validation of validity_per_user on coupon usage

app/assets/javascripts/directives/coupon.coffee.erb

@@ -4,6 +4,7 @@ Application.Directives.directive 'coupon', [ 'Coupon', 'growl', '_t', (Coupon, g
     scope:
       show: '='
       coupon: '='
+      userId: '@'
     templateUrl: '<%= asset_path "shared/_coupon.html" %>'
     link: ($scope, element, attributes) ->
 
@@ -27,7 +28,7 @@ Application.Directives.directive 'coupon', [ 'Coupon', 'growl', '_t', (Coupon, g
           $scope.status = 'pending'
           $scope.coupon = null
         else
-          Coupon.validate {code: $scope.couponCode}, (res) ->
+          Coupon.validate {code: $scope.couponCode, user_id: $scope.userId}, (res) ->
             $scope.status = 'valid'
             $scope.coupon = res
             growl.success(_t('the_coupon_has_been_applied_you_get_PERCENT_discount', {PERCENT: res.percent_off}))

app/assets/templates/machines/reserve.html.erb

@@ -78,7 +78,7 @@
           <div class="clear"><a class="pull-right m-b-sm text-u-l ng-scope m-r-sm" href="#" ng-click="removeMachineSlot(machineSlot, $event)" ng-if="machineSlot.isValid" translate>{{ 'remove_this_slot' }}</a></div>
         </div>
 
-        <coupon show="machineSlotsValid() && (!plansAreShown || selectedPlan)" coupon="coupon.applied" callback="setCouponCb()"></coupon>
+        <coupon show="machineSlotsValid() && (!plansAreShown || selectedPlan)" coupon="coupon.applied" user-id="{{ctrl.member.id}}"></coupon>
 
         <span ng-hide="fablabWithoutPlans">
           <div ng-if="machineSlotsValid() && !ctrl.member.subscribed_plan" ng-show="!plansAreShown">

app/assets/templates/shared/_coupon.html.erb

@@ -1,5 +1,5 @@
 <div class="form-group m-b-lg" ng-show="show">
-  <a ng-click="code. input = true" ng-hide="code.input" class="b-b" translate>{{ '  i_have_a_coupon' }}</a>
+  <a ng-click="code. input = true" ng-hide="code.input" class="b-b" translate>{{ 'i_have_a_coupon' }}</a>
 
   <div ng-show="code.input">
     <label for="coupon_code" translate>{{ 'code_' }}</label>

app/controllers/api/coupons_controller.rb

@@ -24,7 +24,13 @@ class API::CouponsController < API::ApiController
     if @coupon.nil?
       render json: {status: 'rejected'}, status: :not_found
     else
-      status = @coupon.status
+      if !current_user.is_admin?
+        _user_id = current_user.id
+      else
+        _user_id = params[:user_id]
+      end
+
+      status = @coupon.status(_user_id)
       if status != 'active'
         render json: {status: status}, status: :unprocessable_entity
       else

app/models/coupon.rb

@@ -21,18 +21,43 @@ class Coupon < ActiveRecord::Base
     end
   end
 
-  def status
+  ##
+  # Check the status of the current coupon. The coupon:
+  # - may have been disabled by an admin,
+  # - may has expired because the validity date has been reached,
+  # - may have been used the maximum number of times it was allowed
+  # - may have already been used by the provided user, if the coupon is configured to allow only one use per user,
+  # - may be available for use
+  # @param [user_id] {Number} if provided and if the current coupon's validity_per_user == 'once', check that the coupon
+  # was already used by the provided user
+  # @return {String} status identifier
+  ##
+  def status(user_id = nil)
     if not active?
       'disabled'
     elsif (!valid_until.nil?) and valid_until.at_end_of_day < DateTime.now
       'expired'
     elsif (!max_usages.nil?) and invoices.count >= max_usages
       'sold_out'
+    elsif (!user_id.nil?) and validity_per_user == 'once' and users_ids.include?(user_id.to_i)
+      'already_used'
     else
       'active'
     end
   end
 
+  def users
+    self.invoices.map do |i|
+      i.user
+    end
+  end
+
+  def users_ids
+    users.map do |u|
+      u.id
+    end
+  end
+
   def create_stripe_coupon
     StripeWorker.perform_async(:create_stripe_coupon, id)
   end

config/locales/app.shared.en.yml

@@ -358,4 +358,5 @@ en:
         unable_to_apply_the_coupon_because_disabled: "Unable to apply the coupon: this code was disabled."
         unable_to_apply_the_coupon_because_expired: "Unable to apply the coupon: this code has expired."
         unable_to_apply_the_coupon_because_sold_out: "Unable to apply the coupon: this code reached its quota."
+        unable_to_apply_the_coupon_because_already_used: "Unable to apply the coupon: you have already used this code once before."
         unable_to_apply_the_coupon_because_rejected: "This code does not exists."

config/locales/app.shared.fr.yml

@@ -358,4 +358,5 @@ fr:
         unable_to_apply_the_coupon_because_disabled: "Impossible d'appliquer la réduction : ce code promo a été désactivé."
         unable_to_apply_the_coupon_because_expired: "Impossible d'appliquer la réduction : ce code promo a expiré."
         unable_to_apply_the_coupon_because_sold_out: "Impossible d'appliquer la réduction : ce code promo a atteint son quota."
+        unable_to_apply_the_coupon_because_already_used: "Impossible d'appliquer la réduction : vous avez déjà utilisé ce code promo par le passé."
         unable_to_apply_the_coupon_because_rejected: "Ce code promo n'existe pas."