feat: support separate album by disc (#861)

Co-authored-by: BakerBunker <bakerbunker@nwpu.edu.cn>

src/views/album.vue

@@ -71,12 +71,25 @@
         </div>
       </div>
     </div>
-    <TrackList
-      :id="album.id"
-      :tracks="tracks"
-      :type="'album'"
-      :album-object="album"
-    />
+    <div v-if="Object.keys(tracksByDisc).length !== 1">
+      <div v-for="(disc, cd) in tracksByDisc" :key="cd">
+        <h2>Disc {{ cd }}</h2>
+        <TrackList
+          :id="album.id"
+          :tracks="disc"
+          :type="'album'"
+          :album-object="album"
+        />
+      </div>
+    </div>
+    <div v-else>
+      <TrackList
+        :id="album.id"
+        :tracks="tracks"
+        :type="'album'"
+        :album-object="album"
+      />
+    </div>
     <div class="extra-info">
       <div class="album-time"></div>
       <div class="release-date">
@@ -137,6 +150,7 @@ import locale from '@/locale';
 import { splitSoundtrackAlbumTitle, splitAlbumTitle } from '@/utils/common';
 import NProgress from 'nprogress';
 import { isAccountLoggedIn } from '@/utils/auth';
+import { groupBy } from 'lodash';
 
 import ExplicitSymbol from '@/components/ExplicitSymbol.vue';
 import ButtonTwoTone from '@/components/ButtonTwoTone.vue';
@@ -204,6 +218,9 @@ export default {
         return [...realAlbums, ...restItems].slice(0, 5);
       }
     },
+    tracksByDisc() {
+      return groupBy(this.tracks, 'cd');
+    },
   },
   created() {
     this.loadData(this.$route.params.id);