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

package arraylists;

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

public class ArrayListProcessing {

    public static void main(String[] args) {
        //POINT A: Add some strings which represent names to an ArrayList.
        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");

        //POINT B: Create an ArrayList of just the first names of the names
        //         ArrayList. Use a for loop to print out the names, separated
        //         by spaces
        List<String> firstNamesList = firstNames(names);
        System.out.print("First names: ");
        for (String firstName : firstNamesList) {
            System.out.print(firstName + " ");
        }
        System.out.println();

        //POINT C: Use String’s join function to create and print a String of
        //         just the first names of the names ArrayList with each
        //         name separated by a comma.
        String firstNames = String.join(", ", firstNamesList);
        System.out.println("First names: " + firstNames);

        //POINT D:  By analogy from points B and C, print a comma-separated
        //          list of the last names in the names ArrayList.
        List<String> lastNamesList = lastNames(names);
        System.out.print("Last names: ");
        for (String lastName : lastNamesList) {
            System.out.print(lastName + " ");
        }
        System.out.println();

        //POINT E: Print a comma-separated list of all uppercase first names
        //         from the list of names in the names ArrayList.
        List<String> upperCaseFirstNamesList = upperCaseNames(firstNames(names));
        String upperCaseFirstNames = String.join(", ", upperCaseFirstNamesList);
        System.out.println("Uppercase first names: " + upperCaseFirstNames);

        //POINT F:  Print a comma-separated list of all hyphenated last names
        //          from the list of names in the names ArrayList.
        List<String> hyphenatedLastNamesList = hyphenatedNames(lastNames(names));
        String hyphenatedLastNames = String.join(", ", hyphenatedLastNamesList);
        System.out.println("Hyphenated last names: " + hyphenatedLastNames);

        //POINT G: Print the integer value of the total length of all names
        //         in the names ArrayList.
        int totalLength = totalNameLength(names);
        System.out.println("Total length: " + totalLength);

        //POINT H: Print the integer value of the total length of all
        //         first names in the names ArrayList.
        int firstLength = totalNameLength(names);
        System.out.println("First name length: " + firstLength);

        //POINT I: Print the integer value of the product of the length of
        //          all first names in the names ArrayList.
    }

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

    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(lastNames(name));
        }
        return lasts;

    }

    private static String lastNames(String directoryStyleName) {
        return directoryStyleName.substring(0, directoryStyleName.indexOf(","));
    }

    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;
    }

}