package com.kpaudel.config;

import com.kpaudel.security.JwtAuthenticationFilter;
import com.kpaudel.security.JwtUtil;
import com.kpaudel.security.UserDetailsServiceImpl;
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.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

@Configuration
@EnableWebSecurity
public class SecurityConfig {

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

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

    @Bean
    public SecurityFilterChain filterChain(HttpSecurity http, JwtAuthenticationFilter jwtAuthenticationFilter) throws Exception {
        http.csrf(csrf -> csrf.disable())
                .sessionManagement(session -> session.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
                .authorizeHttpRequests(authz -> authz
                        .requestMatchers("/api/auth/**").permitAll()
                        .requestMatchers("/api/**").authenticated()
                        .anyRequest().permitAll()
                )
                .addFilterBefore(jwtAuthenticationFilter, UsernamePasswordAuthenticationFilter.class);

        return http.build();
    }

    @Bean
    public JwtAuthenticationFilter jwtAuthenticationFilter(JwtUtil jwtUtil, UserDetailsServiceImpl userDetailsService) {
        return new JwtAuthenticationFilter(jwtUtil, userDetailsService);
    }
}