Implement CLI

pytchat/cli/arguments.py

@@ -0,0 +1,39 @@
+from typing import Optional, Dict, Union, List
+from .singleton import Singleton
+
+'''
+This modules refer to 
+Petter Kraabøl's Twitch-Chat-Downloader
+https://github.com/PetterKraabol/Twitch-Chat-Downloader
+(MIT License)
+'''
+
+class Arguments(metaclass=Singleton):
+    """
+    Arguments singleton
+    """
+
+    class Name:
+        VERSION: str = 'version'
+        OUTPUT: str = 'output'
+        VIDEO: str = 'video'
+
+    def __init__(self, 
+        arguments: Optional[Dict[str, Union[str, bool, int]]] = None):
+        """
+        Initialize arguments
+        :param arguments: Arguments from cli 
+        (Optional to call singleton instance without parameters)
+        """
+
+        if arguments is None:
+            print('Error: arguments were not provided')
+            exit()
+
+        self.print_version: bool = arguments[Arguments.Name.VERSION]
+        self.output: str = arguments[Arguments.Name.OUTPUT]
+        self.video_ids: List[int] = []
+        # Videos
+        if arguments[Arguments.Name.VIDEO]:
+            self.video_ids = [video_id 
+                for video_id in arguments[Arguments.Name.VIDEO].split(',')]