package com.example.proarea.config;

import com.example.proarea.enums.Roles;
import com.example.proarea.security.jwt.JwtAuthEntryPoint;
import com.example.proarea.security.jwt.JwtAuthTokenFilter;
import com.example.proarea.services.serviceimpl.UserDetailsServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
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.crypto.password.PasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

    private UserDetailsServiceImpl userDetailsService;

    private JwtAuthEntryPoint unauthorizedHandler;

    //swagger urls
    private static final String[] SWAGGER_RESOURCES = {"/v2/api-docs*", "/swagger-ui.html", "/webjars/springfox-swagger-ui/**", "/swagger-resources/**"};

    @Autowired
    public WebSecurityConfig(UserDetailsServiceImpl userDetailsService, JwtAuthEntryPoint unauthorizedHandler) {
        this.userDetailsService = userDetailsService;
        this.unauthorizedHandler = unauthorizedHandler;
    }

    @Bean
    public JwtAuthTokenFilter authenticationJwtTokenFilter() {
        return new JwtAuthTokenFilter();
    }

    @Override
    public void configure(AuthenticationManagerBuilder authenticationManagerBuilder) throws Exception {
        authenticationManagerBuilder
                .userDetailsService(userDetailsService)
                .passwordEncoder(passwordEncoder());
        authenticationManagerBuilder.inMemoryAuthentication()
                .withUser("admin")
                .password("admin")
                .roles(String.valueOf(Roles.ADMIN));
    }

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

    //in this method we set path that should avoid security in our case swagger
    @Override
    public void configure(WebSecurity web) throws Exception {
        web.ignoring().antMatchers(SWAGGER_RESOURCES);
    }

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

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.cors().and().csrf().disable().
                authorizeRequests()
                .antMatchers("/admin/ban/{login}").hasRole(String.valueOf(Roles.ADMIN))
                .antMatchers("/signin**",
                        "/signup**",
                        "/forgot-password**",
                        "/reset-password**").permitAll()
                .anyRequest().authenticated()
                .and()
                .exceptionHandling().authenticationEntryPoint(unauthorizedHandler).and()
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);

        http.addFilterBefore(authenticationJwtTokenFilter(), UsernamePasswordAuthenticationFilter.class);
    }
}