package com.iailab.module.data.channel.http.collector.asdb;

import com.alibaba.fastjson.JSON;
import com.iailab.framework.common.constant.CommonConstant;
import com.iailab.framework.common.util.http.HttpUtils;
import com.iailab.module.data.channel.http.collector.asdb.vo.HttpAsdbRespDataVO;
import com.iailab.module.data.channel.http.entity.HttpApiEntity;
import com.iailab.module.data.channel.http.service.HttpApiService;
import com.iailab.module.data.common.enums.DataSourceType;
import com.iailab.module.data.common.utils.TagUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.BoundHashOperations;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;

import java.math.BigDecimal;
import java.math.RoundingMode;
import java.util.*;
import java.util.concurrent.*;
import java.util.stream.Collectors;

/**
 * AnSteelDB采集
 *
 * @author Jay
 */
@Slf4j
@Component
public class HttpCollectorForAsdb {
    private static Map<String, HttpApiEntity> apiMap = new HashMap<>();

    @Autowired
    private HttpApiService httpApiService;

    @Autowired
    private RedisTemplate redisTemplate;

    ThreadPoolExecutor threadPool = new ThreadPoolExecutor(18, 36, 30, TimeUnit.SECONDS,
            new ArrayBlockingQueue<Runnable>(36), new ThreadPoolExecutor.AbortPolicy());

    private static final String STA_TRUE = "true";

    private static final int GROUP_MAX_COUNT = 300;

    private static final int MAX_WAIT = 30;

    private static final String pattern = "yyyyMMddHHmm00";

    private static final String IS_SUCCESS = "isSuccess";

    /**
     * tagName
     */
    private static final String N = "n";

    /**
     * dimension
     */
    private static final String D = "d";

    /**
     * 类型
     */
    private static final String P = "p";

    /**
     * dataValue
     */
    private static final String V = "v";

    /**
     * dataTime
     */
    private static final String T = "t";

    /**
     * 数据质量G：good,B:bad
     */
    private static final String Q = "q";

    private HttpApiEntity getHttpApi(String id) {
        if (apiMap.containsKey(id)) {
            return apiMap.get(id);
        }
        HttpApiEntity httpApi = httpApiService.info(id);
        apiMap.put(id, httpApi);
        return httpApi;
    }

    public BigDecimal getTagValue(String sourceId, String tagNo, Integer dimension, String valueType) {
        BigDecimal value = CommonConstant.BAD_VALUE;
        HttpApiEntity httpApi = this.getHttpApi(sourceId);
        String responseStr = HttpUtils.sendGet(httpApi.getUrl(), null, "");
        if (responseStr == null) {
            return value;
        }
        List<HttpAsdbRespDataVO> dataList = JSON.parseArray(responseStr, HttpAsdbRespDataVO.class);
        value = Objects.requireNonNull(dataList.stream().filter(data -> tagNo.equals(data.getPoint())).findFirst().orElse(null)).getValue();
        return value;
    }

    public Map<String, Object> getLastValues(String sourceId, List<String> tagNames) {
        Map<String, Object> result = new HashMap<>();
        HttpApiEntity httpApi = this.getHttpApi(sourceId);
        try {
            if (CollectionUtils.isEmpty(tagNames)) {
                return result;
            }
            List<String> noCacheTagNames = new ArrayList<>();//未缓存的tag
            for (int i = 0; i < tagNames.size(); i++) {
                //先查缓存
                BoundHashOperations<String, String, Object> ops = redisTemplate.boundHashOps(tagNames.get(i));
                if (ops.get(V) != null) {
                    BigDecimal value = new BigDecimal(ops.get(V).toString());
                    result.put(tagNames.get(i), value.setScale(3, RoundingMode.HALF_UP));
                } else {
                    noCacheTagNames.add(tagNames.get(i));
                }
            }
            if (CollectionUtils.isEmpty(noCacheTagNames)) {
                log.info("全部读取缓存");
                return result;
            }
            log.info("查询未缓存的数据");
            String responseStr =  HttpUtils.sendGet(httpApi.getUrl(), null, "");
            List<HttpAsdbRespDataVO> dataList = JSON.parseArray(responseStr, HttpAsdbRespDataVO.class);
            List<HttpAsdbRespDataVO> noCacheDataList = dataList.stream().filter(data -> noCacheTagNames.contains(data.getPoint())).collect(Collectors.toList());
            for (HttpAsdbRespDataVO data : noCacheDataList ){
                if (data.getValue() != null){
                    //存缓存
                    BoundHashOperations<String, String, Object> ops = redisTemplate.boundHashOps(data.getValue().toString());
                    ops.put(V, data.getValue().toString());
                    //设置过期时间
                    redisTemplate.expire(data.getValue().toString(), 10, TimeUnit.SECONDS);
                    //把查询到的数据插入结果集
                    BigDecimal value = new BigDecimal(data.getValue().toString());
                    result.put(data.getPoint(), value.setScale(3, RoundingMode.HALF_UP));
                } else {
                    result.put(data.getPoint(), CommonConstant.BAD_VALUE);
                }
            }
        } catch (Exception ex) {
            log.info("getCurrentValue异常");
            ex.printStackTrace();
            throw ex;
        }
        return result;
    }

