GildedRose-Refactoring-Kata/python/gilded_rose.py

69 lines
2.5 KiB
Python
Executable File

# -*- coding: utf-8 -*-
class GildedRose(object):
__AGED_BRIE = "Aged Brie"
__BACKSTAGE_PASSES = "Backstage passes to a TAFKAL80ETC concert"
__SULFURAS = "Sulfuras, Hand of Ragnaros"
__CONJURED = "Conjured Mana Cake"
def __init__(self, items):
self.items = items
def update_quality(self):
for item in self.items:
self.update_item_quality(item)
def update_item_quality(self, item):
qualityIncrease = 1
isExpired = item.sell_in < 0
qualityDecrease = self.determine_degrate_quality_rate(item,isExpired)
doesDegradeQaulity = item.name != GildedRose.__AGED_BRIE and item.name != GildedRose.__BACKSTAGE_PASSES and item.name != GildedRose.__SULFURAS
if doesDegradeQaulity:
self.adjust_quality(item, qualityDecrease)
if item.name == GildedRose.__AGED_BRIE:
qualityIncrease = 2 if isExpired else 1
self.adjust_quality(item, qualityIncrease)
if item.name == GildedRose.__BACKSTAGE_PASSES:
self.update_backstagepasses_quality(item, isExpired, qualityIncrease)
if item.name != GildedRose.__SULFURAS:
item.sell_in = item.sell_in - 1
# BAckstage Passes logic to update the item quality based on number of days
def update_backstagepasses_quality(self, item, isExpired, qualityIncrease):
self.adjust_quality(item, qualityIncrease)
if item.sell_in < 11:
self.adjust_quality(item, qualityIncrease)
if item.sell_in < 6:
self.adjust_quality(item, qualityIncrease)
if isExpired:
item.quality = item.quality - item.quality
# Logic to determine the Quality Decrease rate based on Expired date and conjured item
def determine_degrate_quality_rate(self, item, isExpired):
qualityDecrease = -1 if item.name != GildedRose.__CONJURED else -2
return qualityDecrease * 2 if isExpired else qualityDecrease
# Update the quality item value if the quality value is within the range 0 to 50
def adjust_quality(self, item, quality_increase_decrease):
new_quality = item.quality + quality_increase_decrease
if new_quality >= 0 and new_quality <= 50:
item.quality = new_quality
class Item:
def __init__(self, name, sell_in, quality):
self.name = name
self.sell_in = sell_in
self.quality = quality
def __repr__(self):
return "%s, %s, %s" % (self.name, self.sell_in, self.quality)