feat: Add contact validation and secure modification for Student class

- Implemented `set_contacts` method to safely set phone, telegram, and email fields.
- Made contact fields (`phone`, `telegram`, `email`) private and accessible only through `set_contacts`.
- Added validation within `set_contacts` to ensure contact fields are correctly formatted.
- Modified the `initialize` method to utilize `set_contacts` for setting contact values during object creation.
- Added checks in the `validate` method to ensure Git presence and at least one contact method.
- Updated test cases in `main.rb` to demonstrate correct and incorrect uses of contact modifications.
- Ensured that contact fields cannot be modified directly, maintaining data integrity.

lab2/main.rb

@@ -6,22 +6,28 @@ begin
     name: 'Артем-Дариус',
     patronymic: 'Вебер',
     id: 1,
+    git: 'https://git.djft.ru'
+  )
+
+  student1.set_contacts(
     phone: '+79891242223',
     telegram: '@alstroemeria22',
-        email: 'no-replay@djft.ru',
-        git: 'https://git.djft.ru'
+    email: 'no-replay@djft.ru'
   )
 
   student2 = Student.new(
-        surname: 'nil',
+    surname: 'Норакет',
     name: 'Норакет',
-        patronymic: 'nil'
+    patronymic: 'Фамилия'
+  )
+
+  student2.set_contacts(
+    phone: '+70000000000'
   )
 
   puts student1
   puts '-' * 40
   puts student2
 rescue ArgumentError => e
-    puts "Err.: #{e.message}"
+  puts "Ошибка: #{e.message}"
 end
-

lab2/student.rb

@@ -1,5 +1,5 @@
 class Student
-    attr_accessor :id, :surname, :name, :patronymic, :phone, :telegram, :email, :git
+    attr_accessor :id, :surname, :name, :patronymic, :git
   
     def self.valid_phone_number?(phone)
       phone.match?(/\A\+?[0-9]{10,15}\z/)
@@ -33,16 +33,11 @@ class Student
   
       @id = args[:id] || nil
   
-        @phone = args[:phone]
-        if @phone && !Student.valid_phone_number?(@phone)
-            raise ArgumentError, "Invalid phone number format: #{@phone}"
-        end
-
-        @telegram = args[:telegram]
-        raise ArgumentError, "Invalid telegram format: #{@telegram}" unless Student.valid_telegram?(@telegram)
-
-        @email = args[:email]
-        raise ArgumentError, "Invalid email format: #{@email}" unless Student.valid_email?(@email)
+      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)
@@ -50,6 +45,17 @@ class Student
       validate
     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
@@ -71,4 +77,10 @@ class Student
       "Email: #{@email || 'N/A'}\n" \
       "Git: #{@git || 'N/A'}"
     end
+  
+    private
+  
+    attr_reader :phone, :telegram, :email
+  
+    attr_writer :phone, :telegram, :email
 end