require 'remote/remote_helper'
require 'securerandom'

describe "Remote - Customer" do
  before { Chargify::Site.clear_data! }

  it "creates with duplicate protection" do
    uniqueness_token = SecureRandom.hex

    expect {
      Chargify::Customer.create(
        :uniqueness_token => uniqueness_token,
        :first_name => "John",
        :last_name => "Doe",
        :email => "john.doe@example.com",
        :reference => "johndoe")
    }.to_not raise_error

    expect {
      Chargify::Customer.create(
        :uniqueness_token => uniqueness_token,
        :first_name => "John",
        :last_name => "Doe",
        :email => "john.doe2@example.com",
        :reference => "johndoe2")
    }.to raise_error ActiveResource::ResourceConflict
  end
end

describe "Remote - ProductFamily" do
  before { Chargify::Site.clear_data! }

  it "creates with duplicate protection" do
    uniqueness_token = SecureRandom.hex

    expect {
      Chargify::ProductFamily.create(
        :name             => "Acme Projects 1",
        :uniqueness_token => uniqueness_token
      )
    }.to_not raise_error

    expect {
      Chargify::ProductFamily.create(
        :name             => "Acme Projects 2",
        :uniqueness_token => uniqueness_token
      )
    }.to raise_error ActiveResource::ResourceConflict
  end
end

describe "Remote" do
  let(:acme_projects) { Chargify::ProductFamily.create(:name => "Acme Projects") }

  let(:basic_plan) do
    Chargify::Product.create(
      :product_family_id => acme_projects.id,
      :name => "Basic Plan",
      :handle => "basic",
      :price_in_cents => 1000,
      :interval => 1,
      :interval_unit => 'month',
      :trial_interval => 1,
      :trial_interval_unit => 'month',
      :trial_price_in_cents => 0)
  end

  let(:pro_plan) do
    Chargify::Product.create(
      :product_family_id => acme_projects.id,
      :name => "Pro Plan",
      :handle => "pro",
      :price_in_cents => 5000,
      :interval => 1,
      :interval_unit => 'month')
  end

  let(:johnadoe) do
    Chargify::Customer.create(
      :first_name => "John",
      :last_name => "Doe",
      :email => "john.doe@example.com",
      :reference => "johndoe")
  end

  let(:johnadoes_credit_card) { Chargify::PaymentProfile.create(good_payment_profile_attributes.merge(:customer_id => johnadoe.id)) }

  let(:subscription_to_pro) do
    Chargify::Subscription.create(
      :product_handle => pro_plan.handle,
      :customer_reference => johnadoe.reference,
      :payment_profile_attributes => good_payment_profile_attributes
    )
  end

  before(:all) do
    # Make sure the test site data is set up correctly
    clear_site_data; acme_projects; basic_plan; pro_plan; johnadoe; johnadoes_credit_card
  end

  context "Subscription Duplicate Protection" do
    it "creates a subscription with duplicate protection" do
      uniqueness_token = SecureRandom.hex
      expect {
        Chargify::Subscription.create(
          :uniqueness_token => uniqueness_token,
          :product_handle => basic_plan.handle,
          :customer_attributes => {
            :first_name => "Jane",
            :last_name => "Doe",
            :email => "jane.doe@example.com",
            :reference => "janedoe"
          },
          :payment_profile_attributes => good_payment_profile_attributes)
      }.to_not raise_error

      expect {
        Chargify::Subscription.create(
          :uniqueness_token => uniqueness_token,
          :product_handle => basic_plan.handle,
          :customer_attributes => {
            :first_name => "Jane",
            :last_name => "Doe",
            :email => "jane.doe@example.com",
            :reference => "janedoe"
          },
          :payment_profile_attributes => good_payment_profile_attributes)
      }.to raise_error ActiveResource::ResourceConflict
    end
  end


  context "PaymentProfile" do
    it "creates with duplicate protection" do
      uniqueness_token = SecureRandom.hex

      expect {
        Chargify::PaymentProfile.create(
          good_payment_profile_attributes.merge(
            :uniqueness_token => uniqueness_token,
            :customer_id      => johnadoe.id
          )
        )
      }.to_not raise_error

      expect {
        Chargify::PaymentProfile.create(
          good_payment_profile_attributes.merge(
            :uniqueness_token => uniqueness_token,
            :customer_id      => johnadoe.id
          )
        )
      }.to raise_error ActiveResource::ResourceConflict
    end
  end

