Code refactored
This commit is contained in:
BreadTube
parent
b80e4f7745
commit
d5b3436aec
3 changed files with 247 additions and 213 deletions
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@ -1,530 +0,0 @@
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from __future__ import annotations
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from dataclasses import asdict, dataclass, is_dataclass
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from enum import Enum
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import logging
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import operator
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from pathlib import Path
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import json
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import random
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import re
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import time
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import tomllib
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from typing import Any
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import urllib.error
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import urllib.request
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import traceback
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from .api import Api, ApiAction, ApiVersion
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from .config import Config
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from .logger import create_logger
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from .objects import (
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Attachment, ChannelCategory, ChannelType, FileMime, HTTPHeaders, Message, MessageReference, MessageReferenceType,
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Overwrite, OverwriteType, Permissions, Role, TextChannel, User)
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from .youtube_manager import YoutubeManager
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from .youtube_subscription import SUBSCRIPTION_FILE_COLUMNS, SubscriptionHelper, Subscriptions
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class ApiEncoder(json.JSONEncoder):
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def default(self, o):
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if is_dataclass(o):
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return asdict(o) # type: ignore
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if isinstance(o, Enum):
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return o.value
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return super().default(o)
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class DiscordManager:
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DEFAULT_MESSAGE_LIST_LIMIT = 50
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INIT_MESSAGE = ('Bot initialized.\nThis is the current configuration used.\n'
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'You can upload a new one to update the configuration.')
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MAX_DOWNLOAD_SIZE: int = 50_000
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MIN_API_VERSION = 9
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@dataclass
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class RateLimit:
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remaining: int
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next_reset: float
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class Task(Enum):
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DELETE_MESSAGES = 1
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SCAN_BOT_CHANNEL = 2
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INIT_SUBS = 3
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@staticmethod
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def _get_code_version() -> str:
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pyproject_path = Path(__file__).parents[1] / 'pyproject.toml'
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if not pyproject_path.exists():
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raise RuntimeError('Cannot current bot version')
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return tomllib.loads(pyproject_path.read_text(encoding='utf-8'))['project']['version']
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def __init__(self, bot_token: str, guild_id: int, yt_api_key: str, config: Config | None = None,
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log_level: int = logging.INFO) -> None:
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self.config = config or Config()
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self.guild_id = guild_id
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self._bot_token = bot_token
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self.logger = create_logger('breadtube', log_level, stdout=True)
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self.rate_limit = self.RateLimit(remaining=1, next_reset=0)
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self.version = self._get_code_version()
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self.tasks: list[tuple[DiscordManager.Task, float, Any]] = []
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self.logger.info('Retrieving bot user')
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self.bot_user = self.get_current_user()
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self.logger.info('Retrieving guild roles before init')
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self.guild_roles: list[Role] = self.list_roles()
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bot_role: Role | None = None
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everyone_role: Role | None = None
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for role in self.guild_roles:
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if role.name == self.config.bot_role:
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bot_role = role
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elif role.name == '@everyone':
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everyone_role = role
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if bot_role is None:
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raise RuntimeError('No BreadTube role found')
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if everyone_role is None:
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raise RuntimeError('No everyone role found')
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self.bot_role: Role = bot_role
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self.everyone_role: Role = everyone_role
