graphql: Add methods to add/remove group memberships

server/src/infra/graphql/mutation.rs

@@ -1,4 +1,4 @@
-use crate::domain::handler::{BackendHandler, CreateUserRequest, UpdateUserRequest};
+use crate::domain::handler::{BackendHandler, CreateUserRequest, GroupId, UpdateUserRequest};
 use juniper::{graphql_object, FieldResult, GraphQLInputObject, GraphQLObject};
 
 use super::api::Context;
@@ -93,4 +93,34 @@ impl<Handler: BackendHandler + Sync> Mutation<Handler> {
             .await?;
         Ok(Success::new())
     }
+
+    async fn add_user_to_group(
+        context: &Context<Handler>,
+        user_id: String,
+        group_id: i32,
+    ) -> FieldResult<Success> {
+        if !context.validation_result.is_admin {
+            return Err("Unauthorized group membership modification".into());
+        }
+        context
+            .handler
+            .add_user_to_group(&user_id, GroupId(group_id))
+            .await?;
+        Ok(Success::new())
+    }
+
+    async fn remove_user_from_group(
+        context: &Context<Handler>,
+        user_id: String,
+        group_id: i32,
+    ) -> FieldResult<Success> {
+        if !context.validation_result.is_admin {
+            return Err("Unauthorized group membership modification".into());
+        }
+        context
+            .handler
+            .remove_user_from_group(&user_id, GroupId(group_id))
+            .await?;
+        Ok(Success::new())
+    }
 }

server/src/infra/tcp_backend_handler.rs

@@ -35,6 +35,7 @@ mockall::mock! {
         async fn delete_user(&self, user_id: &str) -> DomainResult<()>;
         async fn create_group(&self, group_name: &str) -> DomainResult<GroupId>;
         async fn add_user_to_group(&self, user_id: &str, group_id: GroupId) -> DomainResult<()>;
+        async fn remove_user_from_group(&self, user_id: &str, group_id: GroupId) -> DomainResult<()>;
     }
     #[async_trait]
     impl TcpBackendHandler for TestTcpBackendHandler {