#pragma once
#include <map>
#include <mix_cc/json.h>
#include <string>
struct VarsCache {

public:
  void init(const std::vector<std::string> &tags, size_t _pv_num = 6) {
    m_tags = tags;
    tag_num = tags.size();
    pv_num = _pv_num;
    // 预分配所有 key
    p_keys.resize(tag_num);
    tag_keys.resize(tag_num);
    pv_keys.resize(tag_num); // 每个元素是 pv_num 个 key 的数组

    for (size_t i = 0; i < tag_num; ++i) {
      auto &x = tags[i];
      int item_index = stoi(x.substr(3));
      p_keys[i] = "p" + std::to_string(item_index);
      tag_keys[i] = "tag" + std::to_string(item_index);

      // 预分配 pv 滑动窗口的 key
      pv_keys[i].resize(pv_num);
      for (int j = 0; j < pv_num; ++j) {
        pv_keys[i][j] =
            "pv" + std::to_string(item_index) + "_" + std::to_string(j);
      }
    }
  }
  void init(size_t _tag_num, size_t _pv_num = 6) {

    tag_num = _tag_num;
    pv_num = _pv_num;
    // 预分配所有 key
    p_keys.resize(tag_num);
    tag_keys.resize(tag_num);
    pv_keys.resize(tag_num); // 每个元素是 pv_num 个 key 的数组
    m_tags.resize(tag_num);
    for (size_t i = 0; i < tag_num; ++i) {

      int item_index = i + 1;
      m_tags[i] = "tag" + std::to_string(item_index);
      p_keys[i] = "p" + std::to_string(item_index);
      tag_keys[i] = "tag" + std::to_string(item_index);

      // 预分配 pv 滑动窗口的 key
      pv_keys[i].resize(pv_num);
      for (int j = 0; j < pv_num; ++j) {
        pv_keys[i][j] =
            "pv" + std::to_string(item_index) + "_" + std::to_string(j);
      }
    }
  }
  std::string dumps() {
    mix_cc::json js1;
    js1["tag_num"] = tag_num;
    js1["pv_num"] = pv_num;
    js1["p_keys"] = p_keys;
    js1["tag_keys"] = tag_keys;
    js1["pv_keys"] = pv_keys;
    js1["m_tags"] = m_tags;
    return js1.dump();
  }

public:
  size_t tag_num;
  size_t pv_num;
  std::vector<std::string> p_keys;
  std::vector<std::string> tag_keys;
  std::vector<std::vector<std::string>> pv_keys; // [tag_index][window_index]
  std::vector<std::string> m_tags;
};