  describe "creating a new subscription to a product with a trial" do

    context "when providing valid attributes for the customer and the payment profile" do
      before(:all) do
        @subscription = Chargify::Subscription.create(
          :product_handle => basic_plan.handle,
          :customer_attributes => {
            :first_name => "Rick",
            :last_name => "James",
            :email => "rick@example.com",
            :reference => "rickjames"
          },
          :payment_profile_attributes => good_payment_profile_attributes)
      end

      it "sets the current_period_started_at attribute to now" do
        @subscription.current_period_started_at.utc.should be_within(60).of(now.utc)
      end

      it "sets the current_period_ends_at attribute to 1 month from now" do
        @subscription.current_period_ends_at.utc.should be_within(60).of(one_month_from_now.utc)
      end

      it "is in the trialing state" do
        @subscription.state.should == 'trialing'
      end
    end
  end

  describe "creating a new subscription to a product without a trial" do
    context "when providing an existing customer reference and valid payment profile attributes" do
      before(:all) do
        @subscription = Chargify::Subscription.create(
          :product_handle => pro_plan.handle,
          :customer_reference => johnadoe.reference,
          :payment_profile_attributes => good_payment_profile_attributes)
      end

      it "sets the current_period_started_at attribute to now" do
        @subscription.current_period_started_at.utc.should be_within(60).of(now.utc)
      end

      it "sets the current_period_ends_at attribute to 1 month from now" do
        @subscription.current_period_ends_at.utc.should be_within(60).of(one_month_from_now.utc)
      end

      it "is in the active state" do
        @subscription.state.should == 'active'
      end

      it "belongs to the existing customer" do
        @subscription.customer.should == johnadoe
      end
    end

    context "when providing an existing customer reference and an existing payment profile" do
      before(:all) do
        @subscription = Chargify::Subscription.create(
          :product_handle => pro_plan.handle,
          :customer_reference => johnadoe.reference,
          :payment_profile_id => johnadoes_credit_card.id.to_s)
      end

      it "is in the active state" do
        @subscription.state.should == 'active'
      end

      it "belongs to the existing customer" do
        @subscription.customer.should == johnadoe
      end

      it "uses the provided credit card" do
        expected_card = Chargify::PaymentProfile.find(johnadoes_credit_card.id)
        @subscription.payment_profile.id.should == johnadoes_credit_card.id
        @subscription.payment_profile.attributes.should == expected_card.attributes
      end
    end

    context "when providing valid attributes for the customer and attributes for a credit card that cannot be stored" do
      before(:all) do
        @subscription = Chargify::Subscription.create(
          :product_handle => basic_plan.handle,
          :customer_attributes => {
            :first_name => "Ziggy",
            :last_name => "Marley",
            :email => "ziggy@example.com",
            :reference => "ziggy"
          },
          :payment_profile_attributes => unstorable_payment_profile_attributes)
      end

      it "does not create the subscription" do
        @subscription.should_not be_valid
      end

      it "does not create the customer" do
        lambda {
          Chargify::Customer.find_by_reference("ziggy")
        }.should raise_error(ActiveResource::ResourceNotFound)
      end
    end

  end

  describe "importing a subscription to a product with a trial and a next billing date 10 days from now" do
    context "when giving valid attributes for the customer and the payment profile" do
      before(:all) do
        @subscription = Chargify::Subscription.create(
          :product_handle => basic_plan.handle,
          :customer_attributes => {
            :first_name => "John",
            :last_name => "Denver",
            :email => "john.denver@example.com",
            :reference => "johndenver"
          },
          :payment_profile_attributes => pretokenized_card_attributes,
          :next_billing_at => ten_days_from_now.utc)
        @subscription.should be_a(Chargify::Subscription)
      end

      it "sets the current_period_started_at attribute to now" do
        @subscription.current_period_started_at.utc.should be_within(60).of(now.utc)
      end

      it "sets the current_period_ends_at attribute to 1 month from now" do
        @subscription.current_period_ends_at.utc.should be_within(60).of(ten_days_from_now.utc)
      end

      it "is in the active state" do
        @subscription.state.should == 'active'
      end
    end
  end

