#-- copyright
# OpenProject is a project management system.
# Copyright (C) 2012-2018 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 docs/COPYRIGHT.rdoc for more details.
#++

require 'spec_helper'

describe 'authorization for BCF api', type: :feature, js: true do
  let!(:user) { FactoryBot.create(:admin) }
  let(:client_secret) { app.plaintext_secret }
  let(:scope) { 'bcf_v2_1' }
  let!(:project) { FactoryBot.create(:project) }

  def oauth_path(client_id)
    "/oauth/authorize?response_type=code&client_id=#{client_id}&redirect_uri=urn:ietf:wg:oauth:2.0:oob&scope=#{scope}"
  end

  before do
    login_with user.login, 'adminADMIN!'

    visit oauth_applications_path
  end

  it 'can create and later authorize and manage an OAuth application grant and then use the access token for the bcf api' do
    # Initially empty
    expect(page).to have_selector('.generic-table--empty-row', text: 'There is currently nothing to display')

    # Create application
    find('.button', text: 'Add').click
    fill_in 'application_name', with: 'My API application'
    # Limit to bcf access
    check scope
    # Fill invalid redirect_uri
    fill_in 'application_redirect_uri', with: "not a url!"
    click_on 'Create'

    expect(page).to have_selector('.errorExplanation', text: 'Redirect URI must be an absolute URI.')
    fill_in 'application_redirect_uri', with: "urn:ietf:wg:oauth:2.0:oob\nhttps://localhost/my/callback"
    click_on 'Create'

    expect(page).to have_selector('.flash.notice', text: 'Successful creation.')

    expect(page).to have_selector('.attributes-key-value--key',
                                  text: 'Client ID')
    expect(page).to have_selector('.attributes-key-value--value',
                                  text: "urn:ietf:wg:oauth:2.0:oob\nhttps://localhost/my/callback")

    # Should print secret on initial visit
    expect(page).to have_selector('.attributes-key-value--key', text: 'Client secret')
    client_secret = page.first('.attributes-key-value--value code').text
    expect(client_secret).to match /\w+/

    app = ::Doorkeeper::Application.first

    visit oauth_path app.uid

    # We get to the authorization screen
    expect(page).to have_selector('h2', text: 'Authorize My API application')

    # With the correct scope printed
    expect(page).to have_selector('li strong', text: I18n.t('oauth.scopes.bcf_v2_1'))
    expect(page).to have_selector('li', text: I18n.t('oauth.scopes.bcf_v2_1_text'))

    # Authorize
    find('input.button[value="Authorize"]').click

    # Expect auth token
    code = find('#authorization_code').text

    # And also have a grant for this application
    user.oauth_grants.reload
    expect(user.oauth_grants.count).to eq 1
    expect(user.oauth_grants.first.application).to eq app

    parameters = {
      client_id: app.uid,
      client_secret: client_secret,
      code: code,
      grant_type: :authorization_code,
      redirect_uri: app.redirect_uri.split.first
    }

    session = ActionDispatch::Integration::Session.new(Rails.application)
    response = session.post("/oauth/token", params: parameters)
    expect(response).to eq 200
    body = JSON.parse(session.response.body)

    expect(body['access_token']).to be_present
    expect(body['refresh_token']).to be_present
    expect(body['scope']).to eq scope

    access_token = body['access_token']

    # Should show that grant in my account
    visit my_account_path
    click_on 'Access token'

    expect(page).to have_selector("#oauth-application-grant-#{app.id}", text: app.name)
    expect(page).to have_selector('td', text: app.name)

    # While being logged in, the api can be accessed with the session
    visit("/api/bcf/2.1/projects/#{project.id}")
    expect(page)
      .to have_content(JSON.dump(project_id: project.id, name: project.name))

    logout

    # While not being logged in and without a token, the api cannot be accessed
    visit("/api/bcf/2.1/projects/#{project.id}")
    expect(page)
      .to have_content(JSON.dump(message: "The requested resource could not be found."))

    ## Without the access token, access is denied
    api_session = ActionDispatch::Integration::Session.new(Rails.application)
    response = api_session.get("/api/bcf/2.1/projects/#{project.id}")
    expect(response).to eq 404

    # With the access token, access is allowed
    response = api_session.get("/api/bcf/2.1/projects/#{project.id}",
                               headers: { 'Authorization': "Bearer #{access_token}" })
    expect(response).to eq 200
    expect(api_session.response.body)
      .to be_json_eql({ project_id: project.id, name: project.name }.to_json)
  end
end