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Protection.java
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Protection.java
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/**
* This file is part of LWC (https://github.com/Hidendra/LWC)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.griefcraft.model;
import com.griefcraft.cache.CacheSet;
import com.griefcraft.cache.LRUCache;
import com.griefcraft.lwc.LWC;
import com.griefcraft.scripting.event.LWCProtectionRemovePostEvent;
import com.griefcraft.util.Colors;
import com.griefcraft.util.StringUtils;
import org.bukkit.Bukkit;
import org.bukkit.World;
import org.bukkit.block.Block;
import org.bukkit.entity.Player;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import java.util.logging.Logger;
public class Protection {
// re-use LWC logger
@SuppressWarnings("unused")
private Logger logger = Logger.getLogger("LWC");
/**
* All of the history items associated with this protection
*/
private final Set<History> historyCache = new HashSet<History>();
/**
* List of the accessRights rights for the protection
*/
private final Set<AccessRight> accessRights = new HashSet<AccessRight>();
/**
* List of flags enabled on the protection
*/
private final Set<Flag> flags = new HashSet<Flag>();
/**
* The block id
*/
private int blockId;
/**
* The password for the chest
*/
private String password;
/**
* The date created
*/
private String date;
/**
* JSON data for the protection
*/
private final JSONObject data = new JSONObject();
/**
* Unique id (in sql)
*/
private int id;
/**
* The owner of the chest
*/
private String owner;
/**
* The chest type
*/
private int type;
/**
* The world this protection is in
*/
private String world;
/**
* The x coordinate
*/
private int x;
/**
* The y coordinate
*/
private int y;
/**
* The z coordinate
*/
private int z;
/**
* The timestamp of when the protection was last accessed
*/
private long lastAccessed;
/**
* Immutable flag for the protection. When removed, this bool is switched to true and any setters
* will no longer work. However, everything is still intact and in memory at this point (for now.)
*/
private boolean removed = false;
/**
* True when the protection has been modified and should be saved
*/
private boolean modified = false;
/**
* Encode the AccessRights to JSON
*
* @return
*/
public void encodeRights() {
// create the root
JSONArray root = new JSONArray();
// add all of the access rights to the root
for (AccessRight right : accessRights) {
if (right != null) {
root.add(right.encodeToJSON());
}
}
data.put("rights", root);
}
/**
* Encode the protection flags to JSON
*/
public void encodeFlags() {
JSONArray root = new JSONArray();
for (Flag flag : flags) {
if (flag != null) {
root.add(flag.getData());
}
}
data.put("flags", root);
}
/**
* Ensure a history object is located in our cache
*
* @param history
*/
public void checkHistory(History history) {
if(!historyCache.contains(history)) {
historyCache.add(history);
}
}
/**
* Check if a player is the owner of the protection
*
* @param player
* @return
*/
public boolean isOwner(Player player) {
LWC lwc = LWC.getInstance();
return player != null && (owner.equals(player.getName()) || lwc.isAdmin(player));
}
/**
* Create a History object that is attached to this protection
*
* @return
*/
public History createHistoryObject() {
History history = new History();
history.setProtectionId(id);
history.setProtection(this);
history.setStatus(History.Status.INACTIVE);
// add it to the cache
historyCache.add(history);
return history;
}
/**
* @return the related history for this protection, which is immutable
*/
public Set<History> getRelatedHistory() {
// cache the database's history if we don't have any yet
if(historyCache.size() == 0) {
historyCache.addAll(LWC.getInstance().getPhysicalDatabase().loadHistory(this));
}
// now we can return an immutable cache
return Collections.unmodifiableSet(historyCache);
}
/**
* Get the related history for this protection using the given type
*
* @param type
* @return
*/
public List<History> getRelatedHistory(History.Type type) {
List<History> matches = new ArrayList<History>();
Set<History> relatedHistory = getRelatedHistory();
for (History history : relatedHistory) {
if (history.getType() == type) {
matches.add(history);
}
}
return matches;
}
/**
* Check if a flag is enabled
*
* @param type
* @return
*/
public boolean hasFlag(Flag.Type type) {
for (Flag flag : flags) {
if (flag.getType() == type) {
return true;
}
}
return false;
}
/**
* Get the enabled flag for the corresponding type
*
* @param type
* @return
*/
public Flag getFlag(Flag.Type type) {
for (Flag flag : flags) {
if (flag.getType() == type) {
return flag;
}
}
return null;
}
/**
* Add a flag to the protection
*
* @param flag
* @return
*/
public boolean addFlag(Flag flag) {
if (removed || flag == null) {
return false;
}
if (!flags.contains(flag)) {
flags.add(flag);
modified = true;
return true;
}
return false;
}
/**
* Remove a flag from the protection
* TODO: redo? :s
*
* @param flag
* @return
*/
public void removeFlag(Flag flag) {
