package com.fs.store.controller.common;

import com.fs.store.vo.WangUploadVO;
import com.fs.common.config.FSConfig;
import com.fs.common.constant.Constants;
import com.fs.common.core.domain.AjaxResult;
import com.fs.common.core.domain.R;
import com.fs.common.exception.file.OssException;
import com.fs.common.utils.security.OssUploadSecurityUtils;
import com.fs.common.utils.StringUtils;
import com.fs.common.utils.file.FileUploadUtils;
import com.fs.common.utils.file.FileUtils;
import com.fs.framework.config.ServerConfig;
import com.fs.system.oss.CloudStorageService;
import com.fs.system.oss.OSSFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.ArrayList;
import java.util.List;

/**
 * 通用请求处理
 * 

 */
@RestController
public class CommonController
{


    private static final Logger log = LoggerFactory.getLogger(CommonController.class);

    @Autowired
    private ServerConfig serverConfig;

    /**
     * 通用下载请求
     * 
     * @param fileName 文件名称
     * @param delete 是否删除
     */
    @GetMapping("common/download")
    public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request)
    {
        try
        {
            if (!FileUtils.checkAllowDownloadFileName(fileName))
            {
                throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 ", fileName));
            }
            // 防御性取 basename，避免异常拼接跳出下载目录
            String safeFileName = StringUtils.substringAfterLast(fileName.replace('\\', '/'), "/");
            if (StringUtils.isEmpty(safeFileName))
            {
                safeFileName = fileName;
            }
            String realFileName = System.currentTimeMillis() + safeFileName.substring(safeFileName.indexOf("_") + 1);
            String filePath = FSConfig.getDownloadPath() + safeFileName;

            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, realFileName);
            FileUtils.writeBytes(filePath, response.getOutputStream());
            if (Boolean.TRUE.equals(delete))
            {
                FileUtils.deleteFile(filePath);
            }
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }

    /**
     * 通用上传请求
     */
    @PostMapping("/common/upload")
    public AjaxResult uploadFile(MultipartFile file) throws Exception
    {
        try
        {
            // 上传文件路径
            String filePath = FSConfig.getUploadPath();
            // 上传并返回新文件名称
            String fileName = FileUploadUtils.upload(filePath, file);
            String url = serverConfig.getUrl() + fileName;
            AjaxResult ajax = AjaxResult.success();
            ajax.put("fileName", fileName);
            ajax.put("url", url);
            return ajax;
        } catch (Exception e) {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 本地资源通用下载
     */
    @GetMapping("/common/download/resource")
    public void resourceDownload(String resource, HttpServletRequest request, HttpServletResponse response)
            throws Exception
    {
        try
        {
            if (!FileUtils.checkAllowDownload(resource))
            {
                throw new Exception(StringUtils.format("资源文件({})非法，不允许下载。 ", resource));
            }
            // 本地资源路径
            String localPath = FSConfig.getProfile();
            // 数据库资源地址
            String downloadPath = localPath + StringUtils.substringAfter(resource, Constants.RESOURCE_PREFIX);
            // 下载名称
            String downloadName = StringUtils.substringAfterLast(downloadPath, "/");
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, downloadName);
            FileUtils.writeBytes(downloadPath, response.getOutputStream());
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }

    @PostMapping("common/uploadOSS")
    public R uploadOSS(@RequestParam("file") MultipartFile file) throws Exception
    {
        if (file.isEmpty())
        {
            throw new OssException("上传文件不能为空");
        }
        // 上传文件
        String suffix = OssUploadSecurityUtils.validateAndGetDotSuffix(file);
        CloudStorageService storage = OSSFactory.build();
        String url = storage.uploadSuffix(file.getBytes(), suffix);
        return R.ok().put("url",url);
    }
    @PostMapping("/common/uploadWang")
    public WangUploadVO uploadWang(@RequestParam(value = "fileName", required = false) MultipartFile file) throws Exception
    {
        WangUploadVO vo=new WangUploadVO();
        try
        {
            if (file.isEmpty())
            {
                throw new OssException("上传文件不能为空");
            }
            // 上传文件
            String suffix = OssUploadSecurityUtils.validateAndGetDotSuffix(file);
        CloudStorageService storage = OSSFactory.build();
        String url = storage.uploadSuffix(file.getBytes(), suffix);
            vo.setErrno(0);
            List<WangUploadVO.WangUploadItem> items=new ArrayList<>();
            WangUploadVO.WangUploadItem item=new WangUploadVO.WangUploadItem();
            item.setUrl(url);
            items.add(item);
            vo.setData(items);
            return vo;
        }
        catch (Exception e)
        {
            vo.setErrno(-1);
            return vo;
        }
    }



}
