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)
-}

test/unit/specs/services/matcher/matcher.spec.js

@@ -1,4 +1,4 @@
-import * as MentionMatcher from 'src/services/mention_matcher/mention_matcher.js'
+import * as MatcherService from 'src/services/matcher/matcher.service.js'
 
 const localAttn = () => ({
   id: 123,
@@ -16,48 +16,67 @@ const externalAttn = () => ({
   statusnet_profile_url: 'https://instance.com/users/person'
 })
 
-describe('MentionMatcher', () => {
+describe('MatcherService', () => {
   describe.only('mentionMatchesUrl', () => {
     it('should match local mention', () => {
       const attention = localAttn()
       const url = 'https://instance.com/users/person'
 
-      expect(MentionMatcher.mentionMatchesUrl(attention, url)).to.eql(true)
+      expect(MatcherService.mentionMatchesUrl(attention, url)).to.eql(true)
     })
 
     it('should not match a local mention with same name but different instance', () => {
       const attention = localAttn()
       const url = 'https://website.com/users/person'
 
-      expect(MentionMatcher.mentionMatchesUrl(attention, url)).to.eql(false)
+      expect(MatcherService.mentionMatchesUrl(attention, url)).to.eql(false)
     })
 
     it('should match external pleroma mention', () => {
       const attention = externalAttn()
       const url = 'https://instance.com/users/person'
 
-      expect(MentionMatcher.mentionMatchesUrl(attention, url)).to.eql(true)
+      expect(MatcherService.mentionMatchesUrl(attention, url)).to.eql(true)
     })
 
     it('should not match external pleroma mention with same name but different instance', () => {
       const attention = externalAttn()
       const url = 'https://website.com/users/person'
 
-      expect(MentionMatcher.mentionMatchesUrl(attention, url)).to.eql(false)
+      expect(MatcherService.mentionMatchesUrl(attention, url)).to.eql(false)
     })
 
     it('should match external mastodon mention', () => {
       const attention = externalAttn()
       const url = 'https://instance.com/@person'
 
-      expect(MentionMatcher.mentionMatchesUrl(attention, url)).to.eql(true)
+      expect(MatcherService.mentionMatchesUrl(attention, url)).to.eql(true)
     })
 
     it('should not match external mastodon mention with same name but different instance', () => {
       const attention = externalAttn()
       const url = 'https://website.com/@person'
 
-      expect(MentionMatcher.mentionMatchesUrl(attention, url)).to.eql(false)
+      expect(MatcherService.mentionMatchesUrl(attention, url)).to.eql(false)
+    })
+  })
+  describe.only('extractTagFromUrl', () => {
+    it('should return tag name from valid pleroma url', () => {
+      const url = 'https://website.com/tag/photo'
+
+      expect(MatcherService.extractTagFromUrl(url)).to.eql('photo')
+    })
+
+    it('should return tag name from valid mastodon url', () => {
+      const url = 'https://website.com/tags/sky'
+
+      expect(MatcherService.extractTagFromUrl(url)).to.eql('sky')
+    })
+
+    it('should not return string but false if invalid url', () => {
+      const url = 'https://website.com/users/sky'
+
+      expect(MatcherService.extractTagFromUrl(url)).to.eql(false)
     })
   })
 })