Custom Parser (Aayco)

from telethon.extensions import markdown
from telethon import types
from telethon.tl.types import MessageEntityCustomEmoji, MessageEntitySpoiler, MessageEntityTextUrl, ReactionCustomEmoji, MessageEntityBlockquote, MessageEntityItalic, MessageEntityUnderline, MessageEntityCode, MessageEntityStrike, MessageEntityBold, MessageEntityPre

class AaycoBot:
    @staticmethod
    def parse(text):
       text, entities = markdown.parse(text)
       for i, e in enumerate(entities):
          if ((isinstance(e, MessageEntityTextUrl)) and e.url.startswith('tg://emoji?id=')):
             entities[i] = MessageEntityCustomEmoji(e.offset, e.length, int(e.url.split('=')[1]))
          elif ((isinstance(e, MessageEntityTextUrl)) and e.url == 'spoiler'):
                entities[i] = types.MessageEntitySpoiler(e.offset, e.length)
          elif ((isinstance(e, MessageEntityTextUrl)) and e.url == 'quote'):
                entities[i] = types.MessageEntityBlockquote(e.offset, e.length)
          elif ((isinstance(e, MessageEntityTextUrl)) and e.url == 'italic'):
                entities[i] = types.MessageEntityItalic(e.offset, e.length)
          elif ((isinstance(e, MessageEntityTextUrl)) and e.url == 'underline'):
                entities[i] = types.MessageEntityUnderline(e.offset, e.length)
          elif ((isinstance(e, MessageEntityTextUrl)) and e.url == 'code'):
                entities[i] = types.MessageEntityCode(e.offset, e.length)
          elif ((isinstance(e, MessageEntityTextUrl)) and e.url == 'strike'):
                entities[i] = types.MessageEntityStrike(e.offset, e.length)
          elif ((isinstance(e, MessageEntityTextUrl)) and e.url == 'bold'):
                entities[i] = types.MessageEntityBold(e.offset, e.length)
          elif ((isinstance(e, MessageEntityTextUrl)) and e.url.startswith('pre:')):
             entities[i] = MessageEntityPre(e.offset, e.length, str(e.url.split(':')[1]))
       return text, entities
    @staticmethod
    def unparse(text, entities):
       for i, e in enumerate(entities or []):
          if isinstance(e, MessageEntityCustomEmoji):
             entities[i] = MessageEntityTextUrl(e.offset, e.length, f'tg://emoji?id={e.document_id}')
          elif isinstance(e, types.MessageEntitySpoiler):
             entities[i] = types.MessageEntityTextUrl(e.offset, e.length, 'spoiler')
          elif ((isinstance(e, MessageEntityBlockquote))):
                entities[i] = types.MessageEntityTextUrl(e.offset, e.length, 'quote')
          elif ((isinstance(e, MessageEntityItalic))):
                entities[i] = types.MessageEntityTextUrl(e.offset, e.length, 'italic')
          elif ((isinstance(e, MessageEntityUnderline))):
                entities[i] = types.MessageEntityTextUrl(e.offset, e.length, 'underline')
          elif ((isinstance(e, MessageEntityCode))):
                entities[i] = types.MessageEntityTextUrl(e.offset, e.length, 'code')
          elif ((isinstance(e, MessageEntityStrike))):
                entities[i] = types.MessageEntityTextUrl(e.offset, e.length, 'strike')
          elif ((isinstance(e, MessageEntityBold))):
                entities[i] = types.MessageEntityTextUrl(e.offset, e.length, 'bold')
          elif isinstance(e, MessageEntityPre):
                entities[i] = MessageEntityTextUrl(e.offset, e.length, f'pre:{e.language}')
       return markdown.unparse(text, entities)