# Lab 2

> "И тут я обнаружил что случайно сделал 3-5 задачи в 1-2"

## Диаграмма классов:

```mermaid
classDiagram
    class Contact {
        - phone : String?
        - telegram : String?
        - email : String?
        + Contact(phone : String?, telegram : String?, email : String?)
        + valid_phone_number() : Boolean
        + valid_telegram() : Boolean
        + valid_email() : Boolean
        + present() : Boolean
        + info() : String
        - validate_contacts()
        + new_from_info(info_string : String) : Contact
    }

    class Person {
        - id : String
        - git : String
        - contact : Contact
        + Person(id : String, git : String, contact : Contact)
        + git_present() : Boolean
        + contact_present() : Boolean
        + contact_info() : String
        + valid_git(git : String) : Boolean
        + valid_id(id : String) : Boolean
        - validate_person()
    }

    class StudentRepository {
        + read_from_txt(file_path : String) : List~Student~
        + write_to_txt(file_path : String, students : List~Student~)
    }

    class StudentShort {
        - surname_initials : String
        - contact : String
        + StudentShort(id : String, git : String, surname_initials : String, contact : Contact)
        + from_student(student : Student) : StudentShort
        + from_string(id : String, info_string : String) : StudentShort
        + to_s() : String
    }

    class Student {
        - surname : String
        - name : String
        - patronymic : String
        + Student(id : String, git : String, contact : Contact, surname : String, name : String, patronymic : String)
        + from_string(student_string : String) : Student
        + surname_and_initials() : String
        + to_s() : String
        + get_info() : String
        - validate_student()
    }

    Contact <|-- Person
    Person <|-- Student
    Person <|-- StudentShort
    Student <.. StudentRepository
```

где + - public, - - private