feat: add upload and delete option for releases

apps/products/views.py

@@ -1,10 +1,40 @@
+import mimetypes
+
+from django.http import FileResponse, Http404
 from django.shortcuts import get_object_or_404
+from django.views import View
 from django.views.generic import DetailView, ListView, TemplateView
 
-from .models import MainProduct, SubProduct
+from .models import MainProduct, SubProduct, SubProductVersion
+from .release_assets import FILE_FIELD_BY_ASSET_KEY, RELEASE_ASSET_KEYS, URL_FIELD_BY_ASSET_KEY
 from .release_context import build_archive_context, build_release_context
 
 
+class ReleaseAssetDownloadView(View):
+    def get(self, request, version_id, asset):
+        if asset not in RELEASE_ASSET_KEYS:
+            raise Http404
+        version = get_object_or_404(SubProductVersion, pk=version_id, is_active=True)
+        parent = version.sub_product or version.main_product
+        if parent is None or not parent.is_active:
+            raise Http404
+        url_field = URL_FIELD_BY_ASSET_KEY[asset]
+        if (getattr(version, url_field) or "").strip():
+            raise Http404
+        file_field = FILE_FIELD_BY_ASSET_KEY[asset]
+        release_file = getattr(version, file_field)
+        if not release_file:
+            raise Http404
+        filename = version.release_download_filename(asset)
+        content_type, _ = mimetypes.guess_type(filename)
+        return FileResponse(
+            release_file.open("rb"),
+            as_attachment=True,
+            filename=filename,
+            content_type=content_type or "application/octet-stream",
+        )
+
+
 class ProductOverviewView(ListView):
     model = MainProduct
     template_name = "products/overview.html"