package com.agendaestudantil.configuracao;

import com.agendaestudantil.filtro.FiltroJwt;
import org.springframework.beans.factory.annotation.Value;
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;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.CorsConfigurationSource;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;

import java.util.List;

@Configuration
@EnableWebSecurity
public class ConfiguracaoSeguranca {

    private final FiltroJwt filtroJwt;
    private final String corsAllowedOrigins;

    public ConfiguracaoSeguranca(FiltroJwt filtroJwt, @Value("${cors.allowed.origins}") String corsAllowedOrigins) {
        this.filtroJwt = filtroJwt;
        this.corsAllowedOrigins = corsAllowedOrigins;
    }

    @Bean
    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
        http.csrf(csrf -> csrf.disable())
                .cors(cors -> cors.configurationSource(corsConfigurationSource()))
                .authorizeHttpRequests(auth -> auth
                        .requestMatchers(
                                "/", "/index.html", "/login.html", "/cadastro.html",
                                "/favicon.ico", "/imagens/**",
                                "/*.css", "/*.js", "/*.ico", "/*.png",
                                "/api/estudantes/cadastro", "/api/estudantes/login",
                                "/swagger-ui/**", "/v3/api-docs/**")
                        .permitAll()
                        .anyRequest().authenticated())
                .sessionManagement(session -> session
                        .sessionCreationPolicy(SessionCreationPolicy.STATELESS))
                .addFilterBefore(filtroJwt, UsernamePasswordAuthenticationFilter.class);

        return http.build();
    }

    @Bean
    public CorsConfigurationSource corsConfigurationSource() {
        CorsConfiguration configuration = new CorsConfiguration();
        configuration.setAllowedOrigins(List.of(corsAllowedOrigins.split(",")));
        configuration.setAllowedMethods(List.of("GET", "POST", "PUT", "DELETE", "OPTIONS", "PATCH"));
        configuration.setAllowedHeaders(List.of("*"));
        configuration.setExposedHeaders(List.of("Authorization"));
        configuration.setAllowCredentials(true);
        configuration.setMaxAge(3600L);
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", configuration);
        return source;
    }

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

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