  describe "creating failed subscriptions" do
    context "due to providing payment profile attribtues for a card that will be declined" do
      before(:all) do
        @subscription = Chargify::Subscription.create(
          :product_handle => pro_plan.handle,
          :customer_attributes => {
            :first_name => "Frank",
            :last_name => "Sinatra",
            :email => "frank.sinatra@example.com",
            :reference => "franksinatra"
          },
          :payment_profile_attributes => declined_payment_profile_attributes)
      end

      it "returns the correct error message" do
        @subscription.errors[:base].should include "Bogus Gateway: Forced failure"
      end

      it "does not create the subscription" do
        @subscription.should_not be_valid
      end

      it "does not create the customer" do
        lambda {
          Chargify::Customer.find_by_reference("franksinatra")
        }.should raise_error(ActiveResource::ResourceNotFound)
      end
    end
  end

  describe "cancelling a subscription" do
    before(:all) do
      @subscription = Chargify::Subscription.create(
        :product_handle => pro_plan.handle,
        :customer_reference => johnadoe.reference,
        :payment_profile_attributes => good_payment_profile_attributes)
    end

    it "is in the canceled state" do
      @subscription.cancel
      Chargify::Subscription.find(@subscription.id).state.should == 'canceled'
    end
  end

  describe "scheduling a subscription cancellation" do
    before(:all) do
      @subscription = Chargify::Subscription.create(
        :product_handle => pro_plan.handle,
        :customer_reference => johnadoe.reference,
        :payment_profile_attributes => good_payment_profile_attributes)
    end

    it "schedules the cancellation" do
      @subscription.delayed_cancel
      Chargify::Subscription.find(@subscription.id).cancel_at_end_of_period.should == true
    end

    it "unschedules the cancellation" do
      @subscription.delayed_cancel
      Chargify::Subscription.find(@subscription.id).cancel_at_end_of_period.should == true
      @subscription.delayed_cancel(false)
      Chargify::Subscription.find(@subscription.id).cancel_at_end_of_period.should == false
    end
  end

  describe "reactivating a subscriptions" do
    before(:all) do
      @subscription = Chargify::Subscription.create(
        :product_handle => pro_plan.handle,
        :customer_reference => johnadoe.reference,
        :payment_profile_attributes => good_payment_profile_attributes)
    end

    it "puts it in the active state" do
      @subscription.cancel
      @subscription.reload.state.should == 'canceled'
      @subscription.reactivate
      @subscription.reload.state.should == 'active'
    end
  end

  describe 'failing to reactivate a subscription' do
    before(:all) do
      @reactivated_subscription = Chargify::Subscription.create(
        :product_handle => pro_plan.handle,
        :customer_reference => johnadoe.reference,
        :payment_profile_attributes => good_payment_profile_attributes)

      @result = @reactivated_subscription.reactivate
    end

    it "is not valid after a reactivation" do
      expect(@result.errors.any?).to be_true
    end

    it 'has errors when the reactivation fails' do
      expect(@result.errors.full_messages.first).to eql 'Cannot reactivate a subscription that is not marked "Canceled", "Unpaid", or "Trial Ended".'
    end
  end

  describe "adding a one time charge" do
    before(:all) do
      @subscription = Chargify::Subscription.create(
        :product_handle => pro_plan.handle,
        :customer_reference => johnadoe.reference,
        :payment_profile_attributes => good_payment_profile_attributes)
    end

    it "creates a charge and payment" do
      lambda{
        @subscription.charge(:amount => 7, :memo => 'One Time Charge')
      }.should change{@subscription.reload.transactions.size}.by(2)
      most_recent_transaction(@subscription).amount_in_cents.should == 700
    end

    context "with duplicate protection" do
      it "creates the charge and payment and detects duplicates" do
        uniqueness_token = SecureRandom.hex

        expect {
          @subscription.charge(:amount => 5, :memo => 'One Time Charge With Duplicate Protection', :uniqueness_token => uniqueness_token)
        }.to_not raise_error

        expect {
          @subscription.charge(:amount => 5, :memo => 'One Time Charge With Duplicate Protection', :uniqueness_token => uniqueness_token)
        }.to raise_error ActiveResource::ResourceConflict
      end
    end
  end

  describe "failing to add a one time charge" do
    before(:all) do
      @subscription = Chargify::Subscription.create(
        :product_handle => basic_plan.handle,
        :customer_reference => johnadoe.reference,
        :payment_profile_attributes => declined_payment_profile_attributes)

