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https://github.com/emilybache/GildedRose-Refactoring-Kata.git
synced 2026-02-04 09:11:39 +00:00
94 lines
2.7 KiB
Python
Executable File
94 lines
2.7 KiB
Python
Executable File
# -*- coding: utf-8 -*-
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class Item:
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degradation_per_day: int = 1
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quality_min_value: int = 0
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quality_max_value: int = 50
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def __init__(self, name, sell_in, quality):
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assert quality >= self.quality_min_value
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assert quality <= self.quality_max_value
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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 __new__(cls, name, sell_in, quality):
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# If we are directly creating an Item, redirect to a mapped subclass
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if cls is Item and name in items_mappings:
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return super().__new__(items_mappings[name])
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return super().__new__(cls)
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def _update_quality(self, multiplier: int = 1):
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degradation = self.degradation_per_day * multiplier
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self.quality = max(self.quality_min_value, self.quality - degradation)
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self.quality = min(self.quality_max_value, self.quality)
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def _update_sell_in(self):
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self.sell_in -= 1
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def daily_step(self):
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if self.quality < 0:
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return
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# Decrement sell_in first, then apply quality changes based on new sell_in
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self._update_sell_in()
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if self.sell_in < 0:
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self._update_quality(2)
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else:
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self._update_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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class AgedBrie(Item):
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name: str = "Aged Brie"
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degradation_per_day: int = -1
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class BackstagePasses(Item):
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name: str = "Backstage passes to a TAFKAL80ETC concert"
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def _update_quality(self, multiplier: int = 1):
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if self.sell_in <= 0:
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self.quality = 0
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elif 0 < self.sell_in < 6:
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self.quality += 3
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elif 6 < self.sell_in < 11:
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self.quality += 2
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else:
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self.quality += 1
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self.quality = min(50, self.quality)
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class Sulfuras(Item):
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name: str = "Sulfuras, Hand of Ragnaros"
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quality_max_value: int = 80
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quality_min_value: int = 80
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def __init__(self, name, sell_in, quality):
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super().__init__(name, 0, 80)
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def daily_step(self):
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# Legendary item: does not change in quality or sell_in
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pass
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class Conjured(Item):
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name: str = "Conjured"
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degradation_per_day: int = Item.degradation_per_day * 2
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items_mappings: dict[str, type[Item]] = {
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"Aged Brie": AgedBrie,
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"Backstage passes to a TAFKAL80ETC concert": BackstagePasses,
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"Sulfuras, Hand of Ragnaros": Sulfuras,
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"Conjured Mana Cake": Conjured,
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}
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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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item.daily_step() |