feat(lib): create getTagsAndNumberOfPosts function

mateusfg7 · Jun 13, 2023 · e37eee6 · e37eee6
1 parent 1d2319e
commit e37eee6
Showing 1 changed file with 21 additions and 0 deletions.
diff --git a/src/shared/lib/tags.ts b/src/shared/lib/tags.ts
@@ -1,6 +1,7 @@
 import { allPosts } from 'contentlayer/generated'
 import { slug } from '@/shared/lib/slug'
 import { removeRepeatedValuesFromArray } from '@/shared/lib/remove-repeated-values-from-array'
+import { getFrequencyOfValue } from '@/shared/lib/get-frequency-of-value'
 
 const getRawTagListFromPosts = (): string[] => {
   const listOfTagList = allPosts
@@ -21,6 +22,26 @@ const getRawTagListFromPosts = (): string[] => {
 export const getUniqueTagListFromPosts = () =>
   removeRepeatedValuesFromArray(getRawTagListFromPosts())
 
+export interface TagsAndNumberOfPosts {
+  tag: string
+  numberOfPosts: number
+}
+export function getTagsAndNumberOfPosts(): TagsAndNumberOfPosts[] {
+  const rawTagList = getRawTagListFromPosts()
+  const uniqueTagList = getUniqueTagListFromPosts()
+
+  const tagsAndNumberOfPosts = uniqueTagList.map(tag => {
+    const numberOfPosts = getFrequencyOfValue(rawTagList, tag)
+
+    return {
+      tag,
+      numberOfPosts
+    }
+  })
+
+  return tagsAndNumberOfPosts
+}
+
 export function getPostListBasedOnTag(tag: string) {
   const filteredPostList = allPosts.filter(post => {
     const listOfTags = post.tags.split(',').map(rawTag => slug(rawTag.trim()))