refactor progress

fluxer_app/src/stores/GuildFolderExpandedStore.tsx

@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import {makePersistent} from '@app/lib/MobXPersistence';
+import {makeAutoObservable} from 'mobx';
+
+class GuildFolderExpandedStore {
+	expandedFolderIds: Array<number> = [];
+
+	constructor() {
+		makeAutoObservable(this, {}, {autoBind: true});
+		void this.initPersistence();
+	}
+
+	private async initPersistence(): Promise<void> {
+		await makePersistent(this, 'GuildFolderExpandedStore', ['expandedFolderIds']);
+	}
+
+	isExpanded(folderId: number): boolean {
+		return this.expandedFolderIds.includes(folderId);
+	}
+
+	toggleExpanded(folderId: number): void {
+		if (this.expandedFolderIds.includes(folderId)) {
+			const index = this.expandedFolderIds.indexOf(folderId);
+			if (index > -1) {
+				this.expandedFolderIds.splice(index, 1);
+			}
+		} else {
+			this.expandedFolderIds.push(folderId);
+		}
+	}
+}
+
+export default new GuildFolderExpandedStore();