package com.doumee.config.swagger;

import com.github.xiaoymin.knife4j.spring.annotations.EnableKnife4j;
import com.google.common.base.Function;
import com.google.common.base.Optional;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.util.UriComponentsBuilder;
import springfox.documentation.PathProvider;
import springfox.documentation.RequestHandler;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.ParameterBuilder;
import springfox.documentation.service.Parameter;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.oas.annotations.EnableOpenApi;
import springfox.documentation.schema.ModelRef;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.paths.DefaultPathProvider;
import springfox.documentation.spring.web.paths.Paths;
import springfox.documentation.spring.web.plugins.Docket;

import java.util.ArrayList;
import java.util.List;
import java.util.function.Predicate;

import static springfox.documentation.spring.web.paths.Paths.removeAdjacentForwardSlashes;

/**
 * Swagger配置
 * @author Eva.Caesar Liu
 * @date 2022/03/11 10:24
 */
@Configuration
@EnableOpenApi
@EnableKnife4j
public class SwaggerConfig {

    @Value("${swagger.host}")
    private String host;
    @Value("${swagger.context-path}")
    private String contextPath;

    @Value("${swagger.title:接口文档}")
    private String title;

    @Value("${swagger.description}")
    private String description;

    @Value("${project.version}")
    private String version;

    @Bean
    public ApiInfo getApiInfo() {
        return new ApiInfoBuilder()
                .title(title)
                .description(description)
                .version(version)
                .build();
    }
    @Bean
    public Docket getDocket3() {
        Docket docket = new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(this.getApiInfo()).groupName("【安泰访客系统交互接口openapi】")
                .host(host)
                .select()
                .apis( basePackage("com.doumee.api.web"))
                // 设置需要被扫描的类，这里设置为添加了@Api注解的类
//                .apis(RequestHandlerSelectors.withClassAnnotation(Api.class))
                .paths(PathSelectors.any())
                .build()
                .globalOperationParameters(this.getParameterList());
                 docket.pathProvider(new DefaultPathProvider(){
                     @Override
                     public String getOperationPath(String operationPath) {
                         return contextPath+super.getOperationPath(operationPath);
                     }
                 }) ;
        return docket;

    }


    private List<Parameter> getParameterList() {
        ParameterBuilder tokenPar = new ParameterBuilder();
        List<Parameter> pars = new ArrayList<>();
        tokenPar.name("token").description("令牌").modelRef(new ModelRef("string")).defaultValue("设置token默认值").modelRef(new ModelRef("string")).parameterType("header").required(false).build();
        pars.add(tokenPar.build());
        return  pars;
    }

 /*   @Bean
    public Docket getDocket1() {
        return new Docket(DocumentationType.SWAGGER_2)
            .apiInfo(this.getApiInfo()).groupName("【公共接口API】")
            .host(host)
            .select()
            .apis( basePackage("com.doumee.api.common"))
            // 设置需要被扫描的类，这里设置为添加了@Api注解的类
//                .apis(RequestHandlerSelectors.withClassAnnotation(Api.class))
            .paths(PathSelectors.any())
            .build();
    }*/
    /**
     * 重写basePackage方法，使能够实现多包访问，复制贴上去
     * @author  teavamc
     * @date 2019/1/26
     * @return com.google.common.base.Predicate<springfox.documentation.RequestHandler>
     */
    public static Predicate<RequestHandler> basePackage(String basePackage) {
        return input -> declaringClass(input).transform(handlerPackage(basePackage)).or(true);
    }

    private static Function<Class<?>, Boolean> handlerPackage(String basePackage)     {
        return input -> {
            // 循环判断匹配
            for (String strPackage : basePackage.split(";")) {
                boolean isMatch = input.getPackage().getName().startsWith(strPackage);
                if (isMatch) {
                    return true;
                }
            }
            return false;
        };
    }

    private static Optional<? extends Class<?>> declaringClass(RequestHandler input) {
        return Optional.fromNullable(input.declaringClass());
    }
}