feat: respect astros config.site configuration

README.md

@@ -13,6 +13,9 @@ import matomo from '@jop-software/astro-matomo';
 
 export default defineConfig({
   integrations: [
+    // We only track site views when this matches the host the user is on.
+    // If the configuration is empty, every page view gets tracked.
+    site: "https://example.com",
     matomo({
       baseUrl: "https://analytics.example.com/",
       siteId: 1
@@ -21,4 +24,4 @@ export default defineConfig({
 });
 ```
 
-<div align=center>&copy 2022, <a href="https://jop-software.de">jop-software Inh. Johannes Przymusinski</a></div>
+<div align=center>&copy 2022, <a href="https://jop-software.de">jop-software Inh. Johannes Przymusinski</a></div>

src/index.js

@@ -3,9 +3,23 @@ const createPlugin = (options) => {
 		name: "@jop-software/astro-matomo",
 		hooks: {
 			"astro:config:setup": async ({ config, injectScript }) => {
+				/**
+				 * @prop {string} host - The URL to compare window.location.host to, to determine weather we should track the user or not.
+				 */
+				const matomo = {
+					host: "",
+				};
+
+				if (config.site) {
+					let url = new URL(config.site);
+					matomo.host = url.host;
+				}
+
 				injectScript(
 					"page",
-					`import { init } from '@jop-software/astro-matomo/matomo.js'; init('${options.baseUrl}', ${options.siteId});`
+					`import { init } from '@jop-software/astro-matomo/matomo.js'; window.matomo = ${JSON.stringify(
+						matomo
+					)}; init('${options.baseUrl}', ${options.siteId});`
 				);
 			},
 		},

src/matomo.js

@@ -1,4 +1,15 @@
 export function init(baseUrl, siteId) {
+	// Skip tracking when either window.matomo.host is emptry or it does not match the current host.
+	if (
+		window.matomo.host !== "" &&
+		window.location.host !== window.matomo.host
+	) {
+		console.info(
+			`[@jop-software/astro-matomo]: Skip tracking because the host does not match.`
+		);
+		return;
+	}
+
 	var _paq = (window._paq = window._paq || []);
 	/* tracker methods like "setCustomDimension" should be called before "trackPageView" */
 	_paq.push(["trackPageView"]);