source: bus-n-go-do-5ta-faza/src/main/java/mk/ukim/finki/busngo/config/WebSecurityConfig.java

package mk.ukim.finki.busngo.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
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.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.provisioning.InMemoryUserDetailsManager;
import org.springframework.security.web.SecurityFilterChain;


@Configuration
@EnableWebSecurity
@EnableMethodSecurity
public class WebSecurityConfig {

    private final PasswordEncoder passwordEncoder;
    private final CustomUsernamePasswordAuthenticationProvider authProvider;

    public WebSecurityConfig(PasswordEncoder passwordEncoder, CustomUsernamePasswordAuthenticationProvider authProvider) {
        this.passwordEncoder = passwordEncoder;
        this.authProvider = authProvider;
    }

    @Bean
    public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception  {

        http
                .csrf(AbstractHttpConfigurer::disable)
                .authorizeHttpRequests( (requests) -> requests
                        .requestMatchers("/", "/home", "/assets/**", "/register")
                        .permitAll()
                        .requestMatchers("/admin/**").hasRole("ADMIN")
                        .anyRequest()
                        .authenticated()
                )
                .formLogin((form) -> form
                        .loginPage("/login")
                        .permitAll()
                        .failureUrl("/login?error=BadCredentials")
                        .defaultSuccessUrl("/bilet", true)
                )
                .logout((logout) -> logout
                        .logoutUrl("/logout")
                        .clearAuthentication(true)
                        .invalidateHttpSession(true)
                        .deleteCookies("JSESSIONID")
                        .logoutSuccessUrl("/login")
                )
                .exceptionHandling((ex) -> ex
                        .accessDeniedPage("/access_denied")
                );

        return http.build();
    }



    @Bean
    public AuthenticationManager authManager(HttpSecurity http) throws Exception {
        AuthenticationManagerBuilder authenticationManagerBuilder =
                http.getSharedObject(AuthenticationManagerBuilder.class);
        authenticationManagerBuilder.authenticationProvider(authProvider);
        return authenticationManagerBuilder.build();
    }
}