feat: just did the stuff

cool_domain/cache.py

@@ -0,0 +1,48 @@
+import json
+import pathlib
+import typing
+
+T = typing.TypeVar("T")
+
+
+class Cache:
+    __slots__ = ["__data", "__filepath", "__no_load"]
+
+    def __init__(self, filepath: str, no_load: bool) -> None:  # noqa: FBT001
+        self.__filepath = pathlib.Path(filepath)
+        self.__no_load = no_load
+        self.__data: dict[str, typing.Any] | None = None
+
+    def load(self) -> None:
+        if not self.__no_load and self.__filepath.exists():
+            self.__data = json.loads(self.__filepath.read_text())
+        else:
+            self.__data = {}
+
+    def write(self) -> None:
+        self.__filepath.write_text(json.dumps(self.__data))
+
+    def __enter__(self) -> typing.Self:
+        self.load()
+        return self
+
+    def __exit__(self, *_: object) -> None:
+        self.write()
+
+    def has(self, key: str) -> bool:
+        return self.__data is not None and key in self.__data
+
+    def get(self, key: str) -> typing.Any:
+        if self.__data is not None and key in self.__data:
+            return self.__data[key]
+        return None
+
+    def set(self, key: str, value: typing.Any) -> None:
+        if self.__data is not None:
+            self.__data[key] = value
+            self.write()
+
+    def get_or_set(self, key: str, callback: typing.Callable[[], T]) -> T:
+        if not self.has(key):
+            self.set(key, callback())
+        return self.get(key)