package com.chinaztt.mes.common.ftp;


import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPReply;
import org.apache.commons.pool.BasePoolableObjectFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;

/**
 * @Author: zhangxy
 * @Date: 2019/12/10 8:45
 */
public class FtpPoolAbleObjectFactory extends BasePoolableObjectFactory<FTPClient> {

    private FtpClientConfigure ftpClientConfigure;
    private static Logger logger = LoggerFactory.getLogger(FtpPoolAbleObjectFactory.class);

    public FtpPoolAbleObjectFactory(FtpClientConfigure ftpClientConfigure) {
        this.ftpClientConfigure = ftpClientConfigure;
    }

    @Override
    public FTPClient makeObject() {
        logger.info("make client");
        FTPClient ftpClient = new FTPClient();
        String no = "ON";
        String format = "OPTS UTF8";
        try {
            ftpClient.setConnectTimeout(Integer.parseInt(ftpClientConfigure.getClientTimeout()));
            ftpClient.setDefaultTimeout(Integer.parseInt(ftpClientConfigure.getClientTimeout()));
            ftpClient.setDataTimeout(Integer.parseInt(ftpClientConfigure.getClientTimeout()));
            ftpClient.connect(ftpClientConfigure.getHost(), Integer.parseInt(ftpClientConfigure.getPort()));
            int reply = ftpClient.getReplyCode();
            if (!FTPReply.isPositiveCompletion(reply)) {
                ftpClient.disconnect();
                logger.error("FTPServer refused connection");
                return null;
            }
            boolean result = ftpClient.login(ftpClientConfigure.getUsername(), ftpClientConfigure.getPassword());
            if (!result) {
                throw new RuntimeException("ftpClient登陆失败");
            }
            if (FTPReply.isPositiveCompletion(ftpClient.sendCommand(format, no))) {
                ftpClient.setControlEncoding("UTF-8");
            } else {
                ftpClient.setControlEncoding(ftpClientConfigure.getEncoding());
            }

            ftpClient.setBufferSize(1024);
            ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
            if (ftpClientConfigure.getPassiveMode().equals(true)) {
                ftpClient.enterLocalPassiveMode();
            }
        } catch (Exception e) {
            logger.error("make object error", e);
        }
        return ftpClient;
    }

    @Override
    public void destroyObject(FTPClient ftpClient) {
        try {
            if (ftpClient != null && ftpClient.isConnected()) {
                ftpClient.logout();
            }
        } catch (IOException io) {
            logger.error("destory logout exception", io);
        } finally {
            try {
                if (ftpClient != null) {
                    ftpClient.disconnect();
                }
            } catch (Exception io) {
                logger.error("destory disconnect exception", io);
            }
        }
    }

    @Override
    public boolean validateObject(FTPClient ftpClient) {
        try {
            return ftpClient.sendNoOp();
        } catch (IOException e) {
            logger.error("Failed to validate client:", e);
            return false;
        }
    }

}