fix(frontend): 標準テーマと同じIDを使用してインストールできてしまう問題を修正

Fix #12188

1 files changed, 5 insertions, 1 deletions

diff --git a/packages/frontend/src/theme-store.ts b/packages/frontend/src/theme-store.ts
index 9cae68d5d3..f37c01cca1 100644
--- a/packages/frontend/src/theme-store.ts
+++ b/packages/frontend/src/theme-store.ts
@@ -3,7 +3,7 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Theme } from '@/scripts/theme.js';
+import { Theme, getBuiltinThemes } from '@/scripts/theme.js';
 import { miLocalStorage } from '@/local-storage.js';
 import { api } from '@/os.js';
 import { $i } from '@/account.js';
@@ -29,6 +29,10 @@ export async function fetchThemes(): Promise<void> {
 
 export async function addTheme(theme: Theme): Promise<void> {
 	if ($i == null) return;
+	const builtinThemes = await getBuiltinThemes();
+	if (builtinThemes.some(t => t.id === theme.id)) {
+		throw new Error('builtin theme');
+	}
 	await fetchThemes();
 	const themes = getThemes().concat(theme);
 	await api('i/registry/set', { scope: ['client'], key: 'themes', value: themes });