Spring security example

package com.example.demo;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.ProviderManager;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.config.Customizer;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
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.factory.PasswordEncoderFactories;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.provisioning.InMemoryUserDetailsManager;
import org.springframework.security.web.SecurityFilterChain;

import static org.springframework.security.config.Customizer.withDefaults;

@Configuration
public class SecurityConfig {

    @Bean
    public InMemoryUserDetailsManager userDetailsService(PasswordEncoder passwordEncoder) {
        UserDetails user = User.withUsername("user1")
                .password(passwordEncoder.encode("secret1"))
                .roles("USER")
                .build();

        UserDetails admin = User.withUsername("admin1")
                .password(passwordEncoder.encode("secret1"))
                .roles("USER", "ADMIN")
                .build();

        return new InMemoryUserDetailsManager(user, admin);
    }

    @Bean
    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
        return http.authorizeHttpRequests(request -> request.anyRequest()
                        .authenticated())
                .httpBasic(Customizer.withDefaults())
                .build();
    }


    @Bean
    public PasswordEncoder passwordEncoder() {
        PasswordEncoder encoder = PasswordEncoderFactories.createDelegatingPasswordEncoder();
        return encoder;
    }

}