class Overlay < ApplicationRecord
  belongs_to :user, optional: true
  has_many :template_overlays, dependent: :destroy
  has_many :server_templates, through: :template_overlays

  validates :name, :overlay_type, :path, presence: true
  validates :overlay_type, inclusion: { in: %w[system custom] }
  validates :name, uniqueness: { scope: :user_id, message: "must be unique per user" }

  scope :system_overlays, -> { where(overlay_type: "system").where(user_id: nil) }
  scope :custom_overlays, -> { where(overlay_type: "custom") }
  scope :for_user, ->(user) { where("user_id IS NULL OR user_id = ?", user.id) }
end