# frozen_string_literal: true

require 'spec_helper'

RSpec.describe RegistrationsController do
  include TermsHelper

  before do
    stub_feature_flags(invisible_captcha: false)
  end

  describe '#new' do
    subject { get :new }

    context 'with the experimental signup flow enabled and the user is part of the experimental group' do
      before do
        stub_experiment(signup_flow: true)
        stub_experiment_for_user(signup_flow: true)
      end

      it 'renders new template and sets the resource variable' do
        expect(subject).to render_template(:new)
        expect(response).to have_gitlab_http_status(:ok)
        expect(assigns(:resource)).to be_a(User)
      end
    end

    context 'with the experimental signup flow enabled and the user is part of the control group' do
      before do
        stub_experiment(signup_flow: true)
        stub_experiment_for_user(signup_flow: false)
      end

      it 'renders new template and sets the resource variable' do
        subject
        expect(response).to have_gitlab_http_status(:found)
        expect(response).to redirect_to(new_user_session_path(anchor: 'register-pane'))
      end
    end

    context 'with sign up flow and terms_opt_in experiment being enabled' do
      before do
        stub_experiment(signup_flow: true, terms_opt_in: true)
      end

      context 'when user is not part of the experiment' do
        before do
          stub_experiment_for_user(signup_flow: true, terms_opt_in: false)
        end

        it 'tracks event with right parameters' do
          expect(Gitlab::Tracking).to receive(:event).with(
            'Growth::Acquisition::Experiment::TermsOptIn',
            'start',
            label: anything,
            property: 'control_group'
          )

          subject
        end
      end

      context 'when user is part of the experiment' do
        before do
          stub_experiment_for_user(signup_flow: true, terms_opt_in: true)
        end

        it 'tracks event with right parameters' do
          expect(Gitlab::Tracking).to receive(:event).with(
            'Growth::Acquisition::Experiment::TermsOptIn',
            'start',
            label: anything,
            property: 'experimental_group'
          )

          subject
        end
      end
    end
  end

  describe '#create' do
    let(:base_user_params) { { name: 'new_user', username: 'new_username', email: 'new@user.com', password: 'Any_password' } }
    let(:user_params) { { user: base_user_params } }

    context 'email confirmation' do
      around do |example|
        perform_enqueued_jobs do
          example.run
        end
      end

      context 'when send_user_confirmation_email is false' do
        it 'signs the user in' do
          stub_application_setting(send_user_confirmation_email: false)

          expect { post(:create, params: user_params) }.not_to change { ActionMailer::Base.deliveries.size }
          expect(subject.current_user).not_to be_nil
        end
      end

      context 'when send_user_confirmation_email is true' do
        before do
          stub_application_setting(send_user_confirmation_email: true)
        end

        context 'when soft email confirmation is not enabled' do
          before do
            stub_feature_flags(soft_email_confirmation: false)
            allow(User).to receive(:allow_unconfirmed_access_for).and_return 0
          end

          it 'does not authenticate the user and sends a confirmation email' do
            post(:create, params: user_params)

            expect(ActionMailer::Base.deliveries.last.to.first).to eq(user_params[:user][:email])
            expect(subject.current_user).to be_nil
          end
        end

        context 'when soft email confirmation is enabled' do
          before do
            stub_feature_flags(soft_email_confirmation: true)
            allow(User).to receive(:allow_unconfirmed_access_for).and_return 2.days
          end

          it 'authenticates the user and sends a confirmation email' do
            post(:create, params: user_params)

            expect(ActionMailer::Base.deliveries.last.to.first).to eq(user_params[:user][:email])
            expect(response).to redirect_to(dashboard_projects_path)
          end
        end
      end

      context 'when signup_enabled? is false' do
        it 'redirects to sign_in' do
          stub_application_setting(signup_enabled: false)

          expect { post(:create, params: user_params) }.not_to change(User, :count)
          expect(response).to redirect_to(new_user_session_path)
        end
      end
    end

    context 'when reCAPTCHA is enabled' do
      before do
        stub_application_setting(recaptcha_enabled: true)
      end

      after do
        # Avoid test ordering issue and ensure `verify_recaptcha` returns true
        unless Recaptcha.configuration.skip_verify_env.include?('test')
          Recaptcha.configuration.skip_verify_env << 'test'
        end
      end

      it 'displays an error when the reCAPTCHA is not solved' do
        allow_any_instance_of(described_class).to receive(:verify_recaptcha).and_return(false)

        post(:create, params: user_params)

        expect(response).to render_template(:new)
        expect(flash[:alert]).to eq(_('There was an error with the reCAPTCHA. Please solve the reCAPTCHA again.'))
      end

      it 'redirects to the dashboard when the reCAPTCHA is solved' do
        post(:create, params: user_params)

        expect(flash[:notice]).to eq(I18n.t('devise.registrations.signed_up'))
      end
    end

