Swift Image gallery with fullscreen slider

I want to build a facebook-like image gallery but don't know where to start from. Here's what i think i should do:

• CollectionView that shows thumbnails based on an array


• On row-click, i modally open a pageViewController based on the same array of images


• On Swipe left-right, i go to the next or previous image


• On Swipe up-down, i close this view and go back to my collectionview

Is this logic correct/the best practice? Maybe it's been already done by someone.