export default function Page({ params }: { params: { doc: string } }) {
  const router = useRouter();

  const { data, refetch } = api.docs.getDoc.useQuery({
    docId: parseInt(params.doc),
  });

  const toggleLock = api.docs.toggleLock.useMutation({
    onSuccess: () => {
      router.refresh(); // doesn't actually refresh the UI
      revalidatePath("/"); // doesn't actually refresh the UI
    },
  });

  if (!data) {
    return <div>loading...</div>;
  }

  <Button
    disabled={toggleLock.isLoading}
    variant="secondary"
    className="mt-2"
    onClick={() =>
      toggleLock.mutate({
        docId: parseInt(params.doc),
      })
    }
  >
    {toggleLock.isLoading ? "LOADING..." : "Toggle Lock"}
  </Button>

</div>
    ...

  toggleLock: publicProcedure
    .input(z.object({ docId: z.number() }))
    .mutation(async ({ ctx, input }) => {


      const docBefore = await ctx.db.query.docs.findFirst({
        where(fields, operators) {
          return operators.eq(fields.id, input.docId)
        },
      })
      const res = await ctx.db.update(docs).set({
        isLocked: docBefore?.isLocked ? false : true,
      }).where(eq(docs.id, input.docId))

      const docAfter = await ctx.db.query.docs.findFirst({
        where(fields, operators) {
          return operators.eq(fields.id, input.docId)
        },
      })

      return docAfter;
    }),