# frozen_string_literal: true

require 'spec_helper'

RSpec.describe Registrations::ExperienceLevelsController do
  include AfterNextHelpers

  let_it_be(:namespace) { create(:group, path: 'group-path' ) }
  let_it_be(:user) { create(:user) }

  let(:params) { { namespace_path: namespace.to_param } }

  describe 'GET #show' do
    subject { get :show, params: params }

    context 'with an unauthenticated user' do
      it { is_expected.to have_gitlab_http_status(:redirect) }
      it { is_expected.to redirect_to(new_user_session_path) }
    end

    context 'with an authenticated user' do
      before do
        sign_in(user)
      end

      it { is_expected.to have_gitlab_http_status(:ok) }
      it { is_expected.to render_template('layouts/minimal') }
      it { is_expected.to render_template(:show) }
    end
  end

  describe 'PUT/PATCH #update' do
    subject { patch :update, params: params }

    context 'with an unauthenticated user' do
      it { is_expected.to have_gitlab_http_status(:redirect) }
      it { is_expected.to redirect_to(new_user_session_path) }
    end

    context 'with an authenticated user' do
      let_it_be(:project) { build(:project, namespace: namespace, creator: user, path: 'project-path') }
      let_it_be(:issues_board) { build(:board, id: 123, project: project) }

      before do
        sign_in(user)
      end

      context 'when user is successfully updated' do
        context 'when no experience_level is sent' do
          before do
            user.user_preference.update_attribute(:experience_level, :novice)
          end

          it 'will unset the user’s experience level' do
            expect { subject }.to change { user.reload.experience_level }.to(nil)
          end
        end

        context 'when an expected experience level is sent' do
          let(:params) { super().merge(experience_level: :novice) }

          it 'sets the user’s experience level' do
            expect { subject }.to change { user.reload.experience_level }.from(nil).to('novice')
          end
        end

        context 'when an unexpected experience level is sent' do
          let(:params) { super().merge(experience_level: :nonexistent) }

          it 'raises an exception' do
            expect { subject }.to raise_error(ArgumentError, "'nonexistent' is not a valid experience_level")
          end
        end

        context 'when "Learn GitLab" project exists' do
          let(:learn_gitlab_available?) { true }

          before do
            allow_next_instance_of(LearnGitlab::Project) do |learn_gitlab|
              allow(learn_gitlab).to receive(:available?).and_return(learn_gitlab_available?)
              allow(learn_gitlab).to receive(:project).and_return(project)
              allow(learn_gitlab).to receive(:board).and_return(issues_board)
              allow(learn_gitlab).to receive(:label).and_return(double(id: 1))
            end
          end

          context 'redirection' do
            context 'when namespace_path param is missing' do
              let(:params) { super().merge(namespace_path: nil) }

              where(
                learn_gitlab_available?: [true, false]
              )

              with_them do
                it { is_expected.to redirect_to('/') }
              end
            end

            context 'when we have a namespace_path param' do
              using RSpec::Parameterized::TableSyntax

              where(:learn_gitlab_available?, :path) do
                true  | '/group-path/project-path/-/boards/123'
                false | '/group-path'
              end

              with_them do
                it { is_expected.to redirect_to(path) }
              end
            end
          end

          context 'when novice' do
            let(:params) { super().merge(experience_level: :novice) }

            it 'adds a BoardLabel' do
              expect_next(Boards::UpdateService).to receive(:execute)

              subject
            end
          end

          context 'when experienced' do
            let(:params) { super().merge(experience_level: :experienced) }

            it 'does not add a BoardLabel' do
              expect(Boards::UpdateService).not_to receive(:new)

              subject
            end
          end
        end

        context 'when no "Learn GitLab" project exists' do
          let(:params) { super().merge(experience_level: :novice) }

          before do
            allow_next(LearnGitlab::Project).to receive(:available?).and_return(false)
          end

          it 'does not add a BoardLabel' do
            expect(Boards::UpdateService).not_to receive(:new)

            subject
          end
        end
      end

      context 'when user update fails' do
        before do
          allow_any_instance_of(User).to receive(:save).and_return(false)
        end

        it { is_expected.to render_template(:show) }
      end
    end
  end
end