From b33ec08cbfa247cb8f136437ad0764a9339ea323 Mon Sep 17 00:00:00 2001
From: syuilo <4439005+syuilo@users.noreply.github.com>
Date: Sat, 25 Jul 2026 14:56:37 +0900
Subject: [PATCH] wip

---
 packages/frontend/src/preferences.ts         | 10 ++++++----
 packages/frontend/src/preferences/manager.ts |  6 +++++-
 packages/frontend/src/preferences/utility.ts | 10 ++++++++--
 3 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/packages/frontend/src/preferences.ts b/packages/frontend/src/preferences.ts
index 4f3e36e9ac..b32369aa11 100644
--- a/packages/frontend/src/preferences.ts
+++ b/packages/frontend/src/preferences.ts
@@ -123,10 +123,12 @@ createVisibilityAwareInterval(() => {
 }, 1000 * 60 * 3);
 //#endregion
 
-if (store.s.enablePreferencesAutoCloudSync) {
-	// TODO: 前回同期してから10分以上経過している場合のみ
-	cloudSync();
-}
+store.loaded.then(() => {
+	if (store.s.enablePreferencesAutoCloudSync) {
+		// TODO: 前回同期してから10分以上経過している場合のみ
+		cloudSync();
+	}
+});
 
 if (_DEV_) {
 	(window as any).prefer = prefer;
diff --git a/packages/frontend/src/preferences/manager.ts b/packages/frontend/src/preferences/manager.ts
index 363343d767..ffdc09f5c4 100644
--- a/packages/frontend/src/preferences/manager.ts
+++ b/packages/frontend/src/preferences/manager.ts
@@ -351,6 +351,8 @@ export class PreferencesManager extends EventEmitter<PreferencesManagerEvents> {
 
 		const cloudValues = await this.io.cloudGetBulk({ needs });
 
+		let modified = false;
+
 		for (const _key in PREF_DEF) {
 			const key = _key as keyof PREF;
 			const record = this.getMatchedRecordOf(key);
@@ -359,12 +361,14 @@ export class PreferencesManager extends EventEmitter<PreferencesManagerEvents> {
 				if (!deepEqual(cloudValue, record[1])) {
 					this.rewriteRawState(key, cloudValue);
 					record[1] = cloudValue;
+					modified = true;
 					if (_DEV_) console.log('cloud fetched', key, cloudValue);
 				}
 			}
 		}
 
-		this.save();
+		if (modified) this.save();
+
 		if (_DEV_) console.log('cloud fetch completed');
 	}
 
diff --git a/packages/frontend/src/preferences/utility.ts b/packages/frontend/src/preferences/utility.ts
index e712d46534..c62e0cf13d 100644
--- a/packages/frontend/src/preferences/utility.ts
+++ b/packages/frontend/src/preferences/utility.ts
@@ -162,11 +162,13 @@ export async function cloudSync() {
 		key: prefer.profile.name,
 	}) as PreferencesProfile | null;
 
-	if (cloudProfile == null || cloudProfile.modifiedAt < prefer.profile.modifiedAt) {
-		await cloudBackup();
+	if (cloudProfile == null || cloudProfile.modifiedAt <= prefer.profile.modifiedAt) {
+		if (_DEV_) console.log('no new cloud profile found, skipping sync');
 		return;
 	}
 
+	if (_DEV_) console.log('new cloud profile found, restoring from cloud', cloudProfile);
+
 	miLocalStorage.setItem('preferences', JSON.stringify(cloudProfile));
 
 	prefer.reloadProfile();
@@ -178,6 +180,10 @@ export async function cloudBackup() {
 		throw new Error('cannot auto backup for this profile');
 	}
 
+	// TODO: 同期有効時、既に新しいバージョンがバックアップされている場合は上書きしないようにする
+
+	if (_DEV_) console.log('cloud backup', prefer.profile);
+
 	await misskeyApi('i/registry/set', {
 		scope: ['client', 'preferences', 'backups'],
 		key: prefer.profile.name,