SystemMonitor.h

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#pragma once

#include "Label.h"
#include "Signals.h"
#include "Timer.h"

namespace rose {

    enum CpuTimeIndex : std::size_t {
        USER = 0, NICE, SYSTEM, IDLE, IOWAIT, IRQ, SOFTIRQ, STEAL, GUEST, GUEST_NICE, ARRAY_SIZE
    };

    class SystemData {
    protected:
        SignalSerialNumber mSignalSerialNumber{};    

        bool mHasTemperatureDevice{true};       

        void readCPUTemperature();

        void readProcessUsage();

        void cpuCount();

        std::array<uint64_t,CpuTimeIndex::ARRAY_SIZE> mCpuTime{};       
        std::array<uint64_t,CpuTimeIndex::ARRAY_SIZE> mPastCpuTime{};   

        int mCpuCount{0};        
        float mCpuTimeUse{};     
        float mCpuTotalTime{};   
        int mProcTimeUse{};      
        int mProcTimeStart{};    

        float mUsage{0.f};           
        float mTemperature{0.f};     

        static constexpr std::string_view ProcSelfStat = "/proc/self/stat";     
        static constexpr std::string_view ProcStat = "/proc/stat";              
        static constexpr std::string_view ProcCpuInfo = "/proc/cpuinfo";        

    public:
        SystemData();
        ~SystemData() = default;

        std::shared_ptr<Slot<int>> rxTrigger;   

        using TemperatureSignal = std::array<float,3>;  
        Signal<TemperatureSignal> txTemperature{};      

        using ProcessSignal = std::array<float,3>;      
        Signal<ProcessSignal> txProcess{};              

        using SystemSignal = std::array<float,3>;       
        Signal<SystemSignal> txSystem{};
    };

    class SystemMonitor : public Row {
    protected:
        void readCPUTemperature();

        void readProcessUsage();

        void cpuCount();

        color::RGBA mCPUWarning;                
        color::RGBA mCPUAlert;                  
        bool mHasTemperatureDevice{true};       
        std::shared_ptr<Label> mTemperature;    
        std::shared_ptr<Label> mUsage;          
        int mCpuCount{0};                       
        int cpuTimeUse{},                       
            cpuTimeStart{0};                    
        int procTimeUse{},                      
            procTimeStart{0};                   

        SecondTickPtr mSecondTick{};            

    public:
        static constexpr std::string_view ProcSelfStat = "/proc/self/stat";     
        static constexpr std::string_view ProcStat = "/proc/stat";              
        static constexpr std::string_view ProcCpuInfo = "/proc/cpuinfo";        

        void initializeComposite() override;    

        std::shared_ptr<Slot<int>> rxTrigger;   

        SystemMonitor() = delete;               

        ~SystemMonitor() override = default;    

        explicit SystemMonitor(SecondTickPtr secondTick);
    };
}