    context 'when invisible captcha is enabled' do
      before do
        stub_feature_flags(invisible_captcha: true)
        InvisibleCaptcha.timestamp_enabled = true
        InvisibleCaptcha.timestamp_threshold = treshold
      end

      after do
        InvisibleCaptcha.timestamp_enabled = false
      end

      let(:treshold) { 4 }
      let(:session_params) { { invisible_captcha_timestamp: form_rendered_time.iso8601 } }
      let(:form_rendered_time) { Time.current }
      let(:submit_time) { form_rendered_time + treshold }
      let(:auth_log_attributes) do
        {
          message: auth_log_message,
          env: :invisible_captcha_signup_bot_detected,
          remote_ip: '0.0.0.0',
          request_method: 'POST',
          path: '/users'
        }
      end

      describe 'the honeypot has not been filled and the signup form has not been submitted too quickly' do
        it 'creates an account' do
          travel_to(submit_time) do
            expect { post(:create, params: user_params, session: session_params) }.to change(User, :count).by(1)
          end
        end
      end

      describe 'honeypot spam detection' do
        let(:user_params) { super().merge(firstname: 'Roy', lastname: 'Batty') }
        let(:auth_log_message) { 'Invisible_Captcha_Honeypot_Request' }

        it 'logs the request, refuses to create an account and renders an empty body' do
          travel_to(submit_time) do
            expect(Gitlab::Metrics).to receive(:counter)
              .with(:bot_blocked_by_invisible_captcha_honeypot, 'Counter of blocked sign up attempts with filled honeypot')
              .and_call_original
            expect(Gitlab::AuthLogger).to receive(:error).with(auth_log_attributes).once
            expect { post(:create, params: user_params, session: session_params) }.not_to change(User, :count)
            expect(response).to have_gitlab_http_status(:ok)
            expect(response.body).to be_empty
          end
        end
      end

      describe 'timestamp spam detection' do
        let(:auth_log_message) { 'Invisible_Captcha_Timestamp_Request' }

        context 'the sign up form has been submitted without the invisible_captcha_timestamp parameter' do
          let(:session_params) { nil }

          it 'logs the request, refuses to create an account and displays a flash alert' do
            travel_to(submit_time) do
              expect(Gitlab::Metrics).to receive(:counter)
                .with(:bot_blocked_by_invisible_captcha_timestamp, 'Counter of blocked sign up attempts with invalid timestamp')
                .and_call_original
              expect(Gitlab::AuthLogger).to receive(:error).with(auth_log_attributes).once
              expect { post(:create, params: user_params, session: session_params) }.not_to change(User, :count)
              expect(response).to redirect_to(new_user_session_path)
              expect(flash[:alert]).to eq(I18n.t('invisible_captcha.timestamp_error_message'))
            end
          end
        end

        context 'the sign up form has been submitted too quickly' do
          let(:submit_time) { form_rendered_time }

          it 'logs the request, refuses to create an account and displays a flash alert' do
            travel_to(submit_time) do
              expect(Gitlab::Metrics).to receive(:counter)
                .with(:bot_blocked_by_invisible_captcha_timestamp, 'Counter of blocked sign up attempts with invalid timestamp')
                .and_call_original
              expect(Gitlab::AuthLogger).to receive(:error).with(auth_log_attributes).once
              expect { post(:create, params: user_params, session: session_params) }.not_to change(User, :count)
              expect(response).to redirect_to(new_user_session_path)
              expect(flash[:alert]).to eq(I18n.t('invisible_captcha.timestamp_error_message'))
            end
          end
        end
      end
    end

    context 'when terms are enforced' do
      before do
        enforce_terms
      end

      it 'redirects back with a notice when the checkbox was not checked' do
        post :create, params: user_params

        expect(flash[:alert]).to eq(_('You must accept our Terms of Service and privacy policy in order to register an account'))
      end

      it 'creates the user with agreement when terms are accepted' do
        post :create, params: user_params.merge(terms_opt_in: '1')

        expect(subject.current_user).to be_present
        expect(subject.current_user.terms_accepted?).to be(true)
      end

      context 'when experiment terms_opt_in is enabled' do
        before do
          stub_experiment(terms_opt_in: true)
        end

        context 'when user is part of the experiment' do
          before do
            stub_experiment_for_user(terms_opt_in: true)
          end

          it 'creates the user with accepted terms' do
            post :create, params: user_params

            expect(subject.current_user).to be_present
            expect(subject.current_user.terms_accepted?).to be(true)
          end
        end

        context 'when user is not part of the experiment' do
          before do
            stub_experiment_for_user(terms_opt_in: false)
          end

          it 'creates the user without accepted terms' do
            post :create, params: user_params

            expect(flash[:alert]).to eq(_('You must accept our Terms of Service and privacy policy in order to register an account'))
          end
        end
      end
    end

