03. Inventory

package examPrep;

import java.util.Arrays;
import java.util.List;
import java.util.Scanner;
import java.util.stream.Collectors;

public class P03Inventory {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        List<String> inventoryList = Arrays.stream(scanner.nextLine().split(", ")).collect(Collectors.toList());

        String inputLine = scanner.nextLine();
        while (!inputLine.equals("Craft!")) {
            String[] commandsLine = inputLine.split(" - ");
            String command = commandsLine[0];

            switch (command) {
                case "Collect":
                    String addItem = commandsLine[1];
                    if (!inventoryList.contains(addItem)) {
                        inventoryList.add(addItem);
                    }
                    break;
                case "Drop":
                    String removeItem = commandsLine[1];
                    inventoryList.remove(removeItem);
                    break;
                case "Combine Items":
                    String[] items = commandsLine[1].split(":");
                    String oldItem = items[0];
                    String newItem = items[1];

                    if (inventoryList.contains(oldItem)) {
                        int indexOldItem = inventoryList.indexOf(oldItem);
                        inventoryList.add(indexOldItem + 1, newItem);
                    }
                    break;
                case "Renew":
                    String renewItem = commandsLine[1];
                    if (inventoryList.contains(renewItem)) {
                        inventoryList.remove(renewItem);
                        inventoryList.add(renewItem);
                    }
                    break;
            }

            inputLine = scanner.nextLine();
        }

        System.out.println(String.join(", ", inventoryList));
    }
}