/* 
 a program to perform some basic operations on a list of string names. 
 */

package arraylist;

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("Ibanez, Diego");
        names.add("Bonilla, Walter");
        names.add("Gayguy, Christopher");

        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.println("Last names: " + lastNames);

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

        List<String> hyphenatedLastNamesList = hyphenatedNames(names);
        String hyphenatedLasts = String.join(", ", hyphenatedLastNamesList);
        System.out.println("Hyphenated last names: " + hyphenatedLasts);

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

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

        int namesProduct = namesProduct(names);
        System.out.println("Names product: " + namesProduct);
    }

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

    private 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 namesProduct(List<String> names) {
        int namesprod = 1;
        for (String name : names) {
            namesprod = namesprod * name.length();
        }
        return namesprod;
    }

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

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