ref: Extract common functionality into Person superclass

- Created a new superclass `Person` to encapsulate common attributes and methods for `Student` and `StudentShort`.
- Moved validation methods, contact handling, and common logic from `Student` and `StudentShort` into `Person`.
- Updated `Student` to inherit from `Person`, simplifying initialization and validation.
- Updated `StudentShort` to inherit from `Person`, reducing redundancy and aligning with the new superclass structure.
- Improved code maintainability by eliminating duplicated code and clarifying class responsibilities.

lab2/person.rb

@@ -0,0 +1,65 @@
+class Person
+    attr_accessor :id, :git
+  
+    def initialize(args = {})
+      @id = args[:id] || nil
+      @git = args[:git]
+      validate
+    end
+  
+    def set_contacts(phone: nil, telegram: nil, email: nil)
+      @phone = phone
+      raise ArgumentError, "Invalid phone number format: #{@phone}" if @phone && !self.class.valid_phone_number?(@phone)
+  
+      @telegram = telegram
+      raise ArgumentError, "Invalid telegram format: #{@telegram}" if @telegram && !self.class.valid_telegram?(@telegram)
+  
+      @email = email
+      raise ArgumentError, "Invalid email format: #{@email}" if @email && !self.class.valid_email?(@email)
+    end
+  
+    def self.valid_phone_number?(phone)
+      phone.match?(/\A\+?[0-9]{10,15}\z/)
+    end
+  
+    def self.valid_name?(name)
+      name.match?(/\A[А-Яа-яЁёA-Za-z\-]+\z/)
+    end
+  
+    def self.valid_telegram?(telegram)
+      telegram.nil? || telegram.match?(/\A@[A-Za-z0-9_]{5,32}\z/)
+    end
+  
+    def self.valid_email?(email)
+      email.nil? || email.match?(/\A[^@\s]+@[^@\s]+\.[^@\s]+\z/)
+    end
+  
+    def self.valid_git?(git)
+      git.nil? || git.match?(/\Ahttps:\/\/github\.com\/[A-Za-z0-9_\-]+\z/)
+    end
+  
+    def git_present?
+      !@git.nil? && !@git.empty?
+    end
+  
+    def contact_present?
+      !(@phone.nil? || @phone.empty?) || !(@telegram.nil? || @telegram.empty?) || !(@email.nil? || @email.empty?)
+    end
+  
+    def validate
+      raise ArgumentError, "Git link is required" unless git_present?
+      raise ArgumentError, "At least one contact (phone, telegram, or email) is required" unless contact_present?
+    end
+  
+    def contact_info
+      return "Phone: #{@phone}" if @phone
+      return "Telegram: #{@telegram}" if @telegram
+      return "Email: #{@email}" if @email
+      'No contact available'
+    end
+  
+    private
+  
+    attr_reader :phone, :telegram, :email
+    attr_writer :phone, :telegram, :email
+end

lab2/student.rb

@@ -1,48 +1,24 @@
-class Student
-    attr_accessor :id, :surname, :name, :patronymic, :git
+require_relative 'person'
 
-    def self.valid_phone_number?(phone)
-      phone.match?(/\A\+?[0-9]{10,15}\z/)
-    end
-  
-    def self.valid_name?(name)
-      name.match?(/\A[А-Яа-яЁёA-Za-z\-]+\z/)
-    end
-  
-    def self.valid_telegram?(telegram)
-      telegram.nil? || telegram.match?(/\A@[A-Za-z0-9_]{5,32}\z/)
-    end
-  
-    def self.valid_email?(email)
-      email.nil? || email.match?(/\A[^@\s]+@[^@\s]+\.[^@\s]+\z/)
-    end
-  
-    def self.valid_git?(git)
-      git.nil? || git.match?(/\Ahttps:\/\/github\.com\/[A-Za-z0-9_\-]+\z/)
-    end
+class Student < Person
+    attr_accessor :surname, :name, :patronymic
   
     def initialize(args = {})
+      super(args)
       @surname = args.fetch(:surname)
-      raise ArgumentError, "Invalid surname format: #{@surname}" unless Student.valid_name?(@surname)
+      raise ArgumentError, "Invalid surname format: #{@surname}" unless self.class.valid_name?(@surname)
   
       @name = args.fetch(:name)
-      raise ArgumentError, "Invalid name format: #{@name}" unless Student.valid_name?(@name)
+      raise ArgumentError, "Invalid name format: #{@name}" unless self.class.valid_name?(@name)
   
       @patronymic = args.fetch(:patronymic)
-      raise ArgumentError, "Invalid patronymic format: #{@patronymic}" unless Student.valid_name?(@patronymic)
-  
-      @id = args[:id] || nil
+      raise ArgumentError, "Invalid patronymic format: #{@patronymic}" unless self.class.valid_name?(@patronymic)
   
       set_contacts(
         phone: args[:phone],
         telegram: args[:telegram],
         email: args[:email]
       )
-  
-      @git = args[:git]
-      raise ArgumentError, "Invalid git format: #{@git}" unless Student.valid_git?(@git)
-  
-      validate
     end
   
     def self.from_string(student_string)
@@ -66,28 +42,8 @@ class Student
       )
     end
   
-    def set_contacts(phone: nil, telegram: nil, email: nil)
-      @phone = phone
-      raise ArgumentError, "Invalid phone number format: #{@phone}" if @phone && !Student.valid_phone_number?(@phone)
-  
-      @telegram = telegram
-      raise ArgumentError, "Invalid telegram format: #{@telegram}" if @telegram && !Student.valid_telegram?(@telegram)
-  
-      @email = email
-      raise ArgumentError, "Invalid email format: #{@email}" if @email && !Student.valid_email?(@email)
-    end
-  
-    def git_present?
-      !@git.nil? && !@git.empty?
-    end
-  
-    def contact_present?
-      !(@phone.nil? || @phone.empty?) || !(@telegram.nil? || @telegram.empty?) || !(@email.nil? || @email.empty?)
-    end
-  
-    def validate
-      raise ArgumentError, "Git link is required" unless git_present?
-      raise ArgumentError, "At least one contact (phone, telegram, or email) is required" unless contact_present?
+    def surname_and_initials
+      "#{@surname} #{name[0]}.#{patronymic[0]}."
     end
   
     def to_s
@@ -99,25 +55,4 @@ class Student
     def get_info
       "#{surname_and_initials}, Git: #{git_info}, Contact: #{contact_info}"
     end
-  
-    def surname_and_initials
-      "#{@surname} #{name[0]}.#{patronymic[0]}."
-    end
-  
-    def git_info
-      @git
-    end
-  
-    def contact_info
-      return "Phone: #{@phone}" if @phone
-      return "Telegram: #{@telegram}" if @telegram
-      return "Email: #{@email}" if @email
-      'No contact available'
-    end
-  
-    private
-  
-    attr_reader :phone, :telegram, :email
-    attr_writer :phone, :telegram, :email
 end
-  

lab2/student_short.rb

@@ -1,10 +1,11 @@
-class StudentShort
-    attr_reader :id, :surname_initials, :git, :contact
+require_relative 'person'
+
+class StudentShort < Person
+    attr_reader :surname_initials, :contact
   
     def initialize(student)
-      @id = student.id
+      super(id: student.id, git: student.git_info)
       @surname_initials = student.surname_and_initials
-      @git = student.git_info
       @contact = student.contact_info
     end