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fluxer_app/src/components/channel/ChannelHeader/ChannelPinsButton.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 {useLingui} from '@lingui/react/macro';
+import {PushPinIcon} from '@phosphor-icons/react';
+import {observer} from 'mobx-react-lite';
+import React from 'react';
+import {ChannelPinsBottomSheet} from '~/components/bottomsheets/ChannelPinsBottomSheet';
+import {ChannelPinsPopout} from '~/components/popouts/ChannelPinsPopout';
+import {Popout} from '~/components/uikit/Popout/Popout';
+import {usePopout} from '~/hooks/usePopout';
+import type {ChannelRecord} from '~/records/ChannelRecord';
+import MobileLayoutStore from '~/stores/MobileLayoutStore';
+import ReadStateStore from '~/stores/ReadStateStore';
+import styles from '../ChannelHeader.module.css';
+import {ChannelHeaderIcon} from './ChannelHeaderIcon';
+
+export const ChannelPinsButton = observer(({channel}: {channel: ChannelRecord}) => {
+	const {t} = useLingui();
+	const {isOpen, openProps} = usePopout('channel-pins');
+	const isMobile = MobileLayoutStore.isMobileLayout();
+	const [isBottomSheetOpen, setIsBottomSheetOpen] = React.useState(false);
+	const hasUnreadPins = ReadStateStore.hasUnreadPins(channel.id);
+
+	const handleClick = React.useCallback(() => {
+		if (isMobile) {
+			setIsBottomSheetOpen(true);
+		}
+	}, [isMobile]);
+
+	const indicator = hasUnreadPins ? <div className={styles.unreadPinIndicator} /> : null;
+
+	if (isMobile) {
+		return (
+			<>
+				<div className={styles.iconButtonWrapper}>
+					<ChannelHeaderIcon
+						icon={PushPinIcon}
+						label={t`Pinned Messages`}
+						isSelected={isBottomSheetOpen}
+						onClick={handleClick}
+						keybindAction="toggle_pins_popout"
+					/>
+					{indicator}
+				</div>
+				<ChannelPinsBottomSheet
+					isOpen={isBottomSheetOpen}
+					onClose={() => setIsBottomSheetOpen(false)}
+					channel={channel}
+				/>
+			</>
+		);
+	}
+
+	return (
+		<Popout
+			{...openProps}
+			render={() => <ChannelPinsPopout channel={channel} />}
+			position="bottom-end"
+			subscribeTo="CHANNEL_PINS_OPEN"
+		>
+			<div className={styles.iconButtonWrapper}>
+				<ChannelHeaderIcon
+					icon={PushPinIcon}
+					label={t`Pinned Messages`}
+					isSelected={isOpen}
+					keybindAction="toggle_pins_popout"
+				/>
+				{indicator}
+			</div>
+		</Popout>
+	);
+});