rsevil/applinks_dynamiclinks_proxy.js

## applinks_dynamiclinks_proxy.js
// server.js
const express = require('express');
const app = express();
const path = require('path');
const http = require('http');
const https = require('https');

const forceSSL = function () {
  return function (req, res, next) {
    if (req.headers['x-forwarded-proto'] !== 'https') {
      return res.redirect(
                ['https://', req.get('Host'), req.url].join('')
            );
    }
    next();
  };
};

// Instruct the app
// to use the forceSSL
// middleware
app.use(forceSSL());

// Run the app by serving the static files
// in the dist directory
app.use(express.static(__dirname + '/dist'));

app.get('/link', (req, res) => {
  // you have to options:
  // - if you use dl, then you must send the entire deeplink: https://your.page.link/<trashid>
  // - if you use id, then you must send only the shortlink id: <trashid>
  const deeplink = req.query.dl || ('https://your.page.link/' + req.query.id);
  const imageUrl = 'https://www.google.com.ar/images/branding/googlelogo/2x/googlelogo_color_272x92dp.png';
  // here you can use more query string variables to add more info to metadata attributes,
  // doing some requests or appending them directly
  shareOther(res, deeplink, imageUrl);
});

// Start the app by listening on the default
// Heroku port
app.listen(process.env.PORT || 8080);

function shareOther(res, deeplink, imageUrl) {
  res.send(buildShareContent({
    deeplink: deeplink,
    title: 'Some title',
    description: 'Some description',
    image_url: imageUrl
  }));
}

const buildShareContent = function(data) {
  return ('<!DOCTYPE html>' +
  '<html>' +
    '<head>' +
      '<meta property="fb:app_id" content="your_facebook_app_id" />' +
      '<meta property="al:android:package" content="your_app_package" />' +
      '<meta property="al:android:app_name" content="your_app_name" />' +
      '<meta property="al:android:url" content="'+ data.deeplink +'" />' +
      '<meta property="al:ios:url" content="'+ data.deeplink +'" />' +
      '<meta property="al:ios:app_store_id" content="your_app_store_id" />' +
      '<meta property="al:ios:app_name" content="your_app_name" />' +
      '<meta property="al:web:should_fallback" content="true" />' +
      '<meta property="al:web:url" content="some_url_to_view_when_fallback_is_needed" />' + // dont know if this is required

      '<meta property="og:title" content="'+ data.title + '" />' +
      '<meta property="og:description" content="'+ data.description +'" />' +
      '<meta property="og:image" content="'+ data.image_url + '" />' +
      '<meta property="og:image:width" content="'+(data.width || 640)+'" />' + // this is for the preview image to load on first share
      '<meta property="og:image:height" content="'+(data.height || 640)+'" />' + // this is for the preview image to load on first share

      '<meta name="twitter:card" content="summary" />' +
      '<meta name="twitter:site" content="@yourtag" />' +
      '<meta name="twitter:creator" content="@yourtag" />' +
      '<meta name="twitter:title" content="'+ data.title +'" />' +
    '</head>' +
    '<body>' +
      '<script>' +
        'window.location = "'+ data.deeplink +'"' +
      '</script>' +
    '</body>' +
  '</html>')
}


## dynamic-links.service.ts
import { Injectable } from '@angular/core'
import { BaseService } from './base.service'
import { HttpClient } from '@angular/common/http';
import { map } from 'rxjs/operators';
import { Observable } from 'rxjs';

const config = require('./../../../../config.json');

@Injectable()
export class DynamicLinksService extends BaseService {
    constructor(
        private nativehttp: HttpClient)
    {
        super();
    }

    createShortLink(data: any) : Observable<string> {
        var firebaseApiKey = "<your_api_key>";
        return this.nativehttp.post<any>(`https://firebasedynamiclinks.googleapis.com/v1/shortLinks?key=${firebaseApiKey}`, {
            dynamicLinkInfo: {
                domainUriPrefix: "https://your.page.link",
                link: "your_url_to_link" + "?data=" + encodeURIComponent(JSON.stringify(data)),
                androidInfo: { androidPackageName: "your_android_package_name" },
                iosInfo: {
                    iosBundleId: "your_iOS_bundle_id",
                    iosAppStoreId: "your_iOS_appstore_id" //this is very important for dynamiclinks to show the appstore when app is not installed
                }
            }
        })
        .pipe(map(link => link.shortLink))
        .pipe(map(shortLink => {
            var id = shortLink.substring(shortLink.lastIndexOf('/') + 1);
            return "https://www.your_applinks_dynamiclinks_proxy_domain.com/link?id={id}".replace("{id}", id) + '&' + data.query;
        }))
        .catch(this.handleError);
    }
}
	// server.js
	const express = require('express');
	const app = express();
	const path = require('path');
	const http = require('http');
	const https = require('https');

	const forceSSL = function () {
	return function (req, res, next) {
	if (req.headers['x-forwarded-proto'] !== 'https') {
	return res.redirect(
	['https://', req.get('Host'), req.url].join('')
	);
	}
	next();
	};
	};

