package com.baeldung.relationships;

import javax.annotation.PostConstruct;
import javax.sql.DataSource;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
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.configuration.WebSecurityCustomizer;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.data.repository.query.SecurityEvaluationContextExtension;
import org.springframework.security.provisioning.JdbcUserDetailsManager;
import org.springframework.security.provisioning.UserDetailsManager;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.web.context.WebApplicationContext;

import com.baeldung.relationships.security.AuthenticationSuccessHandlerImpl;
import com.baeldung.relationships.security.CustomUserDetailsService;

@Configuration
@EnableWebSecurity
@ComponentScan("com.baeldung.security")
public class SpringSecurityConfig {

    @Autowired
    private WebApplicationContext applicationContext;

    @Autowired
    private AuthenticationSuccessHandlerImpl successHandler;

    @Autowired
    private DataSource dataSource;

    private CustomUserDetailsService userDetailsService;

    @PostConstruct
    public void completeSetup() {
        userDetailsService = applicationContext.getBean(CustomUserDetailsService.class);
    }

    @Bean
    public UserDetailsManager users(HttpSecurity http) throws Exception {
        AuthenticationManager authenticationManager = http.getSharedObject(AuthenticationManagerBuilder.class)
            .userDetailsService(userDetailsService)
            .passwordEncoder(encoder())
            .and()
            .authenticationProvider(authenticationProvider())
            .build();

        JdbcUserDetailsManager jdbcUserDetailsManager = new JdbcUserDetailsManager(dataSource);
        jdbcUserDetailsManager.setAuthenticationManager(authenticationManager);
        return jdbcUserDetailsManager;
    }

    @Bean
    public WebSecurityCustomizer webSecurityCustomizer() {
        return (web) -> web.ignoring()
            .antMatchers("/resources/**");
    }

    @Bean
    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
        http.authorizeRequests()
            .antMatchers("/login")
            .permitAll()
            .and()
            .formLogin()
            .permitAll()
            .successHandler(successHandler)
            .and()
            .csrf()
            .disable();
        return http.build();
    }

    @Bean
    public DaoAuthenticationProvider authenticationProvider() {
        final DaoAuthenticationProvider authProvider = new DaoAuthenticationProvider();
        authProvider.setUserDetailsService(userDetailsService);
        authProvider.setPasswordEncoder(encoder());
        return authProvider;
    }

    @Bean
    public PasswordEncoder encoder() {
        return new BCryptPasswordEncoder(11);
    }

    @Bean
    public SecurityEvaluationContextExtension securityEvaluationContextExtension() {
        return new SecurityEvaluationContextExtension();
    }
}