Add endpoint to retrieve posts by tag with validation

dbTools/post.js

@@ -233,7 +233,7 @@ postDB = (DB)=>{
         if(!DB.ObjectID.isValid(profileId)) return [];
         const profile = await DB.getProfile(profileId);
         if(!profile) return [];
-        query = {
+        const query = {
             nonOrganicType: null // Exlcude news
         };
         return DB.postCols.find(query).sort({lastUpdated: -1}).limit(50).toArray().then(async (posts)=>{
@@ -244,6 +244,25 @@ postDB = (DB)=>{
         });
     }
 
+    // For all post with tags const query = { content: { $regex: '#\\w+', $options: 'i' } };
+    DB.getPostsByTag = async (tag, profileId, limit = 50) => {
+        if(!DB.ObjectID.isValid(profileId)) return [];
+        const profile = await DB.getProfile(profileId);
+        if(!profile) return [];
+        let query = {
+            content: {
+                "$regex": tag
+            },
+            nonOrganicType: null // Exlcude news
+        };
+        return DB.postCols.find(query).sort({lastUpdated: -1}).limit(limit).toArray().then(async (posts)=>{
+            return await filterPrivateGroups(posts, profile);
+        }).catch((err)=>{
+            console.log(err);
+            return false;
+        });
+    }
+
     DB.getNews = async () => {
         let query = {
             nonOrganicType: 'News'