using System;
using System.Collections;


public enum ItemType
{
NONE = 0,

GOD_HAMMER_ELITE = 1000,
DEAVIL_HAMMER = 1001,

SPEAR_OF_FIRE         = 2000,

ARMOR_OF_ANGEL_DEFENCE = 3000,
GOOD_BUCKLER           = 3001,

NECKLACE_OF_FROST = 4000
}

public enum WeaponType
{
    NONE = 0,

    ARMOR = 1,
    SPEAR = 2,
    HAMMER = 3,
    JEWELERY = 4
}


public static class ItemHelper
{
    public static IEnumerable getAllValues()
    {
        return Enum.GetValues(typeof(ItemType));
    }

    public static bool IsWeapon(Item itemType, out Weapon weapon)
    {
        if(itemType is Weapon currentWeapon)
        {
            weapon = currentWeapon;
            return true;
        }

        weapon = null;
        return false;
    }
}

public class Item
{
    protected ItemType itemType;

    protected Item(ItemType type)
    {
        itemType = type;
    }

    public string GetDescription()
    {
        return ItemDescription.GetDescription(itemType);
    }
}

public class Weapon : Item
{
    public Weapon(ItemType type) : base (type)
    {
        itemType = type;
    }

    public WeaponType GetType()
    {
        switch (itemType)
        {
            case ItemType.GOD_HAMMER_ELITE:
            case ItemType.DEAVIL_HAMMER:
                return WeaponType.HAMMER;

            case ItemType.SPEAR_OF_FIRE:
                return WeaponType.SPEAR;

            case ItemType.ARMOR_OF_ANGEL_DEFENCE:
            case ItemType.GOOD_BUCKLER:
                return WeaponType.ARMOR;

            default:
                return WeaponType.NONE;
        }
    }
}

public static class ItemDescription
{
    private const string GOD_HAMMER_ELITE_DESC = "Hand tool consisting of a solid head set crosswise on a handle and used for pounding";
    private const string SPEAR_OF_FIRE_DESC    = "Weapon with a pointed tip, typically of steel, and a long shaft, used for thrusting or throwing.";

    public static string GetDescription(ItemType itemType)
    {
        switch (itemType)
        {
            case ItemType.GOD_HAMMER_ELITE: return GOD_HAMMER_ELITE_DESC;
            case ItemType.SPEAR_OF_FIRE:    return SPEAR_OF_FIRE_DESC;

            default:
                throw new ArgumentOutOfRangeException(nameof(itemType), itemType, null);
        }
    }
}