Merge branch 'backport-5986-license-templates' into 'master'

Core backports from the Premium license templates feature

See merge request gitlab-org/gitlab-ce!21212

6 files changed, 108 insertions, 5 deletions

diff --git a/app/assets/javascripts/pages/admin/application_settings/index.js b/app/assets/javascripts/pages/admin/application_settings/index.js
index 48d75f5443b..47bd70537f1 100644
--- a/app/assets/javascripts/pages/admin/application_settings/index.js
+++ b/app/assets/javascripts/pages/admin/application_settings/index.js
@@ -1,6 +1,8 @@
 import initSettingsPanels from '~/settings_panels';
+import projectSelect from '~/project_select';
 
 document.addEventListener('DOMContentLoaded', () => {
   // Initialize expandable settings panels
   initSettingsPanels();
+  projectSelect();
 });
diff --git a/app/assets/javascripts/project_select.js b/app/assets/javascripts/project_select.js
index bce7556bd40..6f3b32f8eea 100644
--- a/app/assets/javascripts/project_select.js
+++ b/app/assets/javascripts/project_select.js
@@ -14,6 +14,7 @@ export default function projectSelect() {
     this.orderBy = $(select).data('orderBy') || 'id';
     this.withIssuesEnabled = $(select).data('withIssuesEnabled');
     this.withMergeRequestsEnabled = $(select).data('withMergeRequestsEnabled');
+    this.allowClear = $(select).data('allowClear') || false;
 
     placeholder = "Search for project";
     if (this.includeGroups) {
@@ -71,6 +72,13 @@ export default function projectSelect() {
       text: function (project) {
         return project.name_with_namespace || project.name;
       },
+
+      initSelection: function(el, callback) {
+        return Api.project(el.val()).then(({ data }) => callback(data));
+      },
+
+      allowClear: this.allowClear,
+
       dropdownCssClass: "ajax-project-dropdown"
     });
     if (simpleFilter) return select;
diff --git a/app/finders/license_template_finder.rb b/app/finders/license_template_finder.rb
new file mode 100644
index 00000000000..fad33f0eca2
--- /dev/null
+++ b/app/finders/license_template_finder.rb
@@ -0,0 +1,36 @@
+# LicenseTemplateFinder
+#
+# Used to find license templates, which may come from a variety of external
+# sources
+#
+# Arguments:
+#   popular: boolean. When set to true, only "popular" licenses are shown. When
+#            false, all licenses except popular ones are shown. When nil (the
+#            default), *all* licenses will be shown.
+class LicenseTemplateFinder
+  attr_reader :params
+
+  def initialize(params = {})
+    @params = params
+  end
+
+  def execute
+    Licensee::License.all(featured: popular_only?).map do |license|
+      LicenseTemplate.new(
+        id: license.key,
+        name: license.name,
+        nickname: license.nickname,
+        category: (license.featured? ? :Popular : :Other),
+        content: license.content,
+        url: license.url,
+        meta: license.meta
+      )
+    end
+  end
+
+  private
+
+  def popular_only?
+    params.fetch(:popular, nil)
+  end
+end
diff --git a/app/helpers/blob_helper.rb b/app/helpers/blob_helper.rb
index 7eb45ddd117..b61cbd5418a 100644
--- a/app/helpers/blob_helper.rb
+++ b/app/helpers/blob_helper.rb
@@ -182,12 +182,14 @@ module BlobHelper
   def licenses_for_select
     return @licenses_for_select if defined?(@licenses_for_select)
 
-    licenses = Licensee::License.all
+    grouped_licenses = LicenseTemplateFinder.new.execute.group_by(&:category)
+    categories = grouped_licenses.keys
 
-    @licenses_for_select = {
-      Popular: licenses.select(&:featured).map { |license| { name: license.name, id: license.key } },
-      Other: licenses.reject(&:featured).map { |license| { name: license.name, id: license.key } }
-    }
+    @licenses_for_select = categories.each_with_object({}) do |category, hash|
+      hash[category] = grouped_licenses[category].map do |license|
+        { name: license.name, id: license.id }
+      end
+    end
   end
 
   def ref_project
diff --git a/app/models/license_template.rb b/app/models/license_template.rb
new file mode 100644
index 00000000000..0ad75b27827
--- /dev/null
+++ b/app/models/license_template.rb
@@ -0,0 +1,53 @@
+class LicenseTemplate
+  PROJECT_TEMPLATE_REGEX =
+    %r{[\<\{\[]
+      (project|description|
+      one\sline\s.+\swhat\sit\sdoes\.) # matching the start and end is enough here
+    [\>\}\]]}xi.freeze
+  YEAR_TEMPLATE_REGEX = /[<{\[](year|yyyy)[>}\]]/i.freeze
+  FULLNAME_TEMPLATE_REGEX =
+    %r{[\<\{\[]
+      (fullname|name\sof\s(author|copyright\sowner))
+    [\>\}\]]}xi.freeze
+
+  attr_reader :id, :name, :category, :nickname, :url, :meta
+
+  alias_method :key, :id
+
+  def initialize(id:, name:, category:, content:, nickname: nil, url: nil, meta: {})
+    @id = id
+    @name = name
+    @category = category
+    @content = content
+    @nickname = nickname
+    @url = url
+    @meta = meta
+  end
+
+  def popular?
+    category == :Popular
+  end
+  alias_method :featured?, :popular?
+
+  # Returns the text of the license
+  def content
+    if @content.respond_to?(:call)
+      @content = @content.call
+    else
+      @content
+    end
+  end
+
+  # Populate placeholders in the LicenseTemplate content
+  def resolve!(project_name: nil, fullname: nil, year: Time.now.year.to_s)
+    # Ensure the string isn't shared with any other instance of LicenseTemplate
+    new_content = content.dup
+    new_content.gsub!(YEAR_TEMPLATE_REGEX, year) if year.present?
+    new_content.gsub!(PROJECT_TEMPLATE_REGEX, project_name) if project_name.present?
+    new_content.gsub!(FULLNAME_TEMPLATE_REGEX, fullname) if fullname.present?
+
+    @content = new_content
+
+    self
+  end
+end
diff --git a/app/views/admin/application_settings/show.html.haml b/app/views/admin/application_settings/show.html.haml
index 258d50ad676..6133a7646f4 100644
--- a/app/views/admin/application_settings/show.html.haml
+++ b/app/views/admin/application_settings/show.html.haml
@@ -325,6 +325,8 @@
   .settings-content
     = render partial: 'repository_mirrors_form'
 
+= render_if_exists 'admin/application_settings/templates', expanded: expanded
+
 %section.settings.as-third-party-offers.no-animate#js-third-party-offers-settings{ class: ('expanded' if expanded) }
   .settings-header
     %h4