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line_notify_bot.py
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line_notify_bot.py
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# -*- coding: utf-8 -*-
"""line_notify_bot.py
Send messages, images, or stickers to a LINE group via LINE Notify.
This bot can't accept messages, i.e., is not interactive.
Access token can be obtrained from: https://notify-bot.line.me/ja/
Sticker and its package IDs can be chosen from: https://devdocs.line.me/files/sticker_list.pdf
"""
from pathlib import Path
import requests
def main():
import argparse
parser = argparse.ArgumentParser(
prog='line_notify_bot.py',
usage='python line_notify_bot.py -a path/to/access_token -m <messsage> -i path/to/image -sp <sticker package ID> -s <sticker ID>',
description='Send messages, images, or stickers to a LINE group via LINE Notify.',
epilog='end',
add_help=True,
)
parser.add_argument(
'accesstoken',
help='path to a file in which an access token is written',
action='store',
)
parser.add_argument(
'message',
help='message to be sent',
action='store',
)
parser.add_argument(
'-i', '--image',
help='image to be sent',
action='store',
required=False,
default=None,
)
parser.add_argument(
'-sp', '--stickerpackage',
help='sticker package ID',
type=int,
action='store',
required=False,
default=None,
)
parser.add_argument(
'-s', '--sticker',
help='sticker ID',
type=int,
action='store',
required=False,
default=None,
)
args = parser.parse_args()
access_token_path = args.accesstoken
message = args.message
image_path = args.image
sticker_package_id = args.stickerpackage
sticker_id = args.sticker
"""
message = 'test'
image_path = 'test.png'
sticker_package_id = 1
sticker_id = 13
"""
with open(access_token_path, 'r') as fin:
access_token = fin.read().strip()
bot = LINENotifyBot(access_token=access_token)
bot.send(
message,
image=image_path,
sticker_package_id=sticker_package_id,
sticker_id=sticker_id
)
class LINENotifyBot:
"""Sends message, image, and sticker to a LINE group.
Access token can be obtrained from: https://notify-bot.line.me/ja/
Args:
access_token (str):
Access token necessary to tap LINE Notify API.
Attributes:
__headers (dict): Necessary to send request to LINE Notify.
API_URL (str): URL of LINE Notify API.
"""
API_URL = 'https://notify-api.line.me/api/notify'
def __init__(self, access_token):
self.__headers = {'Authorization': 'Bearer ' + access_token}
def send(self, message, image=None, sticker_package_id=None, sticker_id=None):
"""Sends message, image, and sticker to a LINE group designated by access token.
Sticker and its package IDs can be chosen from: https://devdocs.line.me/files/sticker_list.pdf
Args:
message (str): Sent message. Maximum length is 1000.
If is None, message can't be sent.
In this situation, image and sticker also can't be sent.
image (str or pathlib.Path): Path to image to send.
Available extentions are only png or jpeg.
There is a limitation to the number of images
which can be sent in one hour (1,000 images by default).
Defaults to None.
sticker_package_id (int): ID of sticker package.
If set to None, only message is sent.
If set to unregistered integer,
even message can't be sent.
Defaults to None.
sticker_id (int): ID of sticker.
If set to None, only message is sent.
If set to unregistered integer,
even message can't be sent.
Defaults to None.
Returns:
response (requests.models.Response): Response of the requests.post.
"""
if not message:
raise ValueError('message must not be None.')
if not isinstance(message, str):
raise TypeError(f'message must be str. But input message type was: {type(message)}')
if sticker_package_id:
if isinstance(sticker_package_id, int):
pass
elif isinstance(sticker_package_id, str):
if sticker_package_id.isdecimal():
sticker_package_id = int(sticker_package_id)
else:
raise ValueError(f'sticker_package_id can be an arabic decimal str, but the input was: {sticker_package_id}.')
else:
raise TypeError('sticker_package_id must be int or arabic decimal str, but the input type was: {type(sticker_package_id)}')
if not sticker_id:
raise ValueError('sticker_package_id is input, but sticker_id is not input.')
if sticker_id:
if isinstance(sticker_id, int):
pass
elif isinstance(sticker_id, str):
if sticker_id.isdecimal():
sticker_id = int(sticker_id)
else:
raise ValueError(f'sticker_id can be an arabic decimal str, but the input was: {sticker_id}.')
else:
raise TypeError('sticker_id must be int or arabic decimal str, but the input type was: {type(sticker_id)}')
if not sticker_package_id:
raise ValueError('sticker_id is input, but sticker_package_id is not input.')
payload = {
'message': message,
'stickerPackageId': sticker_package_id,
'stickerId': sticker_id,
}
files = {}
if image:
if isinstance(image, str):
image_path = Path(image)
elif isinstance(image, Path):
image_path = image
else:
raise TypeError(f'image must be str or pathlib.Path. But input image type was: {type(image)}')
if not image_path.exists():
raise ValueError(f'image file does not exist: {image_path}')
extention = image_path.suffix
if not extention:
raise ValueError('image must not be a directory. But the input was: {image_path}')
elif extention not in ['.png', '.jpg']:
raise ValueError(f'image must have .png or .jpg as its extention. But {extention} file was input.')
files = {'imageFile': open(str(image_path), 'rb')}
response = requests.post(
LINENotifyBot.API_URL,
headers=self.__headers,
data=payload,
files=files,
)
if not response.ok:
raise Exception('The message, image, and sticker can not be sent for some reason. Maybe you input wrong sticker (or sticker package) ID.')
return response
if __name__ == '__main__':
main()