	// Instruct the app
	// to use the forceSSL
	// middleware
	app.use(forceSSL());

	// Run the app by serving the static files
	// in the dist directory
	app.use(express.static(__dirname + '/dist'));

	app.get('/link', (req, res) => {
	// you have to options:
	// - if you use dl, then you must send the entire deeplink: https://your.page.link/<trashid>
	// - if you use id, then you must send only the shortlink id: <trashid>
	const deeplink = req.query.dl \|\| ('https://your.page.link/' + req.query.id);
	const imageUrl = 'https://www.google.com.ar/images/branding/googlelogo/2x/googlelogo_color_272x92dp.png';
	// here you can use more query string variables to add more info to metadata attributes,
	// doing some requests or appending them directly
	shareOther(res, deeplink, imageUrl);
	});

	// Start the app by listening on the default
	// Heroku port
	app.listen(process.env.PORT \|\| 8080);

	function shareOther(res, deeplink, imageUrl) {
	res.send(buildShareContent({
	deeplink: deeplink,
	title: 'Some title',
	description: 'Some description',
	image_url: imageUrl
	}));
	}

	const buildShareContent = function(data) {
	return ('<!DOCTYPE html>' +
	'<html>' +
	'<head>' +
	'<meta property="fb:app_id" content="your_facebook_app_id" />' +
	'<meta property="al:android:package" content="your_app_package" />' +
	'<meta property="al:android:app_name" content="your_app_name" />' +
	'<meta property="al:android:url" content="'+ data.deeplink +'" />' +
	'<meta property="al:ios:url" content="'+ data.deeplink +'" />' +
	'<meta property="al:ios:app_store_id" content="your_app_store_id" />' +
	'<meta property="al:ios:app_name" content="your_app_name" />' +
	'<meta property="al:web:should_fallback" content="true" />' +
	'<meta property="al:web:url" content="some_url_to_view_when_fallback_is_needed" />' + // dont know if this is required

	'<meta property="og:title" content="'+ data.title + '" />' +
	'<meta property="og:description" content="'+ data.description +'" />' +
	'<meta property="og:image" content="'+ data.image_url + '" />' +
	'<meta property="og:image:width" content="'+(data.width \|\| 640)+'" />' + // this is for the preview image to load on first share
	'<meta property="og:image:height" content="'+(data.height \|\| 640)+'" />' + // this is for the preview image to load on first share

	'<meta name="twitter:card" content="summary" />' +
	'<meta name="twitter:site" content="@yourtag" />' +
	'<meta name="twitter:creator" content="@yourtag" />' +
	'<meta name="twitter:title" content="'+ data.title +'" />' +
	'</head>' +
	'<body>' +
	'<script>' +
	'window.location = "'+ data.deeplink +'"' +
	'</script>' +
	'</body>' +
	'</html>')
	}
	import { Injectable } from '@angular/core'
	import { BaseService } from './base.service'
	import { HttpClient } from '@angular/common/http';
	import { map } from 'rxjs/operators';
	import { Observable } from 'rxjs';

	const config = require('./../../../../config.json');

	@Injectable()
	export class DynamicLinksService extends BaseService {
	constructor(
	private nativehttp: HttpClient)
	{
	super();
	}

	createShortLink(data: any) : Observable<string> {
	var firebaseApiKey = "<your_api_key>";
	return this.nativehttp.post<any>(`https://firebasedynamiclinks.googleapis.com/v1/shortLinks?key=${firebaseApiKey}`, {
	dynamicLinkInfo: {
	domainUriPrefix: "https://your.page.link",
	link: "your_url_to_link" + "?data=" + encodeURIComponent(JSON.stringify(data)),
	androidInfo: { androidPackageName: "your_android_package_name" },
	iosInfo: {
	iosBundleId: "your_iOS_bundle_id",
	iosAppStoreId: "your_iOS_appstore_id" //this is very important for dynamiclinks to show the appstore when app is not installed
	}
	}
	})
	.pipe(map(link => link.shortLink))
	.pipe(map(shortLink => {
	var id = shortLink.substring(shortLink.lastIndexOf('/') + 1);
	return "https://www.your_applinks_dynamiclinks_proxy_domain.com/link?id={id}".replace("{id}", id) + '&' + data.query;
	}))
	.catch(this.handleError);
	}
	}