dav_submission: added email notification, zip-download and permission

check.

dav_submission/views.py

@@ -6,15 +6,19 @@ import os
 import pytz
 import re
 import urllib
+import zipfile
 from django.apps import apps
 from django.contrib import messages
+from django.contrib.auth.decorators import login_required
 from django.core.exceptions import PermissionDenied
 from django.http import FileResponse, Http404
 from django.urls import reverse_lazy
 from django.utils import timezone
+from django.utils.decorators import method_decorator
 from django.utils.translation import ugettext as _
 from django.views import generic
 
+from .emails import NewSubmissionMail
 from .forms import UploadForm
 
 app_config = apps.get_containing_app_config(__package__)
@@ -71,9 +75,16 @@ class ListView(generic.ListView):
         qs = [all_metadata[subdir] for subdir in subdirs]
         return qs
 
+    @method_decorator(login_required)
+    def dispatch(self, request, *args, **kwargs):
+        if not request.user.has_perm('download_submissions'):
+            raise PermissionDenied()
+        return super(ListView, self).dispatch(request, *args, **kwargs)
+
 
 class DownloadView(generic.DetailView):
     def get(self, request, *args, **kwargs):
+        cached_zip_file_name = app_config.settings.cached_zip_file_name
         base_path = app_config.settings.upload_path
 
         pk = kwargs.get('pk')
@@ -82,11 +93,22 @@ class DownloadView(generic.DetailView):
         else:
             subdir = urllib.parse.unquote_plus(pk)
 
-        path = os.path.join(base_path, subdir)
+        submission_dir = os.path.join(base_path, subdir)
 
-        if not os.path.isdir(path):
+        if not os.path.isdir(submission_dir):
             raise Http404()
 
+        cached_zip = os.path.join(submission_dir, cached_zip_file_name)
+        if not os.path.isfile(cached_zip):
+            with open(cached_zip, 'wb') as cache_f:
+                with zipfile.ZipFile(cache_f, 'w') as z:
+                    for filename in os.listdir(submission_dir):
+                        if filename == cached_zip_file_name:
+                            continue
+                        z.write(os.path.join(submission_dir, filename), os.path.join(subdir, filename))
+
+        zip_f = open(cached_zip, 'rb')
+
         file_name = subdir
         file_ext = '.zip'
         mime_type = 'application/zip'
@@ -95,15 +117,18 @@ class DownloadView(generic.DetailView):
             file_ext=file_ext,
         )
 
-        raise Exception('Not Implemented yet')
-        file_obj = open(path, 'rb')
-
-        response = FileResponse(streaming_content=file_obj, content_type=mime_type)
+        response = FileResponse(streaming_content=zip_f, content_type=mime_type)
         disposition_header = 'attachment; filename="{}"'.format(disposition_file_name)
         response['Content-Disposition'] = disposition_header
 
         return response
 
+    @method_decorator(login_required)
+    def dispatch(self, request, *args, **kwargs):
+        if not request.user.has_perm('download_submissions'):
+            raise PermissionDenied()
+        return super(DownloadView, self).dispatch(request, *args, **kwargs)
+
 
 class UploadView(generic.edit.FormView):
     initial = {
@@ -235,6 +260,8 @@ Beschreibung:
             logger.error('dav_submission.views.UploadView.form_valid(): Catched Exception #3: %s', str(e))
             return super(UploadView, self).form_valid(form)
 
+        mail = NewSubmissionMail(metadata_format_kwargs)
+        mail.send()
         return super(UploadView, self).form_valid(form)
 
     def post(self, request, *args, **kwargs):