      @charge = @subscription.charge(:amount => 7, :memo => 'One Time Charge')
    end

    it "is not valid when creating a charge fails" do
      expect(@charge).to_not be_valid
    end

    it "has errors when creating a charge fails" do
      expect(@charge.errors.full_messages.first).to eql "Bogus Gateway: Forced failure"
    end
  end

  describe "migrating a subscription to a valid product" do
    before(:all) do
      @subscription = Chargify::Subscription.create(
        :product_handle => basic_plan.handle,
        :customer_reference => johnadoe.reference,
        :payment_profile_attributes => good_payment_profile_attributes)

      @migration = @subscription.migrate(:product_handle => pro_plan.handle)
    end

    it "is valid when the migration is successful" do
      expect(@migration).to be_valid
    end

    it "migrates the product" do
      expect(@migration.subscription.product.handle).to eql "pro"
    end

    it "has a subscription" do
      expect(@migration.subscription).to_not be_nil
    end
  end

  describe "migrating a subscription to an invalid product" do
    before(:all) do
      @subscription = Chargify::Subscription.create(
        :product_handle => basic_plan.handle,
        :customer_reference => johnadoe.reference,
        :payment_profile_attributes => good_payment_profile_attributes)

      @migration = @subscription.migrate(:product_handle => "a-bad-handle")
    end

    it "is invalid when the migration is not successful" do
      expect(@migration).to_not be_valid
    end

    it "is has errors when the migration is not successful" do
      expect(@migration.errors.full_messages.first).to eql "Invalid Product"
    end

    it "will not have a subscription" do
      expect(@migration.subscription).to be_nil
    end
  end

  describe "previewing a valid migration via Chargify::Migration" do
    before(:all) do
      @subscription = Chargify::Subscription.create(
        :product_handle => basic_plan.handle,
        :customer_reference => johnadoe.reference,
        :payment_profile_attributes => good_payment_profile_attributes)
      @preview = Chargify::Migration.preview(:subscription_id => @subscription.id, :product_handle => pro_plan.handle)
    end

    it "is valid when the migration preview is successful" do
      expect(@preview).to be_valid
    end

    it "is a proper preview" do
      expect(@preview.charge_in_cents).to eql "5000"
    end
  end

  describe "previewing a valid migration via Chargify::Migration::Preview" do
    before(:all) do
      @subscription = Chargify::Subscription.create(
        :product_handle => basic_plan.handle,
        :customer_reference => johnadoe.reference,
        :payment_profile_attributes => good_payment_profile_attributes)
      @preview = Chargify::Migration::Preview.create(:subscription_id => @subscription.id, :product_handle => pro_plan.handle)
    end

    it "is valid when the migration preview is successful" do
      expect(@preview).to be_valid
    end

    it "is a proper preview" do
      expect(@preview.charge_in_cents).to eql "5000"
    end
  end

  describe "previewing an invalid migration via Chargify::Migration" do
    before(:all) do
      @subscription = Chargify::Subscription.create(
        :product_handle => basic_plan.handle,
        :customer_reference => johnadoe.reference,
        :payment_profile_attributes => good_payment_profile_attributes)

      @preview = Chargify::Migration.preview(:subscription_id => @subscription.id, :product_id => 9999999)
    end

    it "is invalid when the migration preview is invalid" do
      expect(@preview).to_not be_valid
    end

    it "has errors when the migration preview is invalid" do
      expect(@preview.errors.full_messages.first).to eql "Product must be specified"
    end
  end

  describe "previewing an invalid migration via Chargify::Migration::Preview" do
    before(:all) do
      @subscription = Chargify::Subscription.create(
        :product_handle => basic_plan.handle,
        :customer_reference => johnadoe.reference,
        :payment_profile_attributes => good_payment_profile_attributes)

