UPDATE OAuth2 user service to handle user creation and redirect after login

src/main/java/com/ddf/vodsystem/configuration/CustomOAuth2UserService.java

@@ -1,4 +1,4 @@
-package com.ddf.vodsystem.security;
+package com.ddf.vodsystem.configuration;
 import com.ddf.vodsystem.entities.User;
 import com.ddf.vodsystem.repositories.UserRepository;
 
@@ -8,6 +8,9 @@ import org.springframework.security.oauth2.core.OAuth2AuthenticationException;
 import org.springframework.security.oauth2.core.user.OAuth2User;
 import org.springframework.stereotype.Service;
 
+import java.time.LocalDateTime;
+import java.util.Optional;
+
 
 @Service
 public class CustomOAuth2UserService extends DefaultOAuth2UserService  {
@@ -26,15 +29,18 @@ public class CustomOAuth2UserService extends DefaultOAuth2UserService  {
         String name = oAuth2User.getAttribute("name");
         String googleId = oAuth2User.getAttribute("sub");
 
-        userRepository.findByGoogleId(googleId).orElseGet(() -> {
+        Optional<User> existingUser = userRepository.findByGoogleId(googleId);
+
+        if (existingUser.isEmpty()) {
             User user = new User();
             user.setEmail(email);
             user.setName(name);
             user.setGoogleId(googleId);
             user.setUsername(email);
             user.setRole(0);
-            return userRepository.save(user);
-        });
+            user.setCreatedAt(LocalDateTime.now());
+            userRepository.save(user);
+        }
 
         return oAuth2User;
     }

src/main/java/com/ddf/vodsystem/configuration/SecurityConfig.java

@@ -1,5 +1,6 @@
-package com.ddf.vodsystem.security;
+package com.ddf.vodsystem.configuration;
 
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
@@ -7,7 +8,6 @@ import org.springframework.security.config.annotation.web.configuration.EnableWe
 import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
 import org.springframework.security.web.SecurityFilterChain;
 import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
-import org.springframework.security.web.authentication.SimpleUrlAuthenticationSuccessHandler;
 
 @Configuration
 @EnableWebSecurity
@@ -15,6 +15,9 @@ public class SecurityConfig {
 
     private final CustomOAuth2UserService customOAuth2UserService;
 
+    @Value("${frontend.url}")
+    private String frontendUrl;
+
     public SecurityConfig(CustomOAuth2UserService customOAuth2UserService) {
         this.customOAuth2UserService = customOAuth2UserService;
     }
@@ -24,6 +27,7 @@ public class SecurityConfig {
         http
                 .csrf(AbstractHttpConfigurer::disable)
                 .authorizeHttpRequests(auth -> auth
+                        .requestMatchers("/api/v1/auth/login", "/api/v1/auth/user").permitAll()
                         .anyRequest().authenticated()
                 )
                 .oauth2Login(oauth2 -> oauth2
@@ -39,7 +43,7 @@ public class SecurityConfig {
 
     @Bean
     public AuthenticationSuccessHandler successHandler() {
-        return new SimpleUrlAuthenticationSuccessHandler("/api/v1/auth/user");
+        return (request, response, authentication) -> response.sendRedirect(frontendUrl);
     }
 
 }

src/main/java/com/ddf/vodsystem/controllers/AuthController.java

@@ -16,9 +16,4 @@ public class AuthController {
     public Map<String, Object> user(@AuthenticationPrincipal OAuth2User principal) {
         return principal.getAttributes();
     }
-
-    @GetMapping("/login")
-    public String login() {
-        return "login";
-    }
 }