package Testat1.Aufgabe2;


import java.io.FileReader;
import java.io.LineNumberReader;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;

public class Main {
	public static void main(String[] args) {
		ArrayList<Person> people = new ArrayList<>();
		
		try (LineNumberReader reader = new LineNumberReader(new FileReader("Exercises/Testat1/Aufgabe2/people"))){
			String line;
			boolean isOddLine = true;
			DateTimeFormatter formatter = DateTimeFormatter.ofPattern("dd.MM.yyyy");
			while((line = reader.readLine()) != null) {
				if(isOddLine) {
					String[] parts = line.split("\\s+");
					LocalDate date = LocalDate.parse(parts[1], formatter);
					String name = parts[2];
					int age = Integer.parseInt(parts[3]);
					double size = Double.parseDouble(parts[4].replace(',', '.'));
					if(parts[0].equals("Person")) {
						people.add(new Person(date, name, age, size));
					}
					else if(parts[0].equals("Student")) {
						String subject = parts[5];
						people.add(new Student(date, name, age, size, subject));
					}
					else if(parts[0].equals("Employee")) {
						double salary = Double.parseDouble(parts[5]);
						people.add(new Employee(date, name, age, size, salary));
					}
					else if(parts[0].equals("Teacher")) {
						String field = parts[5];
						people.add(new Teacher(date, name, age, size, field));
					}
					
				}
				isOddLine = !isOddLine;
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		for (Person person : people) {
			System.out.println(person.toString());
		}
		System.out.printf("Durchschnittsalter: %s\n", Main.durchschnittRechner(people));
	}
	public static double durchschnittRechner (ArrayList<Person> people) {
		if(people.isEmpty() || people == null) {
			return 0.0;
		}
		int summe = 0;
		for (Person person : people) {
			summe =  summe + person.getAge();
		}
		return (double) summe/people.size();
	}
	
}