#-- copyright
# OpenProject is a project management system.
# Copyright (C) 2012-2017 the OpenProject Foundation (OPF)
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License version 3.
#
# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
# Copyright (C) 2006-2017 Jean-Philippe Lang
# Copyright (C) 2010-2013 the ChiliProject Team
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
#
# See doc/COPYRIGHT.rdoc for more details.
#++

require 'spec_helper'

describe Api::V2::AuthenticationController, type: :controller do
  before { allow(Setting).to receive(:rest_api_enabled?).and_return true }

  describe 'index.xml' do
    def fetch
      get 'index', format: 'xml'
    end

    it_should_behave_like 'a controller action with require_login'

    describe 'REST API disabled' do
      before { allow(Setting).to receive(:rest_api_enabled?).and_return false }

      context 'without login_required' do
        before { fetch }

        it { expect(response.status).to eq(403) }
      end

      context 'with login_required' do
        before do
          allow(Setting).to receive(:login_required?).and_return true

          fetch
        end

        it { expect(response.status).to eq(403) }
      end
    end

    describe 'authorization data' do
      let(:user) { FactoryGirl.create(:user) }

      before do
        login_as(user)

        fetch
      end

      subject { assigns(:authorization) }

      it { expect(subject).not_to be_nil }

      it { expect(subject.authorized).to be_truthy }

      it { expect(subject.authenticated_user_id).to eq(user.id) }
    end
  end

  describe 'session' do
    let(:api_key) { user.api_key }
    let(:user) { FactoryGirl.create(:admin) }
    let(:ttl) { 42 }

    before do
      allow(Setting).to receive(:login_required?).and_return true
      allow(Setting).to receive(:rest_api_enabled?).and_return true
      allow(Setting).to receive(:session_ttl_enabled?).and_return true
      allow(Setting).to receive(:session_ttl).and_return ttl
    end

    after do
      User.current = nil
    end

    ##
    # Sessions for API requests should never expire.
    # Actually, there shouldn't be any to begin with, but we can't change that for now.
    it 'should not expire' do
      session[:updated_at] = Time.now

      get :index, format: 'xml', params: { key: api_key }
      expect(response.status).to eq(200)

      Timecop.travel(Time.now + (ttl + 1).minutes) do
        # Now another request after a normal session would be expired
        get :index, format: 'xml', params: { key: api_key }
        expect(response.status).to eq(200)
      end
    end
  end

  describe 'WWW-Authenticate response header upon failure' do
    let(:api_key) { user.api_key }
    let(:user) { FactoryGirl.create(:admin) }
    let(:ttl) { 42 }

    before do
      allow(Setting).to receive(:login_required?).and_return true
      allow(Setting).to receive(:rest_api_enabled?).and_return true
    end

    it 'has Basic auth_scheme per default' do
      get :index, format: 'xml', params: { key: api_key.reverse }

      expect(response.status).to eq 401
      expect(response.headers['WWW-Authenticate']).to eq 'Basic realm="OpenProject API"'
    end

    context 'with Session auth scheme requested' do
      before do
        request.env['HTTP_X_AUTHENTICATION_SCHEME'] = 'Session'
      end

      it 'has Session auth scheme' do
        get :index, format: 'xml', params: { key: api_key.reverse }

        expect(response.status).to eq 401
        expect(response.headers['WWW-Authenticate']).to eq 'Session realm="OpenProject API"'
      end
    end

    context 'with another default realm' do
      before do
        allow(OpenProject::Authentication::WWWAuthenticate)
          .to receive(:default_realm).and_return 'Narnia'
      end

      it 'has another realm' do
        get :index, format: 'xml', params: { key: api_key.reverse }

        expect(response.headers['WWW-Authenticate']).to eq 'Basic realm="Narnia"'
      end
    end
  end
end