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categories, text_channel = self.list_channels()
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self.guild_text_channels: list[TextChannel] = text_channel
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self.guild_categories: list[ChannelCategory] = categories
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self.init_message: Message | None = None
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bot_channel: TextChannel | None = None
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for _ in range(self.config.bot_channel_init_retries):
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bot_channel = self.init_bot_channel()
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if bot_channel is not None:
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break
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time.sleep(5)
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if bot_channel is None:
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raise RuntimeError("Couldn't initialize bot channel/role/permission")
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self.bot_channel: TextChannel = bot_channel
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self._yt_subscriptions: Subscriptions = {}
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self._scan_bot_channel()
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self.tasks.append((
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self.Task.SCAN_BOT_CHANNEL, time.time() + self.config.bot_channel_scan_interval, None))
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self.yt_manager = YoutubeManager(api_key=yt_api_key, logger=self.logger)
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self.logger.info('Bot initialized')
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def _update_rate_limit(self, headers: HTTPHeaders):
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for header_key in ['x-ratelimit-remaining', 'x-ratelimit-reset']:
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if header_key not in headers:
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self.logger.info('Warning: no "%s" found in headers', header_key)
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return
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self.rate_limit.remaining = int(headers['x-ratelimit-remaining'])
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self.rate_limit.next_reset = float(headers['x-ratelimit-reset'])
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self.logger.debug('Updated rate limit: %s', self.rate_limit)
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if self.rate_limit.remaining <= 0:
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sleep_time = self.rate_limit.next_reset - time.time()
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if sleep_time > 0:
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self.logger.debug('Rate limit: sleeping %.03f second', sleep_time)
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time.sleep(sleep_time)
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def _send_request(self, api_action: ApiAction, endpoint: str, api_version: ApiVersion = ApiVersion.V10,
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data: bytes | None = None, upload_files: list[tuple[str, FileMime, bytes]] | None = None,
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expected_code: int = 200) -> tuple[HTTPHeaders, dict | list | None]:
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if api_version.value < self.MIN_API_VERSION:
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self.logger.warning(
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'Warning: using deprecated API version %d (minimum non deprecated is %d)',
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api_version, self.MIN_API_VERSION)
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url = f'https://discord.com/api/v{api_version.value}{endpoint}'
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self.logger.debug('Discord API Request: %s %s', api_action.value, url)
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boundary: str = ''
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if upload_files:
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boundary = f'{random.randbytes(16).hex()}'
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data = (f'--{boundary}\r\nContent-Disposition: form-data; name="payload_json"\r\n'
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'Content-Type: application/json\r\n\r\n'.encode() + data
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+ f'\r\n--{boundary}'.encode()) if data else b''
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for file_index, (name, mime, content) in enumerate(upload_files):
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data += (f'\r\n--{boundary}\r\nContent-Disposition: form-data; name="files[{file_index}]";'
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f' filename="{name}"\r\nContent-Length: {len(content)}'
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f'\r\nContent-Type: {mime.value}\r\n\r\n').encode() + content
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data += f'\r\n--{boundary}--'.encode()
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request = urllib.request.Request(url, data=data)
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request.method = api_action.value
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request.add_header('User-Agent', f'BreadTube (v{self.version})')
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request.add_header('Accept', 'application/json')
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if upload_files:
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request.add_header('Content-Type', f'multipart/form-data; boundary={boundary}')
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else:
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request.add_header('Content-Type', 'application/json')
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request.add_header('Authorization', f'Bot {self._bot_token}')
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try:
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with urllib.request.urlopen(request, timeout=self.config.request_timeout) as response:
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if response.status != expected_code:
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raise RuntimeError(
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f'Unexpected code {response.status} (expected: {expected_code}) -> {response.read().decode()}')
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body = response.read()
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headers = dict(response.getheaders())
