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");
        names.add("Urman, Michelle");


        // 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();

        String lastNames = String.join(", ", lastNamesList);

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

        // 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> hyphenatedNamesList = upperCaseNames(hyphenatedNames(names));
        String hyphenatedNames = String.join(", ", hyphenatedNamesList);

        System.out.println("Hyphenated names: " + hyphenatedNames);

        // 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 = 0;
        for (String name : firstNamesList) {
            firstlength = firstlength + name.length();
        }

        System.out.println("Total first name length: " + firstlength);

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

        int product = 1;
        for (String name : firstNamesList) {
            product = name.length()*product;

        }
        System.out.println("Product of first names: " + product);
    }


    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);
    }

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

    }
}