1 files changed, 156 insertions, 0 deletions
diff --git a/app/models/integrations/base_issue_tracker.rb b/app/models/integrations/base_issue_tracker.rb
new file mode 100644
index 00000000000..6c24f762cd5
--- /dev/null
+++ b/app/models/integrations/base_issue_tracker.rb
@@ -0,0 +1,156 @@
+# frozen_string_literal: true
+
+module Integrations
+  class BaseIssueTracker < Integration
+    validate :one_issue_tracker, if: :activated?, on: :manual_change
+
+    # TODO: we can probably just delegate as part of
+    # https://gitlab.com/gitlab-org/gitlab/issues/29404
+    data_field :project_url, :issues_url, :new_issue_url
+
+    default_value_for :category, 'issue_tracker'
+
+    before_validation :handle_properties
+    before_validation :set_default_data, on: :create
+
+    # Pattern used to extract links from comments
+    # Override this method on services that uses different patterns
+    # This pattern does not support cross-project references
+    # The other code assumes that this pattern is a superset of all
+    # overridden patterns. See ReferenceRegexes.external_pattern
+    def self.reference_pattern(only_long: false)
+      if only_long
+        /(\b[A-Z][A-Z0-9_]*-)#{Gitlab::Regex.issue}/
+      else
+        /(\b[A-Z][A-Z0-9_]*-|#{Issue.reference_prefix})#{Gitlab::Regex.issue}/
+      end
+    end
+
+    def handle_properties
+      # this has been moved from initialize_properties and should be improved
+      # as part of https://gitlab.com/gitlab-org/gitlab/issues/29404
+      return unless properties
+
+      @legacy_properties_data = properties.dup
+      data_values = properties.slice!('title', 'description')
+      data_values.reject! { |key| data_fields.changed.include?(key) }
+      data_values.slice!(*data_fields.attributes.keys)
+      data_fields.assign_attributes(data_values) if data_values.present?
+
+      self.properties = {}
+    end
+
+    def legacy_properties_data
+      @legacy_properties_data ||= {}
+    end
+
+    def supports_data_fields?
+      true
+    end
+
+    def data_fields
+      issue_tracker_data || self.build_issue_tracker_data
+    end
+
+    def default?
+      default
+    end
+
+    def issue_url(iid)
+      issues_url.gsub(':id', iid.to_s)
+    end
+
+    def issue_tracker_path
+      project_url
+    end
+
+    def new_issue_path
+      new_issue_url
+    end
+
+    def issue_path(iid)
+      issue_url(iid)
+    end
+
+    def fields
+      [
+        { type: 'text', name: 'project_url', title: _('Project URL'), help: s_('IssueTracker|The URL to the project in the external issue tracker.'), required: true },
+        { type: 'text', name: 'issues_url', title: s_('IssueTracker|Issue URL'), help: s_('IssueTracker|The URL to view an issue in the external issue tracker. Must contain %{colon_id}.') % { colon_id: '<code>:id</code>'.html_safe }, required: true },
+        { type: 'text', name: 'new_issue_url', title: s_('IssueTracker|New issue URL'), help: s_('IssueTracker|The URL to create an issue in the external issue tracker.'), required: true }
+      ]
+    end
+
+    def initialize_properties
+      {}
+    end
+
+    # Initialize with default properties values
+    def set_default_data
+      return unless issues_tracker.present?
+
+      # we don't want to override if we have set something
+      return if project_url || issues_url || new_issue_url
+
+      data_fields.project_url = issues_tracker['project_url']
+      data_fields.issues_url = issues_tracker['issues_url']
+      data_fields.new_issue_url = issues_tracker['new_issue_url']
+    end
+
+    def self.supported_events
+      %w(push)
+    end
+
+    def execute(data)
+      return unless supported_events.include?(data[:object_kind])
+
+      message = "#{self.type} was unable to reach #{self.project_url}. Check the url and try again."
+      result = false
+
+      begin
+        response = Gitlab::HTTP.head(self.project_url, verify: true)
+
+        if response
+          message = "#{self.type} received response #{response.code} when attempting to connect to #{self.project_url}"
+          result = true
+        end
+      rescue Gitlab::HTTP::Error, Timeout::Error, SocketError, Errno::ECONNRESET, Errno::ECONNREFUSED, OpenSSL::SSL::SSLError => error
+        message = "#{self.type} had an error when trying to connect to #{self.project_url}: #{error.message}"
+      end
+      log_info(message)
+      result
+    end
+
+    def support_close_issue?
+      false
+    end
+
+    def support_cross_reference?
+      false
+    end
+
+    def create_cross_reference_note(mentioned, noteable, author)
+      # implement inside child
+    end
+
+    private
+
+    def enabled_in_gitlab_config
+      Gitlab.config.issues_tracker &&
+        Gitlab.config.issues_tracker.values.any? &&
+        issues_tracker
+    end
+
+    def issues_tracker
+      Gitlab.config.issues_tracker[to_param]
+    end
+
+    def one_issue_tracker
+      return if template? || instance?
+      return if project.blank?
+
+      if project.integrations.external_issue_trackers.where.not(id: id).any?
+        errors.add(:base, _('Another issue tracker is already in use. Only one issue tracker service can be active at a time'))
+      end
+    end
+  end
+end