/* 
 * 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 arrayListsProcessing {
//    private static String lastName(String directoryStyleName) {
//        int lastNameComma = directoryStyleName.indexOf(",");
//        String lastName = directoryStyleName.substring(0,lastNameComma);
//        return lastName;
//    }

    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, Camllie");
        names.add("Picasso, Pablo");
        names.add("Gallen-Kallela, Akseli");
        names.add("Zotto, Osvaldo");
        names.add("Aung, KoKo");
        names.add("Kyaw-Aung, Khant");
        //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 = 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 names 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;
    }
}