ubicloud/lib/resource_methods.rb

# frozen_string_literal: true

module ResourceMethods
  def self.included(base)
    base.extend(ClassMethods)
    base.instance_variable_set(:@ubid_format, /\A#{base.ubid_type}[a-z0-9]{24}\z/)
  end

  def freeze
    ubid
    super
  end

  def ubid
    @ubid ||= UBID.from_uuidish(id).to_s.downcase
  end

  def to_s
    inspect_prefix
  end

  def inspect_pk
    ubid if id
  end

  def before_validation
    set_uuid
    super
  end

  def set_uuid
    self.id ||= self.class.generate_uuid if new?
    self
  end

  def validate
    super

    if self.class.ubid_format.match?(values[:name])
      errors.add(:name, "cannot be exactly 26 numbers/lowercase characters starting with #{self.class.ubid_type} to avoid overlap with id format")
    end
  end

  INSPECT_CONVERTERS = {
    "uuid" => lambda { |v| UBID.from_uuidish(v).to_s },
    "cidr" => :to_s.to_proc,
    "inet" => :to_s.to_proc,
    "timestamp with time zone" => lambda { |v| v.strftime("%F %T") }
  }.freeze
  def inspect_values
    inspect_values = {}
    sch = db_schema
    @values.except(*self.class.redacted_columns).each do |k, v|
      next if k == :id

      inspect_values[k] = if v
        if (converter = INSPECT_CONVERTERS[sch[k][:db_type]])
          converter.call(v)
        else
          v
        end
      else
        v
      end
    end
    inspect_values.inspect
  end

  NON_ARCHIVED_MODELS = ["ArchivedRecord", "Semaphore"]
  def before_destroy
    model_name = self.class.name
    unless NON_ARCHIVED_MODELS.include?(model_name)
      model_values = values.merge(model_name: model_name)

      encryption_metadata = self.class.instance_variable_get(:@column_encryption_metadata)
      unless encryption_metadata.empty?
        encryption_metadata.keys.each do |key|
          model_values.delete(key)
        end
      end

      ArchivedRecord.create(model_name: model_name, model_values: model_values)
    end

    super
  end

  module ClassMethods
    attr_reader :ubid_format

    # Adapted from sequel/model/inflections.rb's underscore, to convert
    # class names into symbols
    def self.uppercase_underscore(s)
      s.gsub(/([A-Z]+)([A-Z][a-z])/, '\1_\2').gsub(/([a-z\d])([A-Z])/, '\1_\2').tr("-", "_").upcase
    end

    def [](arg)
      if arg.is_a?(UBID)
        super(arg.to_uuid)
      elsif arg.is_a?(String) && arg.bytesize == 26
        begin
          ubid = UBID.parse(arg)
        rescue UBIDParseError
          super
        else
          super(ubid.to_uuid)
        end
      else
        super
      end
    end

    def ubid_type
      UBID.const_get("TYPE_#{ClassMethods.uppercase_underscore(name)}")
    end

    def generate_ubid
      UBID.generate(ubid_type)
    end

    def generate_uuid
      generate_ubid.to_uuid
    end

    def new_with_id(...)
      new(...).set_uuid
    end

    def create_with_id(...)
      create(...)
    end

    def redacted_columns
      column_encryption_metadata.keys || []
    end
  end
end