Bringing back immoscout (#21)

Bringing back immoscout support 🎉

lib/services/scrapingAnt.js

@@ -0,0 +1,24 @@
+const { metaInformation } = require('../provider/immoscout');
+//to better confure re-capture chose a random proxy each time we do a call
+const proxies = ['ae', 'br', 'cn', 'de', 'es', 'fr', 'gb', 'hk', 'in', 'it', 'il', 'jp', 'nl', 'ru', 'sa', 'us', 'cz'];
+const config = require('../../conf/config.json');
+
+const isImmoscout = (id) => {
+  return id.toLowerCase() === metaInformation.id;
+};
+
+exports.transformUrlForScrapingAnt = (url, id) => {
+  const randomProxy = proxies[Math.floor(Math.random() * proxies.length)];
+
+  if (isImmoscout(id)) {
+    //only do calls to scrapingAnt when dealing with Immoscout
+    url = `https://api.scrapingant.com/v1/general?url=${encodeURIComponent(url)}&proxy_country=${randomProxy}`;
+  }
+  return url;
+};
+
+exports.isScrapingAntApiKeySet = () => {
+  return config.scrapingAnt != null && config.scrapingAnt.apiKey != null && config.scrapingAnt.apiKey.length > 0;
+};
+
+exports.isImmoscout = isImmoscout;