require 'spec_helper'

describe API::API, api: true  do
  include ApiHelpers

  let(:user)        { create(:user) }
  let(:user2)       { create(:user) }
  let(:non_member)  { create(:user) }
  let(:guest)       { create(:user) }
  let(:author)      { create(:author) }
  let(:assignee)    { create(:assignee) }
  let(:admin)       { create(:user, :admin) }
  let!(:project)    { create(:project, :public, creator_id: user.id, namespace: user.namespace ) }
  let!(:closed_issue) do
    create :closed_issue,
           author: user,
           assignee: user,
           project: project,
           state: :closed,
           milestone: milestone,
           created_at: generate(:issue_created_at),
           updated_at: 3.hours.ago
  end
  let!(:confidential_issue) do
    create :issue,
           :confidential,
           project: project,
           author: author,
           assignee: assignee,
           created_at: generate(:issue_created_at),
           updated_at: 2.hours.ago
  end
  let!(:issue) do
    create :issue,
           author: user,
           assignee: user,
           project: project,
           milestone: milestone,
           created_at: generate(:issue_created_at),
           updated_at: 1.hour.ago
  end
  let!(:label) do
    create(:label, title: 'label', color: '#FFAABB', project: project)
  end
  let!(:label_link) { create(:label_link, label: label, target: issue) }
  let!(:milestone) { create(:milestone, title: '1.0.0', project: project) }
  let!(:empty_milestone) do
    create(:milestone, title: '2.0.0', project: project)
  end
  let!(:note) { create(:note_on_issue, author: user, project: project, noteable: issue) }

  before do
    project.team << [user, :reporter]
    project.team << [guest, :guest]
  end

  describe "GET /issues" do
    context "when unauthenticated" do
      it "returns authentication error" do
        get api("/issues")
        expect(response).to have_http_status(401)
      end
    end

    context "when authenticated" do
      it "returns an array of issues" do
        get api("/issues", user)
        expect(response).to have_http_status(200)
        expect(json_response).to be_an Array
        expect(json_response.first['title']).to eq(issue.title)
        expect(json_response.last).to have_key('web_url')
      end

      it "adds pagination headers and keep query params" do
        get api("/issues?state=closed&per_page=3", user)
        expect(response.headers['Link']).to eq(
          '<http://www.example.com/api/v3/issues?page=1&per_page=3&private_token=%s&state=closed>; rel="first", <http://www.example.com/api/v3/issues?page=1&per_page=3&private_token=%s&state=closed>; rel="last"' % [user.private_token, user.private_token]
        )
      end

      it 'returns an array of closed issues' do
        get api('/issues?state=closed', user)
        expect(response).to have_http_status(200)
        expect(json_response).to be_an Array
        expect(json_response.length).to eq(1)
        expect(json_response.first['id']).to eq(closed_issue.id)
      end

      it 'returns an array of opened issues' do
        get api('/issues?state=opened', user)
        expect(response).to have_http_status(200)
        expect(json_response).to be_an Array
        expect(json_response.length).to eq(1)
        expect(json_response.first['id']).to eq(issue.id)
      end

      it 'returns an array of all issues' do
        get api('/issues?state=all', user)
        expect(response).to have_http_status(200)
        expect(json_response).to be_an Array
        expect(json_response.length).to eq(2)
        expect(json_response.first['id']).to eq(issue.id)
        expect(json_response.second['id']).to eq(closed_issue.id)
      end

      it 'returns an array of labeled issues' do
        get api("/issues?labels=#{label.title}", user)
        expect(response).to have_http_status(200)
        expect(json_response).to be_an Array
        expect(json_response.length).to eq(1)
        expect(json_response.first['labels']).to eq([label.title])
      end

      it 'returns an array of labeled issues when at least one label matches' do
        get api("/issues?labels=#{label.title},foo,bar", user)
        expect(response).to have_http_status(200)
        expect(json_response).to be_an Array
        expect(json_response.length).to eq(1)
        expect(json_response.first['labels']).to eq([label.title])
      end

      it 'returns an empty array if no issue matches labels' do
        get api('/issues?labels=foo,bar', user)
        expect(response).to have_http_status(200)
        expect(json_response).to be_an Array
        expect(json_response.length).to eq(0)
      end