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self._update_rate_limit(headers)
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return headers, json.loads(body.decode()) if body else None
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except urllib.error.HTTPError as error:
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raise RuntimeError(
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f'HTTP error calling API ({url}): {error}:\nHeaders:\n{error.headers}Body:\n{error.read()}') from error
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except urllib.error.URLError as error:
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raise RuntimeError(f'URL error calling API ({url}): {error}') from error
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except TimeoutError as error:
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raise RuntimeError(f'Timeout calling API ({url}): {error}') from error
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def _download_attachment(self, attachment: Attachment, expected_code: int = 200) -> tuple[HTTPHeaders, bytes]:
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request = urllib.request.Request(attachment.url)
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request.add_header('User-Agent', f'BreadTube (v{self.version})')
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request.add_header('Authorization', f'Bot {self._bot_token}')
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try:
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with urllib.request.urlopen(request, timeout=self.config.request_timeout) as response:
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if response.status != expected_code:
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raise RuntimeError(
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f'Unexpected code while downloading attachment {response.status} (expected: {expected_code})')
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return dict(response.getheaders()), response.read()
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except urllib.error.HTTPError as error:
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raise RuntimeError(
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f'HTTP error downloading attachment ({attachment}):'
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f' {error}:\nHeaders:\n{error.headers}Body:\n{error.read()}') from error
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except urllib.error.URLError as error:
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raise RuntimeError(f'URL error downloading attachment ({attachment}): {error}') from error
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def init_bot_channel(self) -> TextChannel | None:
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for channel in self.guild_text_channels:
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if channel.name == self.config.bot_channel:
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self.logger.info('Found breadtube bot channel')
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for perm in channel.permission_overwrites:
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if perm.id == self.bot_role.id:
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if not perm.allow | Permissions.VIEW_CHANNEL:
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self.logger.info('BreadTube bot cannot view BreadTube channel: permission missing')
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return None
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self.logger.info('BreadTube channel permission OK')
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break
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return channel
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self.logger.info('Creating breadtube bot channel')
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return self.create_text_channel({
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'name': self.config.bot_channel,
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'permission_overwrites': [
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Overwrite(self.everyone_role.id, OverwriteType.ROLE, allow=Permissions.NONE,
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deny=Permissions.VIEW_CHANNEL),
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Overwrite(self.bot_role.id, OverwriteType.ROLE, allow=Permissions.VIEW_CHANNEL,
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deny=Permissions.NONE)]
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})
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def _get_bot_channel_messages(self) -> list[Message]:
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messages_id_delete_task: set[int] = set()
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for task_type, _, task_params in self.tasks:
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if task_type == self.Task.DELETE_MESSAGES:
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messages_id_delete_task.update(message.id for message in task_params)
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last_message_id: int | None = None
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messages: list[Message] = []
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while True:
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message_batch = self.list_text_channel_messages(self.bot_channel, after_id=last_message_id)
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messages.extend([m for m in message_batch if m.id not in messages_id_delete_task])
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if len(message_batch) < self.DEFAULT_MESSAGE_LIST_LIMIT:
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break
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last_message_id = message_batch[-1].id
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return messages
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def _scan_bot_channel(self): # noqa: PLR0915
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messages = self._get_bot_channel_messages()
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init_message_found = False
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new_config: Config | None = None
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new_subscriptions: Subscriptions | None = None
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delayed_delete: dict[int, Message] = {}
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immediate_delete: dict[int, Message] = {}
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for message in messages:
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if init_message_found:
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self.logger.debug('Marking message for immediate deletion (init found): %s', message)
