package com.yuanchu.mom.service.impl;

import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.ObjectUtils;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.yuanchu.mom.mapper.ReceiptMapper;
import com.yuanchu.mom.pojo.Receipt;
import com.yuanchu.mom.service.ReceiptService;
import com.yuanchu.mom.utils.FileSaveUtil;
import io.swagger.models.Response;
import org.apache.logging.log4j.util.Strings;
import org.springframework.core.io.FileSystemResource;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import javax.annotation.Resource;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.util.List;
import java.util.Map;

/**
 * 回单表(Receipt)表服务实现类
 *
 * @author zss
 * @since 2023-08-11 10:08:55
 */
@Service
public class ReceiptServiceImpl extends ServiceImpl<ReceiptMapper, Receipt> implements ReceiptService {

    @Resource
    ReceiptMapper receiptMapper;

    //查询回单列表
    @Override
    public IPage<Map<String, Object>> selectAllRece(Page<Object> page, String name, String orderCode, String type, String deliverTime) {
        return receiptMapper.selectAllRece(page, name, orderCode, type, deliverTime);
    }

    //根据id删除
    @Override
    public void delRece(Integer id) {
        Receipt receipt = receiptMapper.selectById(id);
        receipt.setState(0);
        receiptMapper.updateById(receipt);
    }

    //批量删除
    @Override
    public void delAllRece(List<Integer> ids) {
        List<Receipt> receipts = receiptMapper.selectBatchIds(ids);
        for (Receipt receipt : receipts) {
            receipt.setState(0);
            receiptMapper.updateById(receipt);
        }
    }

    //上传附件修改状态
    @Override
    public void updRece(Integer id, MultipartFile file) {
        if (ObjectUtils.isNotEmpty(file)) {
            Receipt receipt = receiptMapper.selectById(id);
            receipt.setUrl(FileSaveUtil.StoreFile(file));
            receipt.setType(1);
            receiptMapper.updateById(receipt);
        }
    }

    //根据id查看回单照片
    @Override
    public ResponseEntity<byte[]> selReceDatil(Integer id) throws IOException {
        String url = receiptMapper.selectById(id).getUrl();
        String path = "D:\\webapp\\images\\" + url;
        //获取图片格式后缀名
        String extension = getImageExtension(url);
        // 读取本地图片文件，并将其转换为字节数组
        FileSystemResource imageResource = new FileSystemResource(path);
        byte[] bytes = Files.readAllBytes(imageResource.getFile().toPath());
        // 设置HTTP头信息，告诉浏览器返回的是图片数据
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(new MediaType("image", extension));
        return new ResponseEntity<>(bytes, headers, HttpStatus.OK);
    }

    private String getImageExtension(String imageName) {
        // 根据图片文件名获取扩展名
        int dotIndex = imageName.lastIndexOf('.');
        if (dotIndex > 0 && dotIndex < imageName.length() - 1) {
            return imageName.substring(dotIndex + 1);
        }
        return null;
    }
}