[FEATURE]: Adding Functionality To Update Users (#5615)

# Description
Argilla offers the ability to create and delete users but not the
ability to update a User object after it has been created. For example,
if we want to update the Role of a user after they have been created
(from annotator to admin for example), this is not possible without
deleting and recreating the User.

This PR adds an update endpoint to the FastAPI server and also the
convenience of doing this through the python sdk also
Closes #<issue_number>

**Type of change**
<!-- Please delete options that are not relevant. Remember to title the
PR according to the type of change -->

- New feature (non-breaking change which adds functionality)
- Improvement (change adding some improvement to an existing
functionality)

**How Has This Been Tested**
Tests have been added at both the server and SDK level to ensure that
the update method is working as expected

**Checklist**
<!-- Please go over the list and make sure you've taken everything into
account -->

- I added relevant documentation
- I followed the style guidelines of this project
- I did a self-review of my code
- I made corresponding changes to the documentation
- I confirm My changes generate no new warnings
- I have added tests that prove my fix is effective or that my feature
works
- I have added relevant notes to the CHANGELOG.md file (See
https://keepachangelog.com/)

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Paco Aranda <[email protected]>
Co-authored-by: Paco Aranda <[email protected]>
Co-authored-by: Francisco Aranda <[email protected]>
Co-authored-by: José Francisco Calvo <[email protected]>

argilla-server/CHANGELOG.md

@@ -29,6 +29,7 @@ These are the section headers that we use:
 
 ### Changed
 
+- API endpoint added to the User router to allow updates to User objects ([#5615](https://github.com/argilla-io/argilla/pull/5615))
 - Changed default python version to 3.13. ([#5649](https://github.com/argilla-io/argilla/pull/5649))
 - Changed Pydantic version to v2. ([#5666](https://github.com/argilla-io/argilla/pull/5666))
 

argilla-server/src/argilla_server/api/handlers/v1/users.py

@@ -19,7 +19,7 @@
 
 from argilla_server.api.policies.v1 import UserPolicy, authorize
 from argilla_server.api.schemas.v1.users import User as UserSchema
-from argilla_server.api.schemas.v1.users import UserCreate, Users
+from argilla_server.api.schemas.v1.users import UserCreate, Users, UserUpdate
 from argilla_server.api.schemas.v1.workspaces import Workspaces
 from argilla_server.contexts import accounts
 from argilla_server.database import get_async_db
@@ -89,6 +89,21 @@ async def delete_user(
     return await accounts.delete_user(db, user)
 
 
+@router.patch("/users/{user_id}", status_code=status.HTTP_200_OK, response_model=UserSchema)
+async def update_user(
+    *,
+    db: AsyncSession = Depends(get_async_db),
+    user_id: UUID,
+    user_update: UserUpdate,
+    current_user: User = Security(auth.get_current_user),
+):
+    user = await User.get_or_raise(db, user_id)
+
+    await authorize(current_user, UserPolicy.update)
+
+    return await accounts.update_user(db, user, user_update.model_dump(exclude_unset=True))
+
+
 @router.get("/users/{user_id}/workspaces", response_model=Workspaces)
 async def list_user_workspaces(
     *,

argilla-server/src/argilla_server/api/policies/v1/user_policy.py

@@ -28,6 +28,10 @@ async def list(cls, actor: User) -> bool:
     async def create(cls, actor: User) -> bool:
         return actor.is_owner
 
+    @classmethod
+    async def update(cls, actor: User) -> bool:
+        return actor.is_owner
+
     @classmethod
     async def delete(cls, actor: User) -> bool:
         return actor.is_owner

argilla-server/src/argilla_server/api/schemas/v1/users.py

@@ -13,16 +13,35 @@
 #  limitations under the License.
 
 from datetime import datetime
-from typing import List, Optional
+from typing import Annotated, List, Optional
 from uuid import UUID
 
 from pydantic import BaseModel, Field, constr, ConfigDict
 
+from argilla_server.api.schemas.v1.commons import UpdateSchema
 from argilla_server.enums import UserRole
 
 USER_PASSWORD_MIN_LENGTH = 8
 USER_PASSWORD_MAX_LENGTH = 100
 
+UserFirstName = Annotated[
+    constr(min_length=1, strip_whitespace=True), Field(..., description="The first name for the user")
+]
+UserLastName = Annotated[
+    constr(min_length=1, strip_whitespace=True), Field(..., description="The last name for the user")
+]
+UserUsername = Annotated[str, Field(..., min_length=1, description="The username for the user")]
+
+UserPassword = Annotated[
+    str,
+    Field(
+        ...,
+        min_length=USER_PASSWORD_MIN_LENGTH,
+        max_length=USER_PASSWORD_MAX_LENGTH,
+        description="The password for the user",
+    ),
+]
+
 
 class User(BaseModel):
     id: UUID
@@ -40,11 +59,21 @@ class User(BaseModel):
 
 
 class UserCreate(BaseModel):
-    username: str = Field(..., min_length=1)
-    password: str = Field(min_length=USER_PASSWORD_MIN_LENGTH, max_length=USER_PASSWORD_MAX_LENGTH)
-    first_name: constr(min_length=1, strip_whitespace=True)
-    last_name: Optional[constr(min_length=1, strip_whitespace=True)] = None
+    first_name: UserFirstName
+    last_name: Optional[UserLastName] = None
+    username: UserUsername
+    role: Optional[UserRole] = None
+    password: UserPassword
+
+
+class UserUpdate(UpdateSchema):
+    __non_nullable_fields__ = {"first_name", "username", "role", "password"}
+
+    first_name: Optional[UserFirstName] = None
+    last_name: Optional[UserLastName] = None
+    username: Optional[UserUsername] = None
     role: Optional[UserRole] = None
+    password: Optional[UserPassword] = None
 
 
 class Users(BaseModel):

argilla-server/src/argilla_server/contexts/accounts.py

@@ -154,6 +154,18 @@ async def create_user_with_random_password(
     return await create_user(db, user_attrs, workspaces)
 
 
+async def update_user(db: AsyncSession, user: User, user_attrs: dict) -> User:
+    username = user_attrs.get("username")
+    if username is not None and username != user.username:
+        if await get_user_by_username(db, username):
+            raise UnprocessableEntityError(f"Username {username!r} already exists")
+
+    if "password" in user_attrs:
+        user_attrs["password_hash"] = hash_password(user_attrs.pop("password"))
+
+    return await user.update(db, **user_attrs)
+
+
 async def delete_user(db: AsyncSession, user: User) -> User:
     return await user.delete(db)