Add DELETE /family/{id}/user/{user_id} route

geneit_backend/src/controllers/families_controller.rs

@@ -169,3 +169,25 @@ pub async fn update_membership(
 
     Ok(HttpResponse::Accepted().finish())
 }
+
+/// Delete a family membership
+pub async fn delete_membership(
+    f: FamilyInPathWithAdminMembership,
+    path: web::Path<UserIdInPath>,
+) -> HttpResult {
+    // An admin can not remove his own membership
+    if path.user_id == f.user_id() {
+        return Ok(HttpResponse::Conflict().body("You cannot remove your own membership!"));
+    }
+
+    families_service::remove_membership(f.family_id(), path.user_id).await?;
+
+    log::info!(
+        "User {:?} removed the membership of user {:?} in the family {:?}",
+        f.user_id(),
+        path.user_id,
+        f.family_id()
+    );
+
+    Ok(HttpResponse::Accepted().finish())
+}