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main.py
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# Copyright 2025 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 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.
"""
Google Chat app with a selection input
"""
from typing import Any, Mapping
from flask import Flask, request, json
app = Flask(__name__)
FUNCTION_URL = "your-function-url"
# [START selection_input]
@app.route('/', methods=['POST'])
def post() -> Mapping[str, Any]:
"""Handle requests from Google Chat
Returns:
Mapping[str, Any]: The response
"""
# Stores the Google Chat event
chatEvent = request.get_json().get('chat')
# Handle user interaction with multiselect.
if chatEvent.get('widgetUpdatedPayload') is not None:
return json.jsonify(query_contacts(request.get_json()))
# Replies with a card that contains the multiselect menu.
return json.jsonify({ 'hostAppDataAction': { 'chatDataAction': { 'createMessageAction': {
'message': { 'cardsV2': [{
'cardId': "contactSelector",
'card': { 'sections':[{ 'widgets': [{
# [START selection_input_init]
'selectionInput': {
'name': "contacts",
'type': "MULTI_SELECT",
'label': "Selected contacts",
'multiSelectMaxSelectedItems': 3,
'multiSelectMinQueryLength': 1,
'externalDataSource': { 'function': FUNCTION_URL },
# Suggested items loaded by default.
# The list is static here but it could be dynamic.
'items': [get_suggested_contact("3")]
}
# [END selection_input_init]
}]}]}
}]}
}}}})
def query_contacts(event: dict) -> dict:
"""Get contact suggestions based on text typed by users.
Args:
event (Mapping[str, Any]): The event object that contains the user's query
Returns:
Mapping[str, Any]: The response with contact suggestions.
"""
query = event.get("commonEventObject").get("parameters").get("autocomplete_widget_query")
return { 'action': { 'modifyOperations': [{ 'updateWidget': { 'selectionInputWidgetSuggestions': { 'suggestions': list(
filter(lambda e: query is None or query in e["text"], [
# The list is static here but it could be dynamic.
get_suggested_contact("1"), get_suggested_contact("2"), get_suggested_contact("3"), get_suggested_contact("4"), get_suggested_contact("5")
# Only return items based on the query from the user
])
)}}}]}}
def get_suggested_contact(id: str) -> dict:
"""Generate a suggested contact given an ID.
Args:
id (str): The ID of the contact to return.
Returns:
Mapping[str, Any]: The contact formatted as a selection item in the menu.
"""
return {
'value': id,
'startIconUri': "https://www.gstatic.com/images/branding/product/2x/contacts_48dp.png",
'text': "Contact " + id
}
# [END selection_input]
if __name__ == '__main__':
# This is used when running locally. Gunicorn is used to run the
# application on Google App Engine. See entrypoint in app.yaml.
app.run(host='127.0.0.1', port=8080, debug=True)