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android: recital albums show no composer; a lone track inherits the previous work's composer heading

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
76/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Active
Tech stack
android, kotlin
Domain
frontend, mobile

Research direction

Start in android/presentation/src/commonMain/kotlin/com/simplecityapps/shuttle/ui/screens/library/albums/detail/AlbumRows.kt, focusing on buildAlbumRows and how it handles work blocks versus lone tracks. Add the recital case to the classical test media described in #1079, then add a buildAlbumRows test for a lone track between works by different composers and a recital with one work block. Done means composer headings follow composer runs across both item types, untagged lone tracks do not break a run, and a lone track’s Now Playing composer line is checked.

Written by the indexing model from the issue text.

Description

bug impact:U2 P2 reach:R2 size:S

On a recital album (one performer, works by many composers, most of them single tracks) the classical album page shows no composer anywhere, and a lone track between two works sits under the wrong composer heading.

Example: user-supplied Naxos "Guitar Recital" (Anabel Montesinos, 2003): 11 tracks, 8 composers, one two-movement work (Coste, tracks 2–3), every other track a lone piece with its own COMPOSER. Rendering today: eyebrow is null (mixed composers), no composer headings (only one work block, so composers.size > 1 is false), and every track subtitle is empty because artist equals album artist. Eight composers vanish.

Cause, both in buildAlbumRows (android/presentation/src/commonMain/kotlin/com/simplecityapps/shuttle/ui/screens/library/albums/detail/AlbumRows.kt):

  • composers and headings are computed from work blocks only; AlbumItem.Track rows never contribute a composer and never get a heading or subtitle.
  • lastComposer is only updated on work blocks, so with headings on, a lone Arcas track between a Coste work and a Mertz work renders under "Coste".

Expected: composer runs are computed over every item (works and lone tracks). When the album has more than one composer, a heading opens each run, lone tracks included; a lone track with no composer tag breaks no run (bonus-track rule already used for the eyebrow). The Now Playing composer line should hold for these tracks too (check composerDisplayName on a lone track). Add the recital to the classical test media (see #1079) and a buildAlbumRows test for: lone track between two works by different composers; recital with one work block.

Impact U2 (composer is the primary way a classical listener reads a recital) · Reach R2 (one report; recital and competition discs are a common album type) · Implemented: no · Design fit: fits (#1065 "composer headings where the composer changes between works, as on a recital" was the intent, tracks were missed) · Complexity: S

Dominant language
Kotlin
Stars
231
Forks
28
No merged PRs in 30d

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