package arraylists;

import java.util.ArrayList;
import java.util.List;

public class ArrayListProcessing {

    public static void main(String[] args){
        List<String> names = new ArrayList<>();
        names.add("Holiday, Billie");
        names.add("Claudel, Camille");
        names.add("Picasso, Pablo");
        names.add("Gallen-Kallela, Akseli");
        names.add("Zotto, Osvaldo");
        names.add("James, LeBron");
        names.add("Lin, Jason");

        List<String> firstNamesList = firstNames(names);
        System.out.print("First names: ");
        for (String firstName : firstNamesList) {
            System.out.print(firstName + " ");
        }
        System.out.println();

        String firstNames = String.join(", ", firstNamesList);
        System.out.println("First names: " + firstNames);

        List<String> lastNamesList = lastNames(names);
        String lastNames = String.join(", ", lastNamesList);
        System.out.print("Last names: " + lastNames);
        System.out.println();

        List<String> upperCaseFirstNamesList = upperCaseNames(firstNames(names));
        String upperCaseFirstNames = String.join(", ", upperCaseFirstNamesList);
        System.out.println("Uppercase first names: " + upperCaseFirstNames);

        lastNamesList = hyphenatedNames(lastNames(names));
        lastNames = String.join(", ", lastNamesList);
        System.out.print("Last names: " + lastNames);
        System.out.println();

        int totalLength = totalNameLength(names);
        System.out.println("Total length: " + totalLength);

        int totalLengthOfFirstNames = totalNameLength(firstNamesList);
        System.out.println("Total length of First Names: " + totalLengthOfFirstNames);

        int productLength = productNameLength(names);
        System.out.println("Product length: " + productLength);
    }

    private static List<String> firstNames(List<String> names) {
        List<String> firsts = new ArrayList<>();
        for (String name : names) {
            firsts.add(firstName(name));
        }
        return firsts;
    }

    private static String firstName(String directoryStyleName) {
        int commaPosition = directoryStyleName.indexOf(",");
        return directoryStyleName.substring((commaPosition + 2), directoryStyleName.length());
    }

    private static List<String> lastNames(List<String> names) {
        List<String> lasts = new ArrayList<>();
        for (String name : names) {
            lasts.add(lastName(name));
        }
        return lasts;
    }

    private static String lastName(String directoryStyleName) {
        int commaPosition = directoryStyleName.indexOf(",");
        return directoryStyleName.substring(0, commaPosition);
    }

    public static List<String> upperCaseNames(List<String> names) {
        List<String> uppercases = new ArrayList<>();
        for (String name : names) {
            uppercases.add(name.toUpperCase());
        }
        return uppercases;
    }

    public static List<String> hyphenatedNames(List<String> names){
        List<String> hyphenateds = new ArrayList<>();
        for (String name : names){
            if (name.contains("-")) {
                hyphenateds.add(name);
            }
        }
        return hyphenateds;
    }

    public static int totalNameLength(List<String> names){
        int totalLength = 0;
        for (String name : names){
            totalLength = totalLength + name.length();
        }
        return totalLength;
    }

    public static int productNameLength(List<String> names){
        int totalLength = 1;
        for (String name : names){
            totalLength = totalLength * name.length();
        }
        return totalLength;
    }
}