if (removed) {
return;
}
flags.remove(flag);
this.modified = true;
}
/**
* Check if the entity + accessRights type exists, and if so return the rights (-1 if it does not exist)
*
* @param type
* @param name
* @return the accessRights the player has
*/
public int getAccess(int type, String name) {
for (AccessRight right : accessRights) {
if (right.getType() == type && right.getName().equalsIgnoreCase(name)) {
return right.getRights();
}
}
return -1;
}
/**
* @return the list of access rights
*/
public List<AccessRight> getAccessRights() {
return Collections.unmodifiableList(new ArrayList<AccessRight>(accessRights));
}
/**
* Remove temporary accessRights rights from the protection
*/
public void removeTemporaryAccessRights() {
removeAccessRightsMatching("*", AccessRight.TEMPORARY);
}
/**
* Add an accessRights right to the stored list
*
* @param right
*/
public void addAccessRight(AccessRight right) {
if (removed || right == null) {
return;
}
// remove any other rights with the same identity
removeAccessRightsMatching(right.getName(), right.getType());
// now we can safely add it
accessRights.add(right);
modified = true;
}
/**
* Remove access rights from the protection that match an entity AND type
*
* @param entity
* @param type
*/
public void removeAccessRightsMatching(String entity, int type) {
if (removed) {
return;
}
Iterator<AccessRight> iter = accessRights.iterator();
while(iter.hasNext()) {
AccessRight right = iter.next();
if((right.getName().equals(entity) || entity.equals("*")) && right.getType() == type) {
iter.remove();
modified = true;
}
}
}
public JSONObject getData() {
return data;
}
public int getBlockId() {
return blockId;
}
public String getPassword() {
return password;
}
public String getDate() {
return date;
}
public int getId() {
return id;
}
public String getOwner() {
return owner;
}
public int getType() {
return type;
}
public String getWorld() {
return world;
}
public int getX() {
return x;
}
public int getY() {
return y;
}
public int getZ() {
return z;
}
public long getLastAccessed() {
return lastAccessed;
}
public void setBlockId(int blockId) {
if (removed) {
return;
}
this.blockId = blockId;
this.modified = true;
}
public void setPassword(String password) {
if (removed) {
return;
}
this.password = password;
this.modified = true;
}
public void setDate(String date) {
if (removed) {
return;
}
this.date = date;
this.modified = true;
}
public void setId(int id) {
if (removed) {
return;
}
this.id = id;
this.modified = true;
}
public void setOwner(String owner) {
if (removed) {
return;
}
this.owner = owner;
this.modified = true;
}
public void setType(int type) {
if (removed) {
return;
}
this.type = type;
this.modified = true;
}
public void setWorld(String world) {
if (removed) {
return;
}
this.world = world;
this.modified = true;
}
public void setX(int x) {
if (removed) {
return;
}
this.x = x;
this.modified = true;
}
public void setY(int y) {
if (removed) {
return;
}
this.y = y;
this.modified = true;
}
public void setZ(int z) {
if (removed) {
return;
}
this.z = z;
this.modified = true;
}
public void setLastAccessed(long lastAccessed) {
if (removed) {
return;
}
this.lastAccessed = lastAccessed;
this.modified = true;
}
/**
* Remove the protection from the database
*/
public void remove() {
if (removed) {
return;
}
LWC lwc = LWC.getInstance();
removeTemporaryAccessRights();
// we're removing it, so assume there are no changes
modified = false;
// broadcast the removal event
// we broadcast before actually removing to give them a chance to use any password that would be removed otherwise
lwc.getModuleLoader().dispatchEvent(new LWCProtectionRemovePostEvent(this));
// mark related transactions as inactive
for (History history : getRelatedHistory(History.Type.TRANSACTION)) {
if (history.getStatus() != History.Status.ACTIVE) {
continue;
}
history.setStatus(History.Status.INACTIVE);
}
// now perform final saving to ensure all history objects are saved immediately
saveNow();
// make the protection immutable
removed = true;
// and now finally remove it from the database
lwc.getUpdateThread().unqueueProtectionUpdate(this);
lwc.getPhysicalDatabase().unregisterProtection(id);
removeCache();
}
/**
* Remove the protection from cache
*/
public void removeCache() {
LWC lwc = LWC.getInstance();
LRUCache<String, Protection> cache = lwc.getCaches().getProtections();
cache.remove(getCacheKey());
/* For Bug 656 workaround we record in-memory any double-chests/etc we find as
* we find them, since we can't count on Bukkit to reliably return that info later.
* As a result, when we are removing a protection (and therefore LWC calls this method
* to remove it's cache object), we need to remove the adjacent block from memory also.
*/
if (lwc.isBug656WorkAround()) {
World worldObject = lwc.getPlugin().getServer().getWorld(world);
List<Block> blocks = lwc.getRelatedBlocks(worldObject, x, y, z);
for (Block b : blocks) {
String cacheKey = b.getWorld().getName() + ":" + b.getX() + ":" + b.getY() + ":" + b.getZ();
cache.remove(cacheKey);
}
}
}
/**
* Updates the protection