Refactor app in to its own slice

slices/main/queries/posts/top_tracks.rb

@@ -0,0 +1,41 @@
+require "lastfm"
+require "time_math"
+
+module Main
+  module Queries
+    module Posts
+      class TopTracks
+        include Deps["settings", "repos.post_repo", "repos.top_track_repo"]
+
+        def call(slug:)
+          ENV["TZ"] = "Australia/Melbourne"
+          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)
+
+          tracks = lastfm.user.get_weekly_track_chart(user: "dNitza", from: start_date, to: end_date)
+
+          track = if tracks.is_a? Array
+            tracks.first
+          else
+            tracks
+          end
+
+          if track
+            mb_id = (track["mbid"] == {}) ? "unknown" : track["mbid"]
+            top_track_repo.upsert(post_id: post.id, name: track["name"], artist: track.dig("artist", "content"), url: track["url"], mb_id: mb_id)
+          end
+          ENV["TZ"] = nil
+
+          top_track_repo.for_post(id: post.id)
+        end
+      end
+    end
+  end
+end