fix: generate random md5 hash if None on image

src/input_handling.py

@@ -25,6 +25,14 @@ both the UI elements (setup_input_UI) and the validation functions.
 #allowed_image_types = ['webp']
 allowed_image_types = ['jpg', 'jpeg', 'png', 'webp']
 
+import random
+import string
+def generate_random_md5():
+    # Generate a random string
+    random_string = ''.join(random.choices(string.ascii_letters + string.digits, k=16))
+    # Encode the string and compute its MD5 hash
+    md5_hash = hashlib.md5(random_string.encode()).hexdigest()
+    return md5_hash
 
 # autogenerated class to hold the input data
 class InputObservation:
@@ -101,7 +109,7 @@ class InputObservation:
         return {
             #"image": self.image,
             "image_filename": self.uploaded_filename.name if self.uploaded_filename else None,
-            "image_md5": hashlib.md5(self.uploaded_filename.read()).hexdigest() if self.uploaded_filename else None,
+            "image_md5": hashlib.md5(self.uploaded_filename.read()).hexdigest() if self.uploaded_filename else generate_random_md5(),
             "latitude": self.latitude,
             "longitude": self.longitude,
             "author_email": self.author_email,