/*
 * Copyright 2017 S. Koulouzis, Wang Junchao, Huan Zhou, Yang Hu 
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package nl.uva.sne.drip.api.conf;

import nl.uva.sne.drip.api.auth.MyBasicAuthenticationEntryPoint;
import nl.uva.sne.drip.api.auth.AuthFilter;
import nl.uva.sne.drip.api.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
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.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.authentication.www.BasicAuthenticationFilter;

/**
 *
 * @author S. Koulouzis
 */
@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(jsr250Enabled = true, prePostEnabled = true)
//@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    UserService userService;

    @Autowired
    private MyBasicAuthenticationEntryPoint authenticationEntryPoint;

    @Autowired
    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userService).passwordEncoder(passwordEncoder());
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                .csrf().disable()
                .authorizeRequests()
                .antMatchers("/user/*").hasRole("USER")
                .and()
                .authorizeRequests()
                .antMatchers("/manager/*").hasRole("ADMIN")
                .and()
                .authorizeRequests()
                .antMatchers("/monitoring/*").hasRole("ADMIN")
                .and()                
                .formLogin()
                .and()
                .httpBasic()
                .authenticationEntryPoint(authenticationEntryPoint);

        http.addFilterAfter(new AuthFilter(), BasicAuthenticationFilter.class);

    }

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