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fluxer_app/src/stores/StatusExpiryStore.ts

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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 {makeAutoObservable, reaction} from 'mobx';
+import * as UserSettingsActionCreators from '~/actions/UserSettingsActionCreators';
+import {type StatusType, StatusTypes} from '~/Constants';
+import AccountManager from '~/stores/AccountManager';
+import UserSettingsStore from '~/stores/UserSettingsStore';
+
+class StatusExpiryStore {
+	activeUserId: string | null = null;
+	private timer: ReturnType<typeof setTimeout> | null = null;
+
+	constructor() {
+		makeAutoObservable(this);
+
+		reaction(
+			() => AccountManager.currentUserId,
+			(userId) => {
+				this.handleActiveUserChange(userId);
+			},
+			{fireImmediately: true},
+		);
+
+		reaction(
+			() => ({
+				statusResetsAt: UserSettingsStore.statusResetsAt,
+				statusResetsTo: UserSettingsStore.statusResetsTo,
+				status: UserSettingsStore.status,
+			}),
+			() => {
+				this.scheduleTimer();
+			},
+		);
+	}
+
+	get activeExpiresAt(): number | null {
+		const resetsAt = UserSettingsStore.statusResetsAt;
+		if (!resetsAt) {
+			return null;
+		}
+		return new Date(resetsAt).getTime();
+	}
+
+	get activeFallbackStatus(): StatusType {
+		const resetsTo = UserSettingsStore.statusResetsTo;
+		if (!resetsTo) {
+			return StatusTypes.ONLINE;
+		}
+		switch (resetsTo) {
+			case 'online':
+				return StatusTypes.ONLINE;
+			case 'idle':
+				return StatusTypes.IDLE;
+			case 'dnd':
+				return StatusTypes.DND;
+			case 'invisible':
+				return StatusTypes.INVISIBLE;
+			default:
+				return StatusTypes.ONLINE;
+		}
+	}
+
+	setActiveStatusExpiry({
+		status,
+		durationMs,
+		fallbackStatus = StatusTypes.ONLINE,
+	}: {
+		status: StatusType;
+		durationMs: number | null;
+		fallbackStatus?: StatusType;
+	}): void {
+		if (durationMs === null) {
+			this.clearStatusExpiry();
+			UserSettingsActionCreators.update({
+				status,
+				statusResetsAt: null,
+				statusResetsTo: null,
+			}).catch((error) => {
+				console.error('Failed to update status:', error);
+			});
+			return;
+		}
+
+		const expiresAt = new Date(Date.now() + durationMs);
+
+		UserSettingsActionCreators.update({
+			status,
+			statusResetsAt: expiresAt.toISOString(),
+			statusResetsTo: fallbackStatus,
+		}).catch((error) => {
+			console.error('Failed to update status with expiry:', error);
+		});
+	}
+
+	clearStatusExpiry(): void {
+		if (this.timer) {
+			clearTimeout(this.timer);
+			this.timer = null;
+		}
+	}
+
+	handleActiveUserChange(userId: string | null): void {
+		this.activeUserId = userId;
+		this.scheduleTimer();
+	}
+
+	private scheduleTimer(): void {
+		if (this.timer) {
+			clearTimeout(this.timer);
+			this.timer = null;
+		}
+
+		const expiresAt = this.activeExpiresAt;
+		if (!expiresAt) {
+			return;
+		}
+
+		const delay = expiresAt - Date.now();
+		if (delay <= 0) {
+			void this.handleExpiry();
+			return;
+		}
+
+		this.timer = setTimeout(() => {
+			void this.handleExpiry();
+		}, delay);
+	}
+
+	private async handleExpiry(): Promise<void> {
+		const fallbackStatus = this.activeFallbackStatus;
+
+		try {
+			await UserSettingsActionCreators.update({
+				status: fallbackStatus,
+				statusResetsAt: null,
+				statusResetsTo: null,
+			});
+		} catch (error) {
+			console.error('Failed to revert status after expiry:', error);
+		}
+	}
+}
+
+export default new StatusExpiryStore();