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fluxer_app/src/components/channel/ChannelHeader/UpdaterIcon.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 {t} from '@lingui/core/macro';
+import {DownloadSimpleIcon} from '@phosphor-icons/react';
+import {observer} from 'mobx-react-lite';
+import React from 'react';
+import FocusRing from '~/components/uikit/FocusRing/FocusRing';
+import {Tooltip} from '~/components/uikit/Tooltip/Tooltip';
+import {Platform} from '~/lib/Platform';
+import UpdaterStore from '~/stores/UpdaterStore';
+import styles from '../ChannelHeader.module.css';
+
+export const UpdaterIcon = observer(() => {
+	const store = UpdaterStore;
+
+	const hasActionableNativeUpdate = Platform.isElectron && store.nativeUpdateReady;
+	const hasActionableWebUpdate = !!store.updateInfo.web.available && !hasActionableNativeUpdate;
+
+	const tooltip = React.useMemo(() => {
+		const version = store.displayVersion;
+
+		if (hasActionableNativeUpdate) {
+			return version ? t`Click to install update (${version})` : t`Click to install update`;
+		}
+
+		return version ? t`Click to reload and update (${version})` : t`Click to reload and update`;
+	}, [hasActionableNativeUpdate, store.displayVersion]);
+
+	const handleClick = React.useCallback(() => {
+		void store.applyUpdate();
+	}, [store]);
+
+	if (!hasActionableNativeUpdate && !hasActionableWebUpdate) {
+		return null;
+	}
+
+	return (
+		<Tooltip text={tooltip} position="bottom">
+			<FocusRing offset={-2}>
+				<button type="button" className={styles.updateIconButton} onClick={handleClick} aria-label={tooltip}>
+					<DownloadSimpleIcon weight="bold" className={styles.updateIcon} />
+				</button>
+			</FocusRing>
+		</Tooltip>
+	);
+});