Matomo integration (#7009)

app/components/Analytics.tsx

@@ -2,13 +2,14 @@
 /* global ga */
 import escape from "lodash/escape";
 import * as React from "react";
-import { IntegrationService } from "@shared/types";
+import { IntegrationService, PublicEnv } from "@shared/types";
 import env from "~/env";
 
 type Props = {
   children?: React.ReactNode;
 };
 
+// TODO: Refactor this component to allow injection from plugins
 const Analytics: React.FC = ({ children }: Props) => {
   // Google Analytics 3
   React.useEffect(() => {
@@ -43,12 +44,16 @@ const Analytics: React.FC = ({ children }: Props) => {
   React.useEffect(() => {
     const measurementIds = [];
 
-    if (env.analytics.service === IntegrationService.GoogleAnalytics) {
-      measurementIds.push(escape(env.analytics.settings?.measurementId));
-    }
     if (env.GOOGLE_ANALYTICS_ID?.startsWith("G-")) {
       measurementIds.push(env.GOOGLE_ANALYTICS_ID);
     }
+
+    (env.analytics as PublicEnv["analytics"]).forEach((integration) => {
+      if (integration.service === IntegrationService.GoogleAnalytics) {
+        measurementIds.push(escape(integration.settings?.measurementId));
+      }
+    });
+
     if (measurementIds.length === 0) {
       return;
     }
@@ -75,6 +80,32 @@ const Analytics: React.FC = ({ children }: Props) => {
     document.getElementsByTagName("head")[0]?.appendChild(script);
   }, []);
 
+  // Matomo
+  React.useEffect(() => {
+    (env.analytics as PublicEnv["analytics"]).forEach((integration) => {
+      if (integration.service !== IntegrationService.Matomo) {
+        return;
+      }
+
+      // @ts-expect-error - Matomo global variable
+      const _paq = (window._paq = window._paq || []);
+      _paq.push(["trackPageView"]);
+      _paq.push(["enableLinkTracking"]);
+      (function () {
+        const u = integration.settings?.instanceUrl;
+        _paq.push(["setTrackerUrl", u + "matomo.php"]);
+        _paq.push(["setSiteId", integration.settings?.measurementId]);
+        const d = document,
+          g = d.createElement("script"),
+          s = d.getElementsByTagName("script")[0];
+        g.type = "text/javascript";
+        g.async = true;
+        g.src = u + "matomo.js";
+        s.parentNode?.insertBefore(g, s);
+      })();
+    });
+  }, []);
+
   return <>{children}</>;
 };