Add google oauth2

pom.xml

@@ -43,6 +43,10 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-security</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-oauth2-client</artifactId>
+        </dependency>
 
         <dependency>
             <groupId>org.projectlombok</groupId>

src/main/java/com/faf223/expensetrackerfaf/config/SecurityConfiguration.java

@@ -1,13 +1,25 @@
 package com.faf223.expensetrackerfaf.config;
 
 import lombok.RequiredArgsConstructor;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.security.authentication.AuthenticationProvider;
+import org.springframework.security.config.Customizer;
 import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
 import org.springframework.security.config.http.SessionCreationPolicy;
+import org.springframework.security.oauth2.client.registration.ClientRegistration;
+import org.springframework.security.oauth2.client.registration.ClientRegistrationRepository;
+import org.springframework.security.oauth2.client.registration.InMemoryClientRegistrationRepository;
+import org.springframework.security.oauth2.client.userinfo.DefaultOAuth2UserService;
+import org.springframework.security.oauth2.client.userinfo.OAuth2UserRequest;
+import org.springframework.security.oauth2.client.userinfo.OAuth2UserService;
+import org.springframework.security.oauth2.core.AuthorizationGrantType;
+import org.springframework.security.oauth2.core.oidc.IdTokenClaimNames;
+import org.springframework.security.oauth2.core.user.OAuth2User;
 import org.springframework.security.web.SecurityFilterChain;
 import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
 
@@ -23,7 +35,7 @@ public class SecurityConfiguration {
     @Bean
     public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
         http
-                .csrf(csrf -> csrf.disable())
+                .csrf(AbstractHttpConfigurer::disable)
                 .authorizeHttpRequests(auth -> auth
                         .requestMatchers("/api/v1/auth/**").permitAll()
                         .anyRequest().authenticated()
@@ -31,7 +43,34 @@ public class SecurityConfiguration {
                 .sessionManagement(session -> session.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
                 .authenticationProvider(authenticationProvider)
                 .addFilterBefore(jwtAuthFilter, UsernamePasswordAuthenticationFilter.class); // will be executed before UsernamePasswordAuthenticationFilter
+//                .oauth2Login(Customizer.withDefaults());
 
         return http.build();
     }
+
+    @Bean
+    public ClientRegistrationRepository clientRegistrationRepository(
+            @Value("${spring.security.oauth2.client.registration.google.client-id}") String clientId,
+            @Value("${spring.security.oauth2.client.registration.google.client-secret}") String clientSecret) {
+
+        ClientRegistration registration = ClientRegistration.withRegistrationId("google")
+                .clientId(clientId)
+                .clientSecret(clientSecret)
+                .clientName("Google")
+                .authorizationGrantType(AuthorizationGrantType.AUTHORIZATION_CODE)
+                .redirectUri("http://localhost:8081/login/oauth2/code/{registrationId}")
+                .scope("openid", "profile", "email")
+                .authorizationUri("https://accounts.google.com/o/oauth2/auth")
+                .tokenUri("https://accounts.google.com/o/oauth2/token")
+                .userInfoUri("https://www.googleapis.com/oauth2/v3/userinfo")
+                .userNameAttributeName(IdTokenClaimNames.SUB)
+                .build();
+
+        return new InMemoryClientRegistrationRepository(registration);
+    }
+
+    @Bean
+    public OAuth2UserService<OAuth2UserRequest, OAuth2User> oAuth2UserService() {
+        return new DefaultOAuth2UserService();
+    }
 }