C# Fundamentals - 03. Inventory - MidExam 29.02.2020 G1

using System;
using System.Collections.Generic;
using System.Linq;

namespace _03._Inventory
{
    class Invenotry
    {
        static void Main()
        {
            List<string> inventory = Console.ReadLine()
                                     .Split(", ")
                                     .ToList();

            string command = Console.ReadLine();
            while (command != "Craft!")
            {
                string[] currentCommand = command.Split(" - ");
                string instruction = currentCommand[0];


                if (instruction == "Collect")
                {
                    string item = currentCommand[1];

                    if (!inventory.Contains(item))
                    {
                        inventory.Add(item);
                    }
                }

                else if (instruction == "Drop")
                {
                    string item = currentCommand[1];

                    if (inventory.Contains(item))
                    {
                        inventory.Remove(item);
                    }
                }

                else if (instruction == "Combine Items")
                {
                    string[] items = currentCommand[1].Split(':');
                    string oldItem = items[0];
                    string newItem = items[1];

                    if (inventory.Contains(oldItem))
                    {
                        int index = inventory.IndexOf(oldItem) + 1;
                        inventory.Insert(index, newItem);
                    }
                    // NB!! NB !!
                }

                else if (instruction == "Renew")
                {
                    string item = currentCommand[1];

                    if (inventory.Contains(item))
                    {
                        inventory.Remove(item);
                        inventory.Add(item);
                    }
                }

                command = Console.ReadLine();
            }

            Console.WriteLine(string.Join(", ", inventory));
        }
    }
}