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main.py
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main.py
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# Copyright 2022 Google LLC.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# [START functions_slack_setup]
import os
from flask import jsonify
import functions_framework
import googleapiclient.discovery
from slack.signature import SignatureVerifier
kgsearch = googleapiclient.discovery.build(
'kgsearch',
'v1',
developerKey=os.environ['KG_API_KEY'],
cache_discovery=False)
# [END functions_slack_setup]
# [START functions_verify_webhook]
def verify_signature(request):
request.get_data() # Decodes received requests into request.data
verifier = SignatureVerifier(os.environ['SLACK_SECRET'])
if not verifier.is_valid_request(request.data, request.headers):
raise ValueError('Invalid request/credentials.')
# [END functions_verify_webhook]
# [START functions_slack_format]
def format_slack_message(query, response):
entity = None
if response and response.get('itemListElement') is not None and \
len(response['itemListElement']) > 0:
entity = response['itemListElement'][0]['result']
message = {
'response_type': 'in_channel',
'text': 'Query: {}'.format(query),
'attachments': []
}
attachment = {}
if entity:
name = entity.get('name', '')
description = entity.get('description', '')
detailed_desc = entity.get('detailedDescription', {})
url = detailed_desc.get('url')
article = detailed_desc.get('articleBody')
image_url = entity.get('image', {}).get('contentUrl')
attachment['color'] = '#3367d6'
if name and description:
attachment['title'] = '{}: {}'.format(entity["name"],
entity["description"])
elif name:
attachment['title'] = name
if url:
attachment['title_link'] = url
if article:
attachment['text'] = article
if image_url:
attachment['image_url'] = image_url
else:
attachment['text'] = 'No results match your query.'
message['attachments'].append(attachment)
return message
# [END functions_slack_format]
# [START functions_slack_request]
def make_search_request(query):
req = kgsearch.entities().search(query=query, limit=1)
res = req.execute()
return format_slack_message(query, res)
# [END functions_slack_request]
# [START functions_slack_search]
@functions_framework.http
def kg_search(request):
if request.method != 'POST':
return 'Only POST requests are accepted', 405
verify_signature(request)
kg_search_response = make_search_request(request.form['text'])
return jsonify(kg_search_response)
# [END functions_slack_search]