refactor: DriveFileEntityServiceとDriveFolderEntityServiceの複数件取得をリファクタ (#17064)

* refactor: DriveFileEntityServiceとDriveFolderEntityServiceの複数件取得をリファクタ

* add test

* fix

* Update packages/backend/src/core/entities/DriveFolderEntityService.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update packages/backend/test/unit/entities/DriveFolderEntityService.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update packages/backend/src/core/entities/DriveFileEntityService.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Revert "Update packages/backend/src/core/entities/DriveFileEntityService.ts"

This reverts commit 83bb9564cfdb699a21b775815439e1e496cd89a9.

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/packages/backend/src/misc/split-id-and-objects.ts b/packages/backend/src/misc/split-id-and-objects.ts
new file mode 100644
index 0000000000..d23bb93695
--- /dev/null
+++ b/packages/backend/src/misc/split-id-and-objects.ts
@@ -0,0 +1,27 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+/**
+ * idとオブジェクトを分離する
+ * @param input idまたはオブジェクトの配列
+ * @returns idの配列とオブジェクトの配列
+ */
+export function splitIdAndObjects<T extends { id: string }>(input: (T | string)[]): { ids: string[]; objects: T[] } {
+	const ids: string[] = [];
+	const objects : T[] = [];
+
+	for (const item of input) {
+		if (typeof item === 'string') {
+			ids.push(item);
+		} else {
+			objects.push(item);
+		}
+	}
+
+	return {
+		ids,
+		objects,
+	};
+}