Handlers for GET and POST engages added, renders numbers of unique engagements per post

client-solid/src/Util/api.ts

@@ -90,9 +90,13 @@ export async function getComments(
   return data;
 }
 
-/** Incomplete */
-export async function engagePost(postId: string): Promise<void> {
-  const res = await fetch(`/api/engage_post?post_id=${postId}`);
+/** 
+ * Gets the Engagement counts for a post by postId
+ * @param postId The id of the post
+ * @returns {Promise<number>} A promise that contains number of post engages
+ */
+export async function getEngagementCount(postId: string): Promise<number> {
+  const res = await fetch(`/api/posts/${postId}/engage`);
   const data = await res.json();
   return data;
 }