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.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
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);
        }
    }

    // 缓存条目类
    private static class CacheEntry {
        String result;
        long lastExecuteTime;

        CacheEntry(String result, long lastExecuteTime) {
            this.result = result;
            this.lastExecuteTime = lastExecuteTime;
        }
    }

    // 按pid存储缓存
    private static final Map<String, CacheEntry> cacheMap = new ConcurrentHashMap<>();

    // 按pid存储锁对象，实现细粒度锁
    private static final Map<String, ReentrantLock> lockMap = new ConcurrentHashMap<>();

    private static final long MIN_INTERVAL_MS = 3000;

    public static String doPost(String pid) {
        // 1. 快速检查缓存
        long currentTime = System.currentTimeMillis();
        CacheEntry cached = cacheMap.get(pid);

        if (cached != null && (currentTime - cached.lastExecuteTime) < MIN_INTERVAL_MS) {
            return cached.result;
        }

        // 2. 获取该pid对应的锁
        ReentrantLock pidLock = lockMap.computeIfAbsent(pid, k -> new ReentrantLock());

        // 3. 加锁执行
        pidLock.lock();
        try {
            // 4. 双重检查
            currentTime = System.currentTimeMillis();
            cached = cacheMap.get(pid);

            if (cached != null && (currentTime - cached.lastExecuteTime) < MIN_INTERVAL_MS) {
                return cached.result;
            }

            // 5. 执行实际请求
            String result = executePostRequest(pid);

            // 6. 更新缓存
            if (result != null) {
                cacheMap.put(pid, new CacheEntry(result, System.currentTimeMillis()));
            } else if (cached != null) {
                // 请求失败，返回旧缓存
                return cached.result;
            }

            return result;

        } finally {
            pidLock.unlock();
        }
    }

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

        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);
            connection.setConnectTimeout(5000);
            connection.setReadTimeout(10000);

            String postData = "pid=" + pid;

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

            // 读取响应
            try (BufferedReader in = new BufferedReader(
                    new InputStreamReader(connection.getInputStream()))) {

                StringBuilder response = new StringBuilder();
                String inputLine;
                while ((inputLine = in.readLine()) != null) {
                    response.append(inputLine);
                }

                return response.toString();
            }

        } catch (Exception e) {
            e.printStackTrace();
            return null; // 返回null表示请求失败
        }
    }

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