package com.deepchart.utils;

import com.deepchart.entity.StockDailyData;
import com.deepchart.entity.StockInfo;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.stereotype.Component;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 股票行情基本数据工具类
 */
@Component
public class StockDataUtil {
    private static final String STOCK_DATA_PREFIX = "https://api.homilychart.com/link";
    private static final String TOKEN = "8nkj4QBV1RPIb4CzoRTnbZi0+fEeMx8pywnIlrmTxdwROKkuwWqAWu9orpkpeXVqL98DPfeonNYpHv+mucA";
    private static final ObjectMapper objectMapper = new ObjectMapper();

    public List<StockDailyData> getStockData(StockInfo stock) {

        List<List<Object>> kLine20 = List.of();

        try {
            // 1. 构建请求URL
            String url = STOCK_DATA_PREFIX + "/api/superBrainData";

            // 2. 使用Map构造请求体参数
            Map<String, Object> requestBody = new HashMap<>();
            requestBody.put("brainPrivilegeState", 1);
            requestBody.put("marketList", "can,usa,hk,vi,sg,th,in,cn,gb,my");
            requestBody.put("market", stock.getMarket());
            requestBody.put("code", stock.getCode());

            // 3. 将Map转换为JSON字符串
            String jsonInputString = objectMapper.writeValueAsString(requestBody);

            // 4. 创建HTTP连接
            HttpURLConnection connection = (HttpURLConnection) new URL(url).openConnection();
            connection.setRequestMethod("POST");
            connection.setRequestProperty("Content-Type", "application/json");
            connection.setRequestProperty("token", TOKEN);
            connection.setDoOutput(true);

            // 5. 发送请求数据
            try (OutputStream os = connection.getOutputStream())  {
                byte[] input = jsonInputString.getBytes(StandardCharsets.UTF_8);
                os.write(input, 0, input.length);
            }

            // 6. 解析响应
            if (connection.getResponseCode() == 200) {
                try (BufferedReader br = new BufferedReader(
                        new InputStreamReader(connection.getInputStream(),  StandardCharsets.UTF_8))) {
                    StringBuilder response = new StringBuilder();
                    String responseLine;
                    while ((responseLine = br.readLine()) != null) {
                        response.append(responseLine.trim());
                    }

                    // 解析JSON响应
                    Map<String, Object> jsonResponse = objectMapper.readValue(response.toString(), Map.class);
                    Map<String, Object> data = (Map<String, Object>) jsonResponse.get("data");
                    Map<String, Object> brain = (Map<String, Object>) data.get("Brain");
                    kLine20 = (List<List<Object>>) brain.get("KLine20");
                }
            }

            // 7. 关闭连接
            connection.disconnect();

        } catch (Exception e) {
            e.printStackTrace();
        }

        List<StockDailyData> list = new ArrayList<>();

        for (List<Object> v : kLine20) {
            StockDailyData s = new StockDailyData();
            s.setDate(LocalDate.parse((String) v.get(0), DateTimeFormatter.ofPattern("yyyy/MM/dd")));
            s.setOpenPrice((double)v.get(1));
            s.setClosePrice((double)v.get(2));
            s.setLowPrice((double)v.get(3));
            s.setHighPrice((double)v.get(4));
            list.add(s);
        }

        return list;
    }
}