[GAS] Cloud Build Executer

gas-cloud-build-executer.js

function init(e) {
  const props = PropertiesService.getScriptProperties().getProperties();
  
  if (props.SLACK_VERIFICATION_TOKEN != e.parameter.token) {
    throw new Error('Invalid token');
  }

  const params = parseParams(e.parameter.text);

  return { props, params };
}

function parseParams(paramsText = '') {
  const params = paramsText.split(' ');
  
  return {
    subCommand: params.shift(),
    args: params
  };
}

function result({ text, inChannel = false }) {
  const data = {
    text,
    // See https://api.slack.com/interactivity/slash-commands
    response_type: inChannel ? 'in_channel' : 'ephemeral'
  };

  return ContentService.createTextOutput(JSON.stringify(data)).setMimeType(ContentService.MimeType.JSON);
}

function postWebhook(name, url) {
  const response = UrlFetchApp.fetch(url, {
    method: 'post',
    contentType: 'application/json',
    payload: '{}'
  });

  if (response.getResponseCode() == 200) {
    return result({
      text: `Successfully started ${name} build.`,
      inChannel: true
    });
  } else {
    return result({
      text: `Error! ${name}: ${response.getResponseCode()} ${response.getContentText()}`
    });
  }
}

function doPost(e) {
  const { props, params } = init(e);

  switch (params.subCommand) {
    case 'shopping-list':
      return postWebhook('shopping-list', props.WEBHOOK_APP_DEPLOY_URL)
    
    case 'cloud-build-notifier':
      return postWebhook('cloud-build-notifier', props.WEBHOOK_CLOUD_BUILD_NOTIFIER_DEPLOY_URL)
  
    default:
      return result({
        text: `Usage: ${e.parameter.command} [shopping-list|cloud-build-notifier]`,
        inChannel: true
      });
  }
}