class Statistic < ActiveRecord::Base
  KEYS = [
    KEY_BUILD_LIST                  = 'build_list',
    KEY_BUILD_LIST_BUILD_STARTED    = "#{KEY_BUILD_LIST}.#{BuildList::BUILD_STARTED}",
    KEY_BUILD_LIST_SUCCESS          = "#{KEY_BUILD_LIST}.#{BuildList::SUCCESS}",
    KEY_BUILD_LIST_BUILD_ERROR      = "#{KEY_BUILD_LIST}.#{BuildList::BUILD_ERROR}",
    KEY_BUILD_LIST_BUILD_PUBLISHED  = "#{KEY_BUILD_LIST}.#{BuildList::BUILD_PUBLISHED}",
  ]

  belongs_to :user
  belongs_to :project

  validates :user_id,
    uniqueness: { scope: [:project_id, :key, :activity_at] },
    presence: true

  validates :email,
    presence: true

  validates :project_id,
    presence: true

  validates :project_name_with_owner,
    presence: true

  validates :key,
    presence: true

  validates :counter,
    presence: true

  validates :activity_at,
    presence: true

  scope :for_period,            -> (start_date, end_date) {
    where(activity_at: (start_date..end_date))
  }
  scope :for_users,             -> (user_ids)   {
    where(user_id: user_ids) if user_ids.present?
  }
  scope :for_groups,            -> (group_ids)  {
    where(["project_id = ANY (
        ARRAY (
          SELECT target_id
          FROM relations
          INNER JOIN projects ON projects.id = relations.target_id
          WHERE relations.target_type = 'Project' AND
          projects.owner_type = 'Group' AND
          relations.actor_type = 'Group' AND
          relations.actor_id IN (:groups)
        )
      )", { groups: group_ids }
    ]) if group_ids.present?
  }

  scope :build_lists_started,   -> { where(key: KEY_BUILD_LIST_BUILD_STARTED) }
  scope :build_lists_success,   -> { where(key: KEY_BUILD_LIST_SUCCESS) }
  scope :build_lists_error,     -> { where(key: KEY_BUILD_LIST_BUILD_ERROR) }
  scope :build_lists_published, -> { where(key: KEY_BUILD_LIST_BUILD_PUBLISHED) }

  def self.statsd_increment(options = {})
    options[:activity_at] = options[:activity_at].to_i if options[:activity_at]
    UpdateStatisticsJob.perform_async(options)
  end

end