1 files changed, 97 insertions, 0 deletions
diff --git a/app/models/project_services/confluence_service.rb b/app/models/project_services/confluence_service.rb
new file mode 100644
index 00000000000..23ac5676b39
--- /dev/null
+++ b/app/models/project_services/confluence_service.rb
@@ -0,0 +1,97 @@
+# frozen_string_literal: true
+
+class ConfluenceService < Service
+  include ActionView::Helpers::UrlHelper
+
+  VALID_SCHEME_MATCH = %r{\Ahttps?\Z}.freeze
+  VALID_HOST_MATCH = %r{\A.+\.atlassian\.net\Z}.freeze
+  VALID_PATH_MATCH = %r{\A/wiki(/|\Z)}.freeze
+
+  FEATURE_FLAG = :confluence_integration
+
+  prop_accessor :confluence_url
+
+  validates :confluence_url, presence: true, if: :activated?
+  validate :validate_confluence_url_is_cloud, if: :activated?
+
+  after_commit :cache_project_has_confluence
+
+  def self.feature_enabled?(actor)
+    ::Feature.enabled?(FEATURE_FLAG, actor)
+  end
+
+  def self.to_param
+    'confluence'
+  end
+
+  def self.supported_events
+    %w()
+  end
+
+  def title
+    s_('ConfluenceService|Confluence Workspace')
+  end
+
+  def description
+    s_('ConfluenceService|Connect a Confluence Cloud Workspace to your GitLab project')
+  end
+
+  def detailed_description
+    return unless project.wiki_enabled?
+
+    if activated?
+      wiki_url = project.wiki.web_url
+
+      s_(
+        'ConfluenceService|Your GitLab Wiki can be accessed here: %{wiki_link}. To re-enable your GitLab Wiki, disable this integration' %
+        { wiki_link: link_to(wiki_url, wiki_url) }
+      ).html_safe
+    else
+      s_('ConfluenceService|Enabling the Confluence Workspace will disable the default GitLab Wiki. Your GitLab Wiki data will be saved and you can always re-enable it later by turning off this integration').html_safe
+    end
+  end
+
+  def fields
+    [
+      {
+        type: 'text',
+        name: 'confluence_url',
+        title: 'Confluence Cloud Workspace URL',
+        placeholder: s_('ConfluenceService|The URL of the Confluence Workspace'),
+        required: true
+      }
+    ]
+  end
+
+  def can_test?
+    false
+  end
+
+  private
+
+  def validate_confluence_url_is_cloud
+    unless confluence_uri_valid?
+      errors.add(:confluence_url, 'URL must be to a Confluence Cloud Workspace hosted on atlassian.net')
+    end
+  end
+
+  def confluence_uri_valid?
+    return false unless confluence_url
+
+    uri = URI.parse(confluence_url)
+
+    (uri.scheme&.match(VALID_SCHEME_MATCH) &&
+      uri.host&.match(VALID_HOST_MATCH) &&
+      uri.path&.match(VALID_PATH_MATCH)).present?
+
+  rescue URI::InvalidURIError
+    false
+  end
+
+  def cache_project_has_confluence
+    return unless project && !project.destroyed?
+
+    project.project_setting.save! unless project.project_setting.persisted?
+    project.project_setting.update_column(:has_confluence, active?)
+  end
+end