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

package arraylistplay;

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

public class ArrayListsProcessing {

    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("Zhu, Wenhuan");
        names.add("Edward, Sheldon");


        // 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 firstNames : firstNamesList) {
            System.out.print(firstNames + " ");
        }
        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 ArrayList.
        //

        List<String> lastNamesList = lastNames(names);
        System.out.println("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 ArrayList

        List<String> upperCaseFirstNamesList = upperCaseName(firstNamesList);
        String upperCaseFirstNames = String.join(", ", upperCaseFirstNamesList);
        System.out.println("UpperCaseFirstNames: " + upperCaseFirstNames);

        // POINT F: Print a comma-separated list of all hyphenated last names from
        //          the list of names in the name ArrayList.

        List<String> hyphenatedNamesList = hyphenatedNames(lastNamesList);
        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 totalLengthOfFirstName = totalNameLength(firstNamesList);
        System.out.println("Total Length of first names : " + totalLengthOfFirstName);

        // POINT I: Print the integer value of the product of the length of all first
        //          names in the names ArrayList.
        //
        int totalProductNameLength = productNameLength(firstNamesList);
        System.out.println("Total product of first names length : " + totalProductNameLength);
    }


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

    private static List<String> upperCaseName(List<String> names) {
        List<String> upperCase = new ArrayList<>();
        for (String name : names) {
            upperCase.add(name.toUpperCase());
        }
        return upperCase;
    }
    private static String firstName(String directoryStyleName) {
        int firstNameComma = directoryStyleName.indexOf(",");
        String firstName = directoryStyleName.substring(firstNameComma+2);
        return firstName;
    }
    private static String lastName(String directoryStyleName) {
        int lastNameComma = directoryStyleName.indexOf(",");
        String lastName = directoryStyleName.substring(0,lastNameComma);
        return lastName;
    }
    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;
    }

    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;
    }
}