      it 'returns an array of labeled issues matching given state' do
        get api("/issues?labels=#{label.title}&state=opened", user)
        expect(response).to have_http_status(200)
        expect(json_response).to be_an Array
        expect(json_response.length).to eq(1)
        expect(json_response.first['labels']).to eq([label.title])
        expect(json_response.first['state']).to eq('opened')
      end

      it 'returns an empty array if no issue matches labels and state filters' do
        get api("/issues?labels=#{label.title}&state=closed", user)
        expect(response).to have_http_status(200)
        expect(json_response).to be_an Array
        expect(json_response.length).to eq(0)
      end

      it 'sorts by created_at descending by default' do
        get api('/issues', user)
        response_dates = json_response.map { |issue| issue['created_at'] }

        expect(response).to have_http_status(200)
        expect(json_response).to be_an Array
        expect(response_dates).to eq(response_dates.sort.reverse)
      end

      it 'sorts ascending when requested' do
        get api('/issues?sort=asc', user)
        response_dates = json_response.map { |issue| issue['created_at'] }

        expect(response).to have_http_status(200)
        expect(json_response).to be_an Array
        expect(response_dates).to eq(response_dates.sort)
      end

      it 'sorts by updated_at descending when requested' do
        get api('/issues?order_by=updated_at', user)
        response_dates = json_response.map { |issue| issue['updated_at'] }

        expect(response).to have_http_status(200)
        expect(json_response).to be_an Array
        expect(response_dates).to eq(response_dates.sort.reverse)
      end

      it 'sorts by updated_at ascending when requested' do
        get api('/issues?order_by=updated_at&sort=asc', user)
        response_dates = json_response.map { |issue| issue['updated_at'] }

        expect(response).to have_http_status(200)
        expect(json_response).to be_an Array
        expect(response_dates).to eq(response_dates.sort)
      end
    end
  end

  describe "GET /groups/:id/issues" do
    let!(:group)            { create(:group) }
    let!(:group_project)    { create(:project, :public, creator_id: user.id, namespace: group) }
    let!(:group_closed_issue) do
      create :closed_issue,
             author: user,
             assignee: user,
             project: group_project,
             state: :closed,
             milestone: group_milestone,
             updated_at: 3.hours.ago
    end
    let!(:group_confidential_issue) do
      create :issue,
             :confidential,
             project: group_project,
             author: author,
             assignee: assignee,
             updated_at: 2.hours.ago
    end
    let!(:group_issue) do
      create :issue,
             author: user,
             assignee: user,
             project: group_project,
             milestone: group_milestone,
             updated_at: 1.hour.ago
    end
    let!(:group_label) do
      create(:label, title: 'group_lbl', color: '#FFAABB', project: group_project)
    end
    let!(:group_label_link) { create(:label_link, label: group_label, target: group_issue) }
    let!(:group_milestone) { create(:milestone, title: '3.0.0', project: group_project) }
    let!(:group_empty_milestone) do
      create(:milestone, title: '4.0.0', project: group_project)
    end
    let!(:group_note) { create(:note_on_issue, author: user, project: group_project, noteable: group_issue) }

    before do
      group_project.team << [user, :reporter]
    end
    let(:base_url) { "/groups/#{group.id}/issues" }

    it 'returns group issues without confidential issues for non project members' do
      get api(base_url, non_member)

      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(1)
      expect(json_response.first['title']).to eq(group_issue.title)
    end

    it 'returns group confidential issues for author' do
      get api(base_url, author)

      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(2)
    end

    it 'returns group confidential issues for assignee' do
      get api(base_url, assignee)

      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(2)
    end

    it 'returns group issues with confidential issues for project members' do
      get api(base_url, user)

      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(2)
    end

    it 'returns group confidential issues for admin' do
      get api(base_url, admin)

      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(2)
    end

    it 'returns an array of labeled group issues' do
      get api("#{base_url}?labels=#{group_label.title}", user)

      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(1)
      expect(json_response.first['labels']).to eq([group_label.title])
    end

    it 'returns an array of labeled group issues where all labels match' do
      get api("#{base_url}?labels=#{group_label.title},foo,bar", user)

