package com.mes.config;
import com.google.common.collect.Lists;
import io.swagger.annotations.ApiOperation;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.ParameterBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.schema.ModelRef;
import springfox.documentation.service.*;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spi.service.contexts.SecurityContext;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import static springfox.documentation.builders.PathSelectors.regex;

@Configuration
@EnableSwagger2     //开启Swagger2
public class SwaggerConfig {

    //配置了Swagger的Docket的bean实例
    @Bean
    public Docket docket(){
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                //加了ApiOperation注解的类，才生成接口文档
                .apis(RequestHandlerSelectors.basePackage("com.mes.controller"))
                //包下的类，才生成接口文档
                .paths(PathSelectors.any())
                .build()
                .securitySchemes(securitySchemes())
                .securityContexts(securityContexts());

    }


    /**
     * 配置认证模式
     * @return
     */
    private List<ApiKey> securitySchemes() {
        List<ApiKey> arrayList = new ArrayList<>();
        arrayList.add( new ApiKey("token", "token", "header"));
        return arrayList;
    }

    /**
     * 配置认证上下文
     */
    private List<SecurityContext> securityContexts() {
        List<SecurityContext> securityContexts = new ArrayList<>();
        securityContexts.add(SecurityContext.builder().securityReferences(defaultAuth())
                //过滤要验证的路径
                .forPaths(PathSelectors.regex("^(?!auth).*$"))
                .build());
        return securityContexts;
    }

    private List<SecurityReference> defaultAuth() {
        AuthorizationScope authorizationScope = new AuthorizationScope("global", "accessEverything");
        AuthorizationScope[] authorizationScopes = new AuthorizationScope[1];
        authorizationScopes[0] = authorizationScope;
        List<SecurityReference> securityReferences = new ArrayList<>();
        //验证增加（有许多教程说明中这个地方是Authorization,导致不能带入全局token，因为securitySchemes()方法中header写入token，所以这个地方我改为token就可以了）
        securityReferences.add(new SecurityReference("token", authorizationScopes));
        return securityReferences;
    }
    //配置Swagger信息 = apiInfo
    private ApiInfo apiInfo(){
        //作者信息
        Contact contact = new Contact("郭yj", "", "");
        return new ApiInfo(
                "NorthGlass-ERP 接口文档",       //title
                "郭yj",        //description
                "1.0",                          //version
                "urn:tos",
                contact,
                "Apache 2.0",
                "http://www.apache.org/licenses/LICENSE-2.0",
                new ArrayList());
    }
}