73 lines
1.7 KiB
Python
73 lines
1.7 KiB
Python
import os
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from dataclasses import dataclass, field
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from typing import Any, Iterable, Optional
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from uuid import UUID, uuid4
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class Resource:
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"""
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Class to handle resources (files) to be sent through the Telegram API.
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"""
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def __init__(
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self,
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file_id: Optional[int] = None,
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url: Optional[str] = None,
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path: Optional[str] = None,
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):
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assert file_id or url or path, 'You need to specify either file_id, url or path'
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self.file_id = file_id
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self.url = url
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self.path = path
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self.fd = None
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def __enter__(self):
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"""
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Context manager to open the file and return the file descriptor.
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"""
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if self.path:
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self.fd = open(os.path.abspath(os.path.expanduser(self.path)), 'rb') # noqa
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return self.fd
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return self.file_id or self.url
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def __exit__(self, *_, **__):
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"""
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If the file was opened, close it.
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"""
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if self.fd:
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self.fd.close()
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self.fd = None
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@dataclass
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class Command:
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"""
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Dataclass to represent a command to be executed on the Telegram service.
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"""
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cmd: str
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args: Iterable = field(default_factory=list)
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kwargs: dict = field(default_factory=dict)
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timeout: Optional[float] = None
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id: UUID = field(default_factory=uuid4)
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def is_end_of_service(self) -> bool:
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"""
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Check if a command is the end-of-service command.
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"""
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return is_end_of_service(self)
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def is_end_of_service(cmd: Any) -> bool:
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"""
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Check if a command is the end-of-service command.
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"""
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return isinstance(cmd, Command) and cmd.cmd == END_OF_SERVICE.cmd
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END_OF_SERVICE = Command('stop')
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# vim:sw=4:ts=4:et:
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