      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(0)
    end

    it 'returns an empty array if no group issue matches labels' do
      get api("#{base_url}?labels=foo,bar", user)

      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(0)
    end

    it 'returns an empty array if no issue matches milestone' do
      get api("#{base_url}?milestone=#{group_empty_milestone.title}", user)

      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(0)
    end

    it 'returns an empty array if milestone does not exist' do
      get api("#{base_url}?milestone=foo", user)

      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(0)
    end

    it 'returns an array of issues in given milestone' do
      get api("#{base_url}?milestone=#{group_milestone.title}", user)

      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(1)
      expect(json_response.first['id']).to eq(group_issue.id)
    end

    it 'returns an array of issues matching state in milestone' do
      get api("#{base_url}?milestone=#{group_milestone.title}"\
              '&state=closed', user)

      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(1)
      expect(json_response.first['id']).to eq(group_closed_issue.id)
    end

    it 'sorts by created_at descending by default' do
      get api(base_url, user)
      response_dates = json_response.map { |issue| issue['created_at'] }

      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(response_dates).to eq(response_dates.sort.reverse)
    end

    it 'sorts ascending when requested' do
      get api("#{base_url}?sort=asc", user)
      response_dates = json_response.map { |issue| issue['created_at'] }

      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(response_dates).to eq(response_dates.sort)
    end

    it 'sorts by updated_at descending when requested' do
      get api("#{base_url}?order_by=updated_at", user)
      response_dates = json_response.map { |issue| issue['updated_at'] }

      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(response_dates).to eq(response_dates.sort.reverse)
    end

    it 'sorts by updated_at ascending when requested' do
      get api("#{base_url}?order_by=updated_at&sort=asc", user)
      response_dates = json_response.map { |issue| issue['updated_at'] }

      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(response_dates).to eq(response_dates.sort)
    end
  end

  describe "GET /projects/:id/issues" do
    let(:base_url) { "/projects/#{project.id}" }
    let(:title) { milestone.title }

    it "returns 404 on private projects for other users" do
      private_project = create(:empty_project, :private)
      create(:issue, project: private_project)

      get api("/projects/#{private_project.id}/issues", non_member)

      expect(response).to have_http_status(404)
    end

    it 'returns no issues when user has access to project but not issues' do
      restricted_project = create(:empty_project, :public, issues_access_level: ProjectFeature::PRIVATE)
      create(:issue, project: restricted_project)

      get api("/projects/#{restricted_project.id}/issues", non_member)

      expect(json_response).to eq([])
    end

    it 'returns project issues without confidential issues for non project members' do
      get api("#{base_url}/issues", non_member)
      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(2)
      expect(json_response.first['title']).to eq(issue.title)
    end

    it 'returns project issues without confidential issues for project members with guest role' do
      get api("#{base_url}/issues", guest)
      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(2)
      expect(json_response.first['title']).to eq(issue.title)
    end

    it 'returns project confidential issues for author' do
      get api("#{base_url}/issues", author)
      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(3)
      expect(json_response.first['title']).to eq(issue.title)
    end

    it 'returns project confidential issues for assignee' do
      get api("#{base_url}/issues", assignee)
      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(3)
      expect(json_response.first['title']).to eq(issue.title)
    end

    it 'returns project issues with confidential issues for project members' do
      get api("#{base_url}/issues", user)
      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(3)
      expect(json_response.first['title']).to eq(issue.title)
    end

    it 'returns project confidential issues for admin' do
      get api("#{base_url}/issues", admin)
      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(3)
      expect(json_response.first['title']).to eq(issue.title)
    end

    it 'returns an array of labeled project issues' do
      get api("#{base_url}/issues?labels=#{label.title}", user)
      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(1)
      expect(json_response.first['labels']).to eq([label.title])
    end

    it 'returns an array of labeled project issues when at least one label matches' do
      get api("#{base_url}/issues?labels=#{label.title},foo,bar", user)
      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(1)
      expect(json_response.first['labels']).to eq([label.title])
    end

    it 'returns an empty array if no project issue matches labels' do
      get api("#{base_url}/issues?labels=foo,bar", user)
      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(0)
    end

    it 'returns an empty array if no issue matches milestone' do
      get api("#{base_url}/issues?milestone=#{empty_milestone.title}", user)
      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(0)
    end

