작업계획서대로 진행

backend/api/auth/google/index.get.ts

@@ -0,0 +1,35 @@
+/**
+ * Google OAuth 시작
+ * GET /api/auth/google
+ */
+export default defineEventHandler(async (event) => {
+  const config = useRuntimeConfig()
+  
+  const clientId = config.googleClientId || process.env.GOOGLE_CLIENT_ID
+  const redirectUri = config.googleRedirectUri || process.env.GOOGLE_REDIRECT_URI || 'http://localhost:3000/api/auth/google/callback'
+  
+  if (!clientId) {
+    throw createError({ statusCode: 500, message: 'Google OAuth가 설정되지 않았습니다.' })
+  }
+  
+  const scope = encodeURIComponent('openid email profile')
+  const state = Math.random().toString(36).substring(7) // CSRF 방지
+  
+  // state를 쿠키에 저장
+  setCookie(event, 'oauth_state', state, {
+    httpOnly: true,
+    secure: process.env.NODE_ENV === 'production',
+    maxAge: 300 // 5분
+  })
+  
+  const authUrl = `https://accounts.google.com/o/oauth2/v2/auth?` +
+    `client_id=${clientId}` +
+    `&redirect_uri=${encodeURIComponent(redirectUri)}` +
+    `&response_type=code` +
+    `&scope=${scope}` +
+    `&state=${state}` +
+    `&access_type=offline` +
+    `&prompt=consent`
+  
+  return sendRedirect(event, authUrl)
+})