Lab3/student.rb - Lab4 - Evorunner/ruby_labs

Lab3/student.rb
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Иван
lab-03: ООП, классы Student и StudentCollection
31 май 2026, 17:08
31 май 2026, 17:084ab2cb6
class Student
  VALID_GENDERS     = %w[male female].freeze
  VALID_SKILL_LEVELS = %w[beginner intermediate advanced expert].freeze
  EMAIL_REGEX       = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i

  attr_accessor :name, :age, :gender, :group, :email, :skills

  def initialize(name:, age:, gender:, group:, email:, skills: {})
    @name   = name
    @age    = age
    @gender = gender
    @group  = group
    @email  = email
    @skills = skills
  end

  # Валидации отдельных полей

  def valid_name?
    name.is_a?(String) && !name.strip.empty?
  end

  def valid_age?
    age.is_a?(Integer) && age > 0
  end

  def valid_gender?
    VALID_GENDERS.include?(gender.to_s)
  end

  def valid_group?
    group.is_a?(String) && !group.strip.empty?
  end

  def valid_email?
    email.is_a?(String) && email.match?(EMAIL_REGEX)
  end

  def valid_skills?
    return false unless skills.is_a?(Hash)
    skills.all? do |skill_name, level|
      !skill_name.to_s.strip.empty? && VALID_SKILL_LEVELS.include?(level)
    end
  end

  # Общая валидация

  def valid?
    valid_name? && valid_age? && valid_gender? &&
      valid_group? && valid_email? && valid_skills?
  end

  def errors
    errs = []
    errs << "Имя не может быть пустым"                              unless valid_name?
    errs << "Возраст должен быть положительным целым числом"        unless valid_age?
    errs << "Пол должен быть 'male' или 'female'"                   unless valid_gender?
    errs << "Группа не может быть пустой"                           unless valid_group?
    errs << "Email некорректен"                                     unless valid_email?
    errs << "Навыки содержат некорректные данные"                   unless valid_skills?
    errs
  end

  # Форматированный вывод

  def to_s
    gender_str = gender.to_s == "male" ? "мужской" : "женский"
    lines = []
    lines << "#{name}:"
    lines << "   #{age} лет, #{gender_str}"
    lines << "   #{email}"
    if skills.any?
      lines << "   Навыки:"
      skills.each { |skill, level| lines << "     #{skill}: #{level}" }
    end
    lines.join("\n")
  end
end