: "dNitza", from: TimeMath.week.floor(post.published_at).to_i, to: TimeMath.week.ceil(post.published_at).to_i)
+          tracks = lastfm.user.get_weekly_track_chart(user: "dNitza", from: start_date, to: end_date)
+
+          if track = tracks.first
+            top_track_repo.upsert(post_id: post.id, name: track["name"], artist: track.dig("artist", "content"), url: track["url"], mb_id: track["mbid"])
+          end
+
+          top_track_repo.for_post(id: post.id)
         end
       end
     end

app/repos/top_track_repo.rb

@@ -0,0 +1,17 @@
+module Adamantium
+  module Repos
+    class TopTrackRepo < Adamantium::Repo[:top_tracks]
+      def for_post(id:)
+        top_tracks
+          .where(post_id: id)
+          .to_a
+      end
+
+      def upsert(post_id:, name:, artist:, url:, mb_id:)
+        top_tracks
+          .upsert({name: name, artist: artist, url: url, mb_id: mb_id, post_id: post_id},
+                          { target: :post_id, update: {name: name, artist: artist, url: url, mb_id: mb_id, post_id: post_id} })
+      end
+    end
+  end
+end

app/views/posts/top_tracks.rb

@@ -5,15 +5,15 @@ module Adamantium
         config.layout = false
 
         expose :name do |track:|
-          track["name"]
+          track.name
         end
 
         expose :artist do |track:|
-          track.dig("artist", "content")
+          track.artist
         end
 
         expose :url do |track:|
-          track["url"]
+          track.url
         end
       end
     end