package dms.business.collectProcess;

import java.io.IOException;
import java.util.Vector;

import dms.data.LogRecord;
import dms.data.MatchedRecord;
import dms.util.FileUtil;

public class DataMatcher {

	/**
	 * 匹配登錄、登出數據
	 * @param logout 登出數據
	 * @param login 登錄數據
	 * @return 匹配好的用戶登錄時長記錄
	 * @throws IOException 
	 * @throws Exception 
	 */
	public Vector<MatchedRecord> match(Vector<LogRecord> logouts,Vector<LogRecord> logins) throws IOException  {
		System.out.println("本次需要匹配:登錄="+logins.size()+"條，登出="+logouts.size()+"條");
		Vector<MatchedRecord> matchedRecords = new Vector<MatchedRecord>();
		for(LogRecord logout:logouts){
			for(LogRecord login:logins){
				if(logout.getUserName().equals(login.getUserName()) && 
						logout.getPid() == login.getPid() && 
						logout.getUserIp().equals(login.getUserIp()) &&
						logout.getVisitTime() > login.getVisitTime()){
					MatchedRecord matchedRecord = new MatchedRecord();
					matchedRecord.setUserName(logout.getUserName());
					matchedRecord.setUserIp(logout.getUserIp());
					matchedRecord.setLabIp(logout.getLabIp());
					matchedRecord.setLoginTime(login.getVisitTime());
					matchedRecord.setLogoutTime(logout.getVisitTime());
					matchedRecord.setDuration(logout.getVisitTime() - login.getVisitTime());
					
					matchedRecords.addElement(matchedRecord);
					
					logins.remove(login);
					break ;//跳出login循環，執行logout下一次循環
				}
			}
		}
//		循環匹配到此結束，此時logins里面剩余的就是沒有匹配上的,把這個logins寫入文件
		String fileName = FileUtil.getHistoryFile();
		FileUtil.passivate(fileName,logins);
		System.out.println("本次匹配成功："+matchedRecords.size()+"條");
		System.out.println("本次匹配失敗："+logins.size()+"條");
		return matchedRecords;
	}
}