import json
from pathlib import Path
import logging

log = logging.getLogger("rc.refstor")


class DiskStoredRefs:
	__file: Path = None
	__refs: dict = {}

	def __init__(self, file: Path):
		log.debug(f"Initializing disk stored refs: {file.as_posix()}")
		self.__file = file
		self.__refs = {}

		if self.__file.is_file():
			log.debug(f"Loading from file")
			self.__refs = dict(json.loads(self.__file.read_text()))

	def __persist(self):

		self.__file.write_text(json.dumps(sorted(self.__refs.items())))

	def keys(self):
		return list(self.__refs.keys())

	def count(self):
		log.debug(f"DiskStoredRefs: {len(self.__refs)} items")
		return len(self.__refs)

	def __len__(self):
		log.debug(f"DiskStoredRefs: {len(self.__refs)} items")
		return len(self.__refs)

	def get(self, key):
		log.debug(f"DiskStoredRefs: getting key {key}")
		return self.__refs.get(key)

	def remove(self, key) -> bool:
		if key not in self.__refs:
			log.debug(f"DiskStoredRefs: {key} not found for deletion")
			return False
		log.debug(f"DiskStoredRefs: Deleting key {key}")
		del self.__refs[key]
		self.__persist()
		return True

	def update(self, key: str, value: str):
		log.debug(f"DiskStoredRefs: update {key} => {value}")
		self.__refs[key] = value
		self.__persist()