向卡片添加互动式界面元素

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: [getSuggestedContact("3")]
}

'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")]
}

.setSelectionInput(new GoogleAppsCardV1SelectionInput()
  .setName("contacts")
  .setType("MULTI_SELECT")
  .setLabel("Selected contacts")
  .setMultiSelectMaxSelectedItems(3)
  .setMultiSelectMinQueryLength(1)
  .setExternalDataSource(new GoogleAppsCardV1Action().setFunction(FUNCTION_URL))
  // Suggested items loaded by default.
  // The list is static here but it could be dynamic.
  .setItems(List.of(getSuggestedContact("3")))))))))));

selectionInput: {
  name: "contacts",
  type: "MULTI_SELECT",
  label: "Selected contacts",
  multiSelectMaxSelectedItems: 3,
  multiSelectMinQueryLength: 1,
  externalDataSource: { function: "queryContacts" },
  // Suggested items loaded by default.
  // The list is static here but it could be dynamic.
  items: [getSuggestedContact("3")]
}

/**
 * Web app that responds to events sent from a Google Chat space.
 *
 * @param {Object} req Request sent from Google Chat space
 * @param {Object} res Response to send back
 */
app.post('/', async (req, res) => {
  // Stores the Google Chat event
  const chatEvent = req.body.chat;

  // Handle user interaction with multiselect.
  if(chatEvent.widgetUpdatedPayload) {
    return res.json(queryContacts(req.body));
  }

  // Replies with a card that contains the multiselect menu.
  return res.json({ hostAppDataAction: { chatDataAction: { createMessageAction: { message: {
    cardsV2: [{
      cardId: "contactSelector",
      card: { sections:[{ widgets: [{
        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: [getSuggestedContact("3")]
        }
      }]}]}
    }]
  }}}}});
});

/**
 * Get contact suggestions based on text typed by users.
 *
 * @param {Object} event the event object that contains the user's query
 * @return {Object} suggestions
 */
function queryContacts(event) {
  const query = event.commonEventObject.parameters["autocomplete_widget_query"];
  return { action: { modifyOperations: [{ updateWidget: { selectionInputWidgetSuggestions: { suggestions: [
    // The list is static here but it could be dynamic.
    getSuggestedContact("1"), getSuggestedContact("2"), getSuggestedContact("3"), getSuggestedContact("4"), getSuggestedContact("5")
  // Only return items based on the query from the user.
  ].filter(e => !query || e.text.includes(query)) }}}]}};
}

/**
 * Generate a suggested contact given an ID.
 *
 * @param {String} id The ID of the contact to return.
 * @return {Object} The contact formatted as a selection item in the menu.
 */
function getSuggestedContact(id) {
  return {
    value: id,
    startIconUri: "https://www.gstatic.com/images/branding/product/2x/contacts_48dp.png",
    text: "Contact " + id
  };
}

@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': [{
        '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")]
        }
      }]}]}
    }]}
  }}}})


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
  }

@SpringBootApplication
@RestController
// Web app that responds to events sent from a Google Chat space.
public class App {
  private static final String FUNCTION_URL = "your-function-url";

  public static void main(String[] args) {
    SpringApplication.run(App.class, args);
  }

  /**
   * Handle requests from Google Chat
   * 
   * @param event the event object sent by Google Chat
   * @return The response to be sent back to Google Chat
   */
  @PostMapping("/")
  @ResponseBody
  public GenericJson onEvent(@RequestBody JsonNode event) throws Exception {
    // Stores the Google Chat event
    JsonNode chatEvent = event.at("/chat");

    // Handle user interaction with multiselect.
    if (!chatEvent.at("/widgetUpdatedPayload").isEmpty()) {
      return queryContacts(event);
    }

