feat: add new_from_info method to Contact class for creating instances from formatted strings

lab2/contact.rb

@@ -49,4 +49,19 @@ class Contact
     raise ArgumentError, "Invalid telegram format: #{@telegram}" if @telegram && !valid_telegram?
     raise ArgumentError, "Invalid email format: #{@email}" if @email && !valid_email?
   end
+
+  def self.new_from_info(info_string)
+    info_string = info_string.sub(/^Contact: /, '').strip
+  
+    case info_string
+    when /\APhone: (.+)\z/i
+      new(phone: Regexp.last_match(1).strip)
+    when /\ATelegram: (.+)\z/i
+      new(telegram: Regexp.last_match(1).strip)
+    when /\AEmail: (.+)\z/i
+      new(email: Regexp.last_match(1).strip)
+    else
+      raise ArgumentError, "Invalid contact info format: #{info_string}"
+    end
+  end
 end