feat(amazon-payments): add a lastBillingDate attribute

website/src/controllers/payments/index.js

@@ -53,7 +53,10 @@ exports.createSubscription = function(data, cb) {
       paymentMethod: data.paymentMethod,
       extraMonths: +p.extraMonths
         + +(p.dateTerminated ? moment(p.dateTerminated).diff(new Date(),'months',true) : 0),
-      dateTerminated: null
+      dateTerminated: null,
+      // Specify a lastBillingDate just for Amazon Payments
+      // Resetted every time the subscription restarts
+      lastBillingDate: data.paymentMethod === 'Amazon Payments' ? new Date() : undefined
     }).defaults({ // allow non-override if a plan was previously used
       dateCreated: new Date(),
       mysteryItems: []

website/src/models/user.js

@@ -109,6 +109,7 @@ var UserSchema = new Schema({
       extraMonths: {type:Number, 'default':0},
       gemsBought: {type: Number, 'default': 0},
       mysteryItems: {type: Array, 'default': []},
+      lastBillingDate: Date, // Used only for Amazon Payments to keep track of billing date
       consecutive: {
         count: {type:Number, 'default':0},
         offset: {type:Number, 'default':0}, // when gifted subs, offset++ for each month. offset-- each new-month (cron). count doesn't ++ until offset==0