#include <iostream>
#include <windows.h>
#include <time.h>

#define TIMER_ANZAHL 5
#define T5sec (5)

using namespace std;

//EVENTS
volatile uint16_t eventkette = 0;

void setEvent(uint16_t ev) {
    eventkette |= ev;
}

uint8_t eventIsSet(uint16_t ev) {
    uint8_t temp = ev & eventkette;
    if (temp)
        return 1;

    return 0;
}

void clearEvent(uint16_t ev) {
    uint16_t nev = ~ev;
    eventkette &= nev;
}

void printevent(){
    cout << eventkette << endl;
}

//TIMER
typedef struct {
    volatile int m_time;
    volatile int m_startTime;
    volatile uint16_t m_ev;
    volatile uint8_t m_start;
} timer_struct;

volatile timer_struct timer[TIMER_ANZAHL] = { 0 };

void setTimer(uint8_t timernumber, int time, uint16_t ev) {
    timer[timernumber].m_time = time;
    timer[timernumber].m_ev = ev;
    timer[timernumber].m_start = 0;
    cout << "Timer is set for event " << ev << " time: " << time << endl;
}

void startTimer(uint16_t timernumber) {
    timer[timernumber].m_start = 1;
    time_t now = time(0);
    timer[timernumber].m_startTime = now;
    cout << "Timer " << timernumber << " has been started" << endl;
}

void cancelTimer(uint16_t timernumber) {
    timer[timernumber].m_start = 0;
    cout << "Timer " << timernumber << " has been stopped!" << endl;
}

void TaskTimer() {
    //getsystime
    time_t now;
    cout << "Systime = " << now << endl;

    while (1) {
        for (uint8_t i = 0; i < TIMER_ANZAHL; i++) {

            if (timer[i].m_start == 1) {
                cout << "erstes If in TaskTimer" << endl;
                if (timer[i].m_startTime + timer[i].m_time <= (now = time(0))) {
                    cout << "Systime = " << now << endl;
                    timer[i].m_start = 0;
                    setEvent(timer[i].m_ev);
                    cout << "zweites If in TaskTimer" << endl;
                }
            }
        }
    }
}

int main(){

    setEvent(4);
    printevent();
    clearEvent(4);
    printevent();

    int eventtest = 0;
    setEvent(4);
    eventtest = eventIsSet(4);
    cout << "event is set: " << eventtest << endl;
    clearEvent(4);
    eventtest = eventIsSet(4);
    cout << "event is set: " << eventtest << endl;

    setTimer(1,T5sec,1); //Timer für event 1
    startTimer(1); //Start timer für event 1
    //cancelTimer(1); //Cancel timer für event 1

    //Timer while 1
    TaskTimer();

    return 0;
}