Defined how to parse visit stats and how to render them

src/visits/services/VisitsParser.js

@@ -0,0 +1,101 @@
+import { forEach, isNil, isEmpty } from 'ramda';
+
+const osFromUserAgent = userAgent => {
+  const lowerUserAgent = userAgent.toLowerCase();
+
+  switch (true) {
+    case (lowerUserAgent.indexOf('linux') >= 0):
+      return 'Linux';
+    case (lowerUserAgent.indexOf('windows') >= 0):
+      return 'Windows';
+    case (lowerUserAgent.indexOf('mac') >= 0):
+      return 'MacOS';
+    case (lowerUserAgent.indexOf('mobi') >= 0):
+      return 'Mobile';
+    default:
+      return 'Others';
+  }
+};
+
+const browserFromUserAgent = userAgent => {
+  const lowerUserAgent = userAgent.toLowerCase();
+
+  switch (true) {
+    case (lowerUserAgent.indexOf('firefox') >= 0):
+      return 'Firefox';
+    case (lowerUserAgent.indexOf('chrome') >= 0):
+      return 'Chrome';
+    case (lowerUserAgent.indexOf('safari') >= 0):
+      return 'Safari';
+    case (lowerUserAgent.indexOf('opera') >= 0):
+      return 'Opera';
+    case (lowerUserAgent.indexOf('msie') >= 0):
+      return 'Internet Explorer';
+    default:
+      return 'Others';
+  }
+};
+
+const extractDomain = url => {
+  const domain = url.indexOf('://') > -1 ? url.split('/')[2] : url.split('/')[0];
+  return domain.split(':')[0];
+};
+
+// FIXME Refactor these foreach statements which mutate a stats object
+export class VisitsParser {
+  processOsStats = visits => {
+    const stats = {};
+
+    forEach(visit => {
+      const userAgent = visit.userAgent;
+      const os = isNil(userAgent) ? 'Others' : osFromUserAgent(userAgent);
+
+      stats[os] = typeof stats[os] === 'undefined' ? 1 : stats[os] + 1;
+    }, visits);
+
+    return stats;
+  };
+
+  processBrowserStats = visits => {
+    const stats = {};
+
+    forEach(visit => {
+      const userAgent = visit.userAgent;
+      const browser = isNil(userAgent) ? 'Others' : browserFromUserAgent(userAgent);
+
+      stats[browser] = typeof stats[browser] === 'undefined' ? 1 : stats[browser] + 1;
+    }, visits);
+
+    return stats;
+  };
+
+  processReferrersStats = visits => {
+    const stats = {};
+
+    forEach(visit => {
+      const notHasDomain = isNil(visit.referer) || isEmpty(visit.referer);
+      const domain = notHasDomain ? 'Unknown' : extractDomain(visit.referer);
+
+      stats[domain] = typeof stats[domain] === 'undefined' ? 1 : stats[domain] + 1;
+    }, visits);
+
+    return stats;
+  };
+
+  processCountriesStats = visits => {
+    const stats = {};
+
+    forEach(({ visitLocation }) => {
+      const notHasCountry = isNil(visitLocation)
+        || isNil(visitLocation.countryName)
+        || isEmpty(visitLocation.countryName);
+      const country = notHasCountry ? 'Unknown' : visitLocation.countryName;
+
+      stats[country] = typeof stats[country] === 'undefined' ? 1 : stats[country] + 1;
+    }, visits);
+
+    return stats;
+  };
+}
+
+export default new VisitsParser();