feat: 이메일 인증 코드 검증 후 리디렉션 기능 추가 (#208)

- verifyEmailCode 메서드를 수정하여 이메일 인증 후 성공 및 실패 시 각각 다른 URL로 리디렉션하도록 구현
- UserException 발생 시 에러 메시지를 포함한 실패 리디렉션 추가
- HttpServletResponse를 사용하여 클라이언트에게 직접 리디렉션 응답 전송

Author: NCookies

src/main/java/org/ezcode/codetest/presentation/usermanagement/UserVerifyController.java

@@ -1,17 +1,15 @@
 package org.ezcode.codetest.presentation.usermanagement;
 
-import org.springframework.beans.factory.annotation.Value;
-import org.springframework.http.HttpHeaders;
 import org.ezcode.codetest.application.usermanagement.auth.dto.request.FindPasswordRequest;
 import org.ezcode.codetest.application.usermanagement.user.dto.request.ResetPasswordRequest;
 import org.ezcode.codetest.application.usermanagement.auth.dto.request.SendEmailRequest;
 import org.ezcode.codetest.application.usermanagement.auth.dto.response.FindPasswordResponse;
 import org.ezcode.codetest.application.usermanagement.auth.dto.response.SendEmailResponse;
-import org.ezcode.codetest.application.usermanagement.auth.dto.response.VerifyEmailCodeResponse;
 import org.ezcode.codetest.application.usermanagement.auth.service.AuthService;
 import org.ezcode.codetest.application.usermanagement.user.dto.response.ChangeUserPasswordResponse;
 import org.ezcode.codetest.application.usermanagement.user.dto.response.VerifyFindPasswordResponse;
 import org.ezcode.codetest.domain.user.model.entity.AuthUser;
+import org.ezcode.codetest.domain.user.exception.UserException;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.core.annotation.AuthenticationPrincipal;
@@ -21,13 +19,19 @@
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.util.UriComponentsBuilder;
 
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.servlet.http.HttpServletResponse;
 import jakarta.validation.Valid;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 
+import java.io.IOException;
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
+
 @Slf4j
 @RestController
 @RequiredArgsConstructor
@@ -48,11 +52,34 @@ public ResponseEntity<SendEmailResponse> sendMailCode(
     //이메일에서 버튼 클릭하면 자동으로 연결
     @Operation(summary = "이메일 코드 입력 및 인증", description = "이메일로 받은 코드를 입력하여 이메일 인증된 회원으로 전환합니다")
     @GetMapping("/auth/verify")
-    public ResponseEntity<VerifyEmailCodeResponse> verifyEmailCode(
+    public void verifyEmailCode(
         @RequestParam String email,
-        @RequestParam String key
-    ){
-        return ResponseEntity.status(HttpStatus.OK).body(authService.verifyEmailCode(email, key));
+        @RequestParam String key,
+        HttpServletResponse response
+    ) throws IOException {
+        try {
+            authService.verifyEmailCode(email, key);
+            
+            // 성공 시 프론트엔드로 리디렉션
+            String redirectUrl = UriComponentsBuilder
+                .fromUriString("https://ezcode.my/email-verify-success")
+                .queryParam("status", "success")
+                .build()
+                .toUriString();
+            
+            response.sendRedirect(redirectUrl);
+        } catch (UserException e) {
+            // 실패 시 프론트엔드로 리디렉션 (에러 메시지 포함)
+            String errorMessage = URLEncoder.encode(e.getMessage(), StandardCharsets.UTF_8);
+            String redirectUrl = UriComponentsBuilder
+                .fromUriString("https://ezcode.my/email-verify-failure")
+                .queryParam("status", "failure")
+                .queryParam("message", errorMessage)
+                .build()
+                .toUriString();
+            
+            response.sendRedirect(redirectUrl);
+        }
     }