// Fichier 1/2 : src/main/java/com/moscepa/config/SecurityConfig.java (Version Finale Corrigée)

package com.moscepa.config;

import com.moscepa.security.AuthEntryPointJwt;
import com.moscepa.security.AuthTokenFilter;
import com.moscepa.security.UserDetailsServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
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.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;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.CorsConfigurationSource;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;

import java.util.Arrays;
import java.util.List;

@Configuration
@EnableMethodSecurity
public class SecurityConfig {

    @Autowired
    private UserDetailsServiceImpl userDetailsService;

    @Autowired
    private AuthEntryPointJwt unauthorizedHandler;

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

    @Bean
    public DaoAuthenticationProvider authenticationProvider() {
        DaoAuthenticationProvider authProvider = new DaoAuthenticationProvider();
        authProvider.setUserDetailsService(userDetailsService);
        authProvider.setPasswordEncoder(passwordEncoder());
        return authProvider;
    }

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

    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }
    
    @Bean
    public SecurityFilterChain filterChain(HttpSecurity http ) throws Exception {
        http.cors(cors -> cors.configurationSource(corsConfigurationSource( )))
            .csrf(csrf -> csrf.disable())
            .exceptionHandling(exception -> exception.authenticationEntryPoint(unauthorizedHandler))
            .sessionManagement(session -> session.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
            .authorizeHttpRequests(authz -> authz
                .requestMatchers(HttpMethod.OPTIONS, "/**").permitAll()
                // Définir les routes PUBLIQUES
                .requestMatchers("/api/auth/**").permitAll()
                .requestMatchers("/api/permissions/**").permitAll() 
                .requestMatchers("/swagger-ui/**", "/api-docs/**", "/v3/api-docs/**", "/swagger-ui.html").permitAll()
                .requestMatchers(HttpMethod.POST, "/api/etudiants/inscrire").permitAll()
                .requestMatchers("/error").permitAll()
                

                // ====================================================================
                // === CORRECTION APPLIQUÉE ICI                                     ===
                // ====================================================================
                // On autorise l'accès public au dossier des fichiers uploadés.
                .requestMatchers("/uploads/**").permitAll()
                // Dans SecurityConfig.java - modifiez temporairement :
                .requestMatchers("/api/questionnaires/**").permitAll() // ← Ajoutez cette ligne
                // Pour TOUT LE RESTE, exiger une authentification.
                .anyRequest().authenticated()
            );

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

        return http.build( );
    }

   @Bean
public CorsConfigurationSource corsConfigurationSource() {
    CorsConfiguration configuration = new CorsConfiguration();
    // Ajoutez ici TOUTES les adresses qui hébergent votre Angular
    configuration.setAllowedOrigins(Arrays.asList(
  "http://localhost:4200", // Mode Dev
        "http://localhost:8081", // Votre mode XAMPP actuel
        "http://localhost"      // Port standard Apache
    ));
    configuration.setAllowedMethods(Arrays.asList("GET", "POST", "PUT", "DELETE", "OPTIONS"));
    configuration.setAllowedHeaders(List.of("*"));
    configuration.setAllowCredentials(true);
    configuration.setMaxAge(3600L);

    UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
    source.registerCorsConfiguration("/**", configuration);
    return source;
}

}