Merge pull request #4103 from traPtitech/fix/register_error_message

ユーザー登録のエラーメッセージをいい感じに

src/components/Authenticate/composables/useRegister.ts

@@ -1,6 +1,7 @@
 import { reactive, ref } from 'vue'
 import { useRouter } from 'vue-router'
 import apis from '/@/lib/apis'
+import type { AxiosError } from 'axios'
 
 const useRegister = () => {
   const router = useRouter()
@@ -17,7 +18,33 @@ const useRegister = () => {
 
       router.push('/')
     } catch (e) {
-      error.value = '' + e
+      const err = e as AxiosError<{ message: string }>
+      if (!err.response) return
+
+      const message = err.response.data.message
+      const status = err.response.status
+      switch (true) {
+        case message.includes('name: cannot be blank.'):
+          error.value = 'IDを入力してください'
+          break
+        case message.includes('password: cannot be blank.'):
+          error.value = 'パスワードを入力してください'
+          break
+        case message.includes('name conflicts'):
+          error.value = 'そのIDは既に使用されています'
+          break
+        case message.includes(
+          'password: the length must be between 10 and 32.'
+        ):
+          error.value = 'パスワードは10～32字で入力してください'
+          break
+        case message.includes('name: must contain [a-zA-Z0-9_-] only.'):
+          error.value =
+            'IDは半角英数字とハイフン、アンダースコアのみ使用できます'
+          break
+        default:
+          error.value = `${status}: ${message}`
+      }
     }
   }