#include <iostream>
#include <cstdlib>
#include <time.h>
#include <queue>
#include "myconst.h"
#include "event.h"
#include <iomanip>

using namespace std;

typedef queue<process> procqueue;

bool newEvent();
process makeNewEvent(int & , int);
void printQ(procqueue &);

int main () {
     procqueue Q;
     int clock=0;
     int maxpid = 0;
     process p;
     int i;

     srand48(time(NULL));

     for(clock=0;clock<40;clock++) {
    
         cout << "Clock:" << setw(3) <<  clock   << endl;
         if (newEvent() ) {
            p = makeNewEvent(maxpid, clock);
            Q.push(p);
            cout << "\tAdded " ;
            cout << p << endl;

         }
         if (!Q.empty()) {
            // let an event run;
            p = Q.front();
            Q.pop();
            p.useTicks(1);

            cout << "\tRan   " << p;
            if (!p.done() ) {
               Q.push(p);
            } else {
               cout << " DONE! ";
               cout << p.ticksNeeded() << "/" << clock-p.startTime()+1 ;
            }

            cout << endl;
            printQ(Q);
         } else {
            cout << "\tCPU IDLE" << endl;
         }

     }
}

bool newEvent() {
    return(drand48()*100 > NEWPROCPCT);
};

process makeNewEvent(int & maxpid, int clock){

     maxpid++;
     process rv(clock, maxpid);
     return(rv);

};

void printQ(procqueue & Q) {

     procqueue TQ;
     process p;
     bool first = true;

     if (!Q.empty()) {
        cout << "\tCurrent Queue: (";

        while (!Q.empty()) {
            p= Q.front();
            Q.pop();
            TQ.push(p);
            if (first) {
               first = false;
            } else {
               cout << ", ";
            }
           cout <<  p.Pid();
        }
        cout << ")"<< endl;
        while(!TQ.empty()) {
            p= TQ.front();
            TQ.pop();
            Q.push(p);
        }
     }
}