From 91de35ecdf94bb9ada06eb0c34a597bc50064681 Mon Sep 17 00:00:00 2001
From: syuilo <4439005+syuilo@users.noreply.github.com>
Date: Sat, 13 Jul 2024 10:30:28 +0900
Subject: [PATCH] =?UTF-8?q?fix(backend):=20=E3=83=87=E3=83=95=E3=82=A9?=
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Fix #13955
---
 CHANGELOG.md                                  |  1 +
 .../src/core/entities/MetaEntityService.ts    | 21 ++++++++++++++++---
 2 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 060ddd0e8..5533e3b51 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@
 - Feat: 通報を受けた際、または解決した際に、予め登録した宛先に通知を飛ばせるように(mail or webhook) #13705
 - Fix: 配信停止したインスタンス一覧が見れなくなる問題を修正
 - Fix: Dockerコンテナの立ち上げ時に`pnpm`のインストールで固まることがある問題
+- Fix: デフォルトテーマに無効なテーマコードを入力するとUIが使用できなくなる問題を修正
 
 ### Client
 - Enhance: 内蔵APIドキュメントのデザイン・パフォーマンスを改善
diff --git a/packages/backend/src/core/entities/MetaEntityService.ts b/packages/backend/src/core/entities/MetaEntityService.ts
index 5dfec589e..09641ce48 100644
--- a/packages/backend/src/core/entities/MetaEntityService.ts
+++ b/packages/backend/src/core/entities/MetaEntityService.ts
@@ -50,6 +50,22 @@ export class MetaEntityService {
 			}))
 			.getMany();
 
+		// クライアントの手間を減らすためあらかじめJSONに変換しておく
+		let defaultLightTheme = null;
+		let defaultDarkTheme = null;
+		if (instance.defaultLightTheme) {
+			try {
+				defaultLightTheme = JSON.stringify(JSON5.parse(instance.defaultLightTheme));
+			} catch (e) {
+			}
+		}
+		if (instance.defaultDarkTheme) {
+			try {
+				defaultDarkTheme = JSON.stringify(JSON5.parse(instance.defaultDarkTheme));
+			} catch (e) {
+			}
+		}
+
 		const packed: Packed<'MetaLite'> = {
 			maintainerName: instance.maintainerName,
 			maintainerEmail: instance.maintainerEmail,
@@ -90,9 +106,8 @@ export class MetaEntityService {
 			backgroundImageUrl: instance.backgroundImageUrl,
 			logoImageUrl: instance.logoImageUrl,
 			maxNoteTextLength: MAX_NOTE_TEXT_LENGTH,
-			// クライアントの手間を減らすためあらかじめJSONに変換しておく
-			defaultLightTheme: instance.defaultLightTheme ? JSON.stringify(JSON5.parse(instance.defaultLightTheme)) : null,
-			defaultDarkTheme: instance.defaultDarkTheme ? JSON.stringify(JSON5.parse(instance.defaultDarkTheme)) : null,
+			defaultLightTheme,
+			defaultDarkTheme,
 			ads: ads.map(ad => ({
 				id: ad.id,
 				url: ad.url,