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immediate_delete[message.id] = message
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continue
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if len(message.attachments) <= 0:
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self.logger.debug('Marking message for immediate deletion (no attachment): %s', message)
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immediate_delete[message.id] = message
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continue
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if message.author.id == self.bot_user.id:
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self.logger.debug('Found init message')
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# If same init message: nothing to do
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if self.init_message is not None and message.id == self.init_message.id:
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continue
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# Loading init message content
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has_error = False
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for attachment in message.attachments:
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try:
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_, content = self._download_attachment(attachment)
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if new_config is None and content.startswith(b'config'):
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try:
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self.config = Config.from_str(content.decode())
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except RuntimeError as error:
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self.logger.error('Cannot load config from init message: %s', error)
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has_error = True
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if new_subscriptions is None and content.startswith(SUBSCRIPTION_FILE_COLUMNS[0]):
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try:
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subscriptions = SubscriptionHelper.read_text(content)
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if set(subscriptions.keys()) != set(self._yt_subscriptions.keys()):
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SubscriptionHelper.update_subscriptions(
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new=subscriptions, previous=self._yt_subscriptions)
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self._yt_subscriptions = subscriptions
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self.tasks.append((DiscordManager.Task.INIT_SUBS, time.time() + 1, None))
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except RuntimeError as error:
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self.logger.error('Invalid init subscriptions file: %s', error)
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has_error = True
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except Exception as error:
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self.logger.error('Error downloading attachment: %s', error)
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has_error = True
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if not has_error:
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self.init_message = message
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init_message_found = True
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continue
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self.logger.debug('Reading attachment')
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attachment = message.attachments[0]
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if attachment.size > self.MAX_DOWNLOAD_SIZE:
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self.logger.debug('Marking message for immediate deletion (attachment too big): %s', message)
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immediate_delete[message.id] = message
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continue
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try:
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_, content = self._download_attachment(attachment)
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if content.startswith(b'config') and new_config is None:
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try:
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config = Config.from_str(content.decode())
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if config != self.config: # New config to update to
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new_config = config
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self.logger.debug('Marking new config message for immediate deletion: %s', message)
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immediate_delete[message.id] = message
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continue
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except RuntimeError as error:
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self.logger.info('Invalid config file: %s', error)
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bot_message = self.create_message(self.bot_channel, {
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'content': str(error),
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'message_reference': MessageReference(
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type=MessageReferenceType.DEFAULT,
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message_id=message.id,
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channel_id=self.bot_channel.id,
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guild_id=None,
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fail_if_not_exists=None)})
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delayed_delete[bot_message.id] = bot_message
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delayed_delete[message.id] = message
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continue
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if content.startswith(SUBSCRIPTION_FILE_COLUMNS[0]):
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try:
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subscriptions = SubscriptionHelper.read_text(content)
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if set(subscriptions.keys()) != set(self._yt_subscriptions.keys()):
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new_subscriptions = subscriptions
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self.logger.debug('Marking new subscriptions message for immediate deletion: %s', message)
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immediate_delete[message.id] = message