    it 'returns an empty array if milestone does not exist' do
      get api("#{base_url}/issues?milestone=foo", user)
      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(0)
    end

    it 'returns an array of issues in given milestone' do
      get api("#{base_url}/issues?milestone=#{title}", user)
      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(2)
      expect(json_response.first['id']).to eq(issue.id)
      expect(json_response.second['id']).to eq(closed_issue.id)
    end

    it 'returns an array of issues matching state in milestone' do
      get api("#{base_url}/issues?milestone=#{milestone.title}"\
              '&state=closed', user)
      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(json_response.length).to eq(1)
      expect(json_response.first['id']).to eq(closed_issue.id)
    end

    it 'sorts by created_at descending by default' do
      get api("#{base_url}/issues", user)
      response_dates = json_response.map { |issue| issue['created_at'] }

      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(response_dates).to eq(response_dates.sort.reverse)
    end

    it 'sorts ascending when requested' do
      get api("#{base_url}/issues?sort=asc", user)
      response_dates = json_response.map { |issue| issue['created_at'] }

      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(response_dates).to eq(response_dates.sort)
    end

    it 'sorts by updated_at descending when requested' do
      get api("#{base_url}/issues?order_by=updated_at", user)
      response_dates = json_response.map { |issue| issue['updated_at'] }

      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(response_dates).to eq(response_dates.sort.reverse)
    end

    it 'sorts by updated_at ascending when requested' do
      get api("#{base_url}/issues?order_by=updated_at&sort=asc", user)
      response_dates = json_response.map { |issue| issue['updated_at'] }

      expect(response).to have_http_status(200)
      expect(json_response).to be_an Array
      expect(response_dates).to eq(response_dates.sort)
    end
  end

  describe "GET /projects/:id/issues/:issue_id" do
    it 'exposes known attributes' do
      get api("/projects/#{project.id}/issues/#{issue.id}", user)

      expect(response).to have_http_status(200)
      expect(json_response['id']).to eq(issue.id)
      expect(json_response['iid']).to eq(issue.iid)
      expect(json_response['project_id']).to eq(issue.project.id)
      expect(json_response['title']).to eq(issue.title)
      expect(json_response['description']).to eq(issue.description)
      expect(json_response['state']).to eq(issue.state)
      expect(json_response['created_at']).to be_present
      expect(json_response['updated_at']).to be_present
      expect(json_response['labels']).to eq(issue.label_names)
      expect(json_response['milestone']).to be_a Hash
      expect(json_response['assignee']).to be_a Hash
      expect(json_response['author']).to be_a Hash
      expect(json_response['confidential']).to be_falsy
    end

    it "returns a project issue by id" do
      get api("/projects/#{project.id}/issues/#{issue.id}", user)

      expect(response).to have_http_status(200)
      expect(json_response['title']).to eq(issue.title)
      expect(json_response['iid']).to eq(issue.iid)
    end

    it 'returns a project issue by iid' do
      get api("/projects/#{project.id}/issues?iid=#{issue.iid}", user)
      expect(response.status).to eq 200
      expect(json_response.first['title']).to eq issue.title
      expect(json_response.first['id']).to eq issue.id
      expect(json_response.first['iid']).to eq issue.iid
    end

    it "returns 404 if issue id not found" do
      get api("/projects/#{project.id}/issues/54321", user)
      expect(response).to have_http_status(404)
    end

    context 'confidential issues' do
      it "returns 404 for non project members" do
        get api("/projects/#{project.id}/issues/#{confidential_issue.id}", non_member)
        expect(response).to have_http_status(404)
      end

      it "returns 404 for project members with guest role" do
        get api("/projects/#{project.id}/issues/#{confidential_issue.id}", guest)
        expect(response).to have_http_status(404)
      end

      it "returns confidential issue for project members" do
        get api("/projects/#{project.id}/issues/#{confidential_issue.id}", user)
        expect(response).to have_http_status(200)
        expect(json_response['title']).to eq(confidential_issue.title)
        expect(json_response['iid']).to eq(confidential_issue.iid)
      end

