require 'spec_helper'

describe CurrencyCloud do
  before do
    CurrencyCloud.environment = nil
    CurrencyCloud.login_id = nil
    CurrencyCloud.api_key = nil
    CurrencyCloud.reset_session
  end

  describe '#environment' do
    it 'can set the environment' do
      CurrencyCloud.environment = :development
      expect(CurrencyCloud.environment).to eq(:development)
    end
  end

  describe '#login_id' do
    it 'can set the login_id' do
      CurrencyCloud.login_id = 'development@currencycloud.com'
      expect(CurrencyCloud.login_id).to eq('development@currencycloud.com')
    end
  end

  describe '#api_key' do
    it 'can set the api_key' do
      CurrencyCloud.api_key = 'deadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef'
      expect(CurrencyCloud.api_key).to eq('deadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef')
    end
  end

  describe '#session' do
    it 'returns a session object' do
      CurrencyCloud.environment = :demonstration
      CurrencyCloud.login_id = 'development@currencycloud.com'
      CurrencyCloud.api_key = 'deadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef'

      request_handler = double('RequestHandler')
      expect(request_handler).to receive(:post).and_return('auth_token' => '123')
      expect(CurrencyCloud::RequestHandler).to receive(:new).and_return(request_handler)

      expect(CurrencyCloud.session).to be_a(CurrencyCloud::Session)
    end

    it 'raises an error if the environment is not set' do
      CurrencyCloud.environment = nil
      expect { CurrencyCloud.session }
        .to raise_error(RuntimeError)
    end

    it 'raises an error if the environment is invalid' do
      CurrencyCloud.environment = :invalid
      expect { CurrencyCloud.session }
        .to raise_error(RuntimeError)
    end

    it 'raises an error if the login_id is not set' do
      CurrencyCloud.environment = :demonstration
      expect { CurrencyCloud.session }
        .to raise_error(CurrencyCloud::GeneralError, 'login_id must be set using CurrencyCloud.login_id=')
    end

    it 'raises an error if the api_key is not set' do
      CurrencyCloud.environment = :demonstration
      CurrencyCloud.login_id = 'development@currencycloud.com'
      expect { CurrencyCloud.session }
        .to raise_error(CurrencyCloud::GeneralError, 'api_key must be set using CurrencyCloud.api_key=')
    end
  end

  describe '#on_behalf_of' do
    before do
      CurrencyCloud.environment = :demonstration
      CurrencyCloud.token = '4df5b3e5882a412f148dcd08fa4e5b73'
      CurrencyCloud.session.on_behalf_of = nil
    end

    it 'sets the value on the session, and removes it when done' do
      CurrencyCloud.on_behalf_of('c6ece846-6df1-461d-acaa-b42a6aa74045') do
        expect(CurrencyCloud.session.on_behalf_of).to eq('c6ece846-6df1-461d-acaa-b42a6aa74045')
      end
      expect(CurrencyCloud.session.on_behalf_of).to be_nil
    end

    it 'still removes the value from the session on error' do
      expect do
        CurrencyCloud.on_behalf_of('c6ece846-6df1-461d-acaa-b42a6aa74045') do
          expect(CurrencyCloud.session.on_behalf_of).to eq('c6ece846-6df1-461d-acaa-b42a6aa74045')
          raise 'Completed Expected error'
        end
      end.to raise_error('Completed Expected error')

      expect(CurrencyCloud.session.on_behalf_of).to be_nil
    end

    it 'prevents reentrant usage' do
      expect do
        CurrencyCloud.on_behalf_of('c6ece846-6df1-461d-acaa-b42a6aa74045') do
          CurrencyCloud.on_behalf_of('f57b2d33-652c-4589-a8ff-7762add2706d') do
            raise 'Should raise exception'
          end
        end
      end.to raise_error(CurrencyCloud::GeneralError, '#on_behalf_of has already been set')
    end

    it 'prevents reentrant usage' do
      expect do
        CurrencyCloud.on_behalf_of('Richard Nienaber') do
          raise 'Should raise exception'
        end
      end.to raise_error(CurrencyCloud::GeneralError, 'contact id for on behalf of is not a UUID')
    end
  end
end