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fluxer_app/src/stores/DraftStore.tsx

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+/*
+ * 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 {action, makeAutoObservable} from 'mobx';
+import {makePersistent} from '~/lib/MobXPersistence';
+
+class DraftStore {
+	drafts: Record<string, string> = {};
+
+	constructor() {
+		makeAutoObservable(this, {}, {autoBind: true});
+		void this.initPersistence();
+	}
+
+	private async initPersistence(): Promise<void> {
+		await makePersistent(this, 'DraftStore', ['drafts']);
+	}
+
+	@action
+	createDraft(channelId: string, content: string): void {
+		if (!content || content === this.drafts[channelId]) {
+			return;
+		}
+
+		this.drafts = {
+			...this.drafts,
+			[channelId]: content,
+		};
+	}
+
+	@action
+	deleteDraft(channelId: string): void {
+		if (!this.drafts[channelId]) {
+			return;
+		}
+
+		const {[channelId]: _, ...remainingDrafts} = this.drafts;
+		this.drafts = remainingDrafts;
+	}
+
+	@action
+	deleteChannelDraft(channelId: string): void {
+		this.deleteDraft(channelId);
+	}
+
+	getDraft(channelId: string): string {
+		return this.drafts[channelId] ?? '';
+	}
+
+	@action
+	cleanupEmptyDrafts(): void {
+		this.drafts = Object.fromEntries(Object.entries(this.drafts).filter(([_, content]) => content.trim().length > 0));
+	}
+
+	getAllDrafts(): ReadonlyArray<[string, string]> {
+		return Object.entries(this.drafts);
+	}
+
+	hasDraft(channelId: string): boolean {
+		return channelId in this.drafts;
+	}
+
+	getDraftCount(): number {
+		return Object.keys(this.drafts).length;
+	}
+}
+
+export default new DraftStore();