    // Replies with a card that contains the multiselect menu.
    Message message = new Message().setCardsV2(List.of(new CardWithId()
      .setCardId("contactSelector")
      .setCard(new GoogleAppsCardV1Card()
        .setSections(List.of(new GoogleAppsCardV1Section().setWidgets(List.of(new GoogleAppsCardV1Widget()
          .setSelectionInput(new GoogleAppsCardV1SelectionInput()
            .setName("contacts")
            .setType("MULTI_SELECT")
            .setLabel("Selected contacts")
            .setMultiSelectMaxSelectedItems(3)
            .setMultiSelectMinQueryLength(1)
            .setExternalDataSource(new GoogleAppsCardV1Action().setFunction(FUNCTION_URL))
            // Suggested items loaded by default.
            // The list is static here but it could be dynamic.
            .setItems(List.of(getSuggestedContact("3")))))))))));

    return new GenericJson() {{
      put("hostAppDataAction", new GenericJson() {{
        put("chatDataAction", new GenericJson() {{
          put("createMessageAction", new GenericJson() {{
            put("message", message);
          }});
        }});
      }});
    }};
  }

  /**
   * Get contact suggestions based on text typed by users.
   *
   * @param event the event object that contains the user's query.
   * @return The response with contact suggestions.
   */
  GenericJson queryContacts(JsonNode event) throws Exception {
    String query = event.at("/commonEventObject/parameters/autocomplete_widget_query").asText();
    List<GoogleAppsCardV1SelectionItem> suggestions = List.of(
      // The list is static here but it could be dynamic.
      getSuggestedContact("1"), getSuggestedContact("2"), getSuggestedContact("3"), getSuggestedContact("4"), getSuggestedContact("5")
    // Only return items based on the query from the user
    ).stream().filter(e -> query == null || e.getText().indexOf(query) > -1).toList();

    return new GenericJson() {{
      put("action", new GenericJson() {{
        put("modifyOperations", List.of(new GenericJson() {{
          put("updateWidget", new GenericJson() {{
            put("selectionInputWidgetSuggestions", new GenericJson() {{
              put("suggestions", suggestions);
            }});
          }});
        }}));
      }});
    }};
  }

  /**
   * Generate a suggested contact given an ID.
   * 
   * @param id The ID of the contact to return.
   * @return The contact formatted as a selection item in the menu.
   */
  GoogleAppsCardV1SelectionItem getSuggestedContact(String id) {
    return new GoogleAppsCardV1SelectionItem()
      .setValue(id)
      .setStartIconUri("https://www.gstatic.com/images/branding/product/2x/contacts_48dp.png")
      .setText("Contact " + id);
  }
}

/**
* Responds to a Message trigger in Google Chat.
*
* @param {Object} event the event object from Google Chat
* @return {Object} Response from the Chat app.
*/
function onMessage(event) {
  // Replies with a card that contains the multiselect menu.
  return { hostAppDataAction: { chatDataAction: { createMessageAction: { message: {
    cardsV2: [{
      cardId: "contactSelector",
      card: { sections:[{ widgets: [{
        selectionInput: {
          name: "contacts",
          type: "MULTI_SELECT",
          label: "Selected contacts",
          multiSelectMaxSelectedItems: 3,
          multiSelectMinQueryLength: 1,
          externalDataSource: { function: "queryContacts" },
          // Suggested items loaded by default.
          // The list is static here but it could be dynamic.
          items: [getSuggestedContact("3")]
        }
      }]}]}
    }]
  }}}}};
}

/**
* Get contact suggestions based on text typed by users.
*
* @param {Object} event the event object that contains the user's query
* @return {Object} suggestions
*/
function queryContacts(event) {
  const query = event.commonEventObject.parameters["autocomplete_widget_query"];
  return { action: { modifyOperations: [{ updateWidget: { selectionInputWidgetSuggestions: { suggestions: [
    // The list is static here but it could be dynamic.
    getSuggestedContact("1"), getSuggestedContact("2"), getSuggestedContact("3"), getSuggestedContact("4"), getSuggestedContact("5")
  // Only return items based on the query from the user.
  ].filter(e => !query || e.text.includes(query)) }}}]}};
}

/**
* Generate a suggested contact given an ID.
*
* @param {String} id The ID of the contact to return.
* @return {Object} The contact formatted as a selection item in the menu.
*/
function getSuggestedContact(id) {
  return {
    value: id,
    startIconUri: "https://www.gstatic.com/images/branding/product/2x/contacts_48dp.png",
    text: "Contact " + id
  };
}