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/*
	GoToSocial
	Copyright (C) GoToSocial Authors admin@gotosocial.org
	SPDX-License-Identifier: AGPL-3.0-or-later

	This program 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.

	This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
*/

const React = require("react");

module.exports = function CheckList({ field, header = "All", EntryComponent, getExtraProps }) {
	return (
		<div className="checkbox-list list">
			<CheckListHeader toggleAll={field.toggleAll}>	{header}</CheckListHeader>
			<CheckListEntries
				entries={field.value}
				updateValue={field.onChange}
				EntryComponent={EntryComponent}
				getExtraProps={getExtraProps}
			/>
		</div>
	);
};

function CheckListHeader({ toggleAll, children }) {
	return (
		<label className="header entry">
			<input
				ref={toggleAll.ref}
				type="checkbox"
				onChange={toggleAll.onChange}
			/> {children}
		</label>
	);
}

const CheckListEntries = React.memo(
	function CheckListEntries({ entries, updateValue, EntryComponent, getExtraProps }) {
		const deferredEntries = React.useDeferredValue(entries);

		return Object.values(deferredEntries).map((entry) => (
			<CheckListEntry
				key={entry.key}
				entry={entry}
				updateValue={updateValue}
				EntryComponent={EntryComponent}
				getExtraProps={getExtraProps}
			/>
		));
	}
);

/*
	React.memo is a performance optimization that only re-renders a CheckListEntry
	when it's props actually change, instead of every time anything
	in the list (CheckListEntries) updates
*/
const CheckListEntry = React.memo(
	function CheckListEntry({ entry, updateValue, getExtraProps, EntryComponent }) {
		const onChange = React.useCallback(
			(value) => updateValue(entry.key, value),
			[updateValue, entry.key]
		);

		const extraProps = React.useMemo(() => getExtraProps?.(entry), [getExtraProps, entry]);

		return (
			<label className="entry">
				<input
					type="checkbox"
					onChange={(e) => onChange({ checked: e.target.checked })}
					checked={entry.checked}
				/>
				<EntryComponent entry={entry} onChange={onChange} extraProps={extraProps} />
			</label>
		);
	}
);