SharePoint like Mobile Backend

Hello, I am using SharePoint 2016 on premise and I need to use the SharePoint data, like documents and items in a Ionic Mobile App. But in SharePoint 2016 I have files that the a user can't see, so I need get only the items that user can see (has permission). I am using SharePoint permissions... But, how can I should to call the API, like search (or another) SharePoint Rest API and retrieve only the files that user has permission? 

Thanks

Everton