    public Map<String, Object> getTagValues(List<Object[]> params, Date collectTime) {
        Map<String, Object> result = new HashMap<>();
        if (CollectionUtils.isEmpty(params)) {
            return new HashMap<>();
        }
        try {
            Map<Integer, List<Object[]>> measurePointsCountGroup = new HashMap<>();
            int pointListSize = params.size();
            int groupCount = pointListSize / GROUP_MAX_COUNT + ((pointListSize % GROUP_MAX_COUNT) > 0 ? 1 : 0);
            log.info("groupCount=" + groupCount);
            for (int i = 0; i < groupCount; i++) {
                int end = (i + 1) * GROUP_MAX_COUNT;
                if (end > pointListSize) {
                    end = pointListSize;
                }
                measurePointsCountGroup.put(i, params.subList(i * GROUP_MAX_COUNT, end));
            }
            log.info("measurePointsCountGroup.size()=" + measurePointsCountGroup.size());
            result = new ConcurrentHashMap<>(params.size());
            CountDownLatch countDownLatch = new CountDownLatch(measurePointsCountGroup.size());
            for (Map.Entry<Integer, List<Object[]>> measurePointsItem : measurePointsCountGroup.entrySet()) {
                HttpApiEntity httpApi = this.getHttpApi(measurePointsItem.getValue().get(0)[0].toString());
                // 并发
                Thread.sleep(1000);
                threadPool.submit(new Task(httpApi.getUrl(), httpApi.getCode(), result, measurePointsItem.getValue(),
                        collectTime, countDownLatch));
                // 顺序
                //this.getByHtp(result, measurePointsItem.getValue(), collectTime);
            }
            countDownLatch.await(MAX_WAIT, TimeUnit.SECONDS);

        } catch (Exception ex) {
            ex.printStackTrace();
        }
        return result;
    }

    /**
     * 异步采集任务
     */
    private class Task implements Runnable {
        String url;
        String sourceName;
        Date collectTime;
        Map<String, Object> result;
        List<Object[]> params;
        CountDownLatch countDownLatch;

        public Task(String url, String sourceName, Map<String, Object> result, List<Object[]> params,
                    Date collectTime, CountDownLatch countDownLatch) {
            this.url = url;
            this.sourceName = sourceName;
            this.result = result;
            this.collectTime = collectTime;
            this.params = params;
            this.countDownLatch = countDownLatch;
        }

        @Override
        public void run() {
            try {
                log.info("请求的Tag数量：" + params.size());
                this.getByHtp(url, sourceName, result, params, collectTime);
                log.info("请求结束：url=" + url);
            } catch (Exception ex) {
                log.info("获取采集值失败," + ex.getMessage());
                ex.printStackTrace();
            } finally {
                countDownLatch.countDown();
            }
        }

        /**
         * getTagDataByHttp
         *
         * @param url
         * @param sourceName
         * @param result
         * @param params
         * @param collectTime
         */
        private void getByHtp(String url, String sourceName, Map<String, Object> result, List<Object[]> params, Date collectTime) {
            String responseStr =  HttpUtils.sendGet(url, null, "");
            List<HttpAsdbRespDataVO> dataList = JSON.parseArray(responseStr, HttpAsdbRespDataVO.class);
            for (HttpAsdbRespDataVO data : dataList){
                result.put(TagUtils.genTagId(DataSourceType.HTTP.getCode(), sourceName, data.getPoint()), data.getValue());
            }
        }
    }

    private void getByHtp(String url, String sourceName, Map<String, Object> result, List<Object[]> params, Date collectTime) {String responseStr =  HttpUtils.sendGet(url, null, "");
        List<HttpAsdbRespDataVO> dataList = JSON.parseArray(responseStr, HttpAsdbRespDataVO.class);
        for (HttpAsdbRespDataVO data : dataList){
            result.put(TagUtils.genTagId(DataSourceType.HTTP.getCode(), sourceName, data.getPoint()), data.getValue());
        }}
}