🚧 Add up, down and config

src/entity/config.py

@@ -0,0 +1,49 @@
+import json
+import os
+from pathlib import Path
+
+from configparser import *
+import typing
+
+
+class Config(object):
+
+    _CONFIG_FILE: typing.Optional[str] = None
+    _CONFIG: typing.Optional[dict] = None
+
+    def __init__(self, config_file=None):
+        if config_file is None:
+            config_file = "config.json"
+
+        # Check that specified config file exists
+        if not os.path.exists(config_file):
+            Path(config_file).touch()
+            with open(config_file, 'w') as configfile:
+                json.dump({"session": []}, configfile)
+
+        Config._CONFIG_FILE = config_file
+
+        with open(config_file, 'r') as f:
+            Config._CONFIG = json.load(f)
+
+    @staticmethod
+    def save():
+        with open(Config._CONFIG_FILE, 'w') as configfile:
+            json.dump(Config._CONFIG, configfile)
+
+    @staticmethod
+    def get_config_file() -> str:
+        return Config._CONFIG_FILE
+
+    @staticmethod
+    def get_required_env_var(env_var: str) -> str:
+        if env_var not in os.environ:
+            raise Exception(f"Please set the {env_var} environment variable")
+        return os.environ[env_var]
+
+    @staticmethod
+    def get_required_config_var(config_var: str) -> str:
+        assert Config._CONFIG
+        if config_var not in Config._CONFIG:
+            raise Exception(f"Please set the {config_var} variable in the config file {Config._CONFIG_FILE}")
+        return Config._CONFIG[config_var]