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#include "Shop.h"
#include <cstring>
#include <utility>
void Shop::free() {
delete[] sales;
}
void Shop::copyFrom(const Shop& other) {
salesAlloc = other.salesAlloc;
salesCount = other.salesCount;
sales = new Sale[salesAlloc];
for (unsigned i = 0; i < salesCount; ++i)
sales[i] = other.sales[i];
}
void Shop::resize() {
salesAlloc = salesAlloc == 0 ? 8 : salesAlloc * 2;
Sale* salesLarger = new Sale[salesAlloc];
for (unsigned i = 0; i < salesCount; ++i)
salesLarger[i] = sales[i];
delete[] sales;
sales = salesLarger;
}
Shop::Shop() : Inventory(), sales(), salesCount(), salesAlloc()
{ }
Shop::~Shop() {
free();
}
Shop::Shop(const Shop& other) : Inventory(other) {
copyFrom(other);
}
Shop& Shop::operator=(const Shop& other) {
if (this != &other) {
Inventory::operator=(other);
free();
copyFrom(other);
}
return *this;
}
Shop::Shop(Shop&& other) : Inventory(std::move(other)) {
sales = other.sales;
salesCount = other.salesCount;
salesAlloc = other.salesAlloc;
other.sales = nullptr;
other.salesAlloc = other.salesCount = 0;
}
Shop& Shop::operator=(Shop&& other) {
if (this != &other) {
Shop::operator=(std::move(other));
free();
sales = other.sales;
salesCount = other.salesCount;
salesAlloc = other.salesAlloc;
other.sales = nullptr;
other.salesAlloc = other.salesCount = 0;
}
return *this;
}
bool Shop::Purchase(const Sale& sale) {
unsigned productIndex = 0;
while (productIndex < productsCount &&
strcmp(sale.productName, products[productIndex].name) != 0)
{
++productIndex;
}
if (productIndex == productsCount || products[productIndex].quantity >= sale.quantity)
return false;
if (salesCount >= salesAlloc)
resize();
sales[salesCount++] = sale;
products[productIndex].quantity -= sale.quantity;
return true;
}
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