working on users having multiple profiles

dbTools/profile.js

@@ -0,0 +1,49 @@
+const DBName = "EMI_SOCIAL";
+
+let userProfileCache = {};
+
+userDB = (DB) => {
+    DB.profileCols = DB.db.db(DBName).collection("profiles");
+
+    DB.newProfile = (profileObj) => {
+        return DB.profileCols.insertOne(profileObj.toObj()).catch((err) => {
+            console.log(err);
+            return false;
+        });
+    }
+
+    DB.getProfile = async (profileId) => {
+        if (userProfileCache[profileId]) return userProfileCache[profileId];
+        const _id = DB.ObjectID(profileId);
+        let r = await DB.profileCols.findOne({ _id }).catch((err) => {
+            console.log(err);
+            return false;
+        });
+        if (r) userProfileCache[profileId] = r;
+        return r;
+    }
+
+    DB.getProfiles = async (userId) => {
+        const userid = DB.ObjectID(userId);
+        return await DB.profileCols.find({ userid }).toArray().catch((err) => {
+            console.log(err);
+            return false;
+        });
+    }
+
+    DB.latestProfile = async (userId) => {
+        const userid = DB.ObjectID(userId);
+        let r = await DB.profileCols.find({ userid })
+                .sort({ lastUpdate: -1 }).limit(1)
+                .toArray().catch((err) => {
+            console.log(err);
+            return false;
+        });
+        if (r[0]) userProfileCache[r[0].id] = r[0];
+        return r[0];
+    }
+
+
+}
+
+module.exports = userDB;