/**
 * @file RuleStatShm.h
 * @brief 共享内存 map，用于将后台规则数据提供给页面使用
 * @author your name (you@domain.com)
 * @version 0.1
 * @date 2023-10-18
 *
 * Copyright: Baosight Co. Ltd.
 * DO NOT COPY/USE WITHOUT PERMISSION
 *
 */
#pragma once
#include <mutex>
#include "shm_header.h"
namespace RuleStatShm {

using namespace ShmHeader;

const static std::string dir_path = "/users/dsc/shm";
const static std::string shm_file = "MapRuleStat";  ///<映射文件名
const double data_size = 500;                       ///< 数据大小 MB
const size_t stat_size_min = 1000;   ///<统计样本最小批处理量
const size_t stat_size_max = 10000;  ///<统计样本最大储存量

static managed_mapped_file_t obj_mapped_file(
    bipc::open_or_create, (dir_path + "/" + shm_file + "_boost.mmap").c_str(),
    mix_cc::data_size::MB(data_size));

static void_allocator default_allocator(
    obj_mapped_file.get_segment_manager());  ///<默认分配器

static char_string key_object("", default_allocator);
static char_string key_delete("", default_allocator);

///<定义数据
struct RuleStat {
  /** 动态数据 规则触发更新 **/
  double alarm_value = 0;    ///<最新报警值
  double current_value = 0;  ///<当前值
  double limit_up = 0;       ///<上限
  double limit_down = 0;     ///<下限
  vector_s items;            ///<数据项
  vector_d stat_values;      ///<统计值，用于cron
  bool fetch_mark = false;   ///<取数据标记

  /** 静态数据 定时更新 **/
  double running_time = 0;                  ///<累积的运行时间
  int64_t shear_times = 0;                  ///<剪切次数
  int64_t alarm_times = 0;                  ///<报警次数
  bipc::string last_alarm_time = "无报警";  ///<上次报警时间
  bipc::string dev_coder;                   ///<设备编码

  RuleStat()
      : items(default_allocator),
        stat_values(default_allocator) {}  ///<共享内存的内存分配
  /** 数据操作 **/
  mix_cc::json invert2json() {
    mix_cc::json js1;
    /** 动态数据 规则触发更新 **/
    js1["alarm_value"] = alarm_value;      ///<最新报警值
    js1["current_value"] = current_value;  ///<当前值
    js1["limit_up"] = limit_up;            ///<上限阈值
    js1["limit_down"] = limit_down;        ///<下限阈值
    js1["items"] = items;                  ///< tag点

    /** 静态数据 定时更新 **/
    js1["running_time"] = running_time;        ///<统计的运行时间
    js1["shear_times"] = shear_times;          ///<剪切次数
    js1["alarm_times"] = alarm_times;          ///<报警次数
    js1["last_alarm_time"] = last_alarm_time;  ///<上次报警时间
    js1["dev_coder"] = dev_coder;              ///<设备编码
    return js1;
  }
  bool update_dynamic(const RuleStat& value) {
    alarm_value = value.alarm_value;
    current_value = value.current_value;
    limit_up = value.limit_up;
    limit_down = value.limit_down;
    items = value.items;
  }
  bool update_static(const RuleStat& value) {
    running_time = value.running_time;
    shear_times = value.shear_times;
    alarm_times = value.alarm_times;
    last_alarm_time = value.last_alarm_time;
    dev_coder = value.dev_coder;
  }
};

///< key 是string的情况
typedef std::pair<const char_string, RuleStat> pair_s;  ///< key-value
typedef bipc::node_allocator<pair_s, mapped_segment_manager_t>
    allocator_s;  ///<映射文件
typedef std::less<char_string> less_s;
typedef bipc::map<char_string, RuleStat, less_s, allocator_s> MapRuleStat_s;
typedef MapRuleStat_s::iterator map_iter_s;

///<定义数据操作
struct MapRuleStat {
 private:
  MapRuleStat_s* p_msg_map = obj_mapped_file.find_or_construct<MapRuleStat_s>(
      shm_file.c_str())(less_s(), obj_mapped_file.get_segment_manager());
  std::mutex local_mutext{};  ///<共享锁

 public:
  /**
   * @brief 更新 key对应的整个value
   * @param  key              My Param doc
   * @param  value            My Param doc
   * @return true
   * @return false
   */
  bool update(const std::string& key, const RuleStat& value) {
    std::lock_guard<std::mutex> guard(local_mutext);
    try {
      key_object = key.c_str();
      p_msg_map->operator[](key_object) = value;
      return true;
    } catch (const std::exception& e) {
      return false;
    }
  }
  /**
   * @brief 更新  key对应value的动态 或 静态数据
   * @param  key
   * @param  value
   * @param  is_dynamic 是否更新动态数据
   * @return true
   * @return false
   */
  bool update_dynamic(const std::string& key, const RuleStat& value,
                      bool is_dynamic = true) {
    std::lock_guard<std::mutex> guard(local_mutext);
    try {
      key_object = key.c_str();
      if (p_msg_map->find(key_object) != p_msg_map->end()) {
        if (is_dynamic) {
          p_msg_map->operator[](key_object).update_dynamic(value);
          return true;
        } else {
          p_msg_map->operator[](key_object).update_static(value);
          return true;
        }
      }
      p_msg_map->operator[](key_object) = value;
      return true;
    } catch (const std::exception& e) {
      return false;
    }
  }

