package com.iden.bms.service;

import cn.hutool.core.bean.BeanUtil;

import cn.hutool.core.collection.CollUtil;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.face.monitor.FaceMonitor;
import com.face.monitor.model.FaceModel;
import com.iden.bms.face.FaceIdenTool;
import com.iden.common.entity.IdenFaceImage;
import com.iden.common.entity.IdenWarningPersonTrace;
import com.iden.common.exception.BDException;

import com.iden.common.service.IdenWarningPersonTraceService;
import com.iden.common.util.DateUtils;
import com.iden.common.util.ImgUtil;
import com.iden.common.vo.FaceRetrieveResultVO;
import com.iden.common.vo.TraceVO;
import com.iden.common.vo.UserLoginedConvertVO;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import javax.annotation.Resource;
import java.io.File;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.UUID;

/**
 *
 * @author makejava
 * @since 2021-05-21 00:08:38
 */
@Service
public class TraceService {

    @Resource
    private FaceImageService faceImageService;

    @Resource
    private IdenWarningPersonTraceService idenWarningPersonTraceService;


    @Value("${iden.root:#{null}}")
    private String idenRoot;
    @Value("${file.url:#{null}}")
    private String fileUrl;

    /**
     * 上传图像
     * @param file
     * @return  访问URL
     */
    public String uploadImage(MultipartFile file) throws BDException {
        String image = null;
        try {
            if (file != null) {
                //获取文件名
                String fileName = file.getOriginalFilename();
                if (org.springframework.util.StringUtils.isEmpty(fileName) || file.getSize() == 0) {
                    throw new BDException("图像文件不能为空！");
                }
                //验证文件名是否合格
                if (!ImgUtil.isImg(fileName)) {
                    throw new BDException("图像文件必须是图片格式！");
                }
                String saveFileName = DateUtils.getCurrYyyyMMddHHmmssDate() + "_" + UUID.randomUUID().toString()  + fileName.substring(fileName.lastIndexOf("."), fileName.length());
                String picFullFileName = idenRoot + "data/trace/" + saveFileName;
                FileOutputStream fos = new FileOutputStream(picFullFileName);
                fos.write(file.getBytes());
                image = saveFileName;
            } else {
                throw new BDException("上传失败");
            }
        } catch (Exception e) {
            throw new BDException("上传失败",e);
        }

        return image;
    }

    /**
     *  上传图像查询轨迹列表
     * 图像识别，使用特征码查询图像库，得到图库表中对应的数据列表
     * @return
     */
    public List<TraceVO> listUploadImagesTrace(String imageNames, String beginDate, String endDate, UserLoginedConvertVO loginUser) {
        Date dateBegin = null;
        if(StringUtils.isNotEmpty(beginDate)){
            dateBegin  = DateUtils.strToDate(beginDate,"yyyyMMdd");
        }
        Date dateEnd = null;
        if(StringUtils.isNotEmpty(endDate)){
            dateEnd  = DateUtils.strToDate(endDate,"yyyyMMdd");
        }

        if(imageNames.endsWith(",")) {
            imageNames = imageNames.substring(0, imageNames.length() - 1);
        }

        String[] imageNameArr = imageNames.split(",");
        File[] imgFiles = new File[imageNameArr.length];
        for (int i = 0; i < imageNameArr.length; i++) {
            if (StringUtils.isNotEmpty(imageNameArr[i])){
                imgFiles[i] = new File(idenRoot + "data/trace/" + imageNameArr[i]);
            }
        }

        //上传的图像的特征码结构体数组
        FaceModel[] faceModels = FaceIdenTool.extractFeature(idenRoot,imgFiles);

        //初始化引擎，加载摄像头上传的在时间段内的图像人脸特征库
        File cameraImageDirFile = new File(idenRoot + "data/final/camera/image");
        File[] cameraImageFiles = getCameraImageFiles(cameraImageDirFile,dateBegin,dateEnd);
        FaceMonitor faceMonitorCamera = FaceIdenTool.initFaceMonitor(idenRoot,cameraImageFiles);

        List<TraceVO> result = new ArrayList<>();
        for(FaceModel faceModel : faceModels) {
            FaceRetrieveResultVO faceRetrieveResultVO = FaceIdenTool.getHitResult(faceMonitorCamera,faceModel);
           if (faceRetrieveResultVO != null) {
               int hitIndex = faceRetrieveResultVO.getIndex();
               IdenFaceImage idenFaceImage = faceImageService.getIdenFaceImageByImageFileName(cameraImageFiles[hitIndex].getName());
               if(idenFaceImage != null){
                   TraceVO vo = new TraceVO();
                   BeanUtil.copyProperties(idenFaceImage,vo);
                   result.add(vo);
               }
           }
        }
        return result;
    }

    private File[] getCameraImageFiles(File cameraImageDirFile,Date dateBegin, Date dateEnd) {
        List<File> list = new ArrayList<>();

        File[] cameraCodeDirFiles = cameraImageDirFile.listFiles();
        if (cameraCodeDirFiles != null && cameraCodeDirFiles.length > 0){
            for (File cameraCodeDirFile : cameraCodeDirFiles) {
                File[] cameraImageFiles = cameraCodeDirFile.listFiles();
                if (cameraImageFiles != null && cameraImageFiles.length > 0){
                    for (File cameraImageFile : cameraImageFiles){
                        String photographTime = cameraImageFile.getName().substring(0, cameraImageFile.getName().indexOf("_"));
                        Date photographDate = DateUtils.strToDate(photographTime.substring(0,8),"yyyyMMdd");
                        if(dateBegin != null && photographDate.before(dateBegin)){
                            continue;
                        }
                        if(dateEnd != null && photographDate.after(dateEnd)){
                            continue;
                        }
                        list.add(cameraImageFile);
                    }
                }
            }
        }
        File[] resuit = new File[list.size()];
        return list.toArray(resuit);
    }

    /**
     *  上传图像查询轨迹列表
     * 图像识别，使用特征码查询图像库，得到图库表中对应的数据列表
     * @return
     */
    public List<TraceVO> listTrace(String uid, String beginDate, String endDate, UserLoginedConvertVO loginUser) {
        List<TraceVO> vos = new ArrayList<>();
        QueryWrapper<IdenWarningPersonTrace> queryWrapper = new QueryWrapper<>();
        queryWrapper.lambda().eq(IdenWarningPersonTrace::getUid,uid)
                .ge(StringUtils.isNotEmpty(beginDate),IdenWarningPersonTrace::getDataDate,beginDate)
                .le(StringUtils.isNotEmpty(endDate),IdenWarningPersonTrace::getDataDate,endDate)
                .orderByAsc(IdenWarningPersonTrace::getPhotographTime);
        List<IdenWarningPersonTrace> idenWarningPersonTraceList = this.idenWarningPersonTraceService.list(queryWrapper);
        if(CollUtil.isNotEmpty(idenWarningPersonTraceList)) {
            idenWarningPersonTraceList.forEach(item->{
                TraceVO vo = new TraceVO();
                IdenWarningPersonTrace idenWarningPersonTrace = new IdenWarningPersonTrace();
                BeanUtil.copyProperties(idenWarningPersonTrace,vo);
                vos.add(vo);
            });
        }
        return vos;
    }
}