Help with ionic and wordpress reset api

hey everyone , i’m developing a new app for amagazine and i’m looking for a way to load posts categories in my posts pages , let me Explain it more ,
my app based on ionic and api reset wp-json , i wanna load the categories of the website i use to my app which mean when i scroll down i wanna see the article name and the date olso the thumbnail used in the post and the name of the category which is listed in ,
and any post should placed on the category name in the menu ,
i’ll apperciate if someone show me how because im trying for 72hours now with no reason i can’t do this , any help