  /**
   * @brief 删除 key-value
   * @param  key
   * @return true
   * @return false
   */
  bool delete_data(const std::string& key) {
    std::lock_guard<std::mutex> guard(local_mutext);
    try {
      key_delete = key.c_str();
      if (p_msg_map->find(key_delete) != p_msg_map->end()) {
        p_msg_map->erase(key_delete);
      }
      return true;
    } catch (const std::exception& e) {
      return false;
    }
  }

  size_t size() {
    std::lock_guard<std::mutex> guard(local_mutext);
    return p_msg_map->size();
  }

  bool empty() {
    std::lock_guard<std::mutex> guard(local_mutext);
    return p_msg_map->empty();
  }
  /**
   * @brief 统计数据存储
   * @param  key              My Param doc
   * @param  value            My Param doc
   * @return true
   * @return false
   */
  bool add_stat_value(const std::string& key, const double& value) {
    try {
      std::lock_guard<std::mutex> guard(local_mutext);
      key_object = key.c_str();
      if (p_msg_map->operator[](key_object).fetch_mark) {
        p_msg_map->operator[](key_object).stat_values.clear();
        p_msg_map->operator[](key_object).fetch_mark = false;
      }
      if (p_msg_map->operator[](key_object).stat_values.size() <
          stat_size_max) {
        p_msg_map->operator[](key_object).stat_values.push_back(value);
      }
      return true;
    } catch (const std::exception& e) {
      return false;
    }
  }
  /**
   * @brief 获取统计数据
   * @param  key              ruleid
   * @param  value      数据结果
   * @return bool
   */
  bool get_stat_value(const std::string& key, RuleStat& value) {
    try {
      std::lock_guard<std::mutex> guard(local_mutext);
      key_object = key.c_str();
      if (!p_msg_map->operator[](key_object).fetch_mark &&
          p_msg_map->operator[](key_object).stat_values.size() >
              stat_size_min) {
        value.stat_values = p_msg_map->operator[](key_object).stat_values;
        p_msg_map->operator[](key_object).fetch_mark = true;
        return true;
      }
      return false;
    } catch (const std::exception& e) {
      return false;
    }
  }

  /** find 共享内存数据中， vector<key> 存在的数据
   * @brief
   * @param  ruleid           My Param doc
   * @return std::vector<std::string>
   */
  std::vector<std::string> find_rule_id(
      const std::vector<std::string>& ruleid) {
    std::lock_guard<std::mutex> guard(local_mutext);
    std::vector<std::string> res;
    if (p_msg_map->empty()) {
      return {};
    }
    for (auto iter1 = p_msg_map->begin(); iter1 != p_msg_map->end(); iter1++) {
      auto resV = std::find(ruleid.begin(), ruleid.end(), iter1->first);
      if (resV != ruleid.end()) {
        res.push_back(iter1->first);
      }
    }
    return res;
  }

  /** find 共享内存数据中 vector<key> 不存在的数据
   * @brief
   * @param  ruleid           My Param doc
   * @return std::vector<std::string>
   */
  std::vector<std::string> find_no_rule_id(
      const std::vector<std::string>& ruleid) {
    std::lock_guard<std::mutex> guard(local_mutext);
    std::vector<std::string> res;
    if (p_msg_map->empty()) {
      return {};
    }
    for (auto iter1 = p_msg_map->begin(); iter1 != p_msg_map->end(); iter1++) {
      auto resV = std::find(ruleid.begin(), ruleid.end(), iter1->first);
      if (resV == ruleid.end()) {
        res.push_back(iter1->first);
      }
    }
    return res;
  }

  /**
   * @brief 将数据转换成 string
   * @return std::string;失败为 "ERROR"
   */
  std::string GetDataJson() {
    std::lock_guard<std::mutex> guard(local_mutext);
    try {
      mix_cc::json js1;
      for (auto iter = p_msg_map->begin(); iter != p_msg_map->end(); iter++) {
        js1[iter->first] = iter->second.invert2json();
      }
      return js1.dump();
    } catch (const std::exception& e) {
      return "ERROR";
    }
  }
};

}  // namespace RuleStatShm