package com.lf.server.service.show;

import com.lf.server.entity.ctrl.ShpRecordEntity;
import com.lf.server.entity.data.MetaEntity;
import com.lf.server.helper.FileHelper;
import com.lf.server.helper.ShpHelper;
import com.lf.server.helper.StringHelper;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * 查询服务类
 * @author WWW
 */
@Service
public class InquiryService {
    /**
     * 读取Shp第一条记录的WKT
     *
     * @param list
     * @return
     */
    public ShpRecordEntity readShpFirstRecord(List<MetaEntity> list) {
        String fileName = null;
        for (MetaEntity mf : list) {
            if (mf.getName().toLowerCase().indexOf(".shp") > -1) {
                fileName = mf.getPath();
                break;
            }
        }
        if (StringHelper.isEmpty(fileName)) {
            return null;
        }

        ShpRecordEntity sr = ShpHelper.readShpFirstRecord(fileName);
        FileHelper.deleteFiles(list);

        return sr;
    }
}