package <%= packageName %>.config;

import <%= packageName %>.security.JwtAuthFilter;
import lombok.RequiredArgsConstructor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
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.method.configuration.EnableMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
import org.springframework.security.config.http.SessionCreationPolicy;
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.web.SecurityFilterChain;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

@Configuration
@EnableWebSecurity
@EnableMethodSecurity
@RequiredArgsConstructor
public class SecurityConfig {

    private final JwtAuthFilter jwtAuthFilter;
    private final UserDetailsService userDetailsService;

    @Bean
    public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
        http
            .cors(org.springframework.security.config.Customizer.withDefaults())
            .csrf(AbstractHttpConfigurer::disable)
            .authorizeHttpRequests(authorize -> authorize
                // Public auth endpoints
                .requestMatchers("/api/v1/auth/**").permitAll()
                // Public home / static assets (individual pages + assets)
                .requestMatchers("/", "/index.html", "/login.html", "/register.html").permitAll()
                .requestMatchers("/dashboard.html", "/profile.html", "/admin.html").permitAll()
                .requestMatchers("/assets/**", "/css/**", "/js/**", "/favicon.ico").permitAll()
                <%_ if (hasSwagger) { _%>
                .requestMatchers("/v3/api-docs/**", "/swagger-ui/**", "/swagger-ui.html").permitAll()
                <%_ } _%>
                .requestMatchers("/actuator/**").permitAll()
                // Admin endpoints — ROLE_ADMIN enforced via @PreAuthorize too
                .requestMatchers("/api/v1/admin/**").hasAuthority("ROLE_ADMIN")
                .anyRequest().authenticated()
            )
            .sessionManagement(session -> session
                .sessionCreationPolicy(SessionCreationPolicy.STATELESS)
            )
            .authenticationProvider(authenticationProvider())
            .addFilterBefore(jwtAuthFilter, UsernamePasswordAuthenticationFilter.class);

        return http.build();
    }

    @Bean
    public AuthenticationProvider authenticationProvider() {
        // Spring Security 6.x: UserDetailsService must be passed to the constructor
        DaoAuthenticationProvider authProvider = new DaoAuthenticationProvider(userDetailsService);
        authProvider.setPasswordEncoder(passwordEncoder());
        return authProvider;
    }

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

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