refactor: enhance StudentShort initialization and add from_student method

lab2/student_short.rb

@@ -1,31 +1,41 @@
 require_relative 'person'
 
 class StudentShort < Person
-    attr_reader :surname_initials, :contact
-  
-    def initialize(student)
-      super(id: student.id, git: student.git_info)
-      @surname_initials = student.surname_and_initials
-      @contact = student.contact_info
-    end
-  
-    def self.from_string(id, info_string)
-      parts = info_string.split(', ').map(&:strip)
-      surname_initials = parts[0]
-      git = parts[1].split(': ').last
-      contact = parts[2].split(': ').last
+  attr_reader :surname_initials, :contact
+
+  def initialize(id:, git:, surname_initials:, contact:)
+    super(id: id, git: git, contact: contact)
+    @surname_initials = surname_initials
+  end
+
+  def self.from_student(student)
+    new(
+      id: student.id,
+      git: student.git,
+      surname_initials: student.surname_and_initials,
+      contact: student.contact_info
+    )
+  end
+
+  def self.from_string(id, info_string)
+    parts = info_string.split(',').map(&:strip)
+    raise ArgumentError, 'Invalid info string format' if parts.size < 3
   
-      new_instance = allocate
-      new_instance.send(:initialize_from_data, id, surname_initials, git, contact)
-      new_instance
-    end
+    surname_initials = parts[0]
+    git = parts[1].split(': ').last.strip
+    contact_string = parts[2].split(': ', 2).last.strip
   
-    private
+    contact = Contact.new_from_info(contact_string)
   
-    def initialize_from_data(id, surname_initials, git, contact)
-      @id = id
-      @surname_initials = surname_initials
-      @git = git
-      @contact = contact
-    end
-end
+    new(
+      id: id,
+      git: git,
+      surname_initials: surname_initials,
+      contact: contact.info
+    )
+  end
+
+  def to_s
+    "#{@surname_initials}, Git: #{@git}, Contact: #{@contact}"
+  end
+end