package com.dbnt.faisp.equip.service;


import com.dbnt.faisp.equip.mapper.EquipMapper;
import com.dbnt.faisp.equip.model.Equip;
import com.dbnt.faisp.equip.model.EquipFile;
import com.dbnt.faisp.equip.repository.EquipFileRepository;
import com.dbnt.faisp.equip.repository.EquipRepository;
import com.dbnt.faisp.translator.mapper.TranslatorMapper;
import com.dbnt.faisp.translator.model.Translator;
import com.dbnt.faisp.translator.model.Translator.TranslatorId;
import com.dbnt.faisp.translator.model.TranslatorCrr;
import com.dbnt.faisp.translator.repository.TranslatorCareerRepository;
import com.dbnt.faisp.translator.repository.TranslatorRepository;
import com.dbnt.faisp.util.ParamMap;
import com.dbnt.faisp.util.Utils;

import lombok.RequiredArgsConstructor;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.FileCopyUtils;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.core.env.Environment;

import java.io.File;
import java.time.LocalDateTime;
import java.util.*;

@Service
@RequiredArgsConstructor
public class EquipService {
	@Value("${spring.servlet.multipart.location}")
	  protected String locationPath;

	private final EquipRepository equipRepository;
	private final EquipFileRepository equipFileRepository;
	private final EquipMapper equipMapper;
	
	
	@Transactional
	public void saveEquip(Equip equip, MultipartHttpServletRequest request) {
		Equip dbEquip = equipRepository.findFirstByOrderByEquKeyDesc();
		try {
			if(dbEquip == null) {
				equip.setEquKey(1);
				equip.setVersionNo(1);
				equipRepository.save(equip);
			} else {
				equip.setEquKey(dbEquip.getEquKey()+1);
				equip.setVersionNo(1);
				equipRepository.save(equip);
			}		
				saveFile(equip,request);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
	public void saveFile(Equip equip, MultipartHttpServletRequest mRequest) throws Exception {
		try {
			String path = locationPath;
			String FileSize;
			File dir = new File(path);
			if(!dir.exists()) dir.mkdir();

			List<MultipartFile> mFiles = mRequest.getFiles("file");
			for(int i = 0; i < mFiles.size(); i++) {
				MultipartFile mFile = mFiles.get(i);
				FileSize = calculationSize(mFile.getSize());
				if(!"".equals(mFile.getOriginalFilename())){
					String fileName = mFile.getOriginalFilename();
					if(fileName.contains("\\")){
						String notSecuredFileName = fileName.substring(fileName.lastIndexOf("\\") +1);
						fileName = ("".equals(notSecuredFileName) || null == notSecuredFileName) ? fileName : notSecuredFileName;
					};

					String fileExt = Utils.getFileExtention(fileName);
					String saveName = Utils.generationSaveName() + "." + fileExt;
					FileCopyUtils.copy(mFile.getBytes(), new File(path, saveName));

					EquipFile equipFile = new EquipFile();
					equipFile.setFileSeq(1);
					equipFile.setEquKey(equip.getEquKey());
					equipFile.setVersionNo(equip.getVersionNo());					
					equipFile.setOrigNm(fileName);
					equipFile.setConvNm(saveName);
					equipFile.setFileExtn(fileExt);
					equipFile.setFilePath(path);
					equipFile.setFileSize(FileSize);
					System.out.println(equipFile);

					equipFileRepository.save(equipFile);
				}
			}

		} catch (Exception e) {
			throw e;
		}

		
	}
	
	
	private String calculationSize(double fileSize){
	    String[] units = {"bytes", "KB", "MB", "GB", "TB", "PB"};
	    double unitSelector = Math.floor(Math.log(fileSize)/Math.log(1024));
	    if(fileSize>0){
	      return Math.round((fileSize/Math.pow(1024, unitSelector))*100)/100d+" "+units[(int)unitSelector];
	    }else{
	      return "";
	    }
	  }

	
}