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continue
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except RuntimeError as error:
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self.logger.info('Invalid subscriptions file: %s', error)
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bot_message = self.create_message(self.bot_channel, {
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'content': str(error),
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'message_reference': MessageReference(
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type=MessageReferenceType.DEFAULT,
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message_id=message.id,
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channel_id=self.bot_channel.id,
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guild_id=None,
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fail_if_not_exists=None)})
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delayed_delete[bot_message.id] = bot_message
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delayed_delete[message.id] = message
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continue
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except Exception as error:
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self.logger.error('Error downloading attachment: %s', error)
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if new_config is not None:
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self.logger.info('Loading config: %s', new_config)
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self.config = new_config
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if new_subscriptions is not None:
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self.logger.info('Loading subscriptions: %s', new_subscriptions)
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SubscriptionHelper.update_subscriptions(new=new_subscriptions, previous=self._yt_subscriptions)
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self._yt_subscriptions = new_subscriptions
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self.tasks.append((DiscordManager.Task.INIT_SUBS, time.time() + 1, None))
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# New init message is needed, previous need to be deleted
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if (new_config is not None or new_subscriptions is not None) and self.init_message is not None:
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immediate_delete[self.init_message.id] = self.init_message
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self.init_message = None
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# Init message absent or deleted
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if self.init_message is None:
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assert self.config is not None
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self.init_message = self.create_message(
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self.bot_channel, {'content': self.INIT_MESSAGE},
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upload_files=[
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('config.txt', FileMime.TEXT_PLAIN, self.config.to_str().encode()),
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('subscriptions.csv', FileMime.TEXT_CSV, SubscriptionHelper.generate_text(self._yt_subscriptions))
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])
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for message in immediate_delete.values():
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try:
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self.delete_message(message)
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except RuntimeError as error:
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self.logger.error('Error deleting after bot channel scan (immediate): %s', error)
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if delayed_delete:
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self.tasks.append((
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DiscordManager.Task.DELETE_MESSAGES,
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time.time() + self.config.bot_message_duration,
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list(delayed_delete.values())))
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def _init_subs(self):
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categories, text_channel = self.list_channels()
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self.guild_text_channels = text_channel
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self.guild_categories = categories
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channel_dict: dict[str, TextChannel] = {c.name or '': c for c in self.guild_text_channels}
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unmanaged_categories: set[str] = set(self.config.unmanaged_categories.split(','))
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category_ranges: list[tuple[int, int, ChannelCategory]] = []
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for category in self.guild_categories:
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if category.name in unmanaged_categories:
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self.logger.debug('Skipping unmanaged category: %s', category.name)
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continue
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range_info = (category.name or '').split('-')
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if len(range_info) != 2: # noqa: PLR2004
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self.logger.warning('Cannot compute range for category: %s', category.name)
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continue
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category_ranges.append((ord(range_info[0].lower()), ord(range_info[1].lower()), category))
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category_ranges = sorted(category_ranges, key=operator.itemgetter(0))
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name_regex = r'([^a-z])'
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for sub_info in self._yt_subscriptions.values():
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discord_name = sub_info.name.lower()
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discord_name = re.sub(name_regex, '-', discord_name)
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category_value = ord(discord_name[0])
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sub_channel: TextChannel | None = channel_dict.get(discord_name)
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if sub_channel is None:
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selected_category: ChannelCategory | None = None
