package com.sn.sowsysrestapi.domain.security.config;

import com.sn.sowsysrestapi.domain.security.dao.UserDao;
import com.sn.sowsysrestapi.domain.security.jwt.JwtAuthFilter;
import lombok.RequiredArgsConstructor;
import org.springframework.context.annotation.Bean;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.config.annotation.authentication.configuration.AuthenticationConfiguration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

@EnableWebSecurity
@RequiredArgsConstructor
public class SecurityConfig {

    private final JwtAuthFilter jwtAuthFilter;
    private final UserDao userDao;

    @Bean
    public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {

        http
//                .cors().disable()
                .csrf().disable()
                .authorizeRequests()
                    .antMatchers("/api/auth/**", "/api/users/**").permitAll()
                    .anyRequest().authenticated()
                .and()
                    .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                .and()
                    .authenticationProvider(authenticationProvider())
                    .addFilterBefore(jwtAuthFilter, UsernamePasswordAuthenticationFilter.class);

        return http.build();

    }

    @Bean
    public AuthenticationProvider authenticationProvider() {

        final DaoAuthenticationProvider authenticationProvider = new DaoAuthenticationProvider();
        authenticationProvider.setUserDetailsService(userDetailsService());
        authenticationProvider.setPasswordEncoder(passwordEncoder());

        return authenticationProvider;

    }

    @Bean
    public AuthenticationManager authenticationManager(AuthenticationConfiguration config) throws Exception {

        return config.getAuthenticationManager();

    }

    @Bean
    public PasswordEncoder passwordEncoder() {
        //return NoOpPasswordEncoder.getInstance(); // To not encrypt the password. Use it only on development phase.
        return new BCryptPasswordEncoder();
    }

    @Bean
    public UserDetailsService userDetailsService() {

        return new UserDetailsService() {
            @Override
            public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
                return userDao.findUserByUsername(username);
            }
        };

    }

}