zulip/contrib_bots/bots/define/define.py

67 lines
2.4 KiB
Python

# See readme.md for instructions on running this code.
import logging
import json
import requests
import html2text
class DefineHandler(object):
'''
This plugin define a word that the user inputs. It
looks for messages starting with '@mention-bot'.
'''
DEFINITION_API_URL = 'https://owlbot.info/api/v1/dictionary/{}?format=json'
REQUEST_ERROR_MESSAGE = 'Definition not available.'
EMPTY_WORD_REQUEST_ERROR_MESSAGE = 'Please enter a word to define.'
PHRASE_ERROR_MESSAGE = 'Definitions for phrases are not available.'
def usage(self):
return '''
This plugin will allow users to define a word. Users should preface
messages with @mention-bot.
'''
def handle_message(self, message, client, state_handler):
original_content = message['content'].strip()
bot_response = self.get_bot_define_response(original_content)
client.send_reply(message, bot_response)
def get_bot_define_response(self, original_content):
split_content = original_content.split(' ')
# If there are more than one word (a phrase)
if len(split_content) > 1:
return DefineHandler.PHRASE_ERROR_MESSAGE
to_define = split_content[0].strip()
to_define_lower = to_define.lower()
# No word was entered.
if not to_define_lower:
return self.EMPTY_WORD_REQUEST_ERROR_MESSAGE
else:
response = '**{}**:\n'.format(to_define)
try:
# Use OwlBot API to fetch definition.
api_result = requests.get(self.DEFINITION_API_URL.format(to_define_lower))
# Convert API result from string to JSON format.
definitions = api_result.json()
# Could not fetch definitions for the given word.
if not definitions:
response += self.REQUEST_ERROR_MESSAGE
else: # Definitions available.
# Show definitions line by line.
for d in definitions:
example = d['example'] if d['example'] else '*No example available.*'
response += '\n' + '* (**{}**) {}\n  {}'.format(d['type'], d['defenition'], html2text.html2text(example))
except Exception as e:
response += self.REQUEST_ERROR_MESSAGE
logging.exception(e)
return response
handler_class = DefineHandler