Implement CLI

pytchat/cli/__init__.py

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+import argparse
+import os
+from pathlib import Path
+from typing import List, Callable
+from .arguments import Arguments
+
+from .. exceptions import InvalidVideoIdException, NoContentsException
+from .. processors.tsv_archiver import TSVArchiver
+from .. processors.html_archiver import HTMLArchiver
+from .. tool.extract.extractor import Extractor
+from .. tool.videoinfo import VideoInfo
+from .. import __version__
+
+'''
+Most of CLI modules refer to 
+Petter Kraabøl's Twitch-Chat-Downloader
+https://github.com/PetterKraabol/Twitch-Chat-Downloader
+(MIT License)
+
+'''
+def main():
+    # Arguments 
+    parser = argparse.ArgumentParser(description=f'pytchat v{__version__}')
+    parser.add_argument('-v', f'--{Arguments.Name.VIDEO}', type=str,
+         help='Video IDs separated by commas without space')
+    parser.add_argument('-o', f'--{Arguments.Name.OUTPUT}', type=str,
+         help='Output directory (end with "/")', default='./')
+    parser.add_argument(f'--{Arguments.Name.VERSION}', action='store_true',
+         help='Settings version')
+    Arguments(parser.parse_args().__dict__)
+    if Arguments().print_version:
+        print(f'pytchat v{__version__}')
+        return
+
+    # Extractor
+    if Arguments().video_ids:
+        for video_id in Arguments().video_ids:
+            try:
+                info = VideoInfo(video_id)
+                print(f"Extracting...\n"
+                      f" video_id: {video_id}\n"
+                      f" channel:  {info.get_channel_name()}\n"
+                      f" title:    {info.get_title()}")
+                Extractor(video_id, 
+                  processor = HTMLArchiver(Arguments().output+video_id+'.html')
+                ).extract()
+                print("Extraction end.\n")
+            except (InvalidVideoIdException, NoContentsException) as e:
+                print(e)
+        return
+    parser.print_help()

pytchat/cli/arguments.py

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+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(',')]

pytchat/cli/singleton.py

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+'''
+This modules refer to 
+Petter Kraabøl's Twitch-Chat-Downloader
+https://github.com/PetterKraabol/Twitch-Chat-Downloader
+(MIT License)
+'''
+class Singleton(type):
+    """
+    Abstract class for singletons
+    """
+    _instances = {}
+
+    def __call__(cls, *args, **kwargs):
+        if cls not in cls._instances:
+            cls._instances[cls] = super().__call__(*args, **kwargs)
+        return cls._instances[cls]
+
+    def get_instance(cls, *args, **kwargs):
+        cls.__call__(*args, **kwargs)