trackers module

client/src/helpers/whotracksme.js

@@ -0,0 +1,44 @@
+import trackersDb from './whotracksmedb.json';
+
+/**
+  @typedef TrackerData
+  @type {object}
+  @property {string} id - tracker ID.
+  @property {string} name - tracker name.
+  @property {number} age - tracker category.
+ */
+
+/**
+ * Gets tracker data in the whotracksme database
+ *
+ * @param {String} domainName domain name to check
+ * @returns {TrackerData} tracker data or null if no matching tracker found
+ */
+export const getTrackerData = (domainName) => {
+    if (!domainName) {
+        return null;
+    }
+
+    const parts = domainName.split(/\./g).reverse();
+    let hostToCheck = '';
+
+    // Check every subdomain except the TLD
+    for (let i = 1; i < parts.length; i += 1) {
+        hostToCheck = hostToCheck + (i > 0 ? '.' : '') + parts[i];
+        const trackerId = trackersDb.trackerDomains[hostToCheck];
+
+        if (trackerId) {
+            const trackerData = trackersDb.trackers[trackerId];
+            const categoryName = trackersDb.categories[trackerData.categoryId];
+
+            return {
+                id: trackerId,
+                name: trackerData.name,
+                category: categoryName,
+            };
+        }
+    }
+
+    // No tracker found for the specified domain
+    return null;
+};