package com.baeldung.security;

import com.baeldung.security.web.MySavedRequestAwareAuthenticationSuccessHandler;
import com.baeldung.security.web.RestAuthenticationEntryPoint;
import com.baeldung.web.error.CustomAccessDeniedHandler;
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.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
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.WebSecurityConfigurerAdapter;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler;

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
@ComponentScan("com.baeldung.security")
public class SecurityJavaConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private CustomAccessDeniedHandler accessDeniedHandler;

    @Autowired
    private RestAuthenticationEntryPoint restAuthenticationEntryPoint;

    @Autowired
    private MySavedRequestAwareAuthenticationSuccessHandler mySuccessHandler;

    private SimpleUrlAuthenticationFailureHandler myFailureHandler = new SimpleUrlAuthenticationFailureHandler();

    public SecurityJavaConfig() {
        super();
        SecurityContextHolder.setStrategyName(SecurityContextHolder.MODE_INHERITABLETHREADLOCAL);
    }

    @Override
    protected void configure(final AuthenticationManagerBuilder auth) throws Exception {
        auth.inMemoryAuthentication()
            .withUser("admin").password(encoder().encode("adminPass")).roles("ADMIN")
            .and()
            .withUser("user").password(encoder().encode("userPass")).roles("USER");
    }

    @Override
    protected void configure(final HttpSecurity http) throws Exception {
        http.csrf().disable()
            .authorizeRequests()
            .and()
            .exceptionHandling()
            .accessDeniedHandler(accessDeniedHandler)
            .authenticationEntryPoint(restAuthenticationEntryPoint)
            .and()
            .authorizeRequests()
            .antMatchers("/api/csrfAttacker*").permitAll()
            .antMatchers("/api/customer/**").permitAll()
            .antMatchers("/api/foos/**").authenticated()
            .antMatchers("/api/async/**").permitAll()
            .antMatchers("/api/admin/**").hasRole("ADMIN")
            .and()
            .formLogin()
            .successHandler(mySuccessHandler)
            .failureHandler(myFailureHandler)
            .and()
            .httpBasic()
            .and()
            .logout();
    }
    
    @Bean
    public PasswordEncoder encoder() {
        return new BCryptPasswordEncoder();
    }

}