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package org.bukkit.inventory;
import com.google.common.collect.ImmutableMap;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;
import org.bukkit.Material;
import org.bukkit.configuration.serialization.ConfigurationSerializable;
import org.bukkit.enchantments.Enchantment;
import org.bukkit.material.MaterialData;
/**
* Represents a stack of items
*/
public class ItemStack implements ConfigurationSerializable {
private int type;
private int amount = 0;
private MaterialData data = null;
private short durability = 0;
private Map<Enchantment, Integer> enchantments = new HashMap<Enchantment, Integer>();
public ItemStack(final int type) {
this(type, 0);
}
public ItemStack(final Material type) {
this(type, 0);
}
public ItemStack(final int type, final int amount) {
this(type, amount, (short) 0);
}
public ItemStack(final Material type, final int amount) {
this(type.getId(), amount);
}
public ItemStack(final int type, final int amount, final short damage) {
this(type, amount, damage, null);
}
public ItemStack(final Material type, final int amount, final short damage) {
this(type.getId(), amount, damage);
}
public ItemStack(final int type, final int amount, final short damage, final Byte data) {
this.type = type;
this.amount = amount;
this.durability = damage;
if (data != null) {
createData(data);
this.durability = data;
}
}
public ItemStack(final Material type, final int amount, final short damage, final Byte data) {
this(type.getId(), amount, damage, data);
}
/**
* Gets the type of this item
*
* @return Type of the items in this stack
*/
public Material getType() {
return Material.getMaterial(type);
}
/**
* Sets the type of this item<br />
* <br />
* Note that in doing so you will reset the MaterialData for this stack
*
* @param type New type to set the items in this stack to
*/
public void setType(Material type) {
setTypeId(type.getId());
}
/**
* Gets the type id of this item
*
* @return Type Id of the items in this stack
*/
public int getTypeId() {
return type;
}
/**
* Sets the type id of this item<br />
* <br />
* Note that in doing so you will reset the MaterialData for this stack
*
* @param type New type id to set the items in this stack to
*/
public void setTypeId(int type) {
this.type = type;
createData((byte) 0);
}
/**
* Gets the amount of items in this stack
*
* @return Amount of items in this stick
*/
public int getAmount() {
return amount;
}
/**
* Sets the amount of items in this stack
*
* @param amount New amount of items in this stack
*/
public void setAmount(int amount) {
this.amount = amount;
}
/**
* Gets the MaterialData for this stack of items
*
* @return MaterialData for this item
*/
public MaterialData getData() {
Material mat = Material.getMaterial(getTypeId());
if (mat != null && mat.getData() != null) {
data = mat.getNewData((byte) this.durability);
}
return data;
}
/**
* Sets the MaterialData for this stack of items
*
* @param data New MaterialData for this item
*/
public void setData(MaterialData data) {
Material mat = getType();
if ((mat == null) || (mat.getData() == null)) {
this.data = data;
} else {
if ((data.getClass() == mat.getData()) || (data.getClass() == MaterialData.class)) {
this.data = data;
} else {
throw new IllegalArgumentException("Provided data is not of type " + mat.getData().getName() + ", found " + data.getClass().getName());
}
}
}
/**
* Sets the durability of this item
*
* @param durability Durability of this item
*/
public void setDurability(final short durability) {
this.durability = durability;
}
/**
* Gets the durability of this item
*
* @return Durability of this item
*/
public short getDurability() {
return durability;
}
/**
* Get the maximum stacksize for the material hold in this ItemStack
* Returns -1 if it has no idea.
*
* @return The maximum you can stack this material to.
*/
public int getMaxStackSize() {
Material material = getType();
if (material != null) {
return material.getMaxStackSize();
}
return -1;
}
private void createData(final byte data) {
Material mat = Material.getMaterial(type);
if (mat == null) {
this.data = new MaterialData(type, data);
} else {
this.data = mat.getNewData(data);
}
}
@Override
public String toString() {
return "ItemStack{" + getType().name() + " x " + getAmount() + "}";
}
@Override
public boolean equals(Object obj) {
if (!(obj instanceof ItemStack)) {
return false;
}
ItemStack item = (ItemStack) obj;
return item.getAmount() == getAmount() && item.getTypeId() == getTypeId() && getDurability() == item.getDurability() && getEnchantments().equals(item.getEnchantments());
}
@Override
public ItemStack clone() {
ItemStack result = new ItemStack(type, amount, durability);
result.addEnchantments(getEnchantments());
return result;
}
@Override
public int hashCode() {
int hash = 11;
hash = hash * 19 + 7 * getTypeId(); // Overriding hashCode since equals is overridden, it's just
hash = hash * 7 + 23 * getAmount(); // too bad these are mutable values... Q_Q
return hash;
}
/**
* Checks if this ItemStack contains the given {@link Enchantment}
*
* @param ench Enchantment to test
* @return True if this has the given enchantment
*/
public boolean containsEnchantment(Enchantment ench) {
return enchantments.containsKey(ench);
}
/**
* Gets the level of the specified enchantment on this item stack
*
* @param ench Enchantment to check
* @return Level of the enchantment, or 0
*/
public int getEnchantmentLevel(Enchantment ench) {
return enchantments.get(ench);
}
/**
* Gets a map containing all enchantments and their levels on this item.
