class IssueTracker
  include Mongoid::Document
  include Mongoid::Timestamps

  embedded_in :app, :inverse_of => :issue_tracker

  field :type_tracker, :type => String
  field :options, :type => Hash, :default => {}

  validate :validate_tracker

  def tracker
    @tracker ||=
      begin
        klass = ErrbitPlugin::Registry.issue_trackers[self.type_tracker] || ErrbitPlugin::NoneIssueTracker
        # TODO: we need to find out a better way to pass those config to the issue tracker
        klass.new(options.merge(
          github_repo: app.try(:github_repo),
          bitbucket_repo: app.try(:bitbucket_repo)
        ))
      end
  end

  def type_tracker
    self.attributes['type_tracker'] ?  self.attributes['type_tracker'] : 'none'
  end

  # Allow the tracker to validate its own params
  def validate_tracker
    (tracker.errors || {}).each do |k,v|
      errors.add k, v
    end
  end

  delegate :configured?, :to => :tracker
  delegate :create_issue, :to => :tracker
  delegate :url, :to => :tracker
end