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for start_range, stop_range, category in category_ranges:
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if start_range <= category_value <= stop_range:
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selected_category = category
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break
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if selected_category is None:
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selected_category = category_ranges[-1][2]
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sub_channel = self.create_text_channel({
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'name': discord_name,
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'parent_id': selected_category.id,
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'permission_overwrites': [
|
||||
Overwrite(self.everyone_role.id, OverwriteType.ROLE, allow=Permissions.NONE,
|
||||
deny=Permissions.SEND_MESSAGES),
|
||||
Overwrite(self.bot_role.id, OverwriteType.ROLE,
|
||||
allow=Permissions.VIEW_CHANNEL | Permissions.SEND_MESSAGES,
|
||||
deny=Permissions.NONE)]
|
||||
})
|
||||
if sub_info.channel_info is None:
|
||||
_, channel_info = self.yt_manager.request_channel_info(
|
||||
sub_info.channel_id, request_timeout=self.config.request_timeout)
|
||||
if not channel_info.items:
|
||||
self.logger.error('No channel info return from YouTube API for channel: %s', discord_name)
|
||||
continue
|
||||
sub_info.channel_info = channel_info.items[0].snippet
|
||||
channel_url = f'https://www.youtube.com/{sub_info.channel_info.customUrl}'
|
||||
_ = self.create_message(sub_channel, {'content': channel_url})
|
||||
sub_info.last_update = time.time()
|
||||
|
||||
def run(self):
|
||||
while True:
|
||||
if self.tasks:
|
||||
self.tasks = sorted(self.tasks, key=operator.itemgetter(1), reverse=True)
|
||||
task_type, task_time, task_params = self.tasks.pop()
|
||||
sleep_time = task_time - time.time()
|
||||
self.logger.debug(
|
||||
'Next task %s at %.03f (sleeping for %.03fs) : %s', task_type, task_time, sleep_time, task_params)
|
||||
if sleep_time > 0:
|
||||
time.sleep(sleep_time)
|
||||
match task_type:
|
||||
case DiscordManager.Task.DELETE_MESSAGES:
|
||||
if not isinstance(task_params, list):
|
||||
self.logger.error('Wrong task params for DELETE_MESSAGES: %s', task_params)
|
||||
elif not task_params:
|
||||
self.logger.error('Empty params for DELETE_MESSAGES: %s', task_params)
|
||||
elif any(not isinstance(v, Message) for v in task_params):
|
||||
self.logger.error('All params not int for DELETE_MESSAGES: %s', task_params)
|
||||
else:
|
||||
for message in task_params:
|
||||
try:
|
||||
self.delete_message(message)
|
||||
except Exception as error:
|
||||
self.logger.error('Error deleting message %s: %s -> %s',
|
||||
message, error, traceback.format_exc().replace('\n', ' | '))
|
||||
case DiscordManager.Task.SCAN_BOT_CHANNEL:
|
||||
try:
|
||||
self._scan_bot_channel()
|
||||
except Exception as error:
|
||||
self.logger.error('Error scanning bot channel: %s -> %s',
|
||||
error, traceback.format_exc().replace('\n', ' | '))
|
||||
self.tasks.append((
|
||||
self.Task.SCAN_BOT_CHANNEL, time.time() + self.config.bot_channel_scan_interval, None))
|
||||
case DiscordManager.Task.INIT_SUBS:
|
||||
try:
|
||||
self._init_subs()
|
||||
except Exception as error:
|
||||
self.logger.error('Error initializing subscriptions : %s -> %s',
|
||||
error, traceback.format_exc().replace('\n', ' | '))
|
||||
time.sleep(1)
|
||||
|
||||
def create_text_channel(self, params: Api.Guild.CreateTextChannelParams) -> TextChannel:
|
||||
_, channel_info = self._send_request(
|
||||
*Api.Guild.create_channel(guild_id=self.guild_id), data=json.dumps(params, cls=ApiEncoder).encode(),
|
||||
expected_code=201)
|
||||
if not isinstance(channel_info, dict):
|
||||
raise RuntimeError(f'Error creating channel with params (no info): {params}')
|
||||
return TextChannel.from_dict(channel_info)
|
||||
|
||||
def create_message(self, channel: TextChannel, params: Api.Message.CreateParams,
|
||||
upload_files: list[tuple[str, FileMime, bytes]] | None = None) -> Message:
|
||||
_, message_info = self._send_request(
|
||||
*Api.Message.create(channel_id=channel.id), data=json.dumps(params, cls=ApiEncoder).encode(),
|
||||
upload_files=upload_files)
|
||||
if not isinstance(message_info, dict):
|
||||
raise RuntimeError(f'Error creating message with params (no info): {params}')
|
||||
return Message.from_dict(message_info)
|
||||
|
||||
def delete_message(self, message: Message):
|
||||
_, _ = self._send_request(
|
||||
*Api.Message.delete(channel_id=message.channel_id, message_id=message.id), expected_code=204)
|
||||
|
||||
def get_current_user(self) -> User:
|
||||
_, user_info = self._send_request(*Api.User.get_current())
|
||||
if not isinstance(user_info, dict):
|
||||
raise RuntimeError(f'Error getting current user (not a dict): {user_info}')
|
||||
return User.from_dict(user_info)
|
||||
|
||||
def list_channels(self) -> tuple[list[ChannelCategory], list[TextChannel]]:
|
||||
_, channels_info = self._send_request(*Api.Guild.list_guilds(self.guild_id))
|
||||
categories: list[ChannelCategory] = []
|
||||
text_channels: list[TextChannel] = []
|
||||
if channels_info is not None:
|
||||
for channel_info in channels_info:
|
||||
channel_type = ChannelType(channel_info['type'])
|
||||
match channel_type:
|
||||
case ChannelType.GUILD_CATEGORY:
|
||||
categories.append(ChannelCategory.from_dict(channel_info))
|
||||
case ChannelType.GUILD_TEXT:
|
||||
text_channels.append(TextChannel.from_dict(channel_info))
|
||||
return categories, text_channels
|
||||
|
||||
def list_roles(self) -> list[Role]:
|
||||
_, roles_info = self._send_request(*Api.Guild.list_roles(self.guild_id))
|
||||
if not isinstance(roles_info, list):
|
||||
raise RuntimeError(f'Error listing roles (not a list): {roles_info}')
|
||||
return [Role.from_dict(r) for r in roles_info]
|
||||
|
||||
def list_text_channel_messages(self, channel: TextChannel, limit: int | None = None, before_id: int | None = None,
|
||||
after_id: int | None = None) -> list[Message]:
|
||||
if limit is not None and not (0 < limit <= 100): # noqa: PLR2004
|
||||
raise RuntimeError('Cannot list messages by channel with limit outside [0, 100] range')
|
||||
params: Api.Message.ListMessageParams = {}
|
||||
if limit is not None:
|
||||
params['limit'] = limit
|
||||
if before_id is not None:
|
||||
params['before'] = before_id
|
||||
if after_id is not None:
|
||||
params['after'] = after_id
|
||||
_, messages_info = self._send_request(
|
||||
*Api.Message.list_by_channel(channel.id),
|
||||
data=json.dumps(params, cls=ApiEncoder).encode() if params else None)
|
||||
return [Message.from_dict(m) for m in messages_info or []]
|
||||
Loading…
Add table
Add a link
Reference in a new issue