package fr.eni.demo.security;

import fr.eni.demo.bll.JwtService;
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.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.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.provisioning.InMemoryUserDetailsManager;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

@Configuration
@EnableWebSecurity
public class SecurityConfig {

    private final JwtService jwtService;

    public SecurityConfig(JwtService jwtService) {
        this.jwtService = jwtService;
    }

    @Bean
    public SecurityFilterChain filterChain(HttpSecurity http, UserDetailsService userDetailsService) throws Exception {

        JwtAuthFilter jwtFilter = new JwtAuthFilter(jwtService, userDetailsService);

        http
                .authorizeHttpRequests(auth -> auth
                        .requestMatchers("/auth/**").permitAll()
                        .anyRequest().authenticated()
                )
                .sessionManagement(sess -> sess.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
                .addFilterBefore(jwtFilter, UsernamePasswordAuthenticationFilter.class);

        return http.build();
    }

    @Bean
    public AuthenticationManager authenticationManager(AuthenticationConfiguration config) throws Exception {
        return config.getAuthenticationManager();
    }

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

    @Bean
    public UserDetailsService userDetailsService(PasswordEncoder encoder) {
        UserDetails user = User.builder()
                .username("user")
                .password(encoder.encode("password"))
                .roles("USER")
                .build();

        return new InMemoryUserDetailsManager(user);
    }

}