package com.ruoyi.web.controller.api;

import com.alibaba.fastjson2.JSON;
import com.ruoyi.common.config.FileUploadConfig;
import com.ruoyi.common.constant.CacheConstants;
import com.ruoyi.common.core.domain.R;
import com.ruoyi.common.core.redis.RedisCache;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.framework.web.service.TokenService;
import com.ruoyi.system.model.TFile;
import com.ruoyi.system.service.SysFileService;
import com.ruoyi.system.service.impl.SysFileServiceImpl;
import com.ruoyi.web.controller.tool.TencentCosUtil;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiImplicitParams;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import org.springframework.web.multipart.MultipartFile;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.URLEncoder;

/**
 * @author HJL
 * @version 1.0
 * @since 2024-05-30 9:27
 */
@RestController
@RequestMapping("/cos")
@Api(tags = "公共-文件上传")
@Slf4j
public class COSController {

    @Resource
    private TencentCosUtil tencentCosUtil;

    @Autowired
    SysFileService sysFileService;

    @Autowired
    FileUploadConfig fileUploadConfig;

    @Autowired
    TokenService tokenService;

    public String getLocalUrlPrefix(){
        ServletRequestAttributes servletRequestAttributes = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes());
        if (servletRequestAttributes==null || servletRequestAttributes.getRequest()==null){
            return fileUploadConfig.getFileUrlPrefix();
        }
        HttpServletRequest request = servletRequestAttributes.getRequest();
        StringBuffer url = new StringBuffer();
        url.append(request.getScheme()).append("://")
                .append(request.getServerName())
                .append((request.getServerPort() == 80 ? "" : ":" + request.getServerPort()))
                .append(request.getContextPath());
        return url.toString();
    }

    public  String getLocalFileUrlPrefix(String fileId){
        String token = tokenService.getLoginUser().getToken();
        StringBuffer url = new StringBuffer();
        url.append(getLocalUrlPrefix())
                .append("/cos/get/").append(fileId).append("?s=").append(URLEncoder.encode(token))
        ;
        return url.toString();
    }






    public static void failResponse(String message){
        ServletRequestAttributes servletRequestAttributes = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes());
        HttpServletResponse response = servletRequestAttributes.getResponse();
        String failResult =  JSON.toJSONString(R.fail(message));
        //设置编码格式
        response.setCharacterEncoding("UTF-8");
        response.setContentType("application/json;charset=UTF-8");
        PrintWriter pw = null;
        try {
            pw = response.getWriter();
            pw.write(failResult);
            pw.flush();
        } catch (IOException e) {
            log.error("io异常");
        }finally {
            if (pw!=null) {
                pw.close();
            }
        }

    }
    @Autowired
    private RedisCache redisCache;

    @GetMapping("get/{fileId}")
    public void get(@PathVariable("fileId") String fileid,@RequestParam("s") String s){
        if (StringUtils.isEmpty(fileid)){
            failResponse("文件ID不能为空");
            return;
        }
        if (StringUtils.isEmpty(s)){
            failResponse("token不能为空");
            return;
        }
        Object object = redisCache.getCacheObject(CacheConstants.LOGIN_TOKEN_KEY + s);
        if (object==null){
            failResponse("用户登录已失效");
            return;
        }
        TFile file = sysFileService.getById(fileid);
        if (file==null){
            failResponse("图片不存在");
            return;
        }
        tencentCosUtil.download(file);
    }


    @GetMapping("get/file")
    public void getFile(@RequestParam("fileUrl") String fileUrl,@RequestParam("s") String s){
        if (StringUtils.isEmpty(fileUrl)){
            failResponse("文件路径不能为空");
            return;
        }
        if (StringUtils.isEmpty(s)){
            failResponse("token不能为空");
            return;
        }
        Object object = redisCache.getCacheObject(CacheConstants.LOGIN_TOKEN_KEY + s);
        if (object==null){
            failResponse("用户登录已失效");
            return;
        }
        tencentCosUtil.download(fileUrl);
    }

    /**
     * 新上传接口，下一版更新
     * @param file
     * @param folder 上传到cos的文件目录：如/contract/
     * @return
     */
    @PostMapping("/uploadnew")
    @ApiOperation(value = "文件上传,带上传目录，返回文件ID", tags = "公共-文件上传")
    @ApiImplicitParams({
            @ApiImplicitParam(value = "文件", name = "file", dataType = "MultipartFile", required = true)
    })
    public R<TFile> uploadnew(@RequestParam("file") MultipartFile file, @RequestParam("folder") String folder) {
        TFile tFile = tencentCosUtil.upload(file,folder);
        tFile.setFileUrl(getLocalFileUrlPrefix(tFile.getId()));
        return R.ok(tFile);
    }

    /**
     *
     * @param file
     * @param
     * @return
     */
    @PostMapping("/upload")
    @ApiOperation(value = "文件上传", tags = "公共-文件上传")
    @ApiImplicitParams({
            @ApiImplicitParam(value = "文件", name = "file", dataType = "MultipartFile", required = true)
    })
    public R<String> upload(@RequestParam("file") MultipartFile file,@RequestParam("folder") String folder) {
        String url = tencentCosUtil.upLoadFile(file,folder);
        return R.ok(url, url);
    }
    @PostMapping("/downloadImg")
    @ApiOperation(value = "文件下载", tags = "公共-文件下载")
    @ApiImplicitParams({
            @ApiImplicitParam(value = "文件url", name = "url", dataType = "String", required = true)
    })
    public String downloadImg(@RequestParam("url") String url) {
       return tencentCosUtil.downLoadFileImg(url);
    }
    @PostMapping("/download")
    @ApiOperation(value = "文件下载", tags = "公共-文件下载")
    @ApiImplicitParams({
            @ApiImplicitParam(value = "文件url", name = "url", dataType = "String", required = true)
    })
    public void download(@RequestParam("url") String url) {
        tencentCosUtil.downLoadFile(url);
    }
}