    describe 'tracking data' do
      context 'with sign up flow and terms_opt_in experiment being enabled' do
        subject { post :create, params: user_params }

        before do
          stub_experiment(signup_flow: true, terms_opt_in: true)
        end

        context 'when user is not part of the experiment' do
          before do
            stub_experiment_for_user(signup_flow: true, terms_opt_in: false)
          end

          it 'tracks event with right parameters' do
            expect(Gitlab::Tracking).to receive(:event).with(
              'Growth::Acquisition::Experiment::TermsOptIn',
              'end',
              label: anything,
              property: 'control_group'
            )

            subject
          end
        end

        context 'when user is part of the experiment' do
          before do
            stub_experiment_for_user(signup_flow: true, terms_opt_in: true)
          end

          it 'tracks event with right parameters' do
            expect(Gitlab::Tracking).to receive(:event).with(
              'Growth::Acquisition::Experiment::TermsOptIn',
              'end',
              label: anything,
              property: 'experimental_group'
            )

            subject
          end
        end
      end
    end

    it "logs a 'User Created' message" do
      expect(Gitlab::AppLogger).to receive(:info).with(/\AUser Created: username=new_username email=new@user.com.+\z/).and_call_original

      post(:create, params: user_params)
    end

    it 'handles when params are new_user' do
      post(:create, params: { new_user: base_user_params })

      expect(subject.current_user).not_to be_nil
    end

    context 'with the experimental signup flow enabled and the user is part of the experimental group' do
      before do
        stub_experiment(signup_flow: true)
        stub_experiment_for_user(signup_flow: true)
      end

      let(:base_user_params) { { first_name: 'First', last_name: 'Last', username: 'new_username', email: 'new@user.com', password: 'Any_password' } }

      it 'sets name from first and last name' do
        post :create, params: { new_user: base_user_params }

        expect(User.last.first_name).to eq(base_user_params[:first_name])
        expect(User.last.last_name).to eq(base_user_params[:last_name])
        expect(User.last.name).to eq("#{base_user_params[:first_name]} #{base_user_params[:last_name]}")
      end
    end
  end

  describe '#destroy' do
    let(:user) { create(:user) }

    before do
      sign_in(user)
    end

    def expect_failure(message)
      expect(flash[:alert]).to eq(message)
      expect(response).to have_gitlab_http_status(:see_other)
      expect(response).to redirect_to profile_account_path
    end

    def expect_password_failure
      expect_failure(s_('Profiles|Invalid password'))
    end

    def expect_username_failure
      expect_failure(s_('Profiles|Invalid username'))
    end

    def expect_success
      expect(flash[:notice]).to eq s_('Profiles|Account scheduled for removal.')
      expect(response).to have_gitlab_http_status(:see_other)
      expect(response).to redirect_to new_user_session_path
    end

    context 'user requires password confirmation' do
      it 'fails if password confirmation is not provided' do
        post :destroy

        expect_password_failure
      end

      it 'fails if password confirmation is wrong' do
        post :destroy, params: { password: 'wrong password' }

        expect_password_failure
      end

      it 'succeeds if password is confirmed' do
        post :destroy, params: { password: '12345678' }

        expect_success
      end
    end

    context 'user does not require password confirmation' do
      before do
        stub_application_setting(password_authentication_enabled_for_web: false)
        stub_application_setting(password_authentication_enabled_for_git: false)
      end

      it 'fails if username confirmation is not provided' do
        post :destroy

        expect_username_failure
      end

      it 'fails if username confirmation is wrong' do
        post :destroy, params: { username: 'wrong username' }

        expect_username_failure
      end

      it 'succeeds if username is confirmed' do
        post :destroy, params: { username: user.username }

        expect_success
      end
    end
  end

  describe '#welcome' do
    subject { get :welcome }

    context 'signup_flow experiment enabled' do
      before do
        stub_experiment_for_user(signup_flow: true)
      end

      it 'renders the devise_experimental_separate_sign_up_flow layout' do
        sign_in(create(:user))

        expected_layout = Gitlab.ee? ? :checkout : :devise_experimental_separate_sign_up_flow

        expect(subject).to render_template(expected_layout)
      end

      context '2FA is required from group' do
        before do
          user = create(:user, require_two_factor_authentication_from_group: true)
          sign_in(user)
        end

        it 'does not perform a redirect' do
          expect(subject).not_to redirect_to(profile_two_factor_auth_path)
        end
      end
    end

    context 'signup_flow experiment disabled' do
      before do
        sign_in(create(:user))
        stub_experiment_for_user(signup_flow: false)
      end

      it 'renders the devise layout' do
        expected_layout = Gitlab.ee? ? :checkout : :devise

        expect(subject).to render_template(expected_layout)
      end
    end
  end
end