3 files changed, 120 insertions, 0 deletions
diff --git a/engines/billing/app/helpers/billing_helper.rb b/engines/billing/app/helpers/billing_helper.rb
new file mode 100644
index 0000000..b9e5e2e
--- /dev/null
+++ b/engines/billing/app/helpers/billing_helper.rb
@@ -0,0 +1,51 @@
+module BillingHelper
+
+  def braintree_form_for(object, options = {}, &block)
+    options.reverse_merge! params: @result && @result.params[object],
+      errors: @result && @result.errors.for(object),
+      builder: BraintreeFormHelper::BraintreeFormBuilder,
+      url: Braintree::TransparentRedirect.url
+
+    form_for object, options, &block
+  end
+
+  def billing_top_link(user)
+    # for admins, top link will show special admin information, which has link to show their own customer information
+    if (admin? and user == current_user)
+      billing_admin_path
+    else
+      show_or_new_customer_link(user)
+    end
+  end
+
+  def show_or_new_customer_link(user)
+    # Link to show if user is admin viewing another user, or user is already a customer.
+    # Otherwise link to create a new customer.
+    if (admin? and (user != current_user)) or ((customer = Customer.find_by_user_id(user.id)) and customer.has_payment_info?)
+      show_customer_path(user)
+    else
+      new_customer_path
+    end
+  end
+
+  # a bit strange to put here, but we don't have a subscription model
+  def user_for_subscription(subscription)
+
+    if (transaction = subscription.transactions.first)
+      # much quicker, but will only work if there is already a transaction associated with subscription (should generally be)
+      braintree_customer_id = transaction.customer_details.id
+    else
+      credit_card = Braintree::CreditCard.find(subscription.payment_method_token)
+      braintree_customer_id = credit_card.customer_id
+    end
+
+    customer = Customer.find_by_braintree_customer_id(braintree_customer_id)
+    user = User.find(customer.user_id)
+
+  end
+
+  def allow_cancel_subscription(subscription)
+    ['Active', 'Pending'].include? subscription.status or (admin? and subscription.status == 'Past Due')
+  end
+
+end
diff --git a/engines/billing/app/helpers/braintree_form_helper.rb b/engines/billing/app/helpers/braintree_form_helper.rb
new file mode 100644
index 0000000..cb322fa
--- /dev/null
+++ b/engines/billing/app/helpers/braintree_form_helper.rb
@@ -0,0 +1,64 @@
+module BraintreeFormHelper
+  class BraintreeFormBuilder < ActionView::Helpers::FormBuilder
+    include ActionView::Helpers::AssetTagHelper
+    include ActionView::Helpers::TagHelper
+
+    def initialize(object_name, object, template, options, proc)
+      super
+      @braintree_params = @options[:params]
+      @braintree_errors = @options[:errors]
+      @braintree_existing = @options[:existing]
+    end
+
+    def fields_for(record_name, *args, &block)
+      options = args.extract_options!
+      options[:builder] = BraintreeFormBuilder
+      options[:params] = @braintree_params && @braintree_params[record_name]
+      options[:errors] = @braintree_errors && @braintree_errors.for(record_name)
+      new_args = args + [options]
+      super record_name, *new_args, &block
+    end
+
+    def text_field(method, options = {})
+      has_errors = @braintree_errors && @braintree_errors.on(method).any?
+      field = super(method, options.merge(:value => determine_value(method)))
+      result = content_tag("div", field, :class => has_errors ? "fieldWithErrors" : "")
+      result.safe_concat validation_errors(method)
+      result
+    end
+
+    protected
+
+    def determine_value(method)
+      if @braintree_params
+        @braintree_params[method]
+      elsif @braintree_existing
+
+        if @braintree_existing.kind_of?(Braintree::CreditCard)
+
+          case method
+          when :number
+            method = :masked_number
+          when :cvv
+            return nil
+          end
+        end
+
+        @braintree_existing.send(method)
+      else
+        nil
+      end
+    end
+
+    def validation_errors(method)
+      if @braintree_errors && @braintree_errors.on(method).any?
+        @braintree_errors.on(method).map do |error|
+          content_tag("div", ERB::Util.h(error.message), {:style => "color: red;"})
+        end.join
+      else
+        ""
+      end
+    end
+  end
+end
+
diff --git a/engines/billing/app/helpers/braintree_helper.rb b/engines/billing/app/helpers/braintree_helper.rb
new file mode 100644
index 0000000..2d18b6c
--- /dev/null
+++ b/engines/billing/app/helpers/braintree_helper.rb
@@ -0,0 +1,5 @@
+module BraintreeHelper
+
+
+end
+