dyaskur / google-chat-poll

import {chat_v1 as chatV1} from 'googleapis/build/src/apis/chat/v1';

/**

 * Add a new option to the state(like DB)

 *

 * @param {string} option - the new option name

 * @param {object} state - the current message state

 * @param {string} creator - who add the new option

 * @returns {void} card

 */

export function addOptionToState(option: string, state: PollState, creator = '') {

  const choiceLength = state.choices.length;

  state.choices.push(option);

  if (state.choiceCreator === undefined) {

    state.choiceCreator = {[choiceLength]: creator};

  } else {

    state.choiceCreator[choiceLength] = creator;

  }

}

export function getStateFromCard(event: chatV1.Schema$DeprecatedEvent) {

  const card = event.message?.cardsV2?.[0]?.card as chatV1.Schema$GoogleAppsCardV1Card;

  return getStateFromCardName(card) || getStateFromParameter(event) || getStateFromCardWhenNoHeader(card) ||

    getStateFromCardWhenHasHeader(card);

}

function getStateFromCardWhenNoHeader(card: chatV1.Schema$GoogleAppsCardV1Card) {

  return card?.sections?.[0].widgets?.[0].decoratedText?.button?.onClick?.action?.parameters?.[0]?.value;

}

function getStateFromCardName(card: chatV1.Schema$GoogleAppsCardV1Card) {

  // when has header the first section is header

  return card?.name;

}

function getStateFromParameter(event: chatV1.Schema$DeprecatedEvent) {

  const parameters = event.common?.parameters;

  return parameters?.['state'];

}