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import {
Link,
NavLink,
Outlet,
useLoaderData,
useNavigation,
useSubmit,
} from 'react-router-dom'
import { useDebounce } from 'rooks'
import {
queryOptions,
useIsFetching,
useSuspenseQuery,
} from '@tanstack/react-query'
import { getContacts } from '../contacts'
import type { QueryClient } from '@tanstack/react-query'
import type { LoaderFunctionArgs } from 'react-router-dom'
const contactListQuery = (q?: string) =>
queryOptions({
queryKey: ['contacts', 'list', q ?? 'all'],
queryFn: () => getContacts(q),
})
export const loader =
(queryClient: QueryClient) =>
async ({ request }: LoaderFunctionArgs) => {
const url = new URL(request.url)
const q = url.searchParams.get('q') ?? ''
await queryClient.ensureQueryData(contactListQuery(q))
return { q }
}
export default function Root() {
const { q } = useLoaderData() as Awaited<
ReturnType<ReturnType<typeof loader>>
>
const { data: contacts } = useSuspenseQuery(contactListQuery(q))
const searching = useIsFetching({ queryKey: ['contacts', 'list'] }) > 0
const navigation = useNavigation()
const submit = useSubmit()
const debouncedSubmit = useDebounce(submit, 500)
return (
<>
<div id="sidebar">
<h1>React Router Contacts</h1>
<div>
<form id="search-form" role="search">
<input
id="q"
aria-label="Search contacts"
placeholder="Search"
type="search"
name="q"
key={q}
autoFocus
defaultValue={q}
className={searching ? 'loading' : ''}
onChange={(event) => {
debouncedSubmit(event.currentTarget.form)
}}
/>
<div id="search-spinner" aria-hidden hidden={!searching} />
<div className="sr-only" aria-live="polite"></div>
</form>
<Link to="contacts/new" className="button">
New
</Link>
</div>
<nav>
{contacts.length ? (
<ul>
{contacts.map((contact) => (
<li key={contact.id}>
<NavLink
to={`contacts/${contact.id}`}
className={({ isActive, isPending }) =>
isActive ? 'active' : isPending ? 'pending' : ''
}
>
{contact.first || contact.last ? (
<>
{contact.first} {contact.last}
</>
) : (
<i>No Name</i>
)}{' '}
{contact.favorite && <span>★</span>}
</NavLink>
</li>
))}
</ul>
) : (
<p>
<i>No contacts</i>
</p>
)}
</nav>
</div>
<div
id="detail"
className={navigation.state === 'loading' ? 'loading' : ''}
>
<Outlet />
</div>
</>
)
}
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