      it "returns confidential issue for author" do
        get api("/projects/#{project.id}/issues/#{confidential_issue.id}", author)
        expect(response).to have_http_status(200)
        expect(json_response['title']).to eq(confidential_issue.title)
        expect(json_response['iid']).to eq(confidential_issue.iid)
      end

      it "returns confidential issue for assignee" do
        get api("/projects/#{project.id}/issues/#{confidential_issue.id}", assignee)
        expect(response).to have_http_status(200)
        expect(json_response['title']).to eq(confidential_issue.title)
        expect(json_response['iid']).to eq(confidential_issue.iid)
      end

      it "returns confidential issue for admin" do
        get api("/projects/#{project.id}/issues/#{confidential_issue.id}", admin)
        expect(response).to have_http_status(200)
        expect(json_response['title']).to eq(confidential_issue.title)
        expect(json_response['iid']).to eq(confidential_issue.iid)
      end
    end
  end

  describe "POST /projects/:id/issues" do
    it 'creates a new project issue' do
      post api("/projects/#{project.id}/issues", user),
        title: 'new issue', labels: 'label, label2'

      expect(response).to have_http_status(201)
      expect(json_response['title']).to eq('new issue')
      expect(json_response['description']).to be_nil
      expect(json_response['labels']).to eq(['label', 'label2'])
      expect(json_response['confidential']).to be_falsy
    end

    it 'creates a new confidential project issue' do
      post api("/projects/#{project.id}/issues", user),
        title: 'new issue', confidential: true

      expect(response).to have_http_status(201)
      expect(json_response['title']).to eq('new issue')
      expect(json_response['confidential']).to be_truthy
    end

    it 'creates a new confidential project issue with a different param' do
      post api("/projects/#{project.id}/issues", user),
        title: 'new issue', confidential: 'y'

      expect(response).to have_http_status(201)
      expect(json_response['title']).to eq('new issue')
      expect(json_response['confidential']).to be_truthy
    end

    it 'creates a public issue when confidential param is false' do
      post api("/projects/#{project.id}/issues", user),
        title: 'new issue', confidential: false

      expect(response).to have_http_status(201)
      expect(json_response['title']).to eq('new issue')
      expect(json_response['confidential']).to be_falsy
    end

    it 'creates a public issue when confidential param is invalid' do
      post api("/projects/#{project.id}/issues", user),
        title: 'new issue', confidential: 'foo'

      expect(response).to have_http_status(201)
      expect(json_response['title']).to eq('new issue')
      expect(json_response['confidential']).to be_falsy
    end

    it "sends notifications for subscribers of newly added labels" do
      label = project.labels.first
      label.toggle_subscription(user2)

      perform_enqueued_jobs do
        post api("/projects/#{project.id}/issues", user),
          title: 'new issue', labels: label.title
      end

      should_email(user2)
    end

    it "returns a 400 bad request if title not given" do
      post api("/projects/#{project.id}/issues", user), labels: 'label, label2'
      expect(response).to have_http_status(400)
    end

    it 'allows special label names' do
      post api("/projects/#{project.id}/issues", user),
           title: 'new issue',
           labels: 'label, label?, label&foo, ?, &'
      expect(response.status).to eq(201)
      expect(json_response['labels']).to include 'label'
      expect(json_response['labels']).to include 'label?'
      expect(json_response['labels']).to include 'label&foo'
      expect(json_response['labels']).to include '?'
      expect(json_response['labels']).to include '&'
    end

    it 'returns 400 if title is too long' do
      post api("/projects/#{project.id}/issues", user),
           title: 'g' * 256
      expect(response).to have_http_status(400)
      expect(json_response['message']['title']).to eq([
        'is too long (maximum is 255 characters)'
      ])
    end

    context 'with due date' do
      it 'creates a new project issue' do
        due_date = 2.weeks.from_now.strftime('%Y-%m-%d')

        post api("/projects/#{project.id}/issues", user),
          title: 'new issue', due_date: due_date

        expect(response).to have_http_status(201)
        expect(json_response['title']).to eq('new issue')
        expect(json_response['description']).to be_nil
        expect(json_response['due_date']).to eq(due_date)
      end
    end