      @preview = Chargify::Migration::Preview.create(:subscription_id => @subscription.id, :product_id => 9999999)
    end

    it "is invalid when the migration preview is invalid" do
      expect(@preview).to_not be_valid
    end

    it "has errors when the migration preview is invalid" do
      expect(@preview.errors.full_messages.first).to eql "Product must be specified"
    end
  end

  describe "adding an adjustment" do
    before(:all) do
      @subscription = Chargify::Subscription.create(
        :product_handle => pro_plan.handle,
        :customer_reference => johnadoe.reference,
        :payment_profile_attributes => good_payment_profile_attributes)
    end

    it "creates with duplicate protection" do
      uniqueness_token = SecureRandom.hex
      params = {
        :amount           => 2,
        :memo             => 'credit',
        :uniqueness_token => uniqueness_token
      }

      expect {
        @subscription.adjustment params
      }.to_not raise_error

      expect {
        @subscription.adjustment params
      }.to raise_error ActiveResource::ResourceConflict
    end
  end

  describe "adding a credit" do
    before(:all) do
      @subscription = Chargify::Subscription.create(
        :product_handle => pro_plan.handle,
        :customer_reference => johnadoe.reference,
        :payment_profile_attributes => good_payment_profile_attributes)
    end

    it "creates with duplicate protection" do
      uniqueness_token = SecureRandom.hex
      params = {
        :amount           => 2,
        :memo             => 'credit',
        :uniqueness_token => uniqueness_token
      }

      expect {
        @subscription.credit params
      }.to_not raise_error

      expect {
        @subscription.credit params
      }.to raise_error ActiveResource::ResourceConflict
    end

    it "creates a credit" do
      lambda{
        @subscription.credit(:amount => 7, :memo => 'credit')
      }.should change{@subscription.reload.transactions.size}.by(1)
      most_recent_transaction(@subscription).amount_in_cents.should == -700
    end

    it 'responds with errors when request is invalid' do
      response = @subscription.credit(:amount => nil)
      expect(response.errors.full_messages.first).to eql "Amount: is not a number."
    end
  end

  describe "adding a refund" do
    before(:all) do
      @subscription = Chargify::Subscription.create(
        :product_handle => pro_plan.handle,
        :customer_reference => johnadoe.reference,
        :payment_profile_attributes => good_payment_profile_attributes)
    end

    before(:each) do
      @subscription.charge(:amount => 7, :memo => 'One Time Charge')
      @subscription.reload
      @payment = most_recent_transaction(@subscription)
      @payment.transaction_type.should == 'payment'
    end

    context "via Chargify::Subscription#refund" do
      it "creates duplicate protection" do
        uniqueness_token = SecureRandom.hex
        params = {
          :payment_id       => @payment.id,
          :amount           => 2,
          :memo             => 'Refunding',
          :uniqueness_token => uniqueness_token
        }

        expect {
          @subscription.refund params
        }.to_not raise_error

        expect {
          @subscription.refund params
        }.to raise_error ActiveResource::ResourceConflict
      end

      it 'responds with an error if params are not present' do
        response = @subscription.refund(:payment_id => @payment.id)
        expect(response.errors.full_messages.first).to eql("Memo: cannot be blank.")
      end

      it "creates a refund" do
        lambda{
          @subscription.refund :payment_id => @payment.id, :amount => 7,
            :memo => 'Refunding One Time Charge'
        }.should change{@subscription.reload.transactions.size}.by(1)

        tx = most_recent_transaction(@subscription)

        tx.amount_in_cents.should == 700
        tx.transaction_type.should == 'refund'
      end
    end

    context "via Chargify::Transaction#refund" do
      it "creates with duplicate protection" do
        uniqueness_token = SecureRandom.hex
        params = {
          :amount           => 2,
          :memo             => 'Refunding One Time Charge',
          :uniqueness_token => uniqueness_token
        }

        expect {
          @payment.refund params
        }.to_not raise_error

        expect {
          @payment.refund params
        }.to raise_error ActiveResource::ResourceConflict
      end

      it "creates a refund" do
        lambda{
          @payment.refund :amount => 7, :memo => 'Refunding One Time Charge'
        }.should change{@subscription.reload.transactions.size}.by(1)
        tx = most_recent_transaction(@subscription)

        tx.amount_in_cents.should == 700
        tx.transaction_type.should == 'refund'
      end

      it "creates a full refund" do
        lambda{
          @payment.full_refund :memo => 'Refunding One Time Charge'
        }.should change{@subscription.reload.transactions.size}.by(1)
        tx = most_recent_transaction(@subscription)

        tx.amount_in_cents.should == 700
        tx.transaction_type.should == 'refund'
      end
    end

    describe 'Webhooks', pending: 'look into why this is failing' do
      before(:all) do
        @subscription = Chargify::Subscription.create(
          :product_handle => pro_plan.handle,
          :customer_reference => johnadoe.reference,
          :payment_profile_attributes => good_payment_profile_attributes)
      end

      it 'should list all webhooks' do
        Chargify::Webhook.all.should_not be_empty
      end

