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# Copyright 2024 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 chat_avatar_app]

from typing import Any, Mapping

import flask

import functions_framework

# [START chat_avatar_app_slash_command]

# The ID of the slash command "/about".

# You must use the same ID in the Google Chat API configuration.

ABOUT_COMMAND_ID = 1

@functions_framework.http

def avatar_app(req: flask.Request) -> Mapping[str, Any]:

"""Handle requests from Google Workspace add on

Args:

flask.Request req: the request sent by Google Chat

Returns:

Mapping[str, Any]: the response to be sent back to Google Chat

"""

chat_event = req.get_json(silent=True)["chat"]

if chat_event and "appCommandPayload" in chat_event:

message = handle_app_command(chat_event)

else:

message = handle_message(chat_event)

return { "hostAppDataAction": { "chatDataAction": { "createMessageAction": {

"message": message

}}}}

def handle_app_command(event: Mapping[str, Any]) -> Mapping[str, Any]:

"""Responds to an APP_COMMAND event in Google Chat.

Args:

Mapping[str, Any] event: the event object from Google Chat

Returns:

Mapping[str, Any]: the response message object.

"""

if event["appCommandPayload"]["appCommandMetadata"]["appCommandId"] == ABOUT_COMMAND_ID:

return {

"text": "The Avatar app replies to Google Chat messages.",

}

return {}

# [END chat_avatar_app_slash_command]

def handle_message(event: Mapping[str, Any]) -> Mapping[str, Any]:

"""Responds to a MESSAGE event in Google Chat.

Args:

Mapping[str, Any] event: the event object from Google Chat

Returns:

Mapping[str, Any]: the response message object.

"""

# Stores the Google Chat user as a variable.

chat_user = event["messagePayload"]["message"]["sender"]

display_name = chat_user.get("displayName", "")

avatar_url = chat_user.get("avatarUrl", "")

return {

"text": "Here's your avatar",

"cardsV2": [{

"cardId": "avatarCard",

"card": {

"name": "Avatar Card",

"header": {

"title": f"Hello {display_name}!"

},

"sections": [{ "widgets": [

{ "textParagraph": { "text": "Your avatar picture:" }},

{ "image": { "imageUrl": avatar_url }},

]}]

}

}]

}

# [END chat_avatar_app]