Join group by URL (Closes #55)

src/app/groups/add-group-by-url-button.tsx

@@ -0,0 +1,91 @@
+import { getGroupInfoAction } from '@/app/groups/add-group-by-url-button-actions'
+import { saveRecentGroup } from '@/app/groups/recent-groups-helpers'
+import { Button } from '@/components/ui/button'
+import { Input } from '@/components/ui/input'
+import {
+  Popover,
+  PopoverContent,
+  PopoverTrigger,
+} from '@/components/ui/popover'
+import { useMediaQuery } from '@/lib/hooks'
+import { Loader2, Plus } from 'lucide-react'
+import { useState } from 'react'
+
+type Props = {
+  reload: () => void
+}
+
+export function AddGroupByUrlButton({ reload }: Props) {
+  const isDesktop = useMediaQuery('(min-width: 640px)')
+  const [url, setUrl] = useState('')
+  const [error, setError] = useState(false)
+  const [open, setOpen] = useState(false)
+  const [pending, setPending] = useState(false)
+
+  return (
+    <Popover open={open} onOpenChange={setOpen}>
+      <PopoverTrigger asChild>
+        <Button variant="secondary">
+          {/* <Plus className="w-4 h-4 mr-2" /> */}
+          <>Add by URL</>
+        </Button>
+      </PopoverTrigger>
+      <PopoverContent
+        align={isDesktop ? 'end' : 'start'}
+        className="[&_p]:text-sm flex flex-col gap-3"
+      >
+        <h3 className="font-bold">Add a group by URL</h3>
+        <p>
+          If a group was shared with you, you can paste its URL here to add it
+          to your list.
+        </p>
+        <form
+          className="flex gap-2"
+          onSubmit={async (event) => {
+            event.preventDefault()
+            const [, groupId] =
+              url.match(
+                new RegExp(`${window.location.origin}/groups/([^/]+)`),
+              ) ?? []
+            setPending(true)
+            const group = groupId ? await getGroupInfoAction(groupId) : null
+            setPending(false)
+            if (!group) {
+              setError(true)
+            } else {
+              saveRecentGroup({ id: group.id, name: group.name })
+              reload()
+              setUrl('')
+              setOpen(false)
+            }
+          }}
+        >
+          <Input
+            type="url"
+            required
+            placeholder="https://spliit.app/..."
+            className="flex-1 text-base"
+            value={url}
+            disabled={pending}
+            onChange={(event) => {
+              setUrl(event.target.value)
+              setError(false)
+            }}
+          />
+          <Button size="icon" type="submit" disabled={pending}>
+            {pending ? (
+              <Loader2 className="w-4 h-4 animate-spin" />
+            ) : (
+              <Plus className="w-4 h-4" />
+            )}
+          </Button>
+        </form>
+        {error && (
+          <p className="text-destructive">
+            Oops, we are not able to find the group from the URL you provided…
+          </p>
+        )}
+      </PopoverContent>
+    </Popover>
+  )
+}