build.gradle

android {
    applicationVariants.all { variant ->
        delete rootProject.buildDir
        if(variant.name.toString().toLowerCase().contains("appgallery")){
            copy {
                from "src/appgallery"
                include "agconnect-services.json"
                into "."
            }
        } else if(variant.name.toString().toLowerCase().contains("playstore")){
            def isThereAgconnectFile =  fileTree("src/appGallery").filter { it.isFile() }
                    .files.name.contains("agconnect-services.json")
            if(isThereAgconnectFile){
                clean{
                    delete "$rootProject.projectDir/app/agconnect-services.json"
                }
            }
        }
    }
}