fix: adds uploader to dataset/asset

A contributor added with the role of "Uploader" is also added to the
dataset and asset as the "uploader".

packages/syft/src/syft/service/dataset/dataset.py

@@ -21,6 +21,7 @@
 from result import Err
 from result import Ok
 from result import Result
+from syft.service.user.roles import Roles
 
 # relative
 from ...serde.serializable import serializable
@@ -154,11 +155,7 @@ def _repr_html_(self) -> Any:
         # relative
         from ...service.action.action_object import ActionObject
 
-        uploaded_by_line = "n/a"
-        if len(self.contributors) > 0:
-            uploaded_by_line = (
-                f"<p><strong>Uploaded by: </strong>{self.uploader.name}</p>"
-            )
+        uploaded_by_line = f"<p><strong>Uploaded by: </strong>{self.uploader.name} ({self.uploader.email})</p>" if self.uploader else ""
         if isinstance(self.data, ActionObject):
             data_table_line = itables.to_html_datatable(
                 df=self.data.syft_action_data, css=itables_css
@@ -336,6 +333,8 @@ def add_contributor(
                 name=name, role=_role_str, email=email, phone=phone, note=note
             )
             self.contributors.append(contributor)
+            if _role_str == Roles.UPLOADER.value:
+                self.uploader = contributor
             return SyftSuccess(
                 message=f"Contributor '{name}' added to '{self.name}' Asset."
             )
@@ -451,12 +450,11 @@ def _coll_repr_(self) -> Dict[str, Any]:
         }
 
     def _repr_html_(self) -> Any:
-        uploaded_by_line = "n/a"
-        if len(self.contributors) > 0:
-            uploaded_by_line = (
+        uploaded_by_line = (
                 "<p class='paragraph-sm'><strong>"
-                + f"<span class='pr-8'>Uploaded by:</span></strong>{self.uploader.name}</p>"
-            )
+                + f"<span class='pr-8'>Uploaded by:</span></strong>{self.uploader.name} ({self.uploader.email})</p>"
+            ) if self.uploader else ""
+
         return f"""
             <style>
             {fonts_css}
@@ -620,6 +618,8 @@ def add_contributor(
                 name=name, role=_role_str, email=email, phone=phone, note=note
             )
             self.contributors.append(contributor)
+            if _role_str == Roles.UPLOADER.value:
+                self.uploader = contributor
             return SyftSuccess(
                 message=f"Contributor '{name}' added to '{self.name}' Dataset."
             )