Support uploading of images from event creation

webapp/utils.py

@@ -9,7 +9,42 @@ from datetime import timedelta
 import logging
 from django.conf import settings
 from django.template.loader import render_to_string
+from django.core.files.base import ContentFile
+import base64
+import uuid
 from sikweb.settings import FRONTEND_URL, URL, EMAIL_API_KEY, EMAIL_API_SECRET, DEFAULT_EMAIL_FROM, DEFAULT_EMAIL_FROM_ADDR, ENABLE_AUTOMATIC_EMAILS
+import imghdr
+
+
+def get_file_extension(file_name, decoded_file):
+    extension = imghdr.what(file_name, decoded_file)
+    extension = "jpg" if extension == "jpeg" else extension
+    return extension
+
+
+def decode_base64_file(data):
+    # Check if this is a base64 string
+    if isinstance(data, str):
+        # Check if the base64 string is in the "data:" format
+        if 'data:' in data and ';base64,' in data:
+            # Break out the header from the base64 content
+            header, data = data.split(';base64,')
+
+        # Try to decode the file. Return validation error if it fails.
+        try:
+            decoded_file = base64.b64decode(data)
+        except TypeError:
+            TypeError('invalid_image')
+
+        # Generate file name:
+        file_name = str(uuid.uuid4())
+
+        # Get the file name extension:
+        file_extension = get_file_extension(file_name, decoded_file)
+
+        complete_file_name = "%s.%s" % (file_name, file_extension, )
+
+        return ContentFile(decoded_file, name=complete_file_name)
 
 
 def month_from_now():