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

/* eslint-disable jsx-a11y/no-redundant-roles */

// # Breadcrumbs

// Implements the [Breadcrumbs design pattern](https://www.lightningdesignsystem.com/components/breadcrumbs) in React.
// Based on SLDS v2.1.0-rc.2

// ## Dependencies

// ### React
import React from 'react';
import PropTypes from 'prop-types';

// This component's `checkProps` which issues warnings to developers about properties when in development mode (similar to React's built in development tools)
import checkProps from './check-props';
import componentDoc from './docs.json';

// ## Constants
import { BREADCRUMB } from '../../utilities/constants';

const defaultProps = {
	assistiveText: {
		label: 'Breadcrumbs',
	},
};

/**
 * Use breadcrumbs to note the path of a record and help the user to navigate back to the parent.Breadcrumb based on SLDS 2.1.0-dev
 */
const Breadcrumb = (props) => {
	checkProps(BREADCRUMB, props, componentDoc);

	const { trail } = props;
	const assistiveText =
		typeof props.assistiveText === 'string'
			? props.assistiveText
			: {
					...defaultProps.assistiveText,
					...props.assistiveText,
				}.label;

	return (
		<nav role="navigation" aria-label={assistiveText}>
			<ol className="slds-breadcrumb slds-list_horizontal">
				{trail.map((crumb, index) => (
					/* eslint-disable react/no-array-index-key */
					<li
						key={index} // There isn't any better reasonable way to identity these
						className="slds-breadcrumb__item slds-text-title_caps"
					>
						{crumb}
					</li>
				))}
			</ol>
		</nav>
	);
};

Breadcrumb.displayName = BREADCRUMB;

Breadcrumb.propTypes = {
	/**
	 * **Assistive text for accessibility.**
	 * This object is merged with the default props object on every render.
	 * * `label`: The assistive text for the breadcrumb trail.
	 */
	assistiveText: PropTypes.shape({
		label: PropTypes.string,
	}),
	/**
	 * An array of react elements presumably anchor elements.
	 */
	trail: PropTypes.array,
};

Breadcrumb.defaultProps = defaultProps;

export default Breadcrumb;