package com.nq.utils.redis;

import com.alibaba.fastjson2.JSONObject;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.gson.Gson;
import com.nq.enums.EStockType;
import com.nq.pojo.DataStockBean;
import com.nq.pojo.Stock;
import com.nq.pojo.StockRealTimeBean;
import com.nq.utils.PropertiesUtil;
import com.nq.utils.stock.sina.StockApi;
import org.apache.http.util.TextUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.math.BigDecimal;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Map;
import java.util.concurrent.locks.ReentrantLock;


public class RedisKeyUtil {
    private static final Logger log = LoggerFactory.getLogger(RedisKeyUtil.class);
    /**
     * 缓存股票数据源到redis
     * */
    public  static void  setCaCheKeyBaseStock(EStockType eStockType,  DataStockBean dataStockBean){
         RedisShardedPoolUtils.set(RedisKeyConstant.RK_BASE_STOCK+":"+eStockType.getCode()+":"+dataStockBean.getId(),
                 new Gson().toJson(dataStockBean));

    }

    /**
     * 获取股票数据
     * */
    public static DataStockBean getCacheBaseStock(Stock stock){
        String cacheBaseData = RedisShardedPoolUtils.get(RedisKeyConstant.RK_BASE_STOCK+":"+stock.getStockType()+":"+stock.getStockCode());
        return  new Gson().fromJson(cacheBaseData, DataStockBean.class);
    }


    /**
     * 保存实时数据到redis
     * */
    public static void setCacheRealTimeStock(EStockType eStockType, StockRealTimeBean stockRealTimeBean){
        RedisShardedPoolUtils.set(RedisKeyConstant.RK_REAL_TIME_STOCK+":"+eStockType.getCode()+":"+stockRealTimeBean.getPid(),
                new Gson().toJson(stockRealTimeBean));
    }

    public static StockRealTimeBean getCacheRealTimeStock(Stock stock){
        StockRealTimeBean stockRealTimeBean = null;
        String cacheBaseData = RedisShardedPoolUtils.get(RedisKeyConstant.RK_REAL_TIME_STOCK+":"+stock.getStockType()+":"+stock.getStockCode());


        if(!TextUtils.isEmpty(cacheBaseData)){
            stockRealTimeBean = new Gson().fromJson(cacheBaseData, StockRealTimeBean.class);
        }
        if(stockRealTimeBean == null){
            String s = doPost(stock.getStockCode());
            Map<String, Object> stringObjectMap = jsonToMap(s);
            stockRealTimeBean = new StockRealTimeBean();
            stockRealTimeBean.setPcp(stringObjectMap.get("ChgPct").toString());
            stockRealTimeBean.setLast(stringObjectMap.get("Last").toString());
            stockRealTimeBean.setHigh(stringObjectMap.get("High").toString());
            stockRealTimeBean.setLow(stringObjectMap.get("Low").toString());
            stockRealTimeBean.setBid(stringObjectMap.get("Id").toString());
            stockRealTimeBean.setPc(stringObjectMap.get("PrevClose").toString());
            stockRealTimeBean.setAsk(stringObjectMap.get("Ask").toString());
        }
        stockRealTimeBean.setPcp(stockRealTimeBean.getPcp().replace("%",""));
        return  stockRealTimeBean;

    }

    public static Map<String, Object> jsonToMap(String json) {
        ObjectMapper objectMapper = new ObjectMapper();
        try {
            Object[] array = objectMapper.readValue(json, Object[].class);
            Gson gson = new Gson();
            String s = gson.toJson(array[0]);
            Map<String, Object> map = objectMapper.readValue(s, Map.class);
            return map;
        } catch (JsonProcessingException e) {
            throw new RuntimeException(e);
        }
    }

    private static final ReentrantLock lock = new ReentrantLock();
    private static String lastResult = null;
    private static long lastExecuteTime = 0;
    private static final long MIN_INTERVAL_MS = 3000;

    public static String doPost(String pid) {
        // 快速检查缓存
        long currentTime = System.currentTimeMillis();
        if (lastResult != null && (currentTime - lastExecuteTime) < MIN_INTERVAL_MS) {
            return lastResult;
        }

        // 需要获取锁执行新请求
        return executeWithLock(pid);
    }

    private static String executeWithLock(String pid) {
        String apiUrl = PropertiesUtil.getProperty("JS_IN_HTTP_URL") + "stock?key=" + PropertiesUtil.getProperty("JS_IN_KEY");

        lock.lock();
        try {
            // 双检锁：再次检查缓存
            long currentTime = System.currentTimeMillis();
            if (lastResult != null && (currentTime - lastExecuteTime) < MIN_INTERVAL_MS) {
                return lastResult;
            }

            // 执行POST请求
            String result = null;
            try {
                URL url = new URL(apiUrl);
                HttpURLConnection connection = (HttpURLConnection) url.openConnection();

                connection.setRequestMethod("POST");
                connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
                connection.setDoOutput(true);

                String postData = "pid=" + pid;

                try (OutputStream os = connection.getOutputStream()) {
                    byte[] input = postData.getBytes("utf-8");
                    os.write(input, 0, input.length);
                }

                BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
                String inputLine;
                StringBuilder response = new StringBuilder();

                while ((inputLine = in.readLine()) != null) {
                    response.append(inputLine);
                }
                in.close();

                result = response.toString();

                // 更新缓存
                lastResult = result;
                lastExecuteTime = System.currentTimeMillis();

            } catch (Exception e) {
                e.printStackTrace();
                // 请求失败时返回缓存
                if (lastResult != null) {
                    return lastResult;
                }
            }

            return result;

        } finally {
            lock.unlock();
        }
    }


    public  static  void setCacheCompanies(Stock stock,String companiesInfo){
        RedisShardedPoolUtils.set(RedisKeyConstant.RK_COMPANY_INFO+":"+stock.getStockType()+":"+stock.getStockCode(),
                new Gson().toJson(companiesInfo));
    }


    public static JSONObject getCacheCompanies(Stock stock){
       String  companiesInfo =  RedisShardedPoolUtils.get(RedisKeyConstant.RK_COMPANY_INFO+":"+stock.getStockType()+":"+stock.getStockCode());
       if(companiesInfo.isEmpty()){
           return  null;
       }
       return  JSONObject.parseObject(companiesInfo);
    }



}