package com.xkcoding.upload.config;

import com.qiniu.common.Zone;
import com.qiniu.storage.BucketManager;
import com.qiniu.storage.UploadManager;
import com.qiniu.util.Auth;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.autoconfigure.web.servlet.MultipartProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.multipart.MultipartResolver;
import org.springframework.web.multipart.support.StandardServletMultipartResolver;
import org.springframework.web.servlet.DispatcherServlet;

import javax.servlet.MultipartConfigElement;
import javax.servlet.Servlet;

/**
 * <p>
 * 上传配置
 * </p>
 *
 * @author yangkai.shen
 * @date Created in 2018-10-23 14:09
 */
@Configuration
@ConditionalOnClass({Servlet.class, StandardServletMultipartResolver.class, MultipartConfigElement.class})
@ConditionalOnProperty(prefix = "spring.http.multipart", name = "enabled", matchIfMissing = true)
@EnableConfigurationProperties(MultipartProperties.class)
public class UploadConfig {
    @Value("${qiniu.accessKey}")
    private String accessKey;

    @Value("${qiniu.secretKey}")
    private String secretKey;

    private final MultipartProperties multipartProperties;

    @Autowired
    public UploadConfig(MultipartProperties multipartProperties) {
        this.multipartProperties = multipartProperties;
    }

    /**
     * 上传配置
     */
    @Bean
    @ConditionalOnMissingBean
    public MultipartConfigElement multipartConfigElement() {
        return this.multipartProperties.createMultipartConfig();
    }

    /**
     * 注册解析器
     */
    @Bean(name = DispatcherServlet.MULTIPART_RESOLVER_BEAN_NAME)
    @ConditionalOnMissingBean(MultipartResolver.class)
    public StandardServletMultipartResolver multipartResolver() {
        StandardServletMultipartResolver multipartResolver = new StandardServletMultipartResolver();
        multipartResolver.setResolveLazily(this.multipartProperties.isResolveLazily());
        return multipartResolver;
    }

    /**
     * 华东机房
     */
    @Bean
    public com.qiniu.storage.Configuration qiniuConfig() {
        return new com.qiniu.storage.Configuration(Zone.zone0());
    }

    /**
     * 构建一个七牛上传工具实例
     */
    @Bean
    public UploadManager uploadManager() {
        return new UploadManager(qiniuConfig());
    }

    /**
     * 认证信息实例
     */
    @Bean
    public Auth auth() {
        return Auth.create(accessKey, secretKey);
    }

    /**
     * 构建七牛空间管理实例
     */
    @Bean
    public BucketManager bucketManager() {
        return new BucketManager(auth(), qiniuConfig());
    }
}