*
* @return Map of enchantments.
*/
public Map<Enchantment, Integer> getEnchantments() {
return ImmutableMap.copyOf(enchantments);
}
/**
* Adds the specified enchantments to this item stack.
* <p>
* This method is the same as calling {@link #addEnchantment(org.bukkit.enchantments.Enchantment, int)}
* for each element of the map.
*
* @param enchantments Enchantments to add
*/
public void addEnchantments(Map<Enchantment, Integer> enchantments) {
for (Map.Entry<Enchantment, Integer> entry : enchantments.entrySet()) {
addEnchantment(entry.getKey(), entry.getValue());
}
}
/**
* Adds the specified {@link Enchantment} to this item stack.
* <p>
* If this item stack already contained the given enchantment (at any level), it will be replaced.
*
* @param ench Enchantment to add
* @param level Level of the enchantment
*/
public void addEnchantment(Enchantment ench, int level) {
if ((level < ench.getStartLevel()) || (level > ench.getMaxLevel())) {
throw new IllegalArgumentException("Enchantment level is either too low or too high (given " + level + ", bounds are " + ench.getStartLevel() + " to " + ench.getMaxLevel());
} else if (!ench.canEnchantItem(this)) {
throw new IllegalArgumentException("Specified enchantment cannot be applied to this itemstack");
}
addUnsafeEnchantment(ench, level);
}
/**
* Adds the specified enchantments to this item stack in an unsafe manner.
* <p>
* This method is the same as calling {@link #addUnsafeEnchantment(org.bukkit.enchantments.Enchantment, int)}
* for each element of the map.
*
* @param enchantments Enchantments to add
*/
public void addUnsafeEnchantments(Map<Enchantment, Integer> enchantments) {
for (Map.Entry<Enchantment, Integer> entry : enchantments.entrySet()) {
addUnsafeEnchantment(entry.getKey(), entry.getValue());
}
}
/**
* Adds the specified {@link Enchantment} to this item stack.
* <p>
* If this item stack already contained the given enchantment (at any level), it will be replaced.
* <p>
* This method is unsafe and will ignore level restrictions or item type. Use at your own
* discretion.
*
* @param ench Enchantment to add
* @param level Level of the enchantment
*/
public void addUnsafeEnchantment(Enchantment ench, int level) {
enchantments.put(ench, level);
}
/**
* Removes the specified {@link Enchantment} if it exists on this item stack
*
* @param ench Enchantment to remove
* @return Previous level, or 0
*/
public int removeEnchantment(Enchantment ench) {
Integer previous = enchantments.remove(ench);
return (previous == null) ? 0 : previous;
}
public Map<String, Object> serialize() {
Map<String, Object> result = new LinkedHashMap<String, Object>();
result.put("type", getType());
if (durability != 0) {
result.put("damage", durability);
}
if (amount != 1) {
result.put("amount", amount);
}
Map<Enchantment, Integer> enchants = getEnchantments();
if (enchants.size() > 0) {
Map<String, Integer> safeEnchants = new HashMap<String, Integer>();
for (Map.Entry<Enchantment, Integer> entry : enchants.entrySet()) {
safeEnchants.put(entry.getKey().getName(), entry.getValue());
}
result.put("enchantments", safeEnchants);
}
return result;
}
public static ItemStack deserialize(Map<String, Object> args) {
Material type = Material.getMaterial((String) args.get("type"));
short damage = 0;
int amount = 1;
if (args.containsKey("damage")) {
damage = (Short) args.get("damage");
}
if (args.containsKey("amount")) {
amount = (Integer) args.get("amount");
}
ItemStack result = new ItemStack(type, amount, damage);
if (args.containsKey("enchantments")) {
Object raw = args.get("enchantments");
if (raw instanceof Map) {
@SuppressWarnings("unchecked")
Map<Object, Object> map = (Map<Object, Object>) raw;
for (Map.Entry<Object, Object> entry : map.entrySet()) {
Enchantment enchantment = Enchantment.getByName(entry.getKey().toString());
if ((enchantment != null) && (entry.getValue() instanceof Integer)) {
result.addEnchantment(enchantment, (Integer) entry.getValue());
}
}
}
}
return result;
}
}
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