summaryrefslogtreecommitdiff
path: root/app/controllers/whats_new_controller.rb
blob: cba86c6584856310ab13ce8e5e2ea227b8f350be (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
# frozen_string_literal: true

class WhatsNewController < ApplicationController
  include Gitlab::Utils::StrongMemoize

  skip_before_action :authenticate_user!

  before_action :check_feature_flag
  before_action :check_valid_page_param, :set_pagination_headers, unless: -> { has_version_param? }

  feature_category :navigation

  def index
    respond_to do |format|
      format.js do
        render json: highlight_items
      end
    end
  end

  private

  def check_feature_flag
    render_404 unless Feature.enabled?(:whats_new_drawer, current_user)
  end

  def check_valid_page_param
    render_404 if current_page < 1
  end

  def current_page
    params[:page]&.to_i || 1
  end

  def highlights
    strong_memoize(:highlights) do
      if has_version_param?
        ReleaseHighlight.for_version(version: params[:version])
      else
        ReleaseHighlight.paginated(page: current_page)
      end
    end
  end

  def highlight_items
    highlights.map {|item| Gitlab::WhatsNew::ItemPresenter.present(item) }
  end

  def set_pagination_headers
    response.set_header('X-Next-Page', highlights.next_page)
  end

  def has_version_param?
    params[:version].present?
  end
end