create permission modification endpoints

api/src/Controllers/UsersController.cs

@@ -66,6 +66,54 @@ public class UsersController : ControllerBase {
         return NoContent();
     }
 
+    [Authorize(Policy = Permission.SensitiveData_Modify)]
+    [HttpDelete("{id}/permission")]
+    public async Task<ActionResult> removePermission(string id, string permission) {
+
+        var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
+        if(userId == id) return BadRequest(); // dont allow permission removal of yourself
+
+        // get list of permissions of that user
+        var user = await service_.GetById(id);
+        if (user == null) return NotFound();
+        if(user.Permissions == null) return NotFound();
+
+        // verify that the requested permission exists on that user
+        if(!user.Permissions.Contains(permission)) return NotFound();
+
+        // remove the permission from the permission list
+        user.Permissions.Remove(permission);
+
+        // update the user
+        await service_.Update(id, user);
+
+        return NoContent();
+    }
+
+    [Authorize(Policy = Permission.SensitiveData_Modify)]
+    [HttpPost("{id}/{permission}")] // TODO: this was made with a single button per permission in mind, but may be better as sending an array 
+    public async Task<ActionResult> addPermission(string id, string permission) {
+
+        // we'll allow the superuser to elevate their own permissions because they're the superuser
+
+        // get list of permissions of the user
+        var user = await service_.GetById(id);
+        if (user == null) return NotFound();
+        if(user.Permissions == null) return NotFound();
+
+        // remove add the permission to the user's permission list (if it doesnt already exist)
+        if(user.Permissions.Contains(permission)) return NoContent();
+        user.Permissions.Add(permission);
+
+        // update the user
+        await service_.Update(id, user);
+
+        return NoContent();
+
+        // fyi the user will need to sign out and sign back in so the new permissions are reflected in their jwt claims
+        // TODO: or on the client i could issue a refresh token request after a permission api call
+    }
+
     // TODO: add controls on editing roles 
 
 }