#include <vector>
#include <cstdint>
#include <cstdio>

typedef struct CPUData_ {
   unsigned long long int totalTime;
   unsigned long long int userTime;
   unsigned long long int systemTime;
   unsigned long long int systemAllTime;
   unsigned long long int idleAllTime;
   unsigned long long int idleTime;
   unsigned long long int niceTime;
   unsigned long long int ioWaitTime;
   unsigned long long int irqTime;
   unsigned long long int softIrqTime;
   unsigned long long int stealTime;
   unsigned long long int guestTime;

   unsigned long long int totalPeriod;
   unsigned long long int userPeriod;
   unsigned long long int systemPeriod;
   unsigned long long int systemAllPeriod;
   unsigned long long int idleAllPeriod;
   unsigned long long int idlePeriod;
   unsigned long long int nicePeriod;
   unsigned long long int ioWaitPeriod;
   unsigned long long int irqPeriod;
   unsigned long long int softIrqPeriod;
   unsigned long long int stealPeriod;
   unsigned long long int guestPeriod;
   float percent;
   int mhz;
   int temp;
} CPUData;

class CPUStats
{
public:
   CPUStats();
   ~CPUStats();
   bool Init();
   bool Updated()
   {
      return m_updatedCPUs;
   }

   bool UpdateCPUData();
   bool UpdateCoreMhz();
   bool UpdateCpuTemp();
   bool GetCpuFile();
   double GetCPUPeriod() { return m_cpuPeriod; }

   const std::vector<CPUData>& GetCPUData() const {
      return m_cpuData;
   }
   const CPUData& GetCPUDataTotal() const {
      return m_cpuDataTotal;
   }
private:
   unsigned long long int m_boottime = 0;
   std::vector<CPUData> m_cpuData;
   CPUData m_cpuDataTotal {};
   std::vector<int> m_coreMhz;
   double m_cpuPeriod = 0;
   bool m_updatedCPUs = false; // TODO use caching or just update?
   bool m_inited = false;
   FILE *m_cpuTempFile = nullptr;
};

extern CPUStats cpuStats;