package com.juick.api.configuration;

import com.juick.server.security.JuickAuthenticationEntryPoint;
import com.juick.service.UserService;
import com.juick.service.security.JuickUserDetailsService;
import com.juick.service.security.SimpleRememberMeServices;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.core.env.Environment;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
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.config.http.SessionCreationPolicy;
import org.springframework.security.web.authentication.RememberMeServices;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.CorsConfigurationSource;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;

import javax.inject.Inject;
import java.util.Arrays;
import java.util.concurrent.TimeUnit;

/**
 * Created by aalexeev on 11/21/16.
 */
@Configuration
@EnableWebSecurity(debug = true)
@PropertySource("classpath:juick.conf")
public class ApiSecurityConfig extends WebSecurityConfigurerAdapter {
    @Inject
    private Environment env;
    @Inject
    private UserService userService;

    ApiSecurityConfig() {
        super(true);
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                .antMatchers(HttpMethod.OPTIONS).permitAll()
                .anyRequest().hasRole("USER")
                .and().httpBasic().authenticationEntryPoint(getJuickAuthenticationEntryPoint())
                .and().anonymous()
                .and().cors().configurationSource(corsConfigurationSource())
                .and().servletApi()
                .and().sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                .and().exceptionHandling().authenticationEntryPoint(getJuickAuthenticationEntryPoint())
                .and()
                .rememberMe()
                .alwaysRemember(true)
                .tokenValiditySeconds((int) TimeUnit.DAYS.toSeconds(6 * 30))
                .rememberMeServices(rememberMeServices())
                .key(env.getProperty("auth_remember_me_key"))
                .and().authenticationProvider(authenticationProvider())
                .headers().defaultsDisabled().cacheControl();
    }

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

        authenticationProvider.setUserDetailsService(userDetailsService());

        return authenticationProvider;
    }

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

    @Bean
    public RememberMeServices rememberMeServices() throws Exception {
        return new SimpleRememberMeServices(env.getProperty("auth_remember_me_key"), userDetailsService(), userService, env);
    }

    @Bean
    public JuickAuthenticationEntryPoint getJuickAuthenticationEntryPoint() {
        return new JuickAuthenticationEntryPoint();
    }

    @Bean
    public CorsConfigurationSource corsConfigurationSource() {
        CorsConfiguration configuration = new CorsConfiguration();

        configuration.setAllowedOrigins(Arrays.asList("*"));
        configuration.setAllowedMethods(Arrays.asList("POST", "GET", "PUT", "OPTIONS", "DELETE"));
        configuration.setAllowedHeaders(Arrays.asList("*"));

        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", configuration);

        return source;
    }
}