class Activity < ApplicationRecord
  belongs_to :user

  validates :action, :resource_type, presence: true

  scope :recent, -> { order(created_at: :desc) }
  scope :for_user, ->(user) { where(user_id: user.id) }

  def self.log(user, action, resource_type, resource_id = nil, details = {})
    create(
      user_id: user.id,
      action: action,
      resource_type: resource_type,
      resource_id: resource_id,
      details: details.to_json
    )
  end

  def details_hash
    return {} if details.blank?
    JSON.parse(details)
  end
end