Add trackers, rework some text

client/src/helpers/trackers/trackers.js

@@ -0,0 +1,103 @@
+import whotracksmeDb from './whotracksme.json';
+import adguardDb from './adguard.json';
+import { REPOSITORY } from '../constants';
+
+/**
+  @typedef TrackerData
+  @type {object}
+  @property {string} id - tracker ID.
+  @property {string} name - tracker name.
+  @property {string} url - tracker website url.
+  @property {number} category - tracker category.
+  @property {source} source - tracker data source.
+ */
+
+/**
+ * Tracker data sources
+ */
+export const sources = {
+    WHOTRACKSME: 1,
+    ADGUARD: 2,
+};
+
+/**
+ * Gets tracker data in the specified database
+ *
+ * @param {String} domainName domain name to check
+ * @param {*} trackersDb trackers database
+ * @param {number} source source ID
+ * @returns {TrackerData} tracker data or null if no matching tracker found
+ */
+const getTrackerDataFromDb = (domainName, trackersDb, source) => {
+    if (!domainName) {
+        return null;
+    }
+
+    const parts = domainName.split(/\./g).reverse();
+    let hostToCheck = '';
+
+    // Check every subdomain
+    for (let i = 0; i < parts.length; i += 1) {
+        hostToCheck = parts[i] + (i > 0 ? '.' : '') + hostToCheck;
+        const trackerId = trackersDb.trackerDomains[hostToCheck];
+
+        if (trackerId) {
+            const trackerData = trackersDb.trackers[trackerId];
+            const categoryName = trackersDb.categories[trackerData.categoryId];
+
+            return {
+                id: trackerId,
+                name: trackerData.name,
+                url: trackerData.url,
+                category: categoryName,
+                source,
+            };
+        }
+    }
+
+    // No tracker found for the specified domain
+    return null;
+};
+
+/**
+ * Gets the source metadata for the specified tracker
+ * @param {TrackerData} trackerData tracker data
+ */
+export const getSourceData = (trackerData) => {
+    if (!trackerData || !trackerData.source) {
+        return null;
+    }
+
+    if (trackerData.source === sources.WHOTRACKSME) {
+        return {
+            name: 'Whotracks.me',
+            url: `https://whotracks.me/trackers/${trackerData.id}.html`,
+        };
+    } else if (trackerData.source === sources.ADGUARD) {
+        return {
+            name: 'AdGuard',
+            url: REPOSITORY.TRACKERS_DB,
+        };
+    }
+
+    return null;
+};
+
+/**
+ * Gets tracker data from the trackers 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;
+    }
+
+    let data = getTrackerDataFromDb(domainName, adguardDb, sources.ADGUARD);
+    if (!data) {
+        data = getTrackerDataFromDb(domainName, whotracksmeDb, sources.WHOTRACKSME);
+    }
+
+    return data;
+};