package com.example.security;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.config.Customizer;
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;

@Configuration(proxyBeanMethods = false)
@EnableMethodSecurity
public class SecurityConfiguration {

    @Bean
    SecurityFilterChain apiSecurity(HttpSecurity http) throws Exception {
        http
            .csrf(csrf -> csrf.disable())
            .sessionManagement(session -> session.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
            .authorizeHttpRequests(auth -> auth
                .requestMatchers(HttpMethod.GET, "/public/**").permitAll()
                .requestMatchers("/admin/**").hasRole("ADMIN")
                .anyRequest().authenticated()
            )
            .httpBasic(Customizer.withDefaults());

        return http.build();
    }

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

// Example deeper authorization in a service layer:
// @PreAuthorize("hasRole('ADMIN') or @ownership.canRead(#documentId, authentication)")
// public DocumentDto getDocument(UUID documentId) { ... }