#include <stdio.h>
#include <stdlib.h> 
#include "customer.h"
#include "queue.h"
#include <assert.h>
//#include "customer.h"

void Queue_Init(queue* q, int Size)
{
	q->pcust = (Customer*) malloc(sizeof(Customer) * Size);
	q->size = Size;
	q->count = 0;
	q->end= 0;
	q->start = 0;
}

int Queue_Add(queue* q, Customer c)
{
	int i = q->end;
	int r = (((double) rand())/((double)RAND_MAX + (double)1) * 2);
	sleep(r);
	q->end++;
	Customer* ind = &q->pcust[i];
	ind->id = c.id;
	ind->delay = c.delay;
	ind->type = c.type;
	if(q->end == q->size)
		q->end = 0;
	q->count++;
	assert(q->count <= q->size);
	return 1;
}
Customer Queue_Remove(queue* q)
{	
	int i = q->start;
	int r = (((double) rand())/((double)RAND_MAX + (double)1) * 3) + 2;
	sleep(r);
	q->start++;
	Customer ret = q->pcust[i];
	if(q->start == q->size)
		q->start = 0;
	q->count--;
	assert(q->count >= 0);
	return ret;
}
int Get_Count(queue* q)
{
	assert(q->count >= 0);
	return q->count;
}