node_example_handling_async

node_example_async_await.js

export async function getCardPage(req, res, next) {
  try {
    const query = parseCardQuery(req.query);
    const cardId = req.params.id;

    const [card, campaign] = await Promise.all([
      CardApi.getCard(cardId),
      getCardCampaign(cardId, query.campaignId)
    ]);

    const record = CardUtils.mergeCardWithProgram(card, card.program);
    let state = getCardState(record, campaign, true, 'standalone', query);

    let redirectViewParams = null;
    if (campaign) {
      redirectViewParams = await getCardRedirectParams(card, campaign, req);
      cookieVisitedCampaign(req.cookies, res, campaign.id);
      state = {
        ...state,
        isRedirectMode: true,
        redirectView: redirectViewParams
      };

      renderVuCardPage(res, 'vucard', record, null, state);
    }
    else {
      const recordHtml = ReactDOMServer.renderToString(<VuCard {...state}/>);
      renderVuCardPage(res, 'vucard', record, recordHtml, state);
    }
  }
  catch (e) {
    console.trace(e);
    next(e);
  }
}

async function getCardRedirectParams(card, campaign, req) {
  try {
    if (CampaignUtils.isRedirectEnabled(campaign)) {
      let redirectCookie = getRedirectCookie(req.cookies);
      const isFirstTimeVisit = !RedirectCookieUtils.hasVisitedCampaign(redirectCookie, campaign.id);
      if (isFirstTimeVisit) {
        switch (campaign.firstTimeRedirectAction) {
          default:
          case RedirectConst.firstTimeRedirectActions.default: {
            const deviceTypeRedirectParams = getDeviceTypeRedirectParams(card, campaign, req);
            if (deviceTypeRedirectParams) {
              return deviceTypeRedirectParams;
            }
            else {
              return await getDefaultCardRedirectParams(card, campaign, req);
            }
          }
          case RedirectConst.firstTimeRedirectActions.networkRedirect: {
            const network = getRedirectNetwork(card);
            if (network) {
              return {
                redirectType: RedirectConst.redirectTypes.firstTime,
                cardId: card.id,
                campaignId: campaign.id,
                network: null,
                destination: network
              }
            }
            break;
          }
          case RedirectConst.firstTimeRedirectActions.noRedirect:
            return null;
        }
      }
      else {
        return await getDefaultCardRedirectParams(card, campaign, req);
      }
    }
  }
  catch (e) {
    const message = 'Proceed with showing the default card';
    console.trace(e);
    console.log(message);

    if (isSentryActive()) {
      raven.captureException(e, {
        req,
        extra: {
          message
        }
      })
    }
  }
  return null;
}