require 'spec_helper'

describe Projects::MilestonesController do
  let(:project) { create(:project) }
  let(:user)    { create(:user) }
  let(:milestone) { create(:milestone, project: project) }
  let(:issue) { create(:issue, project: project, milestone: milestone) }
  let!(:label) { create(:label, project: project, title: 'Issue Label', issues: [issue]) }
  let!(:merge_request) { create(:merge_request, source_project: project, target_project: project, milestone: milestone) }
  let(:milestone_path) { namespace_project_milestone_path }

  before do
    sign_in(user)
    project.add_maintainer(user)
    controller.instance_variable_set(:@project, project)
  end

  it_behaves_like 'milestone tabs'

  describe "#show" do
    render_views

    def view_milestone(options = {})
      params = { namespace_id: project.namespace.id, project_id: project.id, id: milestone.iid }
      get :show, params.merge(options)
    end

    it 'shows milestone page' do
      view_milestone

      expect(response).to have_gitlab_http_status(200)
      expect(response.content_type).to eq 'text/html'
    end

    it 'returns milestone json' do
      view_milestone format: :json

      expect(response).to have_http_status(404)
      expect(response.content_type).to eq 'application/json'
    end
  end

  describe "#index" do
    context "as html" do
      def render_index(project:, page:)
        get :index, namespace_id: project.namespace.id,
                    project_id: project.id,
                    page: page
      end

      it "queries only projects milestones" do
        render_index project: project, page: 1

        milestones = assigns(:milestones)

        expect(milestones.count).to eq(1)
        expect(milestones.where(project_id: nil)).to be_empty
      end

      it 'renders paginated milestones without missing or duplicates' do
        allow(Milestone).to receive(:default_per_page).and_return(2)
        create_list(:milestone, 5, project: project)

        render_index project: project, page: 1
        page_1_milestones = assigns(:milestones)
        expect(page_1_milestones.size).to eq(2)

        render_index project: project, page: 2
        page_2_milestones = assigns(:milestones)
        expect(page_2_milestones.size).to eq(2)

        render_index project: project, page: 3
        page_3_milestones = assigns(:milestones)
        expect(page_3_milestones.size).to eq(2)

        rendered_milestone_ids =
          page_1_milestones.pluck(:id) +
          page_2_milestones.pluck(:id) +
          page_3_milestones.pluck(:id)

        expect(rendered_milestone_ids)
          .to match_array(project.milestones.pluck(:id))
      end
    end

    context "as json" do
      let!(:group) { create(:group, :public) }
      let!(:group_milestone) { create(:milestone, group: group) }

      context 'with a single group ancestor' do
        before do
          project.update(namespace: group)
          get :index, namespace_id: project.namespace.id, project_id: project.id, format: :json
        end

        it "queries projects milestones and groups milestones" do
          milestones = assigns(:milestones)

          expect(milestones.count).to eq(2)
          expect(milestones).to match_array([milestone, group_milestone])
        end
      end

      context 'with nested groups', :nested_groups do
        let!(:subgroup) { create(:group, :public, parent: group) }
        let!(:subgroup_milestone) { create(:milestone, group: subgroup) }

        before do
          project.update(namespace: subgroup)
          get :index, namespace_id: project.namespace.id, project_id: project.id, format: :json
        end

        it "queries projects milestones and all ancestors milestones" do
          milestones = assigns(:milestones)

          expect(milestones.count).to eq(3)
          expect(milestones).to match_array([milestone, group_milestone, subgroup_milestone])
        end
      end
    end
  end

  describe "#destroy" do
    it "removes milestone" do
      expect(issue.milestone_id).to eq(milestone.id)

      delete :destroy, namespace_id: project.namespace.id, project_id: project.id, id: milestone.iid, format: :js
      expect(response).to be_success

      expect(Event.recent.first.action).to eq(Event::DESTROYED)

      expect { Milestone.find(milestone.id) }.to raise_exception(ActiveRecord::RecordNotFound)
      issue.reload
      expect(issue.milestone_id).to eq(nil)

      merge_request.reload
      expect(merge_request.milestone_id).to eq(nil)

      # Check system note left for milestone removal
      last_note = project.issues.find(issue.id).notes[-1].note
      expect(last_note).to eq('removed milestone')
    end
  end

  describe '#promote' do
    context 'promotion succeeds' do
      before do
        group = create(:group)
        group.add_developer(user)
        milestone.project.update(namespace: group)
      end

      it 'shows group milestone' do
        post :promote, namespace_id: project.namespace.id, project_id: project.id, id: milestone.iid

        expect(flash[:notice]).to eq("#{milestone.title} promoted to <a href=\"#{group_milestone_path(project.group, milestone.iid)}\"><u>group milestone</u></a>.")
        expect(response).to redirect_to(project_milestones_path(project))
      end

      it 'renders milestone name without parsing it as HTML' do
        milestone.update!(name: 'CCC&lt;img src=x onerror=alert(document.domain)&gt;')

        post :promote, namespace_id: project.namespace.id, project_id: project.id, id: milestone.iid

        expect(flash[:notice]).to eq("CCC promoted to <a href=\"#{group_milestone_path(project.group, milestone.iid)}\"><u>group milestone</u></a>.")
      end
    end

    context 'promotion fails' do
      it 'shows project milestone' do
        post :promote, namespace_id: project.namespace.id, project_id: project.id, id: milestone.iid

        expect(response).to redirect_to(project_milestone_path(project, milestone))
        expect(flash[:alert]).to eq('Promotion failed - Project does not belong to a group.')
      end
    end
  end
end