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package com.juick.api.configuration;

import com.juick.server.security.JuickAuthenticationEntryPoint;
import com.juick.server.security.JuickAuthenticationProvider;
import com.juick.server.security.entities.JuickUser;
import com.juick.service.UserService;
import org.apache.commons.lang3.StringUtils;
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.config.annotation.authentication.builders.AuthenticationManagerBuilder;
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.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;

import javax.inject.Inject;

/**
 * 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("/home").hasRole("USER")
                .antMatchers(HttpMethod.OPTIONS).permitAll()
                .and().httpBasic().authenticationEntryPoint(getBasicAuthEntryPoint())
                .and().sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                .and().exceptionHandling().authenticationEntryPoint(getBasicAuthEntryPoint())
                .and().authenticationProvider(new JuickAuthenticationProvider());
    }

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

    @Bean("userDetailsService")
    @Override
    public UserDetailsService userDetailsServiceBean() throws Exception {
        return username -> {
            if (StringUtils.isBlank(username))
                throw new UsernameNotFoundException("Invalid user name " + username);

            com.juick.User user = userService.getUserByName(username);

            if (user != null)
                return new JuickUser(user);

            throw new UsernameNotFoundException("The username " + username + " is not found");
        };
    }
}