class Profile < ApplicationRecord
  belongs_to :user

  validates :data, presence: true
  validates :user_id, uniqueness: true
  validates_with ProfileValidator

  has_many :custom_profile_fields, dependent: :destroy

  store_attribute :data, :custom_attributes, :json, default: {}

  # Static fields are columns on the profiles table; they have no relationship
  # to a ProfileField record. These are columns we can safely assume exist for
  # any profile on a given Forem.
  STATIC_FIELDS = %w[summary location website_url].freeze

  SPECIAL_DISPLAY_ATTRIBUTES = %w[
    summary
    employment_title
    employer_name
    employer_url
    location
  ].freeze

  # NOTE: @citizen428 This is a temporary mapping so we don't break DEV during
  # profile migration/generalization work.
  MAPPED_ATTRIBUTES = {
    brand_color1: :bg_color_hex,
    brand_color2: :text_color_hex,
    display_email_on_profile: :email_public,
    education: :education,
    skills_languages: :mostly_work_with
  }.with_indifferent_access.freeze

  # Generates typed accessors for all currently defined profile fields.
  def self.refresh_attributes!
    return if ENV["ENV_AVAILABLE"] == "false"
    return unless Database.table_available?("profiles")

    ProfileField.find_each do |field|
      # Don't generate accessors for static fields stored on the table.
      # TODO: [@jacobherrington] Remove this when ProfileFields for the static
      # fields are dropped from production and the associated data is removed.
      # https://github.com/forem/forem/pull/13641#discussion_r637641185
      next if STATIC_FIELDS.any?(field.attribute_name)

      store_attribute :data, field.attribute_name.to_sym, field.type
    end
  end

  # Set up all profile attributes when this class loads so all store_attribute
  # accessors get defined immediately.
  refresh_attributes!

  # Returns an array of all currently defined `store_attribute`s on `data`.
  def self.attributes
    (stored_attributes[:data] || []).map(&:to_s)
  end

  def self.special_attributes
    SPECIAL_DISPLAY_ATTRIBUTES
  end

  def self.static_fields
    STATIC_FIELDS
  end

  def custom_profile_attributes
    custom_profile_fields.pluck(:attribute_name)
  end

  def clear!
    update(data: {})
  end
end