map_amenities.rb

class SupplierAmenities
  attr_reader :file
  attr_accessor :mapped

  def initialize(file)
    @file = file
  end

  def to_hash
    CSV.new(File.read(file), headers: true).to_a.map(&:to_hash)
  end

  def self.map(file)
    supplier_amenities = new file

    supplier_amenities.mapped = supplier_amenities.to_hash.each do |supplier_amenity|
      if amenity = find_gar_amenity(supplier_amenity['name'])
        supplier_amenity['target_id'] = amenity._id
        supplier_amenity['gar_name'] = amenity.name
        supplier_amenity['gar_description'] = amenity.description
      end
    end

    supplier_amenities
  end

  def for_seed_file
    mapped.select { |m| m['target_id'] }.map do |with_target|
      [with_target['code'], with_target['target_id'], with_target['name']]
    end
  end

  def csv_report
    CSV.generate do |csv|
      csv << %w(code target_id name gar_name gar_description)
      mapped.each do |m|
        csv << [m['code'], m['target_id'], m['name'], m['gar_name'], m['gar_description']]
      end
    end
  end

  def self.find_gar_amenity(name)
    name = Regexp.new(name, 'i')
    Amenity.any_of({ name: name }, { description: name }).first
  end
end