dav_submission: added first stuff for downloading submissions.

dav_submission/views.py

@@ -3,9 +3,13 @@ import codecs
 import datetime
 import logging
 import os
+import pytz
+import re
+import urllib
 from django.apps import apps
 from django.contrib import messages
 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.translation import ugettext as _
@@ -17,6 +21,90 @@ app_config = apps.get_containing_app_config(__package__)
 logger = logging.getLogger(__name__)
 
 
+class ListView(generic.ListView):
+    template_name = 'dav_submission/list.html'
+
+    def get_queryset(self):
+        base_path = app_config.settings.upload_path
+        metadata_file_name = app_config.settings.metadata_file_name
+
+        subdirs = os.listdir(base_path)
+        all_metadata = {}
+        for subdir in subdirs:
+            metadata_file_path = os.path.join(base_path, subdir, metadata_file_name)
+            if hasattr(urllib, 'quote_plus'):
+                pk = urllib.quote_plus(subdir)
+            else:
+                pk = urllib.parse.quote_plus(subdir)
+            metadata = {
+                'pk': pk,
+                'name': None,
+                'email_address': None,
+                'title': None,
+                'timestamp': None,
+            }
+            with open(metadata_file_path) as f:
+                for line in f:
+                    mo = re.match(r'^Absender: (.*) <(.*)>$', line)
+                    if mo is not None:
+                        metadata['name'] = mo.group(1)
+                        metadata['email_address'] = mo.group(2)
+                        continue
+                    mo = re.match(r'^Titel: (.*)$', line)
+                    if mo is not None:
+                        metadata['title'] = mo.group(1)
+                        continue
+                    mo = re.match(r'^Datum: ([0-9]{2}.[0-9]{2}.[0-9]{4}) ([0-9]{2}:[0-9]{2}:[0-9]{2}) (.*)$', line)
+                    if mo is not None:
+                        date_str = mo.group(1)
+                        time_str = mo.group(2)
+                        zone_str = mo.group(3)
+                        datetime_str = '{} {}'.format(date_str, time_str)
+                        timestamp = datetime.datetime.strptime(datetime_str, '%d.%m.%Y %H:%M:%S')
+                        tz = pytz.timezone(zone_str)
+                        metadata['timestamp'] = tz.localize(timestamp)
+                        continue
+
+            all_metadata[subdir] = metadata
+
+        sorted(subdirs)
+        qs = [all_metadata[subdir] for subdir in subdirs]
+        return qs
+
+
+class DownloadView(generic.DetailView):
+    def get(self, request, *args, **kwargs):
+        base_path = app_config.settings.upload_path
+
+        pk = kwargs.get('pk')
+        if hasattr(urllib, 'unquote_plus'):
+            subdir = urllib.unquote_plus(pk)
+        else:
+            subdir = urllib.parse.unquote_plus(pk)
+
+        path = os.path.join(base_path, subdir)
+
+        if not os.path.isdir(path):
+            raise Http404()
+
+        file_name = subdir
+        file_ext = '.zip'
+        mime_type = 'application/zip'
+        disposition_file_name = '{file_name}{file_ext}'.format(
+            file_name=file_name,
+            file_ext=file_ext,
+        )
+
+        raise Exception('Not Implemented yet')
+        file_obj = open(path, 'rb')
+
+        response = FileResponse(streaming_content=file_obj, content_type=mime_type)
+        disposition_header = 'attachment; filename="{}"'.format(disposition_file_name)
+        response['Content-Disposition'] = disposition_header
+
+        return response
+
+
 class UploadView(generic.edit.FormView):
     initial = {
         # 'name': u'heinzel',