imaginaryfriend/src/domain/message.py

import random
from .abstract_entity import AbstractEntity
from src.utils import deep_get_attr
from src.config import config


class Message(AbstractEntity):
    def __init__(self, chat, message):
        super(Message, self).__init__(chat=chat, message=message)

        if self.has_text():
            self.text = message.text
            self.words = self.__get_words()
        else:
            self.text = ''

    def has_text(self):
        """Returns True if the message has text.
        """
        return self.message.text.strip() != ''

    def is_sticker(self):
        """Returns True if the message is a sticker.
        """
        return self.message.sticker is not None

    def is_editing(self):
        """Returns True if the message was edited.
        """
        return self.message.edit_date is not None

    def has_entities(self):
        """Returns True if the message has entities (attachments).
        """
        return self.message.entities is not None

    def has_anchors(self):
        """Returns True if the message contains at least one anchor from anchors config.
        """
        anchors = config['bot']['anchors'].split(',')
        return self.has_text() and any(a in self.message.text.split(' ') for a in anchors)

    def is_private(self):
        """Returns True if the message is private.
        """
        return self.message.chat.type == 'private'

    def is_reply_to_bot(self):
        """Returns True if the message is a reply to bot.
        """
        user_name = deep_get_attr(self.message, 'reply_to_message.from_user.username')

        return user_name == config['bot']['name']

    def is_random_answer(self):
        """Returns True if reply chance for this chat is high enough
        """
        return random.randint(0, 100) < getattr(self.chat, 'random_chance', config['bot']['default_chance'])

    def __get_words(self):
        symbols = list(self.text)

        def prettify(word):
            lowercase_word = word.lower().strip()
            last_symbol = lowercase_word[-1:]
            if last_symbol not in config['grammar']['end_sentence']:
                last_symbol = ''
            pretty_word = lowercase_word.strip(config['grammar']['all']) + last_symbol

            return pretty_word if pretty_word != '' and len(pretty_word) > 2 else lowercase_word

        for entity in self.message.entities:
            symbols[entity.offset:entity.length] = ' ' * entity.length

        return list(filter(None, map(prettify, ''.join(symbols).split(' '))))