1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
import Link from '@components/atoms/links/link';
import { settings } from '@utils/config';
import Script from 'next/script';
import { FC } from 'react';
import { useIntl } from 'react-intl';
import { BreadcrumbList, ListItem, WithContext } from 'schema-dts';
import styles from './breadcrumb.module.scss';
export type BreadcrumbItem = {
/**
* The item id.
*/
id: string;
/**
* The item URL.
*/
url: string;
/**
* The item name.
*/
name: string;
};
export type BreadcrumbProps = {
/**
* Set additional classnames to the nav element.
*/
className?: string;
/**
* The breadcrumb items
*/
items: BreadcrumbItem[];
};
/**
* Breadcrumb component
*
* Render a breadcrumb navigation.
*/
const Breadcrumb: FC<BreadcrumbProps> = ({ items, ...props }) => {
const intl = useIntl();
/**
* Retrieve the breadcrumb list items.
*
* @param {BreadcrumbItem[]} list - The breadcrumb items.
* @returns {JSX.Element[]} The list items.
*/
const getListItems = (list: BreadcrumbItem[]): JSX.Element[] => {
return list.map((item, index) => {
const isLastItem = index === list.length - 1;
const itemClassnames = isLastItem
? `${styles.item} screen-reader-text`
: styles.item;
return (
<li key={item.id} className={itemClassnames}>
{isLastItem ? item.name : <Link href={item.url}>{item.name}</Link>}
</li>
);
});
};
/**
* Retrieve the breadcrumb list items with Schema.org format.
*
* @param {BreadcrumbItem[]} list - The breadcrumb items.
* @returns {ListItem[]} An array of list items using Schema.org format.
*/
const getSchemaItems = (list: BreadcrumbItem[]): ListItem[] => {
const schemaItems: ListItem[] = [];
list.forEach((item, index) => {
schemaItems.push({
'@type': 'ListItem',
position: index + 1,
name: item.name,
item: item.url,
});
});
return schemaItems;
};
const schemaJsonLd: WithContext<BreadcrumbList> = {
'@context': 'https://schema.org',
'@type': 'BreadcrumbList',
'@id': `${settings.url}/#breadcrumb`,
itemListElement: getSchemaItems(items),
};
return (
<>
<Script
id="schema-breadcrumb"
type="application/ld+json"
dangerouslySetInnerHTML={{ __html: JSON.stringify(schemaJsonLd) }}
/>
<nav {...props}>
<span className="screen-reader-text">
{intl.formatMessage({
defaultMessage: 'You are here:',
description: 'Breadcrumb: You are here prefix',
id: '16zl9Z',
})}
</span>
<ol className={styles.list}>{getListItems(items)}</ol>
</nav>
</>
);
};
export default Breadcrumb;
|
