package com.youlai.boot.config;

import cn.hutool.captcha.generator.CodeGenerator;
import cn.hutool.core.collection.CollectionUtil;
import com.youlai.boot.common.constant.SecurityConstants;
import com.youlai.boot.config.property.SecurityProperties;
import com.youlai.boot.core.filter.RateLimiterFilter;
import com.youlai.boot.core.security.exception.MyAccessDeniedHandler;
import com.youlai.boot.core.security.exception.MyAuthenticationEntryPoint;
import com.youlai.boot.core.security.filter.JwtValidationFilter;
import com.youlai.boot.core.security.filter.CaptchaValidationFilter;
import com.youlai.boot.shared.auth.service.impl.JwtTokenService;
import com.youlai.boot.system.service.ConfigService;
import lombok.RequiredArgsConstructor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.security.authentication.AuthenticationManager;
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.configuration.WebSecurityCustomizer;
import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
import org.springframework.security.config.annotation.web.configurers.HeadersConfigurer;
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;

/**
 * Spring Security 权限配置
 *
 * @author Ray
 * @since 2023/2/17
 */
@Configuration
@EnableWebSecurity
@EnableMethodSecurity
@RequiredArgsConstructor
public class SecurityConfig {

    private final MyAuthenticationEntryPoint authenticationEntryPoint;
    private final MyAccessDeniedHandler accessDeniedHandler;
    private final RedisTemplate<String, Object> redisTemplate;
    private final CodeGenerator codeGenerator;
    private final SecurityProperties securityProperties;
    private final ConfigService configService;
    private final JwtTokenService jwtTokenService;

    @Bean
    public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
        http

                .authorizeHttpRequests(requestMatcherRegistry ->
                        requestMatcherRegistry
                                .requestMatchers(
                                        SecurityConstants.LOGIN_PATH,
                                        SecurityConstants.WECHAT_LOGIN_PATH)
                                .permitAll()
                                .anyRequest().authenticated()
                )
                .exceptionHandling(httpSecurityExceptionHandlingConfigurer ->
                        httpSecurityExceptionHandlingConfigurer
                                .authenticationEntryPoint(authenticationEntryPoint)
                                .accessDeniedHandler(accessDeniedHandler)
                )
                .sessionManagement(configurer -> configurer.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
                .csrf(AbstractHttpConfigurer::disable)
                .headers(headers -> headers.frameOptions(HeadersConfigurer.FrameOptionsConfig::disable))

        ;
        // 限流过滤器
        http.addFilterBefore(new RateLimiterFilter(redisTemplate, configService), UsernamePasswordAuthenticationFilter.class);
        // 验证码校验过滤器
        http.addFilterBefore(new CaptchaValidationFilter(redisTemplate, codeGenerator), UsernamePasswordAuthenticationFilter.class);
        // JWT 校验过滤器
        http.addFilterBefore(new JwtValidationFilter(jwtTokenService), UsernamePasswordAuthenticationFilter.class);

        return http.build();
    }

    /**
     * 不走过滤器链的放行配置
     */
    @Bean
    public WebSecurityCustomizer webSecurityCustomizer() {
        return (web) -> {
            if (CollectionUtil.isNotEmpty(securityProperties.getIgnoreUrls())) {
                web.ignoring().requestMatchers(securityProperties.getIgnoreUrls().toArray(new String[0]));
            }
        };
    }

    /**
     * 密码编码器
     */
    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }

    /**
     * AuthenticationManager 手动注入
     *
     * @param authenticationConfiguration 认证配置
     */
    @Bean
    public AuthenticationManager authenticationManager(AuthenticationConfiguration authenticationConfiguration) throws Exception {
        return authenticationConfiguration.getAuthenticationManager();
    }

}