beater_scan.rb

module Build::BeaterScan
  attr_accessor :beater1_sn, :beater2_sn, :beater3_sn, :beater4_sn

  def self.included(base)   
    base.load_beater_serial_numbers()

    base.validates :beater1_sn,         format: { with: /\A([BZ]\d{8}|\d{4}.{2}\d{4})\z/, message: "must have the format XnnnnYYMM OR YYMMRXnnnn"}
    base.validates :beater2_sn,         format: { with: /\A([BZ]\d{8}|\d{4}.{2}\d{4})\z/, message: "must have the format XnnnnYYMM OR YYMMRXnnnn"}, allow_blank: true
    base.validates :beater3_sn,         format: { with: /\A([BZ]\d{8}|\d{4}.{2}\d{4})\z/, message: "must have the format XnnnnYYMM OR YYMMRXnnnn"}, allow_blank: true
    base.validates :beater4_sn,         format: { with: /\A([BZ]\d{8}|\d{4}.{2}\d{4})\z/, message: "must have the format XnnnnYYMM OR YYMMRXnnnn"}, allow_blank: true
  
    base.validate :no_duplicate_beater_motors
  end

  def no_duplicate_beater_motors
    scans = {   beater1_sn: self.beater1_sn,
                beater2_sn: self.beater2_sn,
                beater3_sn: self.beater3_sn,
                beater4_sn: self.beater4_sn }.select { |k,v| !v.blank? }

    scans.each do |input, value|
      if scans.count { |k,v| v == value } > 1 then
        errors.add(input, "is a duplicate serial number")
      end
    end
  end

  def summarize_beater_serial_numbers
    data["Beater 1"]  = self.beater1_sn if !self.beater1_sn.blank?
    data["Beater 2"]  = self.beater2_sn if !self.beater2_sn.blank?
    data["Beater 3"]  = self.beater3_sn if !self.beater3_sn.blank?
    data["Beater 4"]  = self.beater4_sn if !self.beater4_sn.blank?

    return data.collect{ |k,v| "#{k} : #{v}"}.sort.join("\n")
  end

  def load_beater_serial_numbers
    bm = build_item.build_master_record
    if bm then
      self.beater1_sn    = bm.LeftBeaterMotorSN
      self.beater2_sn    = bm.MiddleBeaterMotorSN
      self.beater3_sn    = bm.RMiddleBeaterMoterSN
      self.beater4_sn    = bm.RightBeaterMoterSN
    end
  end
end