require "spec_helper"

describe CandyCheck::AppStore::Verifier do
  subject { CandyCheck::AppStore::Verifier.new(config) }
  let(:config) do
    CandyCheck::AppStore::Config.new(environment: environment)
  end
  let(:environment) { :production }
  let(:data)     { "some_data"   }
  let(:secret)   { "some_secret" }
  let(:receipt)  { CandyCheck::AppStore::Receipt.new({}) }
  let(:receipt_collection) { CandyCheck::AppStore::ReceiptCollection.new({}) }
  let(:production_endpoint) do
    "https://buy.itunes.apple.com/verifyReceipt"
  end
  let(:sandbox_endpoint) do
    "https://sandbox.itunes.apple.com/verifyReceipt"
  end

  it "holds the config" do
    _(subject.config).must_be_same_as config
  end

  describe "sandbox" do
    let(:environment) { :sandbox }

    it "uses sandbox endpoint without retry on success" do
      with_mocked_verifier(receipt) do
        _(subject.verify(data, secret)).must_be_same_as receipt
        assert_recorded([sandbox_endpoint, data, secret])
      end
    end

    it "only uses sandbox endpoint for normal failures" do
      failure = get_failure(21_000)
      with_mocked_verifier(failure) do
        _(subject.verify(data, secret)).must_be_same_as failure
        assert_recorded([sandbox_endpoint, data, secret])
      end
    end

    it "retries production endpoint for redirect error" do
      failure = get_failure(21_008)
      with_mocked_verifier(failure, receipt) do
        _(subject.verify(data, secret)).must_be_same_as receipt
        assert_recorded(
          [sandbox_endpoint, data, secret],
          [production_endpoint, data, secret],
        )
      end
    end
  end

  describe "production" do
    let(:environment) { :production }

    it "uses production endpoint without retry on success" do
      with_mocked_verifier(receipt) do
        _(subject.verify(data, secret)).must_be_same_as receipt
        assert_recorded([production_endpoint, data, secret])
      end
    end

    it "only uses production endpoint for normal failures" do
      failure = get_failure(21_000)
      with_mocked_verifier(failure) do
        _(subject.verify(data, secret)).must_be_same_as failure
        assert_recorded([production_endpoint, data, secret])
      end
    end

    it "retries production endpoint for redirect error" do
      failure = get_failure(21_007)
      with_mocked_verifier(failure, receipt) do
        _(subject.verify(data, secret)).must_be_same_as receipt
        assert_recorded(
          [production_endpoint, data, secret],
          [sandbox_endpoint, data, secret],
        )
      end
    end
  end

  describe "subscription" do
    let(:environment) { :production }

    it "uses production endpoint without retry on success" do
      with_mocked_verifier(receipt_collection) do
        _(subject.verify_subscription(
            data, secret
          )).must_be_same_as receipt_collection
        assert_recorded([production_endpoint, data, secret, nil])
      end
    end

    it "only uses production endpoint for normal failures" do
      failure = get_failure(21_000)
      with_mocked_verifier(failure) do
        _(subject.verify_subscription(data, secret)).must_be_same_as failure
        assert_recorded([production_endpoint, data, secret, nil])
      end
    end

    it "retries production endpoint for redirect error" do
      failure = get_failure(21_007)
      with_mocked_verifier(failure, receipt) do
        _(subject.verify_subscription(data, secret)).must_be_same_as receipt
        assert_recorded(
          [production_endpoint, data, secret, nil],
          [sandbox_endpoint, data, secret, nil],
        )
      end
    end

    it "passed the product_ids" do
      product_ids = ["product_1"]
      with_mocked_verifier(receipt_collection) do
        _(subject.verify_subscription(
            data, secret, product_ids
          )).must_be_same_as receipt_collection
        assert_recorded([production_endpoint, data, secret, product_ids])
      end
    end
  end

  private

  let(:dummy_verification_class) do
    Struct.new(:endpoint, :data, :secret, :product_ids) do
      attr_accessor :results

      def call!
        results.shift
      end
    end
  end

  def with_mocked_verifier(*results, &block)
    @recorded ||= []
    stub = proc do |*args|
      @recorded << args
      dummy_verification_class.new(*args).tap { |v| v.results = results }
    end
    CandyCheck::AppStore::Verification.stub :new, stub, &block
  end

  def assert_recorded(*calls)
    _(@recorded).must_equal calls
  end

  def get_failure(code)
    CandyCheck::AppStore::VerificationFailure.fetch(code)
  end
end