mirror of
https://github.com/emilybache/GildedRose-Refactoring-Kata.git
synced 2026-02-04 17:21:38 +00:00
88 lines
2.4 KiB
Python
Executable File
88 lines
2.4 KiB
Python
Executable File
# -*- coding: utf-8 -*-
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from dataclasses import dataclass
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from typing import ClassVar, Dict, Type
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class GildedRose(object):
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def __init__(self, items):
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self.items = items
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def update_quality(self):
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for item in self.items:
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updater = ItemUpdater.update_for(item)
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updater.update()
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class Item:
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def __init__(self, name, sell_in, quality):
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self.name = name
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self.sell_in = sell_in
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self.quality = quality
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def __repr__(self):
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return "%s, %s, %s" % (self.name, self.sell_in, self.quality)
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@dataclass()
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class ItemUpdater:
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item: Item
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_registry: ClassVar[Dict[str, Type["ItemUpdater"]]] = {}
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@classmethod
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def register(cls, name: str):
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def deco(subcls: Type["ItemUpdater"]) -> Type["ItemUpdater"]:
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cls._registry[name] = subcls
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return subcls
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return deco
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@classmethod
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def update_for(cls, item: Item) -> "ItemUpdater":
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updater_cls = cls._registry.get(item.name, cls)
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return updater_cls(item)
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def update(self):
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self.item.sell_in = self.item.sell_in - 1
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if self.item.quality > 0:
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self.item.quality = self.item.quality - 1
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if self.item.sell_in < 0 and self.item.quality > 0:
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self.item.quality = self.item.quality - 1
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@ItemUpdater.register("Aged Brie")
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class AgedBrieUpdater(ItemUpdater):
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def update(self):
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if self.item.quality < 50:
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self.item.quality = self.item.quality + 1
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self.item.sell_in = self.item.sell_in - 1
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if self.item.sell_in < 0:
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if self.item.quality < 50:
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self.item.quality = self.item.quality + 1
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@ItemUpdater.register("Sulfuras, Hand of Ragnaros")
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class SulfurasUpdater(ItemUpdater):
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def update(self):
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pass # Legendary item, never changes
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@ItemUpdater.register("Backstage passes to a TAFKAL80ETC concert")
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class BackstagePassUpdater(ItemUpdater):
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def update(self):
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if self.item.sell_in < 1:
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self.item.quality = 0 # Concert passed, quality drops to 0
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elif self.item.sell_in < 6:
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self.item.quality = min(50, self.item.quality + 3) # 5 days or less: +3
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elif self.item.sell_in < 11:
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self.item.quality = min(50, self.item.quality + 2) # 10 days or less: +2
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else:
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self.item.quality = min(50, self.item.quality + 1) # More than 10 days: +1
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self.item.sell_in = self.item.sell_in - 1
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