require 'spec_helper'
require './spec/fixtures/event_webhook'

describe SendGrid::EventWebhook do
  describe '.verify_signature' do
    it 'verifies a valid signature' do
      unless skip_jruby
        expect(verify(
                 Fixtures::EventWebhook::PUBLIC_KEY,
                 Fixtures::EventWebhook::PAYLOAD,
                 Fixtures::EventWebhook::SIGNATURE,
                 Fixtures::EventWebhook::TIMESTAMP
               )).to be true
      end
    end

    it 'rejects a bad key' do
      unless skip_jruby
        expect(verify(
                 Fixtures::EventWebhook::FAILING_PUBLIC_KEY,
                 Fixtures::EventWebhook::PAYLOAD,
                 Fixtures::EventWebhook::SIGNATURE,
                 Fixtures::EventWebhook::TIMESTAMP
               )).to be false
      end
    end

    it 'rejects a bad payload' do
      unless skip_jruby
        expect(verify(
                 Fixtures::EventWebhook::PUBLIC_KEY,
                 'payload',
                 Fixtures::EventWebhook::SIGNATURE,
                 Fixtures::EventWebhook::TIMESTAMP
               )).to be false
      end
    end

    it 'rejects a bad signature' do
      unless skip_jruby
        expect(verify(
                 Fixtures::EventWebhook::PUBLIC_KEY,
                 Fixtures::EventWebhook::PAYLOAD,
                 Fixtures::EventWebhook::FAILING_SIGNATURE,
                 Fixtures::EventWebhook::TIMESTAMP
               )).to be false
      end
    end

    it 'rejects a bad timestamp' do
      unless skip_jruby
        expect(verify(
                 Fixtures::EventWebhook::PUBLIC_KEY,
                 Fixtures::EventWebhook::PAYLOAD,
                 Fixtures::EventWebhook::SIGNATURE,
                 'timestamp'
               )).to be false
      end
    end

    it 'rejects a missing signature' do
      unless skip_jruby
        expect(verify(
                 Fixtures::EventWebhook::PUBLIC_KEY,
                 Fixtures::EventWebhook::PAYLOAD,
                 nil,
                 Fixtures::EventWebhook::TIMESTAMP
               )).to be false
      end
    end

    it 'throws an error when using jruby' do
      if skip_jruby
        expect do
          verify(
            Fixtures::EventWebhook::PUBLIC_KEY,
            Fixtures::EventWebhook::PAYLOAD,
            Fixtures::EventWebhook::SIGNATURE,
            Fixtures::EventWebhook::TIMESTAMP
          )
        end.to raise_error(SendGrid::EventWebhook::NotSupportedError)
      end
    end
  end
end

describe SendGrid::EventWebhookHeader do
  it 'sets the signature header constant' do
    expect(SendGrid::EventWebhookHeader::SIGNATURE).to eq("HTTP_X_TWILIO_EMAIL_EVENT_WEBHOOK_SIGNATURE")
  end

  it 'sets the timestamp header constant' do
    expect(SendGrid::EventWebhookHeader::TIMESTAMP).to eq("HTTP_X_TWILIO_EMAIL_EVENT_WEBHOOK_TIMESTAMP")
  end
end

def verify(public_key, payload, signature, timestamp)
  ew = SendGrid::EventWebhook.new
  ec_public_key = ew.convert_public_key_to_ecdsa(public_key)
  ew.verify_signature(ec_public_key, payload, signature, timestamp)
end

def skip_jruby
  RUBY_PLATFORM == 'java'
end