package cn.codesheep.springbt_security_jwt.config;

import cn.codesheep.springbt_security_jwt.filter.JwtTokenFilter;
import cn.codesheep.springbt_security_jwt.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
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.builders.WebSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

/**
 * @www.codesheep.cn
 * 20190312
 */
@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled=true)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private UserService userService;

    @Bean
    public JwtTokenFilter authenticationTokenFilterBean() throws Exception {
        return new JwtTokenFilter();
    }

    @Bean
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }

    @Override
    protected void configure( AuthenticationManagerBuilder auth ) throws Exception {
        auth.userDetailsService( userService ).passwordEncoder( new BCryptPasswordEncoder() );
    }

    @Override
    protected void configure( HttpSecurity httpSecurity ) throws Exception {

        httpSecurity.csrf().disable()
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and()
                .authorizeRequests()
                .antMatchers(HttpMethod.OPTIONS, "/**").permitAll()
                .antMatchers(HttpMethod.POST, "/authentication/**").permitAll()
                .antMatchers(HttpMethod.POST).authenticated()
                .antMatchers(HttpMethod.PUT).authenticated()
                .antMatchers(HttpMethod.DELETE).authenticated()
                .antMatchers(HttpMethod.GET).authenticated();

        httpSecurity
                .addFilterBefore(authenticationTokenFilterBean(), UsernamePasswordAuthenticationFilter.class);
        httpSecurity.headers().cacheControl();
    }

}