package com.fdkankan.fusion.controller;

import com.fdkankan.common.constant.ErrorCode;
import com.fdkankan.common.exception.BusinessException;
import com.fdkankan.common.response.ResultData;
import com.fdkankan.fusion.common.ResultCode;
import com.fdkankan.fyun.oss.UploadToOssUtil;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.annotation.Resource;
import java.io.File;
import java.util.UUID;

@RestController
@RequestMapping("/upload")
public class UploadController {

    @Resource
    private UploadToOssUtil uploadToOssUtil;

    @Value("${upload.file-path}")
    private String filePath;
    @Value("${upload.query-path}")
    private String queryPath;


    @PostMapping("/file")
    public ResultData file(@RequestParam(required = false) MultipartFile file) throws Exception {
        if(file.isEmpty()){
            throw new BusinessException(ResultCode.UPLOAD_FILE_NO_EXIST.code,ResultCode.UPLOAD_FILE_NO_EXIST.msg);
        }
        if(file.getSize()>10 * 1024 * 1024 * 100){
            System.out.println(file.getSize());
            throw new BusinessException(ResultCode.UPLOAD_FILE_TO_LONG.code,ResultCode.UPLOAD_FILE_TO_LONG.msg);
        }
        //获取文件名
        String fileName = file.getOriginalFilename();
        if(StringUtils.isEmpty(fileName)){
            throw new BusinessException(ResultCode.UPLOAD_FILE_NO_EXIST.code,ResultCode.UPLOAD_FILE_NO_EXIST.msg);
        }
        //获取文件后缀名
        String suffixName = fileName.substring(fileName.lastIndexOf("."));
        //重新生成文件名
        fileName = UUID.randomUUID().toString().replace("-","");
        File localFile = File.createTempFile(fileName,suffixName);
        file.transferTo(localFile);
        String path = localFile.getPath();
        uploadToOssUtil.upload(path,filePath + fileName + suffixName);
        if(!uploadToOssUtil.existKey(filePath + fileName + suffixName)){
            throw new BusinessException(ResultCode.UPLOAD_ERROR.code,ResultCode.UPLOAD_ERROR.msg);
        }
        return ResultData.ok( queryPath + filePath + fileName + suffixName);
    }
}