#include "stack.h"
#include <cstdio>

Stack::Stack(size_t size) {
	capacity = size;
	data = new api_packet[capacity];
	top = -1;
}

Stack::~Stack() {
	delete[] data;
}

bool Stack::isEmpty() {
	return top == -1;
}

bool Stack::isFull() {
	return top == capacity - 1;
}

bool Stack::push(const api_packet &item) {
	if (isFull()) {
	    return false; // Stack overflow
    }
	data[++top] = item;
	return true;
}

bool Stack::pop(api_packet &item) {
	if (isEmpty()) {
		return false; // Stack underflow 
	}
	item = data[top--];
	return true;
}

bool Stack::peek(api_packet &item) {
	if (isEmpty()) {
		return false; // Stack is empty
	}
	item = data[top];
	return true;
}

size_t Stack::size() {
	return top + 1;
}

size_t Stack::getCapacity() { 
    return capacity;
}