/* Copyright (c) 2015-present, salesforce.com, inc. All rights reserved */
/* Licensed under BSD 3-Clause - see LICENSE.txt or git.io/sfdc-license */

// # Global Header Favorites Component
// Implements the [Global Header Help design pattern](https://www.lightningdesignsystem.com/components/global-header/#Help) in React.

import React from 'react';
import PropTypes from 'prop-types';
import assign from 'lodash.assign';
import classnames from 'classnames';

import Button from '../button';
import EventUtil from '../../utilities/event';
import KEYS from '../../utilities/key-code';
import Popover from '../popover';

import { GLOBAL_HEADER_FAVORITES } from '../../utilities/constants';

const propTypes = {
	/**
	 * **Assistive text for accessibility**
	 * * `action`: Description of star button. Default is "Toggle Favorite."
	 * * `more`: Description of dropdown menu. Default is "View Favorites."
	 */
	assistiveText: PropTypes.shape({
		action: PropTypes.string,
		more: PropTypes.string,
	}),
	/**
	 * Disables the favorites action (star) button and not the related Popover."
	 */
	actionDisabled: PropTypes.bool,
	/**
	 * Controls whether the favorites action (star) button is selected or not
	 */
	actionSelected: PropTypes.bool,
	/**
	 * This event fires when the favorites action (star) button is toggled. Passes in `event, { actionSelected }`.
	 */
	onToggleActionSelected: PropTypes.func,
	/**
	 * A `Popover` component applied to the favorites more button. The props from this popover will be merged and override any default props. The `children` prop will be ignored.
	 */
	popover: PropTypes.node,
};

/**
 * A GlobalHeaderFavorites component. The favorites action is used to "favorite" a commonly used page within a user's experience. When a user "favorites" a page by pressing the favorites action, the button icon changes color with a small animation to confirm your selection.
 */
class GlobalHeaderFavorites extends React.Component {
	toggleActionSelected = (event) => {
		if (this.props.onToggleActionSelected) {
			this.props.onToggleActionSelected(event, {
				actionSelected: this.props.actionSelected || false,
			});
		}
	};

	render() {
		const actionAriaProps = {};
		const popoverProps = assign(
			{
				align: 'bottom',
				body: <span />,
				triggerClassName: 'slds-dropdown-trigger slds-dropdown-trigger_click',
			},
			this.props.popover ? this.props.popover.props : {}
		);

		// eslint-disable-next-line fp/no-delete
		delete popoverProps.children;

		if (this.props.actionSelected) {
			actionAriaProps['aria-pressed'] = true;
		}

		return (
			<div className="slds-global-actions__favorites slds-dropdown-trigger slds-dropdown-trigger_click">
				<div className="slds-button-group">
					<Button
						assistiveText={{ icon: this.props.assistiveText.action }}
						className={classnames(
							'slds-button_icon slds-global-actions__favorites-action',
							{
								'slds-is-disabled': this.props.actionDisabled,
								'slds-is-selected': this.props.actionSelected,
							}
						)}
						disabled={this.props.actionDisabled}
						iconCategory="utility"
						iconName="favorite"
						iconSize="small"
						iconVariant="border"
						onClick={this.toggleActionSelected}
						onKeyDown={(event) => {
							if (event.keyCode === KEYS.ENTER) {
								EventUtil.trapImmediate(event);
								this.toggleActionSelected(event);
							}
						}}
						title={this.props.assistiveText.action}
						variant="icon"
						{...actionAriaProps}
					/>
					<Popover {...popoverProps}>
						<Button
							assistiveText={{ icon: this.props.assistiveText.more }}
							className="slds-button_icon slds-global-actions__favorites-more"
							iconCategory="utility"
							iconName="down"
							iconSize="small"
							iconVariant="border"
							style={{
								// this is needed because the popover trigger wrapper janks up the default styles
								borderLeft: '0',
								borderRadius: '0 .25rem .25rem 0',
							}}
							title={this.props.assistiveText.more}
							variant="icon"
						/>
					</Popover>
				</div>
			</div>
		);
	}
}

GlobalHeaderFavorites.displayName = GLOBAL_HEADER_FAVORITES;

GlobalHeaderFavorites.defaultProps = {
	assistiveText: {
		action: 'Toggle Favorite',
		more: 'View Favorites',
	},
};

GlobalHeaderFavorites.propTypes = propTypes;

export default GlobalHeaderFavorites;