yude.jp/pages/minecraft/players/[uuid].js

// Base layout
import Layout from "../../components/Layout"

// React
import { useRouter } from 'next/router'

// Data fetching
import Players from '../../components/Minecraft/Players'
import PlayerName from '../../components/Minecraft/PlayerName'
import useSwr from 'swr'

const fetcher = (url) => fetch(url).then((res) => res.json())

export default function UUID() {
  const router = useRouter()
  const { uuid } = router.query
  const { data, error } = useSwr(
    router.query.id ? `/api/user/${router.query.id}` : null,
    fetcher
  )
  
  if (error) {
    return (
      <>
        <Layout title="エラー - プレイヤー情報">
        <p className="text-2xl">エラーが発生しました。</p>
        </Layout>
      </>
    )
  }
  
  if (!data) {
    return (
      <>
        <Layout title="読み込み中... - プレイヤー情報">
        <Players uuid={uuid} />
        </Layout>
      </>
    )
  }
  
  return (
    <>
      <Layout title={<PlayerName uuid={uuid.uuid} /> + " - " + "プレイヤー情報"}>
      <Players uuid={uuid} />
      </Layout>
    </>
  )
}