Added tag extractor method and spec

src/services/matcher/matcher.service.js

@@ -0,0 +1,23 @@
+export const mentionMatchesUrl = (attention, url) => {
+  if (url === attention.statusnet_profile_url) {
+    return true
+  }
+  const [namepart, instancepart] = attention.screen_name.split('@')
+  const matchstring = new RegExp('://' + instancepart + '/.*' + namepart + '$', 'g')
+
+  return !!url.match(matchstring)
+}
+
+/**
+ * Extract tag name from pleroma or mastodon url.
+ * i.e https://bikeshed.party/tag/photo or https://quey.org/tags/sky
+ * @param {string} url
+ */
+export const extractTagFromUrl = (url) => {
+  const regex = /tag[s]*\/(\w+)$/g
+  const result = regex.exec(url)
+  if (!result) {
+    return false
+  }
+  return result[1]
+}

src/services/mention_matcher/mention_matcher.js

@@ -1,9 +0,0 @@
-
-export const mentionMatchesUrl = (attention, url) => {
-  if (url === attention.statusnet_profile_url) {
-    return true
-  }
-  const [namepart, instancepart] = attention.screen_name.split('@')
-  const matchstring = new RegExp('://' + instancepart + '/.*' + namepart + '$', 'g')
-  return !!url.match(matchstring)
-}