Dynamic not found when building link from app

[elinahovakimyan]

Hello! I am trying to generate dynamic links from the app but when I try to open I either get redirected to web or I get error Dynamic link not found.

When creating the link manually from console I use the web URL in deep link URL field so that it redirects to web version of our website on desktop and to app when opening from mobile. However, I am not able to find a way to do that from app by using buildLink or buildShortLink methods. When I add web URL as link, the generated link is just redirecting to web instead of app, and when I add mobile.website.com which is the URL for dynamic links, it is giving error dynamic link not found.

How can I specify deep link from app code and make the generated links work?

const link = await dynamicLinks().buildShortLink({
      link: `https://website.com/${type}/${id}`,
      domainUriPrefix: 'https://mobile.website.com/app',
});

[mikehardy]

Hi there! The only way I'm aware of to generate a real fully-featured short dynamic link inside the mobile app is to do it with a cloud function that has access to the firebase-admin-sdk. This is how I do it, I'm just copy-splatting my cloud function in here, it requires some library features I am not including and is all customized for my work project as well as possibly being chatty in the logs and or buggy, so be careful, but it works for me when called from thhe app

import * as functions from 'firebase-functions';
import * as rp from 'request-promise-native';
import { EventEmitter } from 'events';

import { processCorrelationIds, sendError, sendSuccess } from './lib';

// eslint-disable-next-line @typescript-eslint/no-var-requires
const cors = require('cors')({ origin: true });

const api_key = functions.config().apikeys.dynamiclinks;

// Set up logging
// https://firebase.google.com/docs/functions/writing-and-viewing-logs

// https://us-central1-kscoreappdev.cloudfunctions.net/getPublicProfile
// http://localhost:5000/kscoreappdev/us-central1/getPublicProfile
export const getProfileLink = functions
  .runWith({
    memory: functions.VALID_MEMORY_OPTIONS[1], // 128MB was attempted and results in out of memory
  })
  .https.onRequest(async (req, res) => {
    return cors(req, res, async () => {
      processCorrelationIds(req, res);

      if (!req.body.data || !req.body.data.longLink) {
        throw new functions.https.HttpsError('internal', 'Missing link');
      }

      const longLink = req.body.data.longLink;
      res.locals.longLink = longLink;
      console.log(
        'getProfileLink for ' + longLink + ' Correlation-ID: ' + res.locals.correlationId
      );
      console.log('Full inbound message: ' + JSON.stringify(req.body.data));

      const options = {
        method: 'POST',
        uri: `https://firebasedynamiclinks.googleapis.com/v1/shortLinks?key=${api_key}`,
        gzip: true,
        json: true,
        body: {
          longDynamicLink: longLink,
          suffix: {
            option: 'SHORT',
          },
        },
      };
      let body;
      try {
        body = await rp(options);
        // eslint-disable-next-line @typescript-eslint/no-explicit-any
      } catch (e: any) {
        return sendError(res, e.error.error);
      }
      console.log('got link response: ' + JSON.stringify(body));

      try {
        EventEmitter.defaultMaxListeners = 200;

        return sendSuccess(res, { result: body });
        // eslint-disable-next-line @typescript-eslint/no-explicit-any
      } catch (e: any) {
        console.log('getProfileLink failure', e);
        return sendError(res, 'Unable to getProfileLink');
      }
    });
  });