package com.pz.merchant.controller.file;

import cn.dev33.satoken.annotation.SaIgnore;
import com.pz.common.config.FileSystemProperties;
import com.pz.common.core.controller.BaseController;
import com.pz.common.core.domain.R;
import com.pz.common.utils.file.FileTool;
import com.pz.common.utils.file.FileUtils;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
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.HttpServletResponse;

/**
 * 文件上传下载
 * <p>created in  2023/9/8 16:01
 *
 * @author WangMin
 * @version 1.0
 */
@RestController
@RequiredArgsConstructor
@RequestMapping("/file")
@Slf4j
public class FileSystemController extends BaseController {

    private final FileSystemProperties properties;

    private static final String DOWNLOAD_SUFFIX = "file";

    /**
     * 上传文件
     *
     * @param file     待上传文件
     * @param fileName 指定文件名，若无需指定文件名可忽略
     * @return 文件访问路径
     */
    @PostMapping("/upload")
    public R<String> uploadFile(MultipartFile file, String fileName) {
        try {
            return R.ok(FileTool.upload(file, fileName));
        } catch (Exception e) {
            return R.fail(e.getMessage());
        }
    }

    /**
     * 下载文件
     *
     * @param path 文件路径
     */
    @GetMapping("/download")
    public void downloadFile(String path, HttpServletResponse response) {
        // 根据路径拼装文件实际存储路径
        int index = path.indexOf(DOWNLOAD_SUFFIX);
        if (index == -1) {
            log.error("文件路径非法");
        }
        String downloadPath = properties.getUploadPath() + path.substring(index + DOWNLOAD_SUFFIX.length());
        try {
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, downloadPath.substring(downloadPath.lastIndexOf("/") + 1));
            FileTool.writeBytes(downloadPath, response.getOutputStream());
        } catch (Exception e) {
            log.error(e.getMessage());
        }

    }

}