I'm projecting a hybrid app using cordova. My app will offer a monthly subscription to change the user plan(default or premium account).
So, as I'm making a hybrid app, I'm programming in web language(HTML, JS, PHP,...).
But, according the Google's policy center, I have to use the Google Play in-app billing as the method of payment.
How can I integrate the Google play in-app billing system if it only has support for JAVA(I would have to use Android Studio, but I won't use it, because I'm making a hybrid app using the Intel xdk)?