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import datetime
from .. import TLObject, types
from ..functions.messages import SaveDraftRequest
from ..types import DraftMessage
from ...errors import RPCError
from ...extensions import markdown
from ...utils import get_input_peer, get_peer, get_peer_id
class Draft:
"""
Custom class that encapsulates a draft on the Telegram servers, providing
an abstraction to change the message conveniently. The library will return
instances of this class when calling :meth:`get_drafts()`.
Args:
date (`datetime`):
The date of the draft.
link_preview (`bool`):
Whether the link preview is enabled or not.
reply_to_msg_id (`int`):
The message ID that the draft will reply to.
"""
def __init__(self, client, entity, draft):
self._client = client
self._peer = get_peer(entity)
self._entity = entity
self._input_entity = get_input_peer(entity) if entity else None
if not draft or not isinstance(draft, DraftMessage):
draft = DraftMessage('', None, None, None, None)
self._text = markdown.unparse(draft.message, draft.entities)
self._raw_text = draft.message
self.date = draft.date
self.link_preview = not draft.no_webpage
self.reply_to_msg_id = draft.reply_to.reply_to_msg_id if isinstance(draft.reply_to, types.InputReplyToMessage) else None
@property
def entity(self):
"""
The entity that belongs to this dialog (user, chat or channel).
"""
return self._entity
@property
def input_entity(self):
"""
Input version of the entity.
"""
if not self._input_entity:
try:
self._input_entity = self._client._mb_entity_cache.get(
get_peer_id(self._peer, add_mark=False))._as_input_peer()
except AttributeError:
pass
return self._input_entity
async def get_entity(self):
"""
Returns `entity` but will make an API call if necessary.
"""
if not self.entity and await self.get_input_entity():
try:
self._entity =\
await self._client.get_entity(self._input_entity)
except ValueError:
pass
return self._entity
async def get_input_entity(self):
"""
Returns `input_entity` but will make an API call if necessary.
"""
# We don't actually have an API call we can make yet
# to get more info, but keep this method for consistency.
return self.input_entity
@property
def text(self):
"""
The markdown text contained in the draft. It will be
empty if there is no text (and hence no draft is set).
"""
return self._text
@property
def raw_text(self):
"""
The raw (text without formatting) contained in the draft.
It will be empty if there is no text (thus draft not set).
"""
return self._raw_text
@property
def is_empty(self):
"""
Convenience bool to determine if the draft is empty or not.
"""
return not self._text
async def set_message(
self, text=None, reply_to=0, parse_mode=(),
link_preview=None):
"""
Changes the draft message on the Telegram servers. The changes are
reflected in this object.
:param str text: New text of the draft.
Preserved if left as None.
:param int reply_to: Message ID to reply to.
Preserved if left as 0, erased if set to None.
:param bool link_preview: Whether to attach a web page preview.
Preserved if left as None.
:param str parse_mode: The parse mode to be used for the text.
:return bool: `True` on success.
"""
if text is None:
text = self._text
if reply_to == 0:
reply_to = self.reply_to_msg_id
if link_preview is None:
link_preview = self.link_preview
raw_text, entities =\
await self._client._parse_message_text(text, parse_mode)
result = await self._client(SaveDraftRequest(
peer=self._peer,
message=raw_text,
no_webpage=not link_preview,
reply_to=None if reply_to is None else types.InputReplyToMessage(reply_to),
entities=entities
))
if result:
self._text = text
self._raw_text = raw_text
self.link_preview = link_preview
self.reply_to_msg_id = reply_to
self.date = datetime.datetime.now(tz=datetime.timezone.utc)
return result
async def send(self, clear=True, parse_mode=()):
"""
Sends the contents of this draft to the dialog. This is just a
wrapper around ``send_message(dialog.input_entity, *args, **kwargs)``.
"""
await self._client.send_message(
self._peer, self.text, reply_to=self.reply_to_msg_id,
link_preview=self.link_preview, parse_mode=parse_mode,
clear_draft=clear
)
async def delete(self):
"""
Deletes this draft, and returns `True` on success.
"""
return await self.set_message(text='')
def to_dict(self):
try:
entity = self.entity
except RPCError as e:
entity = e
return {
'_': 'Draft',
'text': self.text,
'entity': entity,
'date': self.date,
'link_preview': self.link_preview,
'reply_to_msg_id': self.reply_to_msg_id
}
def __str__(self):
return TLObject.pretty_format(self.to_dict())
def stringify(self):
return TLObject.pretty_format(self.to_dict(), indent=0)
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