End to end transaction

app/assets/javascripts/spree/frontend/solidus_paypal_braintree.js

@@ -1,2 +1,107 @@
 // Placeholder manifest file.
-// the installer will append this file to the app vendored assets here: vendor/assets/javascripts/spree/frontend/all.js'
+// the installer will append this file to the app vendored assets here: vendor/assets/javascripts/spree/frontend/all.js'
+
+window.SolidusPaypalBraintree = {
+  APPLE_PAY_API_VERSION: 1,
+
+  initialize: function(authToken, clientReadyCallback) {
+    braintree.client.create({
+      authorization: authToken
+    }, function (clientErr, clientInstance) {
+      if (clientErr) {
+        console.error('Error creating client:', clientErr);
+        return;
+      }
+      clientReadyCallback(clientInstance);
+    });
+  },
+
+  setupApplePay: function(braintreeClient, merchantId, readyCallback) {
+    if(window.ApplePaySession) {
+      var promise = ApplePaySession.canMakePaymentsWithActiveCard(merchantId);
+      promise.then(function (canMakePayments) {
+        if (canMakePayments) {
+          braintree.applePay.create({
+            client: braintreeClient
+          }, function (applePayErr, applePayInstance) {
+            if (applePayErr) {
+              console.error("Error creating ApplePay:", applePayErr);
+              return;
+            }
+            readyCallback(applePayInstance);
+          });
+        }
+      });
+    };
+  },
+
+  initializeApplePaySession: function(applePayInstance, storeName, paymentRequest, sessionCallback) {
+
+    paymentRequest['requiredShippingContactFields'] = ['postalAddress', 'phone', 'email']
+    var paymentRequest = applePayInstance.createPaymentRequest(paymentRequest);
+
+    var session = new ApplePaySession(SolidusPaypalBraintree.APPLE_PAY_API_VERSION, paymentRequest);
+    session.onvalidatemerchant = function (event) {
+      applePayInstance.performValidation({
+        validationURL: event.validationURL,
+        displayName: storeName,
+      }, function (validationErr, merchantSession) {
+        if (validationErr) {
+          console.error('Error validating Apple Pay:', validationErr);
+          session.abort();
+          return;
+        };
+        session.completeMerchantValidation(merchantSession);
+      });
+    };
+
+    session.onpaymentauthorized = function (event) {
+      applePayInstance.tokenize({
+        token: event.payment.token
+      }, function (tokenizeErr, payload) {
+        if (tokenizeErr) {
+          console.error('Error tokenizing Apple Pay:', tokenizeErr);
+          session.completePayment(ApplePaySession.STATUS_FAILURE);
+        }
+        session.completePayment(ApplePaySession.STATUS_SUCCESS);
+
+        SolidusPaypalBraintree.setBraintreeApplePayContact(event.payment.shippingContact);
+        SolidusPaypalBraintree.submitBraintreePayload(payload);
+      });
+    };
+
+    sessionCallback(session);
+
+    session.begin();
+  },
+
+  setBraintreeApplePayContact: function(appleContact) {
+    var apple_map = {
+      locality: 'city',
+      countryCode: 'country_code',
+      familyName: 'last_name',
+      givenName: 'first_name',
+      postalCode: 'zip',
+      administrativeArea: 'state_code',
+    }
+    for (var key in apple_map) {
+      document.querySelector("#transaction_address_attributes_" + apple_map[key]).value = appleContact[key];
+    }
+
+    window.addressCon = appleContact;
+    document.querySelector("#transaction_address_attributes_address_line_1").value = appleContact.addressLines[0];
+
+    if(appleContact.addressLines.length > 1) {
+      document.querySelector("#transaction_address_attributes_address_line_2").value = appleContact.addressLines[1];
+    }
+
+    document.querySelector("#transaction_phone").value = appleContact.phoneNumber;
+    document.querySelector("#transaction_email").value = appleContact.emailAddress;
+  },
+
+  submitBraintreePayload: function(payload) {
+    document.querySelector("#transaction_nonce").value = payload.nonce;
+    document.querySelector("#transaction_payment_type").value = payload.type;
+    document.querySelector('#new_transaction').submit();
+  }
+}

app/controllers/solidus_paypal_braintree/transactions_controller.rb

@@ -0,0 +1,41 @@
+class SolidusPaypalBraintree::TransactionsController < Spree::StoreController
+  PERMITTED_BRAINTREE_TRANSACTION_PARAMS = [
+    :nonce,
+    :payment_type,
+    :phone,
+    :email,
+    address_attributes: [
+      :country_code, :last_name, :first_name,
+      :city, :zip, :state_code, :address_line_1, :address_line_2
+    ]
+  ]
+
+  def create
+    transaction = SolidusPaypalBraintree::Transaction.new transaction_params
+
+    if transaction.valid?
+      import = SolidusPaypalBraintree::TransactionImport.new(current_order, transaction)
+      import.import!
+
+      if import.order.complete?
+        return redirect_to spree.order_path(import.order)
+      else
+        return redirect_to spree.checkout_state_path(import.order.state)
+      end
+    else
+      render text: transaction.errors
+    end
+  end
+
+  private
+
+  def transaction_params
+    params.require(:transaction)
+      .permit(PERMITTED_BRAINTREE_TRANSACTION_PARAMS)
+      .merge({ payment_method: payment_method })
+  end
+
+  def payment_method
+    SolidusPaypalBraintree::Gateway.find(params[:payment_method_id])
+  end
+end

app/models/solidus_paypal_braintree/transaction.rb

@@ -0,0 +1,26 @@
+require 'active_model'
+require 'solidus_paypal_braintree/transaction_address'
+
+module SolidusPaypalBraintree
+  class Transaction
+    include ActiveModel::Model
+
+    attr_accessor :nonce, :payment_method, :payment_type, :address, :email, :phone
+
+    validates :nonce, presence: true
+    validates :payment_method, presence: true
+    validates :payment_type, presence: true
+    validates :phone, presence: true
+    validates :email, presence: true
+
+    validate do
+      unless payment_method.is_a? SolidusPaypalBraintree::Gateway
+        errors.add(:payment_method, 'Must be braintree')
+      end
+    end
+
+    def address_attributes=(attributes)
+      self.address = TransactionAddress.new attributes
+    end
+  end
+end

app/models/solidus_paypal_braintree/transaction_address.rb

@@ -0,0 +1,10 @@
+require 'active_model'
+
+module SolidusPaypalBraintree
+  class TransactionAddress
+    include ActiveModel::Model
+
+    attr_accessor :country_code, :last_name, :first_name,
+      :city, :zip, :state_code, :address_line_1, :address_line_2
+  end
+end

app/models/solidus_paypal_braintree/transaction_import.rb

@@ -0,0 +1,63 @@
+require 'active_model'
+
+module SolidusPaypalBraintree
+  class TransactionImport
+    attr_reader :transaction, :order
+
+    def initialize(order, transaction)
+      @order = order
+      @transaction = transaction
+    end
+
+    def source
+      SolidusPaypalBraintree::Source.new nonce: transaction.nonce,
+        payment_type: transaction.payment_type,
+        user: user
+    end
+
+    def user
+      order.user
+    end
+
+    def import!
+      order.email = user.try!(:email) || transaction.email
+
+      if address
+        order.shipping_address = order.billing_address = address
+        # work around a bug in most solidus versions
+        # about tax zone cachine between address changes
+        order.instance_variable_set("@tax_zone", nil)
+        order.next
+      end
+
+      order.payments.new source: source,
+        payment_method: transaction.payment_method,
+        amount: order.total
+
+      order.save!
+
+      advance_order
+    end
+
+    def address
+      transaction.address.try do |ta|
+        country = Spree::Country.find_by(iso: ta.country_code.upcase)
+        Spree::Address.new first_name: ta.first_name,
+          last_name: ta.last_name,
+          city: ta.city,
+          country: country,
+          state_name: ta.state_code,
+          address1: ta.address_line_1,
+          address2: ta.address_line_2,
+          zipcode: ta.zip,
+          phone: transaction.phone
+      end
+    end
+
+    protected
+
+    def advance_order
+      order.next! until order.state == "confirm"
+    end
+  end
+end

app/views/solidus_paypal_braintree/_transaction_form.html.erb

@@ -0,0 +1,16 @@
+<%= form_for [main_app, SolidusPaypalBraintree::Transaction.new], id: 'braintree_complete_form', as: :transaction do |f| %>
+  <%= f.hidden_field :nonce %>
+  <%= f.hidden_field :payment_type %>
+  <%= hidden_field_tag :payment_method_id, payment_method.id %>
+  <%= f.hidden_field :phone %>
+  <%= f.hidden_field :email %>
+
+  <%= f.fields_for :address, SolidusPaypalBraintree::TransactionAddress.new do |fa| %>
+    <% [:country_code, :last_name, :first_name,
+        :city, :zip, :state_code,
+        :address_line_1, :address_line_2].each do |address_field| %>
+      <%= fa.hidden_field address_field %>
+    <% end %>
+  <% end %>
+
+<% end %>

config/routes.rb

@@ -1,5 +1,7 @@
 Rails.application.routes.draw do
   namespace :solidus_paypal_braintree do
     resource :checkout, only: [:update, :edit]
+
+    resource :transactions, only: [:create]
   end
 end

lib/solidus_paypal_braintree/engine.rb

@@ -19,6 +19,8 @@ def self.activate
       end
     end
 
+    config.assets.precompile += ['spree/frontend/solidus_paypal_braintree']
+
     config.to_prepare(&method(:activate).to_proc)
   end
 end