add login sdk

backend/src/account.ts

@@ -0,0 +1,50 @@
+import db from './storage/db';
+
+
+const createUser = ( uid: string, username: string, email: string ): Promise<boolean> => {
+    return new Promise( ( resolve, reject ) => {
+        db.writeDataSimple( 'users', 'uid', uid, { 'uid': uid, 'username': username, 'email': email } ).then( () => {
+            resolve( true );
+        } ).catch( err => {
+            reject( err );
+        } );
+    } );
+}
+
+const saveUserData = ( uid: string, data: object ): Promise<boolean> => {
+    return new Promise( ( resolve, reject ) => {
+        db.writeDataSimple( 'users', 'uid', uid, { 'data': data } ).then( () => {
+            resolve( true );
+        } ).catch( err => {
+            reject( err );
+        } );
+    } );
+}
+
+const checkUser = ( uid: string ): Promise<boolean> => {
+    return new Promise( ( resolve, reject ) => {
+        db.checkDataAvailability( 'users', 'uid', uid ).then( res => {
+            resolve( res );
+        } ).catch( err => {
+            reject( err );
+        } )
+    } );
+}
+
+
+const getUserData = ( uid: string ): Promise<object> => {
+    return new Promise( ( resolve, reject ) => {
+        db.getDataSimple( 'users', 'uid', uid ).then( data => {
+            resolve( data );
+        } ).catch( err => {
+            reject( err );
+        } );
+    } );
+}
+
+export default {
+    createUser,
+    saveUserData,
+    checkUser,
+    getUserData
+}