feat: add PlayNextQueue component to display upcoming tracks in Player

src/components/player/PlayNextQueue.tsx

@@ -0,0 +1,92 @@
+import { Badge } from '@/components/ui/badge'
+import { ScrollArea } from '@/components/ui/scroll-area'
+import { filesService } from '@/lib/api/services/files'
+import { type PlayerSound } from '@/lib/api/services/player'
+import { cn } from '@/lib/utils'
+import { formatDuration } from '@/utils/format-duration'
+import { Music, ListPlus } from 'lucide-react'
+
+interface PlayNextQueueProps {
+  queue: PlayerSound[]
+  variant?: 'normal' | 'maximized'
+}
+
+export function PlayNextQueue({ queue, variant = 'normal' }: PlayNextQueueProps) {
+  if (queue.length === 0) {
+    return null
+  }
+
+  return (
+    <div className="w-full">
+      {/* Header */}
+      <div className="flex items-center justify-between mb-2">
+        <div className="flex items-center gap-2">
+          <ListPlus className="h-4 w-4 text-muted-foreground" />
+          <h4 className="font-medium text-sm">Play Next</h4>
+        </div>
+        <Badge variant="secondary" className="text-xs">
+          {queue.length} {queue.length === 1 ? 'track' : 'tracks'}
+        </Badge>
+      </div>
+
+      {/* Track List */}
+      <ScrollArea className={variant === 'maximized' ? 'max-h-60' : 'max-h-40'}>
+        <div className="w-full">
+          {queue.map((sound, index) => (
+            <div
+              key={`${sound.id}-${index}`}
+              className={cn(
+                'grid grid-cols-10 gap-2 items-center py-1.5 px-2 rounded text-xs bg-muted/30',
+                index > 0 && 'mt-1',
+              )}
+            >
+              {/* Queue position - 1 column */}
+              <div className="col-span-1 flex justify-center">
+                <span className="text-muted-foreground">{index + 1}</span>
+              </div>
+
+              {/* Thumbnail - 1 column */}
+              <div className="col-span-1">
+                <div
+                  className={cn(
+                    'bg-muted rounded flex items-center justify-center overflow-hidden',
+                    variant === 'maximized' ? 'w-6 h-6' : 'w-5 h-5',
+                  )}
+                >
+                  {sound.thumbnail ? (
+                    <img
+                      src={filesService.getThumbnailUrl(sound.id)}
+                      alt=""
+                      className="w-full h-full object-cover"
+                    />
+                  ) : (
+                    <Music className="h-3 w-3 text-muted-foreground" />
+                  )}
+                </div>
+              </div>
+
+              {/* Track name - 6 columns */}
+              <div className="col-span-6">
+                <span
+                  className={cn(
+                    'font-medium truncate block text-muted-foreground',
+                    variant === 'maximized' ? 'text-sm' : 'text-xs',
+                  )}
+                >
+                  {sound.name}
+                </span>
+              </div>
+
+              {/* Duration - 2 columns */}
+              <div className="col-span-2 text-right">
+                <span className="text-muted-foreground text-xs whitespace-nowrap">
+                  {formatDuration(sound.duration)}
+                </span>
+              </div>
+            </div>
+          ))}
+        </div>
+      </ScrollArea>
+    </div>
+  )
+}

src/components/player/Player.tsx

@@ -18,6 +18,7 @@ import {
 import { useCallback, useEffect, useRef, useState } from 'react'
 import { toast } from 'sonner'
 import { Playlist } from './Playlist'
+import { PlayNextQueue } from './PlayNextQueue'
 import { PlayerControls } from './PlayerControls'
 import { PlayerProgress } from './PlayerProgress'
 import { PlayerTrackInfo } from './PlayerTrackInfo'
@@ -66,6 +67,11 @@ function isPlayerStateEqual(state1: PlayerState, state2: PlayerState): boolean {
     }
   }
 
+  // Compare play_next_queue length
+  if (state1.play_next_queue.length !== state2.play_next_queue.length) {
+    return false
+  }
+
   return true
 }
 
@@ -81,6 +87,7 @@ export function Player({ className, onPlayerModeChange }: PlayerProps) {
     volume: 80,
     previous_volume: 80,
     position: 0,
+    play_next_queue: [],
   })
   const [displayMode, setDisplayMode] = useState<PlayerDisplayMode>(() => {
     // Initialize from localStorage or default to 'normal'
@@ -368,6 +375,13 @@ export function Player({ className, onPlayerModeChange }: PlayerProps) {
                 )
               }
             />
+
+            {/* Play Next Queue */}
+            {state.play_next_queue.length > 0 && (
+              <div className="mt-4 pt-4 border-t">
+                <PlayNextQueue queue={state.play_next_queue} />
+              </div>
+            )}
           </div>
         )}
       </CardContent>
@@ -453,6 +467,13 @@ export function Player({ className, onPlayerModeChange }: PlayerProps) {
                 }
                 variant="maximized"
               />
+
+              {/* Play Next Queue */}
+              {state.play_next_queue.length > 0 && (
+                <div className="mt-4 pt-4 border-t">
+                  <PlayNextQueue queue={state.play_next_queue} variant="maximized" />
+                </div>
+              )}
             </div>
           </div>
         )}