package com.dy.pipIrrWebFile.fm;

import com.dy.common.util.MurmurHash;

public class RestHashDeal {
	

	/**
	 * 文件名称计算转换
	 * @param fileName
	 * @param rvo
	 * @return
	 * @throws Exception
	 */
	public FileRestVo fileTransRest(String fileName, FileRestVo rvo) throws Exception{
		if(fileName != null 
				&& !fileName.trim().equals("") 
				&& rvo != null){
			if(DyFmListener.dyFileGroup == null 
					|| DyFmListener.dyFileGroup.list == null 
					|| DyFmListener.dyFileGroup.list.size() == 0){
				throw new Exception("严重错误，文件服务器restful未配置！") ;
			}else{
				DyFileSvConf.Vo confVo = null ;
				Integer hash = null ;
				if(DyFmListener.dyFileGroup.list.size() == 1){
					confVo = DyFmListener.dyFileGroup.list.get(0) ;
				}else{
					hash = new MurmurHash().hash16_plus(fileName) ;
					for(DyFileSvConf.Vo lvo : DyFmListener.dyFileGroup.list){
						if(hash >= lvo.hashStart.intValue() 
								&& hash <= lvo.hashEnd.intValue()){
							confVo = lvo ;
							break ;
						}
					}
				}
				if(confVo != null){
					rvo.fileSysId = confVo.id;
					rvo.fileNameHash = hash;
					rvo.fileSysAbsolutePath = confVo.fileSysAbsolutePath;
					rvo.fileSysRelativePath = confVo.fileSysRelativePath;
					rvo.fileSysRestUrl = confVo.restUrl;
					rvo.fileWebUrl = confVo.webUrl ;
					rvo.fileWebDownloadPath = confVo.webDownloadPath ;
				}
			}
		}
		return rvo ;
	}

	
	/**
	 * 哈希值计算转换
	 * @param hashcode
	 * @param rvo
	 * @return
	 * @throws Exception
	 */
	public FileRestVo fileTransRest(Integer hashcode, FileRestVo rvo) throws Exception{
		if(hashcode != null
				&& rvo != null){
			if(DyFmListener.dyFileGroup == null 
					|| DyFmListener.dyFileGroup.list == null 
					|| DyFmListener.dyFileGroup.list.size() == 0){
				throw new Exception("严重错误，文件服务器restful未配置！") ;
			}else{
				DyFileSvConf.Vo confVo = null ;
				Integer hash = hashcode ;
				if(DyFmListener.dyFileGroup.list.size() == 1){
					confVo = DyFmListener.dyFileGroup.list.get(0) ;
				}else{
					for(DyFileSvConf.Vo lvo : DyFmListener.dyFileGroup.list){
						if(hash >= lvo.hashStart.intValue() 
								&& hash <= lvo.hashEnd.intValue()){
							confVo = lvo ;
							break ;
						}
					}
				}
				if(confVo != null){
					rvo.fileSysId = confVo.id;
					rvo.fileNameHash = hash;
					rvo.fileSysAbsolutePath = confVo.fileSysAbsolutePath;
					rvo.fileSysRelativePath = confVo.fileSysRelativePath;
					rvo.fileSysRestUrl = confVo.restUrl;
					rvo.fileWebUrl = confVo.webUrl ;
					rvo.fileWebDownloadPath = confVo.webDownloadPath ;
				}
			}
		}
		return rvo ;
	}

}