first commit

src/utils/auth-storage.ts

@@ -0,0 +1,43 @@
+import type { AuthResult } from '../api/auth'
+import type { StoredAuth } from '../types/session'
+
+const AUTH_STORAGE_KEY = 'mahjong_auth'
+
+export function readStoredAuth(): StoredAuth | null {
+  const raw = localStorage.getItem(AUTH_STORAGE_KEY)
+  if (!raw) {
+    return null
+  }
+
+  try {
+    const parsed = JSON.parse(raw) as StoredAuth
+    if (typeof parsed.token !== 'string' || parsed.token.length === 0) {
+      return null
+    }
+
+    return parsed
+  } catch {
+    return null
+  }
+}
+
+export function saveAuth(result: AuthResult): StoredAuth {
+  const value: StoredAuth = {
+    token: result.token,
+    tokenType: result.tokenType,
+    refreshToken: result.refreshToken,
+    expiresIn: result.expiresIn,
+    user: result.user,
+  }
+
+  localStorage.setItem(AUTH_STORAGE_KEY, JSON.stringify(value))
+  return value
+}
+
+export function clearAuth(): void {
+  localStorage.removeItem(AUTH_STORAGE_KEY)
+}
+
+export function writeStoredAuth(value: StoredAuth): void {
+  localStorage.setItem(AUTH_STORAGE_KEY, JSON.stringify(value))
+}