package com.ruoyi.web.controller.common;

import com.alibaba.fastjson.JSONObject;
import com.ruoyi.common.config.RuoYiConfig;
import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.common.utils.QRCodeUtils;
import com.ruoyi.common.utils.SecurityUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.file.FileUploadUtils;
import com.ruoyi.common.utils.file.FileUtils;
import com.ruoyi.common.utils.file.ImageUtils;
import com.ruoyi.framework.config.ServerConfig;
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 javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;

/**
 * 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();
            String thumbnailPath = "";
            // 上传并返回新文件名称
            String fileName = FileUploadUtils.upload(filePath, file);
            String url = serverConfig.getUrl() + fileName;
            String fileType = FileUtils.getFileType(file);
            if ("video".equalsIgnoreCase(fileType)) {
                thumbnailPath = fileName.replace("/profile", RuoYiConfig.getProfile());
                int dotIndex = thumbnailPath.lastIndexOf(".");
                if (dotIndex != -1) {
                    thumbnailPath = thumbnailPath.substring(0, dotIndex) + ".jpg";
                } else {
                    thumbnailPath = thumbnailPath + ".jpg";  // 如果没有后缀，直接加 .jpg
                }
                FileUtils.screenShots(fileName.replace("/profile", RuoYiConfig.getProfile()), thumbnailPath, "00:00:01");
            }

            if ("image".equalsIgnoreCase(fileType)) {
                //获取用户名
                String username = SecurityUtils.getUsername();
                // 原始文件
                if (fileName.contains("/profile/upload")) {
                    fileName = fileName.replace("/profile/upload", "");
                }

                File sourceFile = new File(filePath + fileName);
                //图片添加水印
                String watermarkFileName = "watermark_" + fileName;
                File destFile = new File(filePath + fileName);
                // 加水印
                ImageUtils.addWatermark(sourceFile, destFile, "@" + username, "次元时代-ACG爱好者社区");
                fileName = watermarkFileName;
            }

            AjaxResult ajax = AjaxResult.success();
            ajax.put("url", url);
            ajax.put("fileName", fileName);
            ajax.put("newFileName", FileUtils.getName(fileName));
            ajax.put("originalFilename", file.getOriginalFilename());
            ajax.put("fileType", fileType);
            ajax.put("thumbnailPath", thumbnailPath);
            return ajax;
        } catch (Exception e) {
            return AjaxResult.error(e.getMessage());
        }
    }

//    /**
//     * 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();
//            String thumbnailPath = "";
//            // 上传并返回新文件名称
//            String fileName = OssUtils.uploadMultipartFile(file);
//            System.out.println(fileName);
//            String url = OssUtils.getOssFilePath(fileName);
//            String fileType = FileUtils.getFileType(file);
//            if ("video".equalsIgnoreCase(fileType)) {
//                thumbnailPath = fileName;
//                int dotIndex = thumbnailPath.lastIndexOf(".");
//                if (dotIndex != -1) {
//                    thumbnailPath = thumbnailPath.substring(0, dotIndex) + ".jpg";
//                } else {
//                    thumbnailPath = thumbnailPath + ".jpg";  // 如果没有后缀，直接加 .jpg
//                }
//                FileUtils.screenShots(fileName.replace("/profile", RuoYiConfig.getProfile()), thumbnailPath, "00:00:01");
//            }
//            AjaxResult ajax = AjaxResult.success();
//            ajax.put("url", url);
//            ajax.put("fileName", fileName);
//            ajax.put("newFileName", FileUtils.getName(fileName));
//            ajax.put("originalFilename", file.getOriginalFilename());
//            ajax.put("fileType", fileType);
//            ajax.put("thumbnailPath", thumbnailPath);
//            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);
        }
    }

    /**
     * 生成二维码
     *
     * @param
     * @return
     */
    @GetMapping("/loginUserQRCode")
    public AjaxResult generateAndUploadQRCode() {
        String fileName = "";
        try {
            Long userId = SecurityUtils.getLoginUser().getUser().getUserId();
            JSONObject userIdObj = new JSONObject();
            userIdObj.put("userId", userId);
            // 1. 生成临时二维码图片
            fileName = "qrcode_" + userId + ".png";
            Path tempFile = Paths.get(System.getProperty("java.io.tmpdir"), fileName);
            QRCodeUtils.generateQRCode(userIdObj.toJSONString(), tempFile, 300, 300);

            // 2. 转为 MultipartFile 格式，便于调用 RuoYi 的上传接口
            File file = tempFile.toFile();
            MultipartFile multipartFile = FileUtils.convertFileToMultipartFile(file);

            // 3. 使用 RuoYi 的文件上传工具进行上传
            String uploadPath = FileUploadUtils.upload(RuoYiConfig.getUploadPath(), multipartFile);

            // 4. 拼接访问 URL 并返回给前端
            String fileUrl = serverConfig.getUrl() + uploadPath;
            return AjaxResult.success("二维码生成成功", fileUrl);

        } catch (Exception e) {
            e.printStackTrace();
            return AjaxResult.error("二维码生成或上传失败");
        } finally {
            //清理临时文件
            FileUtils.cleanTempDir(fileName);
        }
    }

}