Add Uploadview and get_progress

app/views.py

@@ -153,6 +153,66 @@ class ConfigurationPageView(TemplateView):
         return HttpResponsePermanentRedirect(reverse('admin:index'))
 
 
+class UploadView(TemplateView):
+    template_name = "app/admin/config.html"
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        return context
+
+    def get(self, request):
+        messages.add_message(request, messages.ERROR, 'Please select a valid file')
+        return HttpResponsePermanentRedirect(reverse('app:config'))
+
+    def post(self, request, **kwargs):
+        if 'datafile' in request.FILES:
+            fs = request.FILES['datafile']
+            fs_name = secure_filename(fs.name)
+            fs_path = default_storage.save(fs_name, ContentFile(fs.read()))
+            print('Uploading: %s' % fs_path)
+
+            # Validation
+            fmt = None
+            if fs_name.endswith('.csv'):
+                with open(fs_path, 'rt', encoding='utf-8', errors='ignore') as csvfile:
+                    datareader = csv.DictReader(csvfile)
+                    datalist = list(datareader)
+                    fmt = detect_dataformat(datalist[0])
+
+            elif fs_name.endswith('.geojson'):
+                with open(fs_path, 'rt', encoding='utf-8', errors='ignore') as jsonfile:
+                    jsondata = json.load(jsonfile)
+                    fmt = detect_dataformat(jsondata['features'][0]['properties'])
+
+            # Loading
+            if fmt is not None:
+                fs_target = get_datafile(fmt)
+                move(fs_path, fs_target)
+                messages.add_message(request, message="Uploaded new data file %s" % fmt['filename'],
+                                     level=messages.SUCCESS)
+            else:
+                messages.add_message(request, message="Could not validate data format!", level=messages.ERROR)
+        else:
+            messages.add_message(request, message="Please select a valid file", level=messages.ERROR)
+        return HttpResponsePermanentRedirect(reverse('config'))
+
+
+def get_progress(request):
+    global c_progress
+    global c_filename
+
+    def generate():
+        while 1:
+            p = str(100*c_progress)
+            yield 'data: { "p":'+p+',"f":"'+c_filename+'"}\n\n'
+            time.sleep(1.0)
+    if c_filename == "":
+        return HttpResponse("{}", content_type='text/event-stream')
+    response = HttpResponse(generate(), content_type='text/event-stream')
+    response['X-Accel-Buffering'] = 'no'
+    return response
+
+
 def send_from_file(request, filename):
     request_for = ''
     if request.path.startswith('/geodata'):