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 of 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("Soules, Douglas");
        //Point B
        List<String> firstNamesList = firstNames(names);
        System.out.print("First names: ");
        for (String firstName : firstNamesList){System.out.print(firstName + " ");}
        System.out.println();
        //Point C
        String firstNames = String.join(", " , firstNamesList);
        System.out.println("First names: " + firstNames);
        //Point D
        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
        List<String> upperCaseFirstNamesList = upperCaseNames(firstNamesList);
        String upperCaseFirstNames = String.join(", " , upperCaseFirstNamesList);
        System.out.println("Uppercase first names: " + upperCaseFirstNames);
        //Point F
        List<String> hyphenatedNamesList =  hyphenatedNames(lastNamesList);
        String hyphenatedNames = String.join(", " , hyphenatedNamesList);
        System.out.println("Uppercase first names: " + hyphenatedNames);
        //Point G
        int totalLength = totalNameLength(names);
        System.out.println("Total length: " + totalLength);
        //Point H
        int totalFirstLength = totalNameLength(firstNamesList);
        System.out.println("Total first name length: " + totalFirstLength);
        //Point I
        int totalLastLength = totalNameLength(lastNamesList);
        System.out.println("Total last name length: " + totalLastLength);
}

    private static int totalNameLength(List<String> names) {
        int totalLength = 0;
        for (String name : names){
            totalLength = totalLength + name.length();
        }
        return totalLength;
    }

    private static List<String> hyphenatedNames(List<String> names) {
        List<String> hyphenateds = new ArrayList<>();
        for (String name : names){
            if (name.contains("-")){
                hyphenateds.add(name);
            }
        }
        return hyphenateds;
    }

    private static List<String> upperCaseNames(List<String> names) {
        List<String> upperCases = new ArrayList<>();
        for (String name : names){
            upperCases.add(name.toUpperCase());
        }
        return upperCases;
    }

    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 String lastName(String directoryStyleName) {
        int Comma = directoryStyleName.indexOf(",");
        String lastName = directoryStyleName.substring(0,Comma);
        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 String firstName(String directoryStyleName) {
        int Space = directoryStyleName.indexOf(" ");
        String firstName = directoryStyleName.substring(Space + 1);
        return firstName;
    }
}