CleanCode-GildedRoseKata/Inventory.java

public class Inventory {
    private Item[] items;

    public Inventory(Item[] items) {
        super();
        this.items = items;
    }

    public void updateQuality() {
        for (int i = 0; i < items.length; i++) { // each if/else handles each specific item
            if (items[i].getName().equals("Sulfuras, Hand of Ragnoros")) {
                continue;
            }
            if (items[i].getName().equals("Aged Brie")) {
                updateAgedBrie(i);
            } else updateNormalItem(i);
        }
    }

    public void updateAgedBrie(int i) {
        if (items[i].getSellIn() > 0 && items[i].getQuality() <= 49) {
            items[i].setQuality(items[i].getQuality() + 1);
        } else if (items[i].getSellIn() <= 0 && items[i].getQuality() <= 48) {
            items[i].setQuality(items[i].getQuality() + 2);
        }
    }

    public void updateNormalItem(int i) {
        if (items[i].getSellIn() > 0 && items[i].getQuality() <= 49) {
            items[i].setQuality(items[i].getQuality() - 1);
        } else if (items[i].getSellIn() <= 0 && items[i].getQuality() <= 48) {
            items[i].setQuality(items[i].getQuality() - 2);
        }
    }

    public void updateConjuredItem(int i) {
        if (items[i].getSellIn() > 0 && items[i].getQuality() <= 50){
            items[i].setQuality(items[i].getQuality() - 1);
        }
        if (items[i].getSellIn() <= 0 && items[i].getQuality() <= 50){
            items[i].setQuality(items[i].getQuality() - 4);
        }
    }
}