Add function to download a record's tracklist for printing

2026-03-09 13:39:12 +00:00
parent 1bc01a2346
commit 4569c6727e
9 changed files with 332 additions and 17 deletions
@@ -0,0 +1,140 @@
+defmodule MusicLibrary.Records.TracklistPdfTest do
+  use ExUnit.Case, async: true
+
+  alias MusicBrainz.Release
+  alias MusicLibrary.Records.{Record, TracklistPdf}
+
+  @pdf_magic_bytes <<37, 80, 68, 70>>
+
+  describe "generate/2" do
+    test "generates PDF for single-disc release" do
+      record = build_record(%{title: "OK Computer", artists: [%{name: "Radiohead"}]})
+
+      release =
+        build_release([
+          build_medium(1, [
+            build_track(1, "Airbag", 284_533),
+            build_track(2, "Paranoid Android", 383_000)
+          ])
+        ])
+
+      assert {:ok, <<@pdf_magic_bytes, _::binary>>} = TracklistPdf.generate(record, release)
+    end
+
+    test "generates PDF for multi-disc release" do
+      record = build_record(%{title: "Marbles", artists: [%{name: "Marillion"}]})
+      api_response = MusicBrainz.Fixtures.Release.release_with_media(:marbles)
+      release = Release.from_api_response(api_response)
+
+      assert {:ok, <<@pdf_magic_bytes, _::binary>>} = TracklistPdf.generate(record, release)
+    end
+
+    test "renders artist joinphrase correctly" do
+      record =
+        build_record(%{
+          title: "Collab Album",
+          artists: [
+            %{name: "Artist A", joinphrase: " & "},
+            %{name: "Artist B"}
+          ]
+        })
+
+      release =
+        build_release([
+          build_medium(1, [build_track(1, "Track One", 200_000)])
+        ])
+
+      assert {:ok, <<@pdf_magic_bytes, _::binary>>} = TracklistPdf.generate(record, release)
+    end
+
+    test "handles track without duration" do
+      record = build_record(%{title: "Test Album", artists: [%{name: "Test Artist"}]})
+
+      release =
+        build_release([
+          build_medium(1, [
+            build_track(1, "Has Duration", 180_000),
+            build_track(2, "No Duration", nil)
+          ])
+        ])
+
+      assert {:ok, <<@pdf_magic_bytes, _::binary>>} = TracklistPdf.generate(record, release)
+    end
+
+    test "handles special characters in title" do
+      record =
+        build_record(%{
+          title: "Album *with* #special @chars",
+          artists: [%{name: "Artist #1"}]
+        })
+
+      release =
+        build_release([
+          build_medium(1, [
+            build_track(1, "Track *starring* @someone", 200_000),
+            build_track(2, "#Hashtag Title", 180_000)
+          ])
+        ])
+
+      assert {:ok, <<@pdf_magic_bytes, _::binary>>} = TracklistPdf.generate(record, release)
+    end
+  end
+
+  defp build_record(attrs) do
+    artists =
+      Enum.map(Map.get(attrs, :artists, []), fn a ->
+        %{
+          name: a[:name] || a.name,
+          sort_name: a[:sort_name] || a[:name] || a.name,
+          musicbrainz_id: "00000000-0000-0000-0000-000000000000",
+          disambiguation: "",
+          joinphrase: a[:joinphrase] || ""
+        }
+      end)
+
+    %Record{
+      id: Ecto.UUID.generate(),
+      title: attrs[:title] || "Test Album",
+      artists: artists,
+      genres: [],
+      type: :album,
+      format: :cd
+    }
+  end
+
+  defp build_release(media) do
+    %Release{
+      id: "00000000-0000-0000-0000-000000000000",
+      title: "Test Release",
+      disambiguation: nil,
+      packaging: nil,
+      artists: [],
+      date: "2024-01-01",
+      barcode: nil,
+      catalog_number: "",
+      country: nil,
+      media: media
+    }
+  end
+
+  defp build_medium(number, tracks) do
+    %Release.Medium{
+      title: nil,
+      format: "CD",
+      number: number,
+      track_count: length(tracks),
+      tracks: tracks
+    }
+  end
+
+  defp build_track(position, title, length) do
+    %Release.Track{
+      id: Ecto.UUID.generate(),
+      title: title,
+      artists: [],
+      length: length,
+      number: to_string(position),
+      position: position
+    }
+  end
+end