require 'test_helper'

class RevisionsControllerTest < ActionController::TestCase

  def setup
    Node.root.descendants.destroy_all
    @user = User.find_by_login("aaron")
    @node = Node.root.children.create!( :slug => "version_me" )

    draft = @node.draft
    draft.body = "first"
    @node.publish_draft!
    find_or_create_draft(@node, @user)
    draft = @node.draft
    draft.update(:body => "second")
    @node.publish_draft!
  end

  test "setup" do
    assert_equal 2, Node.count
    assert_equal 2, @node.pages.count
    assert_equal ["first", "second"], @node.pages.map {|p| p.body}
  end

  test "get list of revisions for a given node" do
    login_as :quentin
    get :index, params: { :node_id => @node.id }
    assert_response :success
    assert_select "tbody tr[data-revision]", 2
  end

   test "showing one revision" do
    login_as :quentin
    get :show, params: { :node_id => @node.id, :id => @node.pages.last.id }
    assert_response :success
    assert_select ".layout_row_label", Page.human_attribute_name(:body)
    assert_select ".layout_row_content", {:count => 1, :text => "second"}
  end

  test "showing a revision renders real markup in the body, not escaped entities" do
    login_as :quentin
    node = Node.root.children.create!(:slug => "show_markup_test")
    draft = node.draft
    draft.body = "<h3>Hello</h3>"
    node.publish_draft!

    get :show, params: { :node_id => node.id, :id => node.head.id }
    assert_response :success
    assert_select ".layout_row_content h3", "Hello"
  end

  test "diffing two revisions" do
    login_as :quentin
    post(
      :diff, params: {
        :node_id => @node.id,
        :start_revision => @node.pages.first.revision,
        :end_revision => @node.pages.last.revision
      }
    )
    assert_response :success
  end

  test "restoring a revision" do
    assert_equal "second", @node.head.body

    login_as :aaron
    put( :restore, params: { :node_id => @node.id, :id => @node.pages.first.id } )

    @node.reload
    assert_equal @node.head, @node.pages.first
    assert_equal "first", @node.head.reload.body
  end

  test "diffing two revisions renders real markup with only the changed words marked" do
    login_as :quentin
    post(
      :diff, params: {
        :node_id => @node.id,
        :start_revision => @node.pages.first.revision,
        :end_revision => @node.pages.last.revision
      }
    )
    assert_response :success
    assert_select "del", "first"
    assert_select "ins", "second"
    assert_no_match /&lt;/, response.body
  end

  test "diffing two revisions in side by side view renders two columns" do
    login_as :quentin
    post(
      :diff, params: {
        :node_id => @node.id,
        :start_revision => @node.pages.first.revision,
        :end_revision => @node.pages.last.revision,
        :view => "side_by_side"
      }
    )
    assert_response :success
    assert_select ".diff_column", 2
  end

  test "diffing head against draft by name" do
    login_as :quentin
    find_or_create_draft(@node, @user)
    @node.draft.update(:body => "draft body")

    post(:diff, params: { :node_id => @node.id, :start_revision => "head", :end_revision => "draft" })
    assert_response :success
  end

  test "diffing a layer pair that no longer exists redirects with a flash" do
    login_as :quentin
    post(:diff, params: { :node_id => @node.id, :start_revision => "draft", :end_revision => "autosave" })
    assert_redirected_to node_path(@node)
    assert flash[:error].present?
  end

  test "diffing by name shows a clear comparison label instead of a misleading revision picker" do
    login_as :quentin
    find_or_create_draft(@node, @user)

    post(:diff, params: { :node_id => @node.id, :start_revision => "head", :end_revision => "draft" })
    assert_response :success
    assert_select "strong", "Head"
    assert_select "strong", "Draft"
    assert_select "select[name=?]", "start_revision", :count => 0
  end

  test "pair-switcher buttons carry their params as real hidden fields, not a query string" do
    login_as :quentin
    find_or_create_draft(@node, @user)
    @node.lock_for_editing!(@user)
    @node.autosave!({ :body => "unsaved" }, @user)

    post(:diff, params: { :node_id => @node.id, :start_revision => "head", :end_revision => "draft" })
    assert_response :success
    assert_select "form.computation input[type=hidden][name=start_revision]"
    assert_select "form.computation input[type=hidden][name=end_revision]"
  end

  test "the view toggle is available even when comparing named layers" do
    login_as :quentin
    find_or_create_draft(@node, @user)

    post(:diff, params: { :node_id => @node.id, :start_revision => "head", :end_revision => "draft" })
    assert_response :success
    assert_select "select[name='view'] option", :text => I18n.t("revisions.side_by_side")
    assert_select "input[type='hidden'][name='start_revision'][value='head']"
    assert_select "input[type='hidden'][name='end_revision'][value='draft']"
  end

  test "diffing shows tag, template, external URL and asset changes" do
    login_as :quentin
    find_or_create_draft(@node, @user)
    draft = @node.draft
    draft.tag_list      = "update"
    draft.template_name = "title_only"
    draft.external_url  = "https://example.org/"
    draft.save!
    draft.related_assets.create!(:asset => Asset.create!(:name => "diffed",
                                  :upload_file_name => "diffed.png",
                                  :upload_content_type => "image/png"))

    post(:diff, params: { :node_id => @node.id, :start_revision => @node.pages.first.revision, :end_revision => @node.pages.last.revision })
    assert_response :success
    assert_select "h3", Page.human_attribute_name(:tag_list)
    assert_select "h3", Page.human_attribute_name(:template_name)
    assert_select "h3", Page.human_attribute_name(:external_url)
    assert_select "h3", Page.human_attribute_name(:assets)
  end

  test "a diff with no metadata changes says so once" do
    login_as :quentin

    post(:diff, params: { :node_id => @node.id, :start_revision => @node.pages.first.revision, :end_revision => @node.pages.last.revision })
    assert_response :success
    assert_select ".diff_meta .diff_unchanged"
    assert_select ".diff_meta h3", false
  end

  test "revisions#index links back to the node" do
    login_as :quentin
    get :index, params: { :node_id => @node.id }
    assert_response :success
    assert_select "a[href=?]", node_path(@node)
  end

  test "diff defaults to a locale that actually changed, not the ambient default" do
    login_as :quentin
    node = Node.root.children.create!(:slug => "diff_default_locale_test")
    node.draft.save!
    node.publish_draft!

    find_or_create_draft(node, @user)
    Globalize.with_locale(:en) { node.draft.update!(:title => "Changed in English only") }
    node.draft.save!

    post(:diff, params: { :node_id => node.id, :start_revision => "head", :end_revision => "draft" })

    assert_response :success
    assert_match(/Changed/, response.body)
  end

  test "diff respects an explicitly requested locale over the auto-detected one" do
    login_as :quentin
    node = Node.root.children.create!(:slug => "diff_explicit_locale_test")
    node.draft.save!
    node.publish_draft!

    find_or_create_draft(node, @user)
    Globalize.with_locale(:en) { node.draft.update!(:title => "English changed") }
    node.draft.save!

    post(:diff, params: { :node_id => node.id, :start_revision => "head", :end_revision => "draft", :locale => "de" })

    assert_response :success
    assert_no_match(/English changed/, response.body)
  end
end