From fc882c9dff4829ff0f2b64f07c174cc415bfca29 Mon Sep 17 00:00:00 2001
From: kjs <kjs@wace.me>
Date: Fri, 14 Aug 2026 10:51:51 +0900
Subject: [PATCH] =?UTF-8?q?=EC=9C=A0=EB=A0=B9=20=EB=8B=89=EB=84=A4?=
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- 등록만 되고 세이브가 저장된 적 없는(data NULL) 닉네임은
  중복 체크에서 사용 가능으로, 재등록 시 새 토큰으로 재선점
- 불러오기 실패 시 "서버에 닿지 않아" 대신 "그 이름의 마을은 없는걸?"

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
---
 src/components/game/NicknameModal.tsx |  2 +-
 src/lib/villages.ts                   | 11 +++++++----
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/components/game/NicknameModal.tsx b/src/components/game/NicknameModal.tsx
index da4baf9..39696b8 100644
--- a/src/components/game/NicknameModal.tsx
+++ b/src/components/game/NicknameModal.tsx
@@ -78,7 +78,7 @@ export default function NicknameModal({ onDone }: { onDone: () => void }) {
     } else {
       const found = await recoverVillage(trimmed);
       if (!found) {
-        setStatus("offline");
+        setStatus("available"); // 불러오기 모드에선 "그 이름의 마을은 없는걸?"
         setSubmitting(false);
         return;
       }
diff --git a/src/lib/villages.ts b/src/lib/villages.ts
index 2f9764f..aae00d5 100644
--- a/src/lib/villages.ts
+++ b/src/lib/villages.ts
@@ -24,9 +24,11 @@ export function validNickname(name: unknown): name is string {
 
 export async function isAvailable(nickname: string): Promise<boolean> {
   await ensureTable();
-  const r = await db.query("SELECT 1 FROM villages WHERE nickname = $1", [
-    nickname,
-  ]);
+  // 데이터가 저장된 적 없는 유령 등록은 재사용 가능
+  const r = await db.query(
+    "SELECT 1 FROM villages WHERE nickname = $1 AND data IS NOT NULL",
+    [nickname],
+  );
   return r.rowCount === 0;
 }
 
@@ -36,7 +38,8 @@ export async function register(nickname: string, token: string): Promise<boolean
   const r = await db.query(
     `INSERT INTO villages (nickname, token, data)
      VALUES ($1, $2, NULL)
-     ON CONFLICT (nickname) DO NOTHING`,
+     ON CONFLICT (nickname) DO UPDATE SET token = EXCLUDED.token, updated_at = now()
+     WHERE villages.data IS NULL`,
     [nickname, token],
   );
   return (r.rowCount ?? 0) > 0;