chore: team stuff (#1228)

- Added functionality to decline team invitations
- Added email notifications for when team is deleted
- Added email notifications for team members joining and leaving

apps/web/src/app/(unauthenticated)/team/decline/[token]/page.tsx

@@ -0,0 +1,120 @@
+import Link from 'next/link';
+
+import { DateTime } from 'luxon';
+
+import { getServerComponentSession } from '@documenso/lib/next-auth/get-server-component-session';
+import { encryptSecondaryData } from '@documenso/lib/server-only/crypto/encrypt';
+import { declineTeamInvitation } from '@documenso/lib/server-only/team/decline-team-invitation';
+import { getTeamById } from '@documenso/lib/server-only/team/get-team';
+import { prisma } from '@documenso/prisma';
+import { TeamMemberInviteStatus } from '@documenso/prisma/client';
+import { Button } from '@documenso/ui/primitives/button';
+
+type DeclineInvitationPageProps = {
+  params: {
+    token: string;
+  };
+};
+
+export default async function DeclineInvitationPage({
+  params: { token },
+}: DeclineInvitationPageProps) {
+  const session = await getServerComponentSession();
+
+  const teamMemberInvite = await prisma.teamMemberInvite.findUnique({
+    where: {
+      token,
+    },
+  });
+
+  if (!teamMemberInvite) {
+    return (
+      <div className="w-screen max-w-lg px-4">
+        <div className="w-full">
+          <h1 className="text-4xl font-semibold">Invalid token</h1>
+
+          <p className="text-muted-foreground mb-4 mt-2 text-sm">
+            This token is invalid or has expired. No action is needed.
+          </p>
+
+          <Button asChild>
+            <Link href="/">Return</Link>
+          </Button>
+        </div>
+      </div>
+    );
+  }
+
+  const team = await getTeamById({ teamId: teamMemberInvite.teamId });
+
+  const user = await prisma.user.findFirst({
+    where: {
+      email: {
+        equals: teamMemberInvite.email,
+        mode: 'insensitive',
+      },
+    },
+  });
+
+  if (user) {
+    await declineTeamInvitation({ userId: user.id, teamId: team.id });
+  }
+
+  if (!user && teamMemberInvite.status !== TeamMemberInviteStatus.DECLINED) {
+    await prisma.teamMemberInvite.update({
+      where: {
+        id: teamMemberInvite.id,
+      },
+      data: {
+        status: TeamMemberInviteStatus.DECLINED,
+      },
+    });
+  }
+
+  const email = encryptSecondaryData({
+    data: teamMemberInvite.email,
+    expiresAt: DateTime.now().plus({ days: 1 }).toMillis(),
+  });
+
+  if (!user) {
+    return (
+      <div>
+        <h1 className="text-4xl font-semibold">Team invitation</h1>
+
+        <p className="text-muted-foreground mt-2 text-sm">
+          You have been invited by <strong>{team.name}</strong> to join their team.
+        </p>
+
+        <p className="text-muted-foreground mb-4 mt-1 text-sm">
+          To decline this invitation you must create an account.
+        </p>
+
+        <Button asChild>
+          <Link href={`/signup?email=${encodeURIComponent(email)}`}>Create account</Link>
+        </Button>
+      </div>
+    );
+  }
+
+  const isSessionUserTheInvitedUser = user?.id === session.user?.id;
+
+  return (
+    <div className="w-screen max-w-lg px-4">
+      <h1 className="text-4xl font-semibold">Invitation declined</h1>
+
+      <p className="text-muted-foreground mb-4 mt-2 text-sm">
+        You have declined the invitation from <strong>{team.name}</strong> to join their team.
+      </p>
+
+      {isSessionUserTheInvitedUser ? (
+        <Button asChild>
+          <Link href="/">Return to Dashboard</Link>
+        </Button>
+      ) : (
+        <Button asChild>
+          <Link href="/">Return to Home</Link>
+        </Button>
+      )}
+    </div>
+  );
+}