fix(ui): replaygain for Artist Radio and Top Songs (#4328)

* Map replaygain info from getSimilarSongs2

* refactor: rename mapping function

Signed-off-by: Deluan <deluan@navidrome.org>

* refactor: Applied code review improvements

Signed-off-by: Deluan <deluan@navidrome.org>

---------

Signed-off-by: Deluan <deluan@navidrome.org>

ui/src/artist/ArtistActions.test.jsx

@@ -49,11 +49,21 @@ describe('ArtistActions', () => {
     // Mock console.error to suppress error logging in tests
     vi.spyOn(console, 'error').mockImplementation(() => {})
 
+    const songWithReplayGain = {
+      id: 'rec1',
+      replayGain: {
+        albumGain: -5,
+        albumPeak: 1,
+        trackGain: -6,
+        trackPeak: 0.8,
+      },
+    }
+
     subsonic.getSimilarSongs2.mockResolvedValue({
       json: {
         'subsonic-response': {
           status: 'ok',
-          similarSongs2: { song: [{ id: 'rec1' }] },
+          similarSongs2: { song: [songWithReplayGain] },
         },
       },
     })
@@ -61,7 +71,7 @@ describe('ArtistActions', () => {
       json: {
         'subsonic-response': {
           status: 'ok',
-          topSongs: { song: [{ id: 'rec1' }] },
+          topSongs: { song: [songWithReplayGain] },
         },
       },
     })
@@ -93,6 +103,22 @@ describe('ArtistActions', () => {
       )
       expect(mockDispatch).toHaveBeenCalled()
     })
+
+    it('maps replaygain info', async () => {
+      renderArtistActions()
+      clickActionButton('radio')
+
+      await waitFor(() =>
+        expect(subsonic.getSimilarSongs2).toHaveBeenCalledWith('ar1', 100),
+      )
+      const action = mockDispatch.mock.calls[0][0]
+      expect(action.data.rec1).toMatchObject({
+        rgAlbumGain: -5,
+        rgAlbumPeak: 1,
+        rgTrackGain: -6,
+        rgTrackPeak: 0.8,
+      })
+    })
   })
 
   describe('Play action', () => {
@@ -106,6 +132,22 @@ describe('ArtistActions', () => {
       expect(mockDispatch).toHaveBeenCalled()
     })
 
+    it('maps replaygain info for top songs', async () => {
+      renderArtistActions()
+      clickActionButton('topSongs')
+
+      await waitFor(() =>
+        expect(subsonic.getTopSongs).toHaveBeenCalledWith('Artist', 100),
+      )
+      const action = mockDispatch.mock.calls[0][0]
+      expect(action.data.rec1).toMatchObject({
+        rgAlbumGain: -5,
+        rgAlbumPeak: 1,
+        rgTrackGain: -6,
+        rgTrackPeak: 0.8,
+      })
+    })
+
     it('handles API rejection', async () => {
       subsonic.getTopSongs.mockRejectedValue(new Error('Network error'))
 

ui/src/artist/actions.js

@@ -1,6 +1,32 @@
 import subsonic from '../subsonic/index.js'
 import { playTracks } from '../actions/index.js'
 
+const mapReplayGain = (song) => {
+  const { replayGain: rg } = song
+  if (!rg) {
+    return song
+  }
+
+  return {
+    ...song,
+    ...(rg.albumGain !== undefined && { rgAlbumGain: rg.albumGain }),
+    ...(rg.albumPeak !== undefined && { rgAlbumPeak: rg.albumPeak }),
+    ...(rg.trackGain !== undefined && { rgTrackGain: rg.trackGain }),
+    ...(rg.trackPeak !== undefined && { rgTrackPeak: rg.trackPeak }),
+  }
+}
+
+const processSongsForPlayback = (songs) => {
+  const songData = {}
+  const ids = []
+  songs.forEach((s) => {
+    const song = mapReplayGain(s)
+    songData[song.id] = song
+    ids.push(song.id)
+  })
+  return { songData, ids }
+}
+
 export const playTopSongs = async (dispatch, notify, artistName) => {
   const res = await subsonic.getTopSongs(artistName, 100)
   const data = res.json['subsonic-response']
@@ -17,12 +43,7 @@ export const playTopSongs = async (dispatch, notify, artistName) => {
     return
   }
 
-  const songData = {}
+  const { songData, ids } = processSongsForPlayback(songs)
-  const ids = []
-  songs.forEach((s) => {
-    songData[s.id] = s
-    ids.push(s.id)
-  })
   dispatch(playTracks(songData, ids))
 }
 
@@ -42,12 +63,7 @@ export const playSimilar = async (dispatch, notify, id) => {
     return
   }
 
-  const songData = {}
+  const { songData, ids } = processSongsForPlayback(songs)
-  const ids = []
-  songs.forEach((s) => {
-    songData[s.id] = s
-    ids.push(s.id)
-  })
   dispatch(playTracks(songData, ids))
 }