Initial commit - SoundWave v1.0

- Full PWA support with offline capabilities
- Comprehensive search across songs, playlists, and channels
- Offline playlist manager with download tracking
- Pre-built frontend for zero-build deployment
- Docker-based deployment with docker compose
- Material-UI dark theme interface
- YouTube audio download and management
- Multi-user authentication support

backend/channel/views.py

@@ -0,0 +1,65 @@
+"""Channel API views"""
+
+from django.shortcuts import get_object_or_404
+from rest_framework import status
+from rest_framework.response import Response
+from channel.models import Channel
+from channel.serializers import ChannelSerializer
+from common.views import ApiBaseView, AdminWriteOnly
+
+
+class ChannelListView(ApiBaseView):
+    """Channel list endpoint"""
+    permission_classes = [AdminWriteOnly]
+
+    def get(self, request):
+        """Get channel list"""
+        channels = Channel.objects.filter(owner=request.user, subscribed=True)
+        serializer = ChannelSerializer(channels, many=True)
+        return Response({'data': serializer.data, 'paginate': True})
+
+    def post(self, request):
+        """Subscribe to channel - TubeArchivist pattern with Celery task"""
+        from channel.serializers import ChannelSubscribeSerializer
+        
+        # Check channel quota
+        if not request.user.can_add_channel:
+            return Response(
+                {'error': f'Channel limit reached. Maximum {request.user.max_channels} channels allowed.'},
+                status=status.HTTP_403_FORBIDDEN
+            )
+        
+        # Validate URL
+        url_serializer = ChannelSubscribeSerializer(data=request.data)
+        url_serializer.is_valid(raise_exception=True)
+        channel_url = request.data['url']
+        
+        # Trigger async Celery task (TubeArchivist pattern)
+        from task.tasks import subscribe_to_channel
+        task = subscribe_to_channel.delay(request.user.id, channel_url)
+        
+        return Response(
+            {
+                'message': 'Channel subscription task started',
+                'task_id': str(task.id)
+            },
+            status=status.HTTP_202_ACCEPTED
+        )
+
+
+class ChannelDetailView(ApiBaseView):
+    """Channel detail endpoint"""
+    permission_classes = [AdminWriteOnly]
+
+    def get(self, request, channel_id):
+        """Get channel details"""
+        channel = get_object_or_404(Channel, channel_id=channel_id, owner=request.user)
+        serializer = ChannelSerializer(channel)
+        return Response(serializer.data)
+
+    def delete(self, request, channel_id):
+        """Unsubscribe from channel"""
+        channel = get_object_or_404(Channel, channel_id=channel_id, owner=request.user)
+        channel.subscribed = False
+        channel.save()
+        return Response(status=status.HTTP_204_NO_CONTENT)