feat: add support for split dns

app/routes/_data.dns._index/dialogs/nameserver.tsx

@@ -0,0 +1,162 @@
+import { RepoForkedIcon } from '@primer/octicons-react'
+import { Form, useSubmit } from '@remix-run/react'
+import { useState } from 'react'
+
+import Dialog from '~/components/Dialog'
+import Switch from '~/components/Switch'
+import TextField from '~/components/TextField'
+import Tooltip from '~/components/Tooltip'
+import { cn } from '~/utils/cn'
+
+interface Props {
+	nameservers: Record<string, string[]>
+}
+
+export default function AddNameserver({ nameservers }: Props) {
+	const submit = useSubmit()
+	const [split, setSplit] = useState(false)
+	const [ns, setNs] = useState('')
+	const [domain, setDomain] = useState('')
+
+	return (
+		<Dialog>
+			<Dialog.Button>
+				Add nameserver
+			</Dialog.Button>
+			<Dialog.Panel>
+				{close => (
+					<>
+						<Dialog.Title>
+							Add nameserver
+						</Dialog.Title>
+						<Dialog.Text className="font-semibold">
+							Nameserver
+						</Dialog.Text>
+						<Dialog.Text className="text-sm">
+							Use this IPv4 or IPv6 address to resolve names.
+						</Dialog.Text>
+						<Form
+							method="POST"
+							onSubmit={(event) => {
+								event.preventDefault()
+								if (!ns) return
+
+								if (split) {
+									const splitNs: Record<string, string[]> = {}
+									for (const [key, value] of Object.entries(nameservers)) {
+										if (key === 'global') continue
+										splitNs[key] = value
+									}
+
+									if (Object.keys(splitNs).includes(domain)) {
+										splitNs[domain].push(ns)
+									} else {
+										splitNs[domain] = [ns]
+									}
+
+									submit({
+										'dns_config.restricted_nameservers': splitNs,
+									}, {
+										method: 'PATCH',
+										encType: 'application/json',
+									})
+								} else {
+									const globalNs = nameservers.global
+									globalNs.push(ns)
+
+									submit({
+										'dns_config.nameservers': globalNs,
+									}, {
+										method: 'PATCH',
+										encType: 'application/json',
+									})
+								}
+
+								setNs('')
+								setDomain('')
+								setSplit(false)
+								close()
+							}}
+						>
+							<TextField
+								label="DNS Server"
+								placeholder="1.2.3.4"
+								name="ns"
+								state={[ns, setNs]}
+								className="mt-2 mb-8"
+							/>
+							<div className="flex items-center justify-between">
+								<div className="block">
+									<div className="inline-flex items-center gap-2">
+										<Dialog.Text className="font-semibold">
+											Restrict to domain
+										</Dialog.Text>
+										<Tooltip>
+											<Tooltip.Button className={cn(
+												'text-xs rounded-md px-1.5 py-0.5',
+												'bg-ui-200 dark:bg-ui-800',
+												'text-ui-600 dark:text-ui-300',
+											)}
+											>
+												<RepoForkedIcon className="w-4 h-4 mr-0.5" />
+												Split DNS
+											</Tooltip.Button>
+											<Tooltip.Body>
+												Only clients that support split DNS
+												(Tailscale v1.8 or later for most platforms)
+												will use this nameserver. Older clients
+												will ignore it.
+											</Tooltip.Body>
+										</Tooltip>
+									</div>
+									<Dialog.Text className="text-sm">
+										This nameserver will only be used for some domains.
+									</Dialog.Text>
+								</div>
+								<Switch
+									label="Split DNS"
+									defaultSelected={split}
+									onChange={() => { setSplit(!split) }}
+								/>
+							</div>
+							{split
+								? (
+									<>
+										<Dialog.Text className="font-semibold mt-8">
+											Domain
+										</Dialog.Text>
+										<TextField
+											label="Domain"
+											placeholder="example.com"
+											name="domain"
+											state={[domain, setDomain]}
+											className="my-2"
+										/>
+										<Dialog.Text className="text-sm">
+											Only single-label or fully-qualified queries
+											matching this suffix should use the nameserver.
+										</Dialog.Text>
+									</>
+									)
+								: undefined}
+							<div className="mt-6 flex justify-end gap-2 mt-6">
+								<Dialog.Action
+									variant="cancel"
+									onPress={close}
+								>
+									Cancel
+								</Dialog.Action>
+								<Dialog.Action
+									variant="confirm"
+									onPress={close}
+								>
+									Add
+								</Dialog.Action>
+							</div>
+						</Form>
+					</>
+				)}
+			</Dialog.Panel>
+		</Dialog>
+	)
+}