      # The sleep in the next 2 examples precludes the use of expect{foo}.to change{bar}
      it 'should replay specified webhooks' do
        # Note: Webhook#reload doesn't work.
        webhook = Chargify::Webhook.first
        last_sent_at = webhook.last_sent_at

        webhook.replay

        sleep 4
        Chargify::Webhook.first.last_sent_at.should_not == last_sent_at
      end

      it 'should replay webhooks specified by id' do
        webhooks = Chargify::Webhook.all
        webhook_ids = [0, 1].map {|i| webhooks[i].id}
        fetch_last_sent_times = lambda {|ary| ary.select{ |w| webhook_ids.include?(w.id) }.map(&:last_sent_at)}
        last_sent_at_times = fetch_last_sent_times.call(webhooks)
        Chargify::Webhook.replay(webhook_ids)
        sleep 4
        fetch_last_sent_times.call(Chargify::Webhook.all).should_not == last_sent_at_times
      end
    end

    describe 'Events' do
      before(:all) do
        @subscription = Chargify::Subscription.create(
          :product_handle => pro_plan.handle,
          :customer_reference => johnadoe.reference,
          :payment_profile_attributes => good_payment_profile_attributes)
      end

      it 'should list all events for the site' do
        Chargify::Event.all.to_a.should_not be_empty
      end

      it 'should lits all events for a subscription' do
        @subscription.events.to_a.should_not be_empty
      end
    end
  end

  context "metadata" do
    before { subscription_to_pro }
    let(:subscription) { Chargify::Subscription.last }

    describe 'listing metadata for a subscription' do
      it 'returns a list of metadata' do
        list = subscription.metadata
        expect(list).to eql([])
      end
    end

    describe 'creating a piece of metadata' do
      it 'can create a new metadata' do
        data = subscription.create_metadata(:name => 'favorite color', :value => 'red')

        expect(data).to be_persisted
        expect(data.name).to eql('favorite color')
        expect(data.value).to eql('red')

        list = subscription.metadata
        expect(list.size).to eql(1)
        expect(list).to include(data)
      end
    end
  end

  def clear_site_data
    begin
      Chargify::Site.clear_data!
      Chargify::Product.find(:all).count.should == 0
      Chargify::Customer.find(:all).count.should == 0
      Chargify::ProductFamily.find(:all).count.should == 0
    rescue ActiveResource::ForbiddenAccess
      raise StandardError.new("Remote specs may only be run against a site in test mode")
    end
  end

  def now
    Time.now
  end

  def one_month_from_now
    Time.now + 1.month
  end

  def ten_days_from_now
    10.days.from_now
  end

  def good_payment_profile_attributes
    {
      :full_number => '1',
      :expiration_month => '12',
      :expiration_year => Time.now.year + 1
    }
  end

  def declined_payment_profile_attributes
    {
      :full_number => '2',
      :expiration_month => '12',
      :expiration_year => Time.now.year + 1
    }
  end

  def unstorable_payment_profile_attributes
    {
      :full_number => '3',
      :expiration_month => '12',
      :expiration_year => Time.now.year + 1
    }
  end

  def expired_payment_profile_attributes
    {
      :full_number => '1',
      :expiration_month => '12',
      :expiration_year => Time.now.year - 1
    }
  end

  def pretokenized_card_attributes
    {
      :vault_token => '1',
      :current_vault => 'bogus',
      :expiration_month => '12',
      :expiration_year => Time.now.year + 1,
      :last_four => '1234',
      :card_type => 'visa'
    }
  end

  # Allows us to create remote resources once per spec hierarchy
  def create_once(type, &block)
    hierarchy = example_group_hierarchy.collect(&:object_id).to_s

    unless resource(type, hierarchy)
      register_resource(type, hierarchy, block.call)
    end
    resource(type, hierarchy)
  end

  def resource(type, hierarchy)
    @resources ||= {}
    @resources[type] ||= {}
    @resources[type][hierarchy]
  end

  def register_resource(type, hierarchy, resource)
    @resources ||= {}
    @resources[type] ||= {}
    @resources[type][hierarchy] = resource
  end

  def most_recent_transaction(scope)
    scope.transactions.sort_by(&:id).last
  end
end