laba5_OOP

import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import java.util.Objects;
class Person {
    String lastName;
    String firstName;
    String middleName;
    String birthDate;
    String gender;

    public Person(String lastName, String firstName, String middleName, String birthDate, String gender) {
        this.lastName = lastName;
        this.firstName = firstName;
        this.middleName = middleName;
        this.birthDate = birthDate;
        this.gender = gender;
    }
}
class Position {
    String title;

    int valuability;
    public Position(String title, int valuability) {
        this.title = title;
        this.valuability=valuability;
    }
}
class StaffPosition {
    Position position;
    Department department;

    public StaffPosition(Position position, Department department) {
        this.position = position;
        this.department = department;
    }
}


class Employee extends Person implements Comparable {
    Department department;
    Position position;
    double salary;
    boolean hired;
    public Employee(String lastName, String firstName, String middleName, String birthDate, String gender,
                    Department department, Position position, double salary) {
        super(lastName, firstName, middleName, birthDate, gender);
        this.department = department;
        this.position = position;
        this.salary = salary;
        this.hired = true;
    }
    public void hire() {
        this.hired = true;
    }
    public void dismiss() {
        this.hired = false;

    }
    @Override
    public boolean isComparable(Employee e) {
        if (!Objects.equals(department.name, e.department.name)) {
            return false;
        }
        return true;
    }
}
interface Comparable {
    boolean isComparable(Employee e);
}
class Statistics {
    public static int getEmployeeCount(Department department) {
        int count = 0;
        for (Employee emp:department.employees
             ) {
            count++;
        }
        return count;
    }

    public static double getAverageSalary(Department department) {
        int count = 0;
        double salary = 0;
        for (Employee emp:department.employees
             ) {
            count++;
            salary += emp.salary;
        }
        return salary/count;
    }
    public static double getTotalSalary(Department department) {
        double salary = 0;
        for (Employee emp:department.employees
        ) {
            salary += emp.salary;
        }
        return salary;
    }
}
class Department {
    String name;
    Employee head;
    List<Employee> employees;
    List<Department> subDepartments;
    public Department(String name, Employee head, List<Employee> employees,  List<Department> subDepartments) {
        this.name = name;
        this.head = head;
        this.employees = employees;
        this.subDepartments = subDepartments;
    }
}
class EmpComparator implements Comparator<Employee> {
    @Override
    public int compare(Employee e1, Employee e2) {
        if (!e1.isComparable(e2)) {
            return -1;
        }
        if (e1.position.valuability > e2.position.valuability) {
            return 1;
        } else if (e1.position.valuability < e2.position.valuability) {
            return 2;
        }
        return 0;
    }
}
public class Main {
    public static void main(String[] args) {

        Position manager = new Position("Manager", 3);
        Position Topmanager = new Position("Manager", 5);
        Position programmer = new Position("Programmer", 7);
        Department progDepartment = new Department("PROG Department", null, new ArrayList<>(), new ArrayList<>());
        Department hrDepartment = new Department("HR Department", null, new ArrayList<>(), new ArrayList<>());
        Employee johnDoe = new Employee("Doe", "John", "", "01-01-1990", "Male", hrDepartment, manager, 50000.0);
        Employee carlJonson = new Employee("Johnson", "Carl", "", "01-10-1993", "Male", hrDepartment, manager, 70000.0);
        Employee jimJonson = new Employee("Johnson", "Jim", "", "15-10-1993", "Male", progDepartment, programmer, 140000.0);
        Employee whaneKris = new Employee("Kris", "Whane", "", "01-01-1990", "Male", hrDepartment, Topmanager, 100000.0);

        ArrayList<Employee> listHR = new ArrayList<>();
        listHR.add(johnDoe);
        listHR.add(carlJonson);
        hrDepartment.employees = listHR;

        ArrayList<Employee> listPR = new ArrayList<>();
        listPR.add(jimJonson);
        progDepartment.employees = listPR;

        StaffPosition hrManager = new StaffPosition(manager, hrDepartment);
        System.out.println("Средняя зарплата по отделу: " + Statistics.getAverageSalary(hrDepartment));
        System.out.println("количество работников в отделе " + Statistics.getEmployeeCount(hrDepartment));
        System.out.println("полная зарплата по отделу " + Statistics.getTotalSalary(progDepartment));

        EmpComparator comparator = new EmpComparator();
        int k = comparator.compare(johnDoe,whaneKris);
        if(k == 1){
            System.out.println((whaneKris.firstName + " подчиняется " + johnDoe.firstName));
        } else if (k == 2) {
            System.out.println((johnDoe.firstName + " подчиняется " + whaneKris.firstName));
        } else if (k == -1) {
            System.out.println((johnDoe.firstName + " и " + whaneKris.firstName +"невозможно сравнить"));
        } else {
            System.out.println((johnDoe.firstName + whaneKris.firstName + " равны"));
        }

        k = comparator.compare(johnDoe,jimJonson);
        if(k == 1){
            System.out.println((jimJonson.firstName + " подчиняется "+ johnDoe.firstName));
        } else if (k == 2) {
            System.out.println((johnDoe.firstName + " подчиняется " + jimJonson.firstName));
        } else if (k == -1) {
            System.out.println((johnDoe.firstName + " и " + jimJonson.firstName + " невозможно сравнить"));
        } else {
            System.out.println((johnDoe.firstName + " " + jimJonson.firstName + " равны"));
        }

    }
}