    context 'when an admin or owner makes the request' do
      it 'accepts the creation date to be set' do
        creation_time = 2.weeks.ago
        post api("/projects/#{project.id}/issues", user),
          title: 'new issue', labels: 'label, label2', created_at: creation_time

        expect(response).to have_http_status(201)
        expect(Time.parse(json_response['created_at'])).to be_like_time(creation_time)
      end
    end

    context 'the user can only read the issue' do
      it 'cannot create new labels' do
        expect do
          post api("/projects/#{project.id}/issues", non_member), title: 'new issue', labels: 'label, label2'
        end.not_to change { project.labels.count }
      end
    end
  end

  describe 'POST /projects/:id/issues with spam filtering' do
    before do
      allow_any_instance_of(SpamService).to receive(:check_for_spam?).and_return(true)
      allow_any_instance_of(AkismetService).to receive_messages(is_spam?: true)
    end

    let(:params) do
      {
        title: 'new issue',
        description: 'content here',
        labels: 'label, label2'
      }
    end

    it "does not create a new project issue" do
      expect { post api("/projects/#{project.id}/issues", user), params }.not_to change(Issue, :count)
      expect(response).to have_http_status(400)
      expect(json_response['message']).to eq({ "error" => "Spam detected" })

      spam_logs = SpamLog.all
      expect(spam_logs.count).to eq(1)
      expect(spam_logs[0].title).to eq('new issue')
      expect(spam_logs[0].description).to eq('content here')
      expect(spam_logs[0].user).to eq(user)
      expect(spam_logs[0].noteable_type).to eq('Issue')
    end
  end

  describe "PUT /projects/:id/issues/:issue_id to update only title" do
    it "updates a project issue" do
      put api("/projects/#{project.id}/issues/#{issue.id}", user),
        title: 'updated title'
      expect(response).to have_http_status(200)

      expect(json_response['title']).to eq('updated title')
    end

    it "returns 404 error if issue id not found" do
      put api("/projects/#{project.id}/issues/44444", user),
        title: 'updated title'
      expect(response).to have_http_status(404)
    end

    it 'allows special label names' do
      put api("/projects/#{project.id}/issues/#{issue.id}", user),
          title: 'updated title',
          labels: 'label, label?, label&foo, ?, &'

      expect(response.status).to eq(200)
      expect(json_response['labels']).to include 'label'
      expect(json_response['labels']).to include 'label?'
      expect(json_response['labels']).to include 'label&foo'
      expect(json_response['labels']).to include '?'
      expect(json_response['labels']).to include '&'
    end

    context 'confidential issues' do
      it "returns 403 for non project members" do
        put api("/projects/#{project.id}/issues/#{confidential_issue.id}", non_member),
          title: 'updated title'
        expect(response).to have_http_status(403)
      end

      it "returns 403 for project members with guest role" do
        put api("/projects/#{project.id}/issues/#{confidential_issue.id}", guest),
          title: 'updated title'
        expect(response).to have_http_status(403)
      end

      it "updates a confidential issue for project members" do
        put api("/projects/#{project.id}/issues/#{confidential_issue.id}", user),
          title: 'updated title'
        expect(response).to have_http_status(200)
        expect(json_response['title']).to eq('updated title')
      end

      it "updates a confidential issue for author" do
        put api("/projects/#{project.id}/issues/#{confidential_issue.id}", author),
          title: 'updated title'
        expect(response).to have_http_status(200)
        expect(json_response['title']).to eq('updated title')
      end

      it "updates a confidential issue for admin" do
        put api("/projects/#{project.id}/issues/#{confidential_issue.id}", admin),
          title: 'updated title'
        expect(response).to have_http_status(200)
        expect(json_response['title']).to eq('updated title')
      end

      it 'sets an issue to confidential' do
        put api("/projects/#{project.id}/issues/#{issue.id}", user),
          confidential: true

        expect(response).to have_http_status(200)
        expect(json_response['confidential']).to be_truthy
      end

      it 'makes a confidential issue public' do
        put api("/projects/#{project.id}/issues/#{confidential_issue.id}", user),
          confidential: false

        expect(response).to have_http_status(200)
        expect(json_response['confidential']).to be_falsy
      end

      it 'does not update a confidential issue with wrong confidential flag' do
        put api("/projects/#{project.id}/issues/#{confidential_issue.id}", user),
          confidential: 'foo'

        expect(response).to have_http_status(200)
        expect(json_response['confidential']).to be_truthy
      end
    end
  end

  describe 'PUT /projects/:id/issues/:issue_id to update labels' do
    let!(:label) { create(:label, title: 'dummy', project: project) }
    let!(:label_link) { create(:label_link, label: label, target: issue) }

    it 'does not update labels if not present' do
      put api("/projects/#{project.id}/issues/#{issue.id}", user),
          title: 'updated title'
      expect(response).to have_http_status(200)
      expect(json_response['labels']).to eq([label.title])
    end

    it "sends notifications for subscribers of newly added labels when issue is updated" do
      label = create(:label, title: 'foo', color: '#FFAABB', project: project)
      label.toggle_subscription(user2)

      perform_enqueued_jobs do
        put api("/projects/#{project.id}/issues/#{issue.id}", user),
          title: 'updated title', labels: label.title
      end

      should_email(user2)
    end

    it 'removes all labels' do
      put api("/projects/#{project.id}/issues/#{issue.id}", user), labels: ''

      expect(response).to have_http_status(200)
      expect(json_response['labels']).to eq([])
    end

    it 'updates labels' do
      put api("/projects/#{project.id}/issues/#{issue.id}", user),
          labels: 'foo,bar'
      expect(response).to have_http_status(200)
      expect(json_response['labels']).to include 'foo'
      expect(json_response['labels']).to include 'bar'
    end

    it 'allows special label names' do
      put api("/projects/#{project.id}/issues/#{issue.id}", user),
          labels: 'label:foo, label-bar,label_bar,label/bar,label?bar,label&bar,?,&'
      expect(response.status).to eq(200)
      expect(json_response['labels']).to include 'label:foo'
      expect(json_response['labels']).to include 'label-bar'
      expect(json_response['labels']).to include 'label_bar'
      expect(json_response['labels']).to include 'label/bar'
      expect(json_response['labels']).to include 'label?bar'
      expect(json_response['labels']).to include 'label&bar'
      expect(json_response['labels']).to include '?'
      expect(json_response['labels']).to include '&'
    end

    it 'returns 400 if title is too long' do
      put api("/projects/#{project.id}/issues/#{issue.id}", user),
          title: 'g' * 256
      expect(response).to have_http_status(400)
      expect(json_response['message']['title']).to eq([
        'is too long (maximum is 255 characters)'
      ])
    end
  end

  describe "PUT /projects/:id/issues/:issue_id to update state and label" do
    it "updates a project issue" do
      put api("/projects/#{project.id}/issues/#{issue.id}", user),
        labels: 'label2', state_event: "close"
      expect(response).to have_http_status(200)

      expect(json_response['labels']).to include 'label2'
      expect(json_response['state']).to eq "closed"
    end

    context 'when an admin or owner makes the request' do
      it 'accepts the update date to be set' do
        update_time = 2.weeks.ago
        put api("/projects/#{project.id}/issues/#{issue.id}", user),
          labels: 'label3', state_event: 'close', updated_at: update_time

        expect(response).to have_http_status(200)
        expect(json_response['labels']).to include 'label3'
        expect(Time.parse(json_response['updated_at'])).to be_like_time(update_time)
      end
    end
  end

  describe 'PUT /projects/:id/issues/:issue_id to update due date' do
    it 'creates a new project issue' do
      due_date = 2.weeks.from_now.strftime('%Y-%m-%d')

      put api("/projects/#{project.id}/issues/#{issue.id}", user), due_date: due_date

      expect(response).to have_http_status(200)
      expect(json_response['due_date']).to eq(due_date)
    end
  end

  describe "DELETE /projects/:id/issues/:issue_id" do
    it "rejects a non member from deleting an issue" do
      delete api("/projects/#{project.id}/issues/#{issue.id}", non_member)
      expect(response).to have_http_status(403)
    end

    it "rejects a developer from deleting an issue" do
      delete api("/projects/#{project.id}/issues/#{issue.id}", author)
      expect(response).to have_http_status(403)
    end

    context "when the user is project owner" do
      let(:owner)     { create(:user) }
      let(:project)   { create(:project, namespace: owner.namespace) }

      it "deletes the issue if an admin requests it" do
        delete api("/projects/#{project.id}/issues/#{issue.id}", owner)
        expect(response).to have_http_status(200)
        expect(json_response['state']).to eq 'opened'
      end
    end
  end

  describe '/projects/:id/issues/:issue_id/move' do
    let!(:target_project) { create(:project, path: 'project2', creator_id: user.id, namespace: user.namespace ) }
    let!(:target_project2) { create(:project, creator_id: non_member.id, namespace: non_member.namespace ) }

    it 'moves an issue' do
      post api("/projects/#{project.id}/issues/#{issue.id}/move", user),
               to_project_id: target_project.id

      expect(response).to have_http_status(201)
      expect(json_response['project_id']).to eq(target_project.id)
    end

    context 'when source and target projects are the same' do
      it 'returns 400 when trying to move an issue' do
        post api("/projects/#{project.id}/issues/#{issue.id}/move", user),
                 to_project_id: project.id

        expect(response).to have_http_status(400)
        expect(json_response['message']).to eq('Cannot move issue to project it originates from!')
      end
    end

    context 'when the user does not have the permission to move issues' do
      it 'returns 400 when trying to move an issue' do
        post api("/projects/#{project.id}/issues/#{issue.id}/move", user),
                 to_project_id: target_project2.id

        expect(response).to have_http_status(400)
        expect(json_response['message']).to eq('Cannot move issue due to insufficient permissions!')
      end
    end

    it 'moves the issue to another namespace if I am admin' do
      post api("/projects/#{project.id}/issues/#{issue.id}/move", admin),
               to_project_id: target_project2.id

      expect(response).to have_http_status(201)
      expect(json_response['project_id']).to eq(target_project2.id)
    end

    context 'when issue does not exist' do
      it 'returns 404 when trying to move an issue' do
        post api("/projects/#{project.id}/issues/123/move", user),
                 to_project_id: target_project.id

        expect(response).to have_http_status(404)
      end
    end

    context 'when source project does not exist' do
      it 'returns 404 when trying to move an issue' do
        post api("/projects/123/issues/#{issue.id}/move", user),
                 to_project_id: target_project.id

        expect(response).to have_http_status(404)
      end
    end

    context 'when target project does not exist' do
      it 'returns 404 when trying to move an issue' do
        post api("/projects/#{project.id}/issues/#{issue.id}/move", user),
                 to_project_id: 123

        expect(response).to have_http_status(404)
      end
    end
  end

  describe 'POST :id/issues/:issue_id/subscription' do
    it 'subscribes to an issue' do
      post api("/projects/#{project.id}/issues/#{issue.id}/subscription", user2)

      expect(response).to have_http_status(201)
      expect(json_response['subscribed']).to eq(true)
    end

    it 'returns 304 if already subscribed' do
      post api("/projects/#{project.id}/issues/#{issue.id}/subscription", user)

      expect(response).to have_http_status(304)
    end

    it 'returns 404 if the issue is not found' do
      post api("/projects/#{project.id}/issues/123/subscription", user)

      expect(response).to have_http_status(404)
    end

    it 'returns 404 if the issue is confidential' do
      post api("/projects/#{project.id}/issues/#{confidential_issue.id}/subscription", non_member)

      expect(response).to have_http_status(404)
    end
  end

  describe 'DELETE :id/issues/:issue_id/subscription' do
    it 'unsubscribes from an issue' do
      delete api("/projects/#{project.id}/issues/#{issue.id}/subscription", user)

      expect(response).to have_http_status(200)
      expect(json_response['subscribed']).to eq(false)
    end

    it 'returns 304 if not subscribed' do
      delete api("/projects/#{project.id}/issues/#{issue.id}/subscription", user2)

      expect(response).to have_http_status(304)
    end

    it 'returns 404 if the issue is not found' do
      delete api("/projects/#{project.id}/issues/123/subscription", user)

      expect(response).to have_http_status(404)
    end

    it 'returns 404 if the issue is confidential' do
      delete api("/projects/#{project.id}/issues/#{confidential_issue.id}/subscription", non_member)

      expect(response).to have_http_status(404)
    end
  end
end