OpenSource/GildedRose-Refactoring-Kata
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Feat: Conjured items degrade twice as quickly in quality

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This commit is contained in:
Jesper 2022-04-13 18:33:36 +02:00
parent 2b3d1ed7dc
commit b62e86157f
1 changed files with 14 additions and 1 deletions
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15
TypeScript/app/gilded-rose.ts
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@ -24,11 +24,15 @@ export class GildedRose {
}
}
function updateItems(items: readonly Readonly<Item>[]): readonly Readonly<Item>[] {
function updateItems(items: readonly Readonly<Item | ConjuredItem>[]): readonly Readonly<Item | ConjuredItem>[] {
return items
.map(item => ({ ...item, quality: updateItemQuality(item) }))
.map(item => ({ ...item, sellIn: updateItemSellIn(item) }))
.map(item => ({ ...item, quality: updateExpiredItemQuality(item) }))
.map((item, i) => {
const previousItem = items[i]
return ({ ...item, quality: updateConjuredItemQuality(previousItem, item) })
})
}
function updateItemQuality({ name, quality, sellIn, ...rest }: Readonly<Item>): number {
@ -73,4 +77,13 @@ function decrementQuality({ quality }: Readonly<Pick<Item, 'quality'>>): number
function incrementQuality({ quality }: Readonly<Pick<Item, 'quality'>>): number {
if (quality >= 50) return quality
return quality + 1
}
function updateConjuredItemQuality(previousItem: Item, currentItem: Item | ConjuredItem): number {
const isConjured = 'conjured' in currentItem && currentItem.conjured
if (!isConjured) return currentItem.quality
const diff = previousItem.quality - currentItem.quality
if (diff >= 0) return currentItem.quality
return previousItem.quality - (diff * 2)
}