package com.tianbo.messagebus.service;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.tianbo.messagebus.controller.response.ResultJson;
import com.tianbo.messagebus.model.HEADER;
import com.tianbo.messagebus.model.MSG;
import com.tianbo.messagebus.model.MSGS;
import com.tianbo.messagebus.myinterface.KafkaReciveApi;
import com.tianbo.messagebus.myinterface.KafkaSendApi;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.*;
import org.springframework.scheduling.annotation.Async;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.util.StringUtils;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.io.Serializable;
import java.util.List;

@Service
//@EnableAsync
@Slf4j
public class MessageBusProcessor {

    /**http://10.161.4.20:8083/
     * 账户登录地址
     */
    @Value("${message-bus.url.login-url}")
    private String LOGIN_URL;
    /**
     * 账号名
     */
    @Value("${message-bus.auth.username}")
    private String USER_NAME;
//    private static final String USER_NAME = "HYYW";
    /**
     * 登陆密码
     */
    @Value("${message-bus.auth.password}")
    private String USER_PASS;
//    private static final String USER_PASS = "ZZecargo123";
    /**
     * 心跳接口地址
     */
    @Value("${message-bus.url.hearbit-url}")
    private  String HEARTBEAT_URL;
    /**
     * 心跳间隔时间 单位S
     */
    @Value("${message-bus.heartbit-interval}")
    private int HEARTBIT_INTERVAL;
    /**
     * 发送报文地址
     */
    @Value("${message-bus.url.send-url}")
    private String SEND_MSG_URL;
    /**
     * 接收报文地址
     */
    @Value("${message-bus.url.get-url}")
    private String GET_MSG_URL;
    /**
     * 存储登录后的token
     */
    private static String TOKEN = "";
    /**
     * 登录成功状态
     */
    private static Boolean LOGIN_STATUS=false;

    /**
     * 失败重发请求次数
     */
    private static final int RETRY_TIMES= 100;

    /**
     * HTTP请求框架
     */
    @Resource
    private RestTemplate restTemplate;

    @Autowired
    KafkaReciveApi kafkaReciveApi;

    @Autowired
    KafkaSendApi kafkaSendApi;

    /**
     * 发起登录，存储token
     *
     * @return
     */
    public Boolean login() {
        try {
            /*
             * 发起HTTP 登录请求
             * 登录接口的请求头为application/x-www-form-urlencoded
             */
            HttpHeaders headers = new HttpHeaders();
            headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);

            /*
             * 请求参数
             */
            MultiValueMap<String, String> params = new LinkedMultiValueMap<String, String>();
            params.add("username", USER_NAME);
            params.add("password", USER_PASS);

            HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<MultiValueMap<String, String>>(params, headers);

            /*
             * 提交HTTP访问，获取返回信息
             */
            ResponseEntity<String> response = restTemplate.postForEntity(LOGIN_URL, request, String.class);
            //  输出结果
            log.info(response.getBody());


        /*
            校验是否登录成功
         */
            if (response.getStatusCode().equals(HttpStatus.OK)) {
                /**
                 * 从返回信息中确定是否登录成功，并取得token
                 * 返回格式
                 * {
                 "code":200,
                 "data":{
                 "account":"yangyucheng",
                 "token":"eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiI2MCIsIm5hbWUiOiLmnajnjonmiJDmtYvor5UiLCJpZCI6NjAsImlhdCI6MTYxNzM0ODM3MiwiYWNjb3VudCI6Inlhbmd5dWNoZW5nIn0.ElAs7BtV1tu6ApQXuPXzgXUgvja76bjEb-zxqhUON48"
                 },
                 "message":"success",
                 "success":true,
                 "time":20210402152612604
                 }
                 */
                JSONObject resJson = JSON.parseObject(response.getBody());
                JSONObject resData = resJson.getJSONObject("data");
                String resCode  = resJson.getString("code");



            /*
              校验并获取登陆成功后返回的token
             */
                String authToken = resData.getString("token");
                if ("200".equals(resCode) && !StringUtils.isEmpty(authToken) && authToken.length() > 10) {
                    LOGIN_STATUS = true;

                    //设置请求头部Authorization为token, token的类型为Bearer
                    TOKEN = authToken;
                     /*
                        登录成功开始心跳
                     */
//                    startHeartBit();
                    log.info("登录成功");
                    return true;
                }else {
                    log.error("登录失败");
                    return false;
                }
            } else {
                log.error("登录失败");
                return false;
            }

        } catch (Exception e) {
            log.error("登录失败->{}",e.toString());
            return false;
        }
    }

    /**
     * 定时心跳，维持在线状态，每10秒访问一次心跳接口
     */
    public void startHeartBit() {
        try {
            while (true) {
                heartBit();
                Thread.sleep(HEARTBIT_INTERVAL);
            }
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    /**
     * 获取返回信息的状态码
     * @param response response对象
     * @return
     */
    private String  getResponseDataCode(ResponseEntity<String> response){
        JSONObject resJson = JSON.parseObject(response.getBody());
        String code = resJson.getString("code");

        return code;
    }
//    @Scheduled(fixedDelay = 10000)
    public void heartBit() {
        if (!StringUtils.isEmpty(TOKEN) && LOGIN_STATUS){
            /*
             * 发起HTTP 登录请求
             * 登录接口的请求头为application/x-www-form-urlencoded
             */
            HttpHeaders headers = new HttpHeaders();
            headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
            /*
             * 设置获取到的token到头部信息Authorization节点中
             */
            headers.setBearerAuth(TOKEN);

            /*
             * 心跳接口无参数，访问接口即可
             */
            MultiValueMap<String, String> params = new LinkedMultiValueMap<String, String>();

            HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<MultiValueMap<String, String>>(params, headers);

            /*
             * 提交HTTP访问，获取返回信息
             */
            ResponseEntity<String> response = restTemplate.postForEntity(HEARTBEAT_URL, request, String.class);

            //  输出结果
            log.info(response.getBody());

            if (response.getStatusCode().equals(HttpStatus.OK)) {
                log.info("心跳成功,token:[{}]",TOKEN);
            } else {
                log.error("心跳失败");
            }
        }
    }

    /**
     * 发送消息
     *
     * @return
     */
    public Boolean sendMsg(MSG msg) {
        if (LOGIN_STATUS) {
            try{
                log.info("………………开始发送消息:{}………………",msg.toString());
                /*
                 * 发起HTTP 登录请求
                 * 登录接口的请求头为application/json
                 */
                HttpHeaders headers = new HttpHeaders();
                headers.setContentType(MediaType.APPLICATION_JSON);

                MSGS msgs = new MSGS();
                msg.getHEADER().setSNDR("HYYW");

                msgs.setMSG(msg);


            /*
                设置要发送的实体类并将实体转换成Json字符串,这里以MAP类型举例
             */
//            Map<String, String> dataModel = new HashMap<>();
//            dataModel.put("flightNo", "CV987");
//            dataModel.put("flightDate", "MAY01");
//            dataModel.put("waybillNo", "172-12345678");
//            dataModel.put("weight", "20.01");
//            dataModel.put("piece", "2");
//            msg.getMSG().setBODY(JSON.toJSONString(dataModel));

                /*
                 * 设置获取到的token到头部信息Authorization节点中
                 */
                headers.setBearerAuth(TOKEN);

                /*
                 * 发起消息接口访问，发送消息
                 */

                HttpEntity<MSGS> request = new HttpEntity<MSGS>(msgs, headers);
                ResponseEntity<String> response = restTemplate.postForEntity(SEND_MSG_URL, request, String.class);
                if (response.getStatusCode().equals(HttpStatus.OK)) {
                    JSONObject resJson = JSON.parseObject(response.getBody());
                    String code = resJson.getString("code");
                    if ("200".equals(code)) {
                        log.info("………………消息发送成功………………");
                        return true;
                    }
                }
                log.info("消息发送失败->{}",response.getBody());
            }catch (Exception e){
                log.info("消息发送失败->{},失败原因:{}",msg.toString(),e.toString());
                log.error("消息发送失败->{},失败原因:{}",msg.toString(),e.toString());
                return false;
            }
        }else {
            log.info("未登陆，消息发送失败");
        }
        return false;
    }


    /**
     * 收取消息
     *
     * @return
     */
//    @Async
//    @Scheduled(fixedRate = 1000)
    public JSONArray getMsg() {
        if(!LOGIN_STATUS){
            login();
            return null;
        }
        /*
         * 发起HTTP 登录请求
         * 登录接口的请求头为application/json
         */
        try{
            HttpHeaders headers = new HttpHeaders();
            headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
            headers.setBearerAuth(TOKEN);
            /*
             * 请求参数拼装
             */
            MultiValueMap<String, String> params = new LinkedMultiValueMap<String, String>();
            params.add("username", "HYYW");
            HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<MultiValueMap<String, String>>(params, headers);

            /*
             * 提交HTTP访问，获取返回信息
             */
            ResponseEntity<String> response = restTemplate.postForEntity(GET_MSG_URL, request, String.class);
            //  输出结果
            log.info("接口访问结果:{}",response);

            if (response.getStatusCode().equals(HttpStatus.OK)) {
                /*
                 * 从返回信息中确定是否获取到消息
                 */
                JSONObject resJson = JSON.parseObject(response.getBody());
                String code = resJson.getString("code");
                if ("200".equals(code)){
                    JSONArray data = resJson.getJSONArray("data");
                    log.info("消息接收成功，接收消息数量>>>{}<<<",data.size());

                    for (int i = 0; i<data.size() ; i++) {
                /*
                    取得是大数据小组的实体,他们的msg.body的封装是以对象实体object封装的。不是json字符串。
                 */
                        String msg = data.getObject(i,String.class);
                        log.info("循环处理消息[{}]---{}---",i,msg);
                        JSONObject rootJson = JSON.parseObject(msg);
                        JSONObject msgJson = rootJson.getJSONObject("MSG");
                        JSONObject body = msgJson.getJSONObject("BODY");

                        HEADER msgHeader = msgJson.getObject("HEADER",HEADER.class);

                        MSG transMsg=  new MSG();
                        String transBody = body.toJSONString();
                        transMsg.setHEADER(msgHeader);
                        transMsg.setBODY(transBody);

                /*
                    自定义对返回数据的处理
                */
                        log.info("开始转发消息");
                        Boolean sendResult = sendMsg(transMsg);
                        /**
                         * todo:转发消息失败处理
                         */
                        if(!sendResult){
                            log.error("!!!!!!消息--->{}<---转发失败!!!!!!,尝试重发",transMsg.toString());
                            //todo:消息备份或者重发？
                            reSend(transMsg);
                        }
                    }
                    return data;
                }
            } else {
                log.error("消息获取失败");
                return new JSONArray();
            }
        }catch (Exception httpE){
            log.info("消息获取失败,失败原因:{}",httpE.toString());
            log.error("消息获取失败,失败原因:{}",httpE.toString());

        }
        return new JSONArray();
    }

    /**
     * feigin从服务直接获取消息
     */
    @Scheduled(fixedRate = 1000)
    public void getDataFromFeigin(){

        log.info("1-开始执行获取任务");
        ResultJson<List<String>> listResultJson = kafkaReciveApi.recive("HYYW");
        log.info("2-获取结果为:{},数量为:{}",listResultJson.toString(),listResultJson.getData().size());
        if ("200".equals(listResultJson.getCode()) && listResultJson.getData()!=null && listResultJson.getData().size()>0){
            log.info("3-开始处理获取数据");
            List<String> dataList  = listResultJson.getData();
            for (int i = 0; i <dataList.size() ; i++) {
                String msg = dataList.get(i);
                log.info("4-循环处理消息[{}]--->{}<---",i,msg);
                JSONObject rootJson = JSON.parseObject(msg);
                JSONObject msgJson = rootJson.getJSONObject("MSG");
                JSONObject body = msgJson.getJSONObject("BODY");

                HEADER msgHeader = msgJson.getObject("HEADER",HEADER.class);

                MSG transMsg=  new MSG();
                String transBody = body.toJSONString();
                transMsg.setHEADER(msgHeader);
                transMsg.setBODY(transBody);

                log.info("5-开始转发消息");
                boolean sendResult = sendMsgByFeign(transMsg);
                if(!sendResult){
                    log.error("!!!!!!消息--->{}<---转发失败!!!!!!,尝试重发",transMsg.toString());
                    //todo:消息备份或者重发？
                    reTrySend(transMsg);
                }
            }
        }

    }

    /**
     * feign从服务直接发送消息
     */
    public boolean sendMsgByFeign(MSG msg){
        MSGS msgs = new MSGS();
        msg.getHEADER().setSNDR("HYYW");

        msgs.setMSG(msg);

        ResultJson response = kafkaSendApi.send(msgs);

        if ("200".equals(response.getCode())){
            log.info("………………6-消息发送成功{}………………",response.toString());
            return true;
        }
        log.info("400-消息发送失败->{}",response.toString());
        return  false;
    }

    /**
     * feign重发消息
     */
    public void reTrySend(MSG msg){
        log.error("***进入重发***");
        for (int i = 0; i < RETRY_TIMES; i++) {
            Boolean sendResult = sendMsgByFeign(msg);
            if (sendResult){
                log.error("***重发成功***");
                break;
            }
            if (i>85){
                log.error("***重发{}次未成功,执行重新登录尝试***",i);
                login();
                break;
            }
            log.error("***已尝试重发>>>{}<<<次，重发失败***",i);
        }
    }
    /**
     * 读取备份消息并消息重发
     * @return
     */
    public void reSend(MSG msg){
        log.error("***进入重发***");
        for (int i = 0; i < RETRY_TIMES; i++) {
            Boolean sendResult = sendMsg(msg);
            if (sendResult){
                log.error("***重发成功***");
                break;
            }
            if (i>85){
                log.error("***重发{}次未成功,执行重新登录尝试***",i);
                login();
                break;
            }
            log.error("***已尝试重发>>>{}<<<次，重发失败***",i);
        }

    }



}