stockitem.cpp

// File:        stockitem.cpp
// Date:        2016-02-27
// Description: Implementation of a StockItem class

#include "stockitem.h"

// Default constructor

StockItem::StockItem() {
    sku = 0;
    description = "";
    price = 0;
    stock = 0;
}

// Parameterized constructor
// Need to specify SKU, description, and price.
// Stock is defaulted to 0;
// Assume parameters are valid

StockItem::StockItem(int skuid, string desc, double p) {
    sku = skuid;
    if (sku > 99999) sku = sku % 100000;
    if (sku < 10000) sku += 10000; // force sku to 5 digits

    if (desc.length() > 30)
        description = desc.substr(0, 29);
    else
        description = desc;
    price = p;
    stock = 0;
}

// Accessors

int StockItem::GetSKU() const {
    return sku;
}

string StockItem::GetDescription() const {
    return description;
}

double StockItem::GetPrice() const {
    return price;
}

int StockItem::GetStock() const {
    return stock;
}

// Mutators
// boolean return values - return true for successful update, false if argument is invalid (i.e. negative price/stock/SKU)

bool StockItem::SetDescription(string newdesc) {
    if (newdesc.length() > 30)
        description = newdesc.substr(0, 29);
    else
        description = newdesc;
    return true;
}

bool StockItem::SetPrice(double newprice) {
    if (newprice >= 0) {
        price = newprice;
        return true;
    } else return false;
}

bool StockItem::SetStock(int amount) {
    if (amount >= 0) {
        stock = amount;
        return true;
    } else return false;
}

bool StockItem::operator==(const StockItem& item) const {
    return (sku == item.GetSKU());
}

bool StockItem::operator!=(const StockItem& item) const {
    return !(*this == item);
}

bool StockItem::operator>(const StockItem& item) const {
    return (sku > item.GetSKU());
}

bool StockItem::operator<(const StockItem& item) const {
    return (sku < item.GetSKU());
}

bool StockItem::operator>=(const StockItem& item) const {
    return !(*this < item);
}

bool StockItem::operator<=(const StockItem& item) const {
    return !(*this > item);
}

StockItem& StockItem::operator=(const StockItem& item) {
    if (this != &item) {
        this->sku = item.sku;
        this->description = item.description;
        this->price = item.price;
        this->stock = item.stock;
    }
    return *this;
}