PayPal Pro Payments

.env

@@ -20,10 +20,12 @@ JWT_SECRET=1c053cacaa6aa0963e211cdc7cb5b5f4bc0d99cb9b7b5aca0c1f16f104102486053e8
 STRIPE_PUBLISHABLE_KEY=pk_test_aQbfVWeOwvtES5FRSY7iIjk9
 STRIPE_SECRET_KEY=sk_test_Qk8TgJVXgeC1xJWu0tmwCW0l
 
-BRAINTREE_ENVIRONMENT=sandbox
-BRAINTREE_MERCHANT_ID=yxyphwjwxwn5yvtf
-BRAINTREE_PUBLIC_KEY=9kb7vby5mfc28gvd
-BRAINTREE_PRIVATE_KEY=87a642e593a3edf2a59b0afa1b724a00
+PAYPAL_ENVIRONMENT=sandbox
+PAYPAL_CLIENT_ID=AZcJV0afwc_FYjxmfZcT_PWmX7jIQAcMiv9Z5OwivUUzO2qzQMBPN5HTITxq_tsU1C-n1Yno6GfvAM7h
+PAYPAL_CLIENT_SECRET=EDTD7pSMst33o7_XySy5_Yv4KWfFnJmdsokhBAiQHD_1_xWzaHYA7NOSFihAw5OlVSNo6x_9Cq0HAqzY
+PAYPAL_PRO_PLAN=P-34H53708K8545322APIWLKNY
+PAYPAL_PATRON_PLAN=P-50324317G1271574TPIWMNIQ
+
 
 STREAM_API_KEY=sjm3sx9mgcx2
 STREAM_API_SECRET=uxupxkuw5ckrd2fe9qz88zne4qagwmdm9yaegbsm8xuymqja6ff8jr678636v3c4

Gemfile

@@ -88,6 +88,7 @@ gem 'stream_rails', github: 'GetStream/stream-rails',
 gem 'typhoeus' # Parallelize scraping tasks
 
 # Cash Money
+gem 'paypal-sdk-rest', '~> 1'
 gem 'stripe'
 
 # Rack Middleware

Gemfile.lock

@@ -407,6 +407,9 @@ GEM
     parallel (1.12.1)
     paranoia (2.4.1)
       activerecord (>= 4.0, < 5.3)
+    paypal-sdk-rest (1.7.3)
+      multi_json (~> 1.0)
+      xml-simple
     pg (0.21.0)
     pg_query (1.0.2)
     pghero (2.2.0)
@@ -663,6 +666,7 @@ GEM
       hashdiff
     webrobots (0.1.2)
     where-or (0.1.6)
+    xml-simple (1.1.5)
 
 PLATFORMS
   ruby
@@ -724,6 +728,7 @@ DEPENDENCIES
   paperclip-optimizer
   parallel
   paranoia (~> 2.4)
+  paypal-sdk-rest (~> 1)
   pg
   pg_query
   pghero

app/actions/pro/create_paypal_agreement.rb

@@ -0,0 +1,36 @@
+# Create a PayPal Billing Agreement to be authorized by a user and return the token which can be
+# used to authorize it on the client side.
+module Pro
+  class CreatePaypalAgreement < Action
+    include PayPal::SDK::REST
+
+    parameter :user, required: true, load: User
+    parameter :tier, required: true
+
+    validates :tier, inclusion: { in: %w[pro patron] }
+
+    def call
+      agreement = Agreement.new(
+        start_date: 30.seconds.from_now.iso8601,
+        payer: { payment_method: 'paypal' },
+        name: "Kitsu #{tier.upcase}",
+        description: "Yearly Kitsu #{tier.upcase} Subscription",
+        plan: paypal_plan
+      )
+
+      agreement.create!
+
+      { token: agreement.token }
+    end
+
+    private
+
+    def paypal_plan_id
+      ENV["PAYPAL_#{tier.upcase}_PLAN"]
+    end
+
+    def paypal_plan
+      Plan.new(id: paypal_plan_id)
+    end
+  end
+end

app/actions/pro/subscribe_with_paypal.rb

@@ -0,0 +1,28 @@
+# Execute a PayPal Billing Agreement based on a provided token, and set up the User's
+# ProSubscription to match it.
+module Pro
+  class SubscribeWithPayPal < Action
+    include PayPal::SDK::REST
+
+    parameter :user, required: true, load: User
+    parameter :tier, required: true
+    parameter :token, required: true
+
+    validates :tier, inclusion: { in: %w[pro patron] }
+
+    def call
+      user.pro_subscription&.destroy!
+
+      agreement = Agreement.new(token: token)
+      agreement.execute!
+
+      subscription = ProSubscription::PayPalSubscription.create!(
+        user: user,
+        tier: tier,
+        billing_id: agreement.id
+      )
+
+      { subscription: subscription }
+    end
+  end
+end

app/models/pro_subscription/paypal_subscription.rb

@@ -0,0 +1,19 @@
+class ProSubscription
+  class PayPalSubscription < ProSubscription
+    PayPal = PayPal::SDK::REST
+
+    def billing_service
+      :paypal
+    end
+
+    def agreement
+      @agreement ||= PayPal::Agreement.find(billing_id)
+    end
+
+    alias_method :cancel!, :destroy!
+
+    after_destroy do
+      agreement.cancel!(note: 'Cancelled on website')
+    end
+  end
+end

config/initializers/inflections.rb

@@ -8,4 +8,5 @@
   inflect.acronym 'AMA'
   inflect.acronym 'ANN'
   inflect.acronym 'MAL'
+  inflect.acronym 'PayPal'
 end

config/initializers/paypal-sdk-rest.rb

@@ -0,0 +1,8 @@
+require 'paypal-sdk-rest'
+
+PayPal::SDK.configure(
+  mode: ENV['PAYPAL_ENVIRONMENT'],
+  client_id: ENV['PAYPAL_CLIENT_ID'],
+  client_secret: ENV['PAYPAL_CLIENT_SECRET']
+)
+PayPal::SDK.logger = Rails.logger

db/migrate/20190316024235_add_state_to_pro_subscriptions.rb

@@ -0,0 +1,6 @@
+class AddStateToProSubscriptions < ActiveRecord::Migration
+  def change
+    add_column :pro_subscriptions, :state, :integer, default: 0, null: false
+    add_column :pro_subscriptions, :error, :string
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20190223050111) do
+ActiveRecord::Schema.define(version: 20190316024235) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -1327,6 +1327,8 @@
     t.datetime "updated_at",             null: false
     t.string   "type",                   null: false
     t.integer  "tier",       default: 0, null: false
+    t.integer  "state",      default: 0, null: false
+    t.string   "error"
   end
 
   add_index "pro_subscriptions", ["user_id"], name: "index_pro_subscriptions_on_user_id", using: :btree

lib/tasks/paypal-pro.rake

@@ -0,0 +1,46 @@
+namespace :paypal_pro do
+  desc 'Resave all paperclip attachments'
+  task setup: :environment do
+    [
+      {
+        name: 'PRO',
+        cost: '19.00'
+      },
+      {
+        name: 'PATRON',
+        cost: '49.00'
+      }
+    ].each do |tier|
+      PayPal::SDK.logger = Logger.new(nil)
+      plan = PayPal::SDK::REST::Plan.new(
+        name: "Kitsu #{tier[:name]}",
+        description: "Yearly subscription to Kitsu #{tier[:name]}",
+        type: 'INFINITE',
+        payment_definitions: [{
+          name: "Kitsu #{tier[:name]} Yearly",
+          type: 'REGULAR',
+          frequency_interval: '1',
+          frequency: 'YEAR',
+          amount: {
+            currency: 'USD',
+            value: tier[:cost]
+          }
+        }],
+        merchant_preferences: {
+          cancel_url: 'https://www.paypal.com/checkoutnow/error',
+          return_url: 'https://www.paypal.com/checkoutnow/error',
+          max_fail_attempts: '0',
+          auto_bill_amount: 'YES',
+          initial_fail_amount_action: 'CANCEL'
+        }
+      )
+      plan.create!
+
+      # They won't let you activate in the same request as creation
+      patch = PayPal::SDK::REST::Patch.new(op: 'replace', path: '/', value: { state: 'ACTIVE' })
+      plan.update!(patch)
+
+      puts "PAYPAL_#{tier[:name]}_PLAN=#{plan.id}"
+    end
+  end
+end

spec/actions/pro/create_paypal_agreement_spec.rb

@@ -0,0 +1,8 @@
+require 'rails_helper'
+
+RSpec.describe Pro::CreatePaypalAgreement do
+  it 'should create an agreement and return the token' do
+    response = Pro::CreatePaypalAgreement.call(user: build(:user), tier: 'pro')
+    expect(response.token).to start_with('EC-')
+  end
+end

spec/actions/pro/subscribe_with_paypal_spec.rb

@@ -0,0 +1,13 @@
+require 'rails_helper'
+
+RSpec.describe Pro::SubscribeWithPayPal do
+  it 'should execute an agreement based on a token' do
+    agreement = instance_double(PayPal::SDK::REST::Agreement)
+    expect(agreement).to receive(:execute!)
+    allow(agreement).to receive(:id).and_return('IH8PAYPAL')
+    allow(PayPal::SDK::REST::Agreement).to receive(:new).and_return(agreement)
+
+    result = Pro::SubscribeWithPayPal.call(user: build(:user), tier: 'pro', token: 'POOP')
+    expect(result.subscription.billing_id).to eq('IH8PAYPAL')
+  end
+end

spec/models/pro_subscription/paypal_subscription_spec.rb

@@ -0,0 +1,20 @@
+require 'rails_helper'
+
+RSpec.describe ProSubscription::PayPalSubscription, type: :model do
+  describe '#billing_service' do
+    it 'should return :paypal' do
+      expect(ProSubscription::PayPalSubscription.new.billing_service).to eq(:paypal)
+    end
+  end
+
+  context 'after destruction' do
+    it 'should cancel the agreement on PayPal' do
+      user = create(:user)
+      sub = ProSubscription::PayPalSubscription.create!(user: user, tier: 'pro', billing_id: 'POOP')
+      agreement = instance_double(PayPal::SDK::REST::Agreement)
+      allow(sub).to receive(:agreement).and_return(agreement)
+      expect(sub.agreement).to receive(:cancel!).once
+      sub.destroy!
+    end
+  end
+end

spec/support/webmock.rb

@@ -7,7 +7,8 @@
   'lorempixel.com',
   'localhost',
   'elasticsearch:9200',
-  'oembed.com'
+  'oembed.com',
+  'api.sandbox.paypal.com'
 ])
 
 RSpec.shared_context 'MAL CDN' do