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preview-link.gs
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preview-link.gs
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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
*
* https://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 hangouts_chat_preview_link]
/**
* Responds to messages that have links whose URLs match URL patterns
* configured for link previews.
*
* @param {Object} event The event object from Chat API.
* @return {Object} Response from the Chat app attached to the message with
* the previewed link.
*/
function onMessage(event) {
// Checks for the presence of event.message.matchedUrl and attaches a card
// if present
if (event.message.matchedUrl) {
return {
'actionResponse': {
'type': 'UPDATE_USER_MESSAGE_CARDS',
},
'cardsV2': [{
'cardId': 'previewLink',
'card': {
'header': {
'title': 'Example Customer Service Case',
'subtitle': 'Case basics',
},
'sections': [{
'widgets': [
{'keyValue': {'topLabel': 'Case ID', 'content': 'case123'}},
{'keyValue': {'topLabel': 'Assignee', 'content': 'Charlie'}},
{'keyValue': {'topLabel': 'Status', 'content': 'Open'}},
{
'keyValue': {
'topLabel': 'Subject', 'content': 'It won\'t turn on...',
}
},
],
},
{
'widgets': [{
'buttons': [
{
'textButton': {
'text': 'OPEN CASE',
'onClick': {
'openLink': {
'url': 'https://support.example.com/orders/case123',
},
},
},
},
{
'textButton': {
'text': 'RESOLVE CASE',
'onClick': {
'openLink': {
'url': 'https://support.example.com/orders/case123?resolved=y',
},
},
},
},
{
'textButton': {
'text': 'ASSIGN TO ME',
'onClick': {'action': {'actionMethodName': 'assign'}}
},
},
],
}],
}],
},
}],
};
}
// If the Chat app doesn’t detect a link preview URL pattern, it says so.
return {'text': 'No matchedUrl detected.'};
}
/**
* Updates a card that was attached to a message with a previewed link.
*
* @param {Object} event The event object from Chat API.
* @return {Object} Response from the Chat app. Either a new card attached to
* the message with the previewed link, or an update to an existing card.
*/
function onCardClick(event) {
// Checks whether the message event originated from a human or a Chat app
// and sets actionResponse to "UPDATE_USER_MESSAGE_CARDS if human or
// "UPDATE_MESSAGE" if Chat app.
const actionResponseType = event.message.sender.type === 'HUMAN' ?
'UPDATE_USER_MESSAGE_CARDS' :
'UPDATE_MESSAGE';
// To respond to the correct button, checks the button's actionMethodName.
if (event.action.actionMethodName === 'assign') {
return assignCase(actionResponseType);
}
}
/**
* Updates a card to say that "You" are the assignee after clicking the Assign
* to Me button.
*
* @param {String} actionResponseType Which actionResponse the Chat app should
* use to update the attached card based on who created the message.
* @return {Object} Response from the Chat app. Updates the card attached to
* the message with the previewed link.
*/
function assignCase(actionResponseType) {
return {
'actionResponse': {
// Dynamically returns the correct actionResponse type.
'type': actionResponseType,
},
'cardsV2': [{
'cardId': 'assignCase',
'card': {
'header': {
'title': 'Example Customer Service Case',
'subtitle': 'Case basics',
},
'sections': [{
'widgets': [
{'keyValue': {'topLabel': 'Case ID', 'content': 'case123'}},
{'keyValue': {'topLabel': 'Assignee', 'content': 'You'}},
{'keyValue': {'topLabel': 'Status', 'content': 'Open'}},
{
'keyValue': {
'topLabel': 'Subject', 'content': 'It won\'t turn on...',
}
},
],
},
{
'widgets': [{
'buttons': [
{
'textButton': {
'text': 'OPEN CASE',
'onClick': {
'openLink': {
'url': 'https://support.example.com/orders/case123',
},
},
},
},
{
'textButton': {
'text': 'RESOLVE CASE',
'onClick': {
'openLink': {
'url': 'https://support.example.com/orders/case123?resolved=y',
},
},
},
},
{
'textButton': {
'text': 'ASSIGN TO ME',
'onClick': {'action': {'actionMethodName': 'assign'}},
},
},
],
}],
}],
},
}],
};
}
// [END hangouts_chat_preview_link]