FirebaseFunctions.getinstance() not finishing - firebase

Question

I am using FirebaseFunctions as well as https://github.com/voltrue2/in-app-purchase to validate purchases. I am having trouble sending the data back to my client. In the logs of my functions everything goes well and I get the result I want, but as I understand you have to return a promise in order to get the data back to the client when using Firebase's onCall https trigger. The code for my oncall trigger is here.
var iap = require('in-app-purchase');
var purchaseData;
const receipt = data;
iap.config({
googlePublicKeyPath: 'acualpublickey' ,
googleAccToken: 'actualtoken',
googleRefToken: 'actualtoken',
googleClientID: 'actualID',
googleClientSecret: 'actual seceret',
});
iap.setup()
.then(() => {
console.log("receipt: ", receipt)
return iap.validate(receipt).then(onSuccess).catch(onError);
}).catch((error) => {
console.log("error setup: " + error);
throw error;
});
function onSuccess(validatedData) {
var options = {
ignoreExpired: true // purchaseData will NOT contain exipired subscription items
};
purchaseData = iap.getPurchaseData(validatedData, options);
console.log("PurchseData : ", purchaseData);
console.log("ValidatedData : ", validatedData);
return purchaseData;
}
function onError(error) {
console.log("error onError: " + error);
throw error;
}
the function it is called on to be used is this one
void receiptJSONvalidation(String receipt){
if (receipt != null) {
try {
JSONObject jsonObject = new JSONObject(receipt);
Task<Object> validatedReceipt = validation(jsonObject);
validatedReceipt.addOnCompleteListener(this, new OnCompleteListener<Object>() {
#Override
public void onComplete(#NonNull Task<Object> task) {
if (!task.isSuccessful()) {
Exception e = task.getException();
if (e instanceof FirebaseFunctionsException) {
FirebaseFunctionsException ffe = (FirebaseFunctionsException) e;
FirebaseFunctionsException.Code code = ffe.getCode();
Object details = ffe.getDetails();
errorAlert("task unsuccessful: " + details.toString());
} else {
errorAlert("Error onComplete: " + e.getLocalizedMessage());
}
// ...
} else{
Gson gson = new Gson();
String taskResult = gson.toJson(task.getResult());
errorAlert("taskResult: " + taskResult);
}
}
});
} catch (JSONException e) {
errorAlert("Error Json: " + e.getLocalizedMessage());
}
} else {
errorAlert("You are not subscribed. Please purchase a subscription.");
}
}
the validation method is this
private Task<Object> validation(JSONObject receipt){
mFunctions = FirebaseFunctions.getInstance();
return mFunctions.getHttpsCallable("receiptValidation").call(receipt)
.continueWith(new Continuation<HttpsCallableResult,Object>() {
public Object then(#NonNull Task<HttpsCallableResult> task) throws Exception {
// This continuation runs on either success or failure, but if the task
// has failed then getResult() will throw an Exception which will be
// propagated down.
Object result = task.getResult().getData();
return result;
}
});
}
When I get to both taskResult and result I am getting null while my logs have the actual data I need. I tried to follow the documentation for these functions yet I still don't get what is needed. Also there seems to be a problem with my app not allowing the firebase function to finish. Sometimes the result pops up null before the function is even over. The function will say it took about 8 sec. Yet the alert pops up in way less time.