package com.ruoyi.web.controller.common;

import java.awt.image.BufferedImage;
import java.util.ArrayList;
import java.util.List;
import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.ruoyi.common.utils.ImgUpload;
import com.ruoyi.common.utils.uuid.IdUtils;
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.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import com.ruoyi.common.config.RuoYiConfig;
import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.file.FileUploadUtils;
import com.ruoyi.common.utils.file.FileUtils;
import com.ruoyi.framework.config.ServerConfig;

/**
 * 通用请求处理
 *
 * @author ruoyi
 */
@RestController
@RequestMapping("/common")
public class CommonController
{
    private static final Logger log = LoggerFactory.getLogger(CommonController.class);

    @Autowired
    private ServerConfig serverConfig;

    private static final String FILE_DELIMETER = ",";

    /**
     * 通用下载请求
     *
     * @param fileName 文件名称
     * @param delete 是否删除
     */
    @GetMapping("/download")
    public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request)
    {
        try
        {
            if (!FileUtils.checkAllowDownload(fileName))
            {
                throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 ", fileName));
            }
            String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
            String filePath = RuoYiConfig.getDownloadPath() + fileName;

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

    /**
     * 通用上传请求（单个）
     */
    // @PostMapping("/upload")
    // public AjaxResult uploadFile(MultipartFile file) throws Exception
    // {
    //     try
    //     {
    //         // 上传文件路径
    //         String filePath = RuoYiConfig.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("url", url);
    //         ajax.put("fileName", fileName);
    //         ajax.put("newFileName", FileUtils.getName(fileName));
    //         ajax.put("originalFilename", file.getOriginalFilename());
    //         return ajax;
    //     }
    //     catch (Exception e)
    //     {
    //         return AjaxResult.error(e.getMessage());
    //     }
    // }

    /**
     * 通用上传请求（多个）
     */
    @PostMapping("/uploads")
    public AjaxResult uploadFiles(List<MultipartFile> files) throws Exception
    {
        try
        {
            // 上传文件路径
            String filePath = RuoYiConfig.getUploadPath();
            List<String> urls = new ArrayList<String>();
            List<String> fileNames = new ArrayList<String>();
            List<String> newFileNames = new ArrayList<String>();
            List<String> originalFilenames = new ArrayList<String>();
            for (MultipartFile file : files)
            {
                // 上传并返回新文件名称
                String fileName = FileUploadUtils.upload(filePath, file);
                String url = serverConfig.getUrl() + fileName;
                urls.add(url);
                fileNames.add(fileName);
                newFileNames.add(FileUtils.getName(fileName));
                originalFilenames.add(file.getOriginalFilename());
            }
            AjaxResult ajax = AjaxResult.success();
            ajax.put("urls", StringUtils.join(urls, FILE_DELIMETER));
            ajax.put("fileNames", StringUtils.join(fileNames, FILE_DELIMETER));
            ajax.put("newFileNames", StringUtils.join(newFileNames, FILE_DELIMETER));
            ajax.put("originalFilenames", StringUtils.join(originalFilenames, FILE_DELIMETER));
            return ajax;
        }
        catch (Exception e)
        {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 本地资源通用下载
     */
    @GetMapping("/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 = RuoYiConfig.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);
        }
    }

    /**
     * 通用上传请求
     */
    @PostMapping("/upload")
    public AjaxResult uploadFile(MultipartFile file) throws Exception
    {
        String fileName = null;
        try
        {
            BufferedImage image = ImageIO.read(file.getInputStream());
            if (image != null) {//如果image=null 表示上传的不是图片格式
//			    System.out.println(image.getWidth());//获取图片宽度，单位px
//			    System.out.println(image.getHeight());//获取图片高度，单位px
                fileName = "IMG_" + image.getWidth() + "_" + image.getHeight() + "@";
            }else {
                fileName = "";
            }
            String imagePath = new ImgUpload().upload(file.getBytes(),
                    fileName);
            if (StringUtils.isBlank(imagePath)) {
                return  AjaxResult.error("上传失败");
            }
            AjaxResult ajax = AjaxResult.success();
            ajax.put("fileName", fileName);
            ajax.put("url", imagePath);
            return ajax;
        }
        catch (Exception e)
        {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 通用上传请求（上传文件）
     */
    @PostMapping("/fileUpload")
    public AjaxResult fileUpload(MultipartFile file) throws Exception
    {
        try
        {

            String fileName = null;
            BufferedImage image = ImageIO.read(file.getInputStream());
            if (image != null) {
                fileName = "IMG_"+ IdUtils.fastSimpleUUID();
            }else {
                fileName = "";
            }
            String name = file.getOriginalFilename();
            // 截取逗号之后的字符串
            int commaIndex = name.indexOf("."); // 获取逗号的索引
            String result = name.substring(commaIndex + 1); // 截取逗号之后的字符串

            String mime;
            switch (result) {
                case "doc":
                case "dot":
                    mime = "application/msword";
                    break;
                case "docx":
                    mime = "application/vnd.openxmlformats-officedocument.wordprocessingml.document";
                    break;
                case "xls":
                    mime = "application/vnd.ms-excel";
                    break;
                case "xlsx":
                    mime = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
                    break;
                case "ppt":
                    mime = "application/vnd.ms-powerpoint";
                    break;
                case "pptx":
                    mime = "application/vnd.openxmlformats-officedocument.presentationml.presentation";
                    break;
                case "pdf":
                    mime = "application/pdf";
                    break;
                default:
                    mime = "application/msword";
                    break;
            }


            String imagePath = new ImgUpload().uploadMime(file.getBytes(),
                    fileName, mime);
            if (StringUtils.isBlank(imagePath)) {
                return  AjaxResult.error("上传失败");
            }
            AjaxResult ajax = AjaxResult.success();
            ajax.put("url", imagePath);
            ajax.put("fileName", imagePath);
            ajax.put("newFileName", FileUtils.getName(fileName));
            ajax.put("originalFilename", file.getOriginalFilename());
            return ajax;
        }
        catch (Exception e)
        {
            return AjaxResult.error(e.getMessage());
        }
    }
}
