package cn.ac.iie.dao;

import cn.ac.iie.config.ApplicationConfig;
import cn.ac.iie.service.read.ReadHistoryArangoData;
import cn.ac.iie.utils.ArangoDBConnect;
import cn.ac.iie.utils.ExecutorThreadPool;
import com.arangodb.ArangoCursor;
import com.arangodb.entity.BaseDocument;
import com.arangodb.entity.BaseEdgeDocument;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CountDownLatch;

/**
 * 获取arangoDB历史数据
 *
 * @author wlh
 */
public class BaseArangoData {
    private static final Logger LOG = LoggerFactory.getLogger(BaseArangoData.class);

    public static ConcurrentHashMap<Integer, ConcurrentHashMap<String, BaseDocument>> historyVertexFqdnMap = new ConcurrentHashMap<>();
    public static ConcurrentHashMap<Integer, ConcurrentHashMap<String, BaseDocument>> historyVertexIpMap = new ConcurrentHashMap<>();
    public static ConcurrentHashMap<Integer, ConcurrentHashMap<String, BaseDocument>> historyVertexSubscriberMap = new ConcurrentHashMap<>();
    public static ConcurrentHashMap<Integer, ConcurrentHashMap<String, BaseEdgeDocument>> historyRelationFqdnAddressIpMap = new ConcurrentHashMap<>();
    public static ConcurrentHashMap<Integer, ConcurrentHashMap<String, BaseEdgeDocument>> historyRelationIpVisitFqdnMap = new ConcurrentHashMap<>();
    public static ConcurrentHashMap<Integer, ConcurrentHashMap<String, BaseEdgeDocument>> historyRelationFqdnSameFqdnMap = new ConcurrentHashMap<>();
    public static ConcurrentHashMap<Integer, ConcurrentHashMap<String, BaseEdgeDocument>> historyRelationSubsciberLocateIpMap = new ConcurrentHashMap<>();

    private static ArangoDBConnect arangoDBConnect = ArangoDBConnect.getInstance();

    private ExecutorThreadPool threadPool = ExecutorThreadPool.getInstance();

    public <T extends BaseDocument> void readHistoryData(String table,
                                                  ConcurrentHashMap<Integer, ConcurrentHashMap<String, T>> historyMap,
                                                  Class<T> type) {
        try {
            LOG.warn("开始更新" + table);
            long start = System.currentTimeMillis();
            for (int i = 0; i < ApplicationConfig.THREAD_POOL_NUMBER(); i++) {
                historyMap.put(i, new ConcurrentHashMap<>());
            }
            CountDownLatch countDownLatch = new CountDownLatch(ApplicationConfig.THREAD_POOL_NUMBER());
//            long[] timeRange = getTimeRange(table);
            Long countTotal = getCountTotal(table);
            for (int i = 0; i < ApplicationConfig.THREAD_POOL_NUMBER(); i++) {
//                String sql = getQuerySql(timeRange, i, table);
                String sql = getQuerySql(countTotal, i, table);
                ReadHistoryArangoData<T> readHistoryArangoData = new ReadHistoryArangoData<>(arangoDBConnect, sql, historyMap, type, table, countDownLatch);
                threadPool.executor(readHistoryArangoData);
            }
            countDownLatch.await();
            long last = System.currentTimeMillis();
            LOG.warn("读取" + table + " arangoDB 共耗时：" + (last - start));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private Long getCountTotal(String table){
        long start = System.currentTimeMillis();
        Long cnt = 0L;
        String sql = "RETURN LENGTH("+table+")";
        try {
            ArangoCursor<Long> longs = arangoDBConnect.executorQuery(sql, Long.class);
            while (longs.hasNext()){
                cnt = longs.next();
            }
        }catch (Exception e){
            LOG.error(sql +"执行异常");
        }
        long last = System.currentTimeMillis();
        LOG.info(sql+" 结果："+cnt+" 执行时间："+(last-start));
        return cnt;
    }

    private String getQuerySql(Long cnt,int threadNumber, String table){
        long sepNum = cnt / ApplicationConfig.THREAD_POOL_NUMBER() + 1;
        long offsetNum = threadNumber * sepNum;
        return "FOR doc IN " + table + " limit "+offsetNum+","+sepNum+" RETURN doc";
    }


    private long[] getTimeRange(String table) {
        long minTime = 0L;
        long maxTime = 0L;
        long startTime = System.currentTimeMillis();
        String sql = "LET doc = (FOR doc IN " + table + " RETURN doc) return {max_time:MAX(doc[*].FIRST_FOUND_TIME),min_time:MIN(doc[*].FIRST_FOUND_TIME)}";
        switch (ApplicationConfig.ARANGO_TIME_LIMIT_TYPE()) {
            case 0:
                ArangoCursor<BaseDocument> timeDoc = arangoDBConnect.executorQuery(sql, BaseDocument.class);
                try {
                    if (timeDoc != null) {
                        while (timeDoc.hasNext()) {
                            BaseDocument doc = timeDoc.next();
                            maxTime = Long.parseLong(doc.getAttribute("max_time").toString()) + ApplicationConfig.THREAD_POOL_NUMBER();
                            minTime = Long.parseLong(doc.getAttribute("min_time").toString());
                        }
                    } else {
                        LOG.warn("获取ArangoDb时间范围为空");
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
                break;
            case 1:
                maxTime = ApplicationConfig.READ_ARANGO_MAX_TIME();
                minTime = ApplicationConfig.READ_ARANGO_MIN_TIME();
                break;
            default:
        }
        long lastTime = System.currentTimeMillis();
        LOG.warn(sql + "\n查询最大最小时间用时：" + (lastTime - startTime));
        return new long[]{minTime, maxTime};

    }

    private String getQuerySql(long[] timeRange, int threadNumber, String table) {
        long minTime = timeRange[0];
        long maxTime = timeRange[1];
        long diffTime = (maxTime - minTime) / ApplicationConfig.THREAD_POOL_NUMBER();
        long maxThreadTime = minTime + (threadNumber + 1) * diffTime;
        long minThreadTime = minTime + threadNumber * diffTime;
        return "FOR doc IN " + table + " filter doc.FIRST_FOUND_TIME >= " + minThreadTime + " and doc.FIRST_FOUND_TIME <= " + maxThreadTime + " " + ApplicationConfig.ARANGODB_READ_LIMIT() + " RETURN doc";
    }

}