from pathlib import Path
import config

class CacheHandler:

	def __init__(self):
		self.rootDir = Path(__file__).parent.absolute()
		self.cacheDir = '{root}/cache'.format(root=self.rootDir)

	def getCache(self, key):
		if key in config.CACHE[key]: return config.CACHE[key]
		keyPath = '{cache}/{key}.txt'.format(cache=self.cacheDir, key=key)

		try:
			with open(keyPath, 'r') as f:
				value = f.readlines()[0]
			config.CACHE[key] = value
			return value

		except IOError:
			return None

	def setCache(self, key, value):
		keyPath = '{cache}/{key}.txt'.format(cache=self.cacheDir, key=key)

		try:
			with open(keyPath, 'w+') as f:
				f.write(value)

			config.CACHE[key] = value
			return value

		except IOError:
			return None