/*
 * Copyright (C) 2008-2017, Juick
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.juick.www.configuration;

import com.juick.service.security.HashParamAuthenticationFilter;
import com.juick.service.security.entities.JuickUser;
import com.juick.service.UserService;
import com.juick.service.security.JuickUserDetailsService;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
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.core.userdetails.UserDetailsService;
import org.springframework.security.web.authentication.RememberMeServices;
import org.springframework.security.web.authentication.rememberme.TokenBasedRememberMeServices;
import org.springframework.security.web.authentication.www.BasicAuthenticationFilter;

import javax.annotation.Resource;

/**
 * Created by aalexeev on 11/21/16.
 */
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    @Value("${auth_remember_me_key}")
    private String rememberMeKey;
    @Value("${web_domain:juick.com}")
    private String webDomain;
    @Resource
    private UserService userService;

    private final String COOKIE_NAME = "juick-remember-me";

    @Bean("userDetailsService")
    @Override
    public UserDetailsService userDetailsServiceBean() throws Exception {
        return super.userDetailsServiceBean();
    }

    @Override
    public UserDetailsService userDetailsService() {
        return new JuickUserDetailsService(userService);
    }

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

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.addFilterAfter(hashParamAuthenticationFilter(), BasicAuthenticationFilter.class);
        http
                .authorizeRequests()
                .antMatchers("/settings", "/pm/**", "/**/bl", "/_twitter").authenticated()
                .anyRequest().permitAll()
                .and()
                .anonymous().principal(JuickUser.ANONYMOUS_USER).authorities(JuickUser.ANONYMOUS_AUTHORITY)
                .and()
                .sessionManagement().invalidSessionUrl("/")
                .and()
                .logout()
                .invalidateHttpSession(true)
                .logoutUrl("/logout")
                .logoutSuccessUrl("/login?logout")
                .deleteCookies("hash", COOKIE_NAME)
                .and()
                .formLogin()
                .loginPage("/login")
                .permitAll()
                .defaultSuccessUrl("/")
                .loginProcessingUrl("/login")
                .usernameParameter("username")
                .passwordParameter("password")
                .failureUrl("/login?error=1")
                .and()
                .rememberMe()
                .rememberMeCookieDomain(webDomain).key(rememberMeKey)
                .rememberMeServices(rememberMeServices())
                .and()
                .csrf().disable()
                .authenticationProvider(authenticationProvider())
                .headers().defaultsDisabled().cacheControl();
    }

    @Bean
    public DaoAuthenticationProvider authenticationProvider() throws Exception {
        DaoAuthenticationProvider authenticationProvider = new DaoAuthenticationProvider();

        authenticationProvider.setUserDetailsService(userDetailsService());

        return authenticationProvider;
    }

    @Bean
    public HashParamAuthenticationFilter hashParamAuthenticationFilter() throws Exception {
        return new HashParamAuthenticationFilter(userService, rememberMeServices());
    }

    @Bean
    public RememberMeServices rememberMeServices() throws Exception {
        TokenBasedRememberMeServices services = new TokenBasedRememberMeServices(
                rememberMeKey, userDetailsService());

        services.setCookieName(COOKIE_NAME);
        services.setCookieDomain(webDomain);
        services.setAlwaysRemember(true);
        services.setTokenValiditySeconds(6 * 30 * 24 * 3600);
        services.setUseSecureCookie(false); // TODO set true if https is supports

        return services;
    }

    @Override
    public void configure(WebSecurity web) throws Exception {
        web.debug(false);
        web.ignoring().antMatchers("/style.css*", "/scripts.js*");
    }
}