package com.ots.project.exam.service.impl;

import com.alibaba.fastjson.JSON;
import com.ots.project.exam.service.ReportCalculationServices;
import com.ots.project.tool.report.reportCalculation.response.ReportAPIResult;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.util.Objects;

@Service
@Slf4j
public class ReportCalculationServicesImpl implements ReportCalculationServices {

    private Socket socket;

    private PrintWriter socketOut;

    private BufferedReader socketIn;

    @Value("${ATSTai.port}")
    private int port;

    @Value("${ATSTai.host}")
    private String host;

    @PostConstruct
    private void init() {
        try {
            //首先直接创建socket,端口号1~1023为系统保存，一般设在1023之外
            socket = new Socket(host, port);
            //创建三个流，系统输入流BufferedReader systemIn，socket输入流BufferedReader socketIn，socket输出流PrintWriter socketOut;
            socketIn = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            socketOut = new PrintWriter(socket.getOutputStream());
        } catch (Exception ex) {
            log.error("调用泰国团队组件连接失败：{}",ex.getMessage(),ex);
        }
    }

    @PreDestroy
    private void destory() {
        if (Objects.nonNull(socketIn)) {
            try {
                socketIn.close();
            } catch (IOException ioe) {
                ioe.printStackTrace();
            }
        }
        if (Objects.nonNull(socketOut)) {
            socketOut.close();
        }
        if (Objects.nonNull(socket)) {
            try {
                socket.close();
            } catch (IOException ioe) {
                ioe.printStackTrace();
            }
        }
    }

    /**
     * 判断是否断开连接，断开返回true,没有返回false
     * @param socket
     * @return
     */
    public Boolean isServerClose(Socket socket){
        try{
            socket.sendUrgentData(0xFF);//发送1个字节的紧急数据，默认情况下，服务器端没有开启紧急数据处理，不影响正常通信
            return false;
        }catch(Exception se){
            return true;
        }
    }


    @Override
    public ReportAPIResult stageCalculation(Object request) {
        if (isServerClose(socket)) {
            destory();
            init();
        }
        ReportAPIResult reportAPIResult = new ReportAPIResult();
        try {
            reportAPIResult = getReportAPIResult(request);
        }catch (Exception ex) {
            log.error("调用泰国团队组件断开：尝试重连......");
            destory();
            init();
            try {
                reportAPIResult = getReportAPIResult(request);
            } catch (IOException e) {
                e.printStackTrace();
                reportAPIResult.setCode("111");
                reportAPIResult.setMessage("调用泰国团队组件异常：" + ex.getMessage());
            }
        }
        return reportAPIResult;
    }

    private ReportAPIResult getReportAPIResult(Object request) throws IOException {
        ReportAPIResult reportAPIResult;
        socketOut.println(JSON.toJSONString(request));
        socketOut.flush();//赶快刷新使Server收到，也可以换成socketOut.println(readline, ture)
        String inTemp = socketIn.readLine();
        reportAPIResult = JSON.parseObject(inTemp, ReportAPIResult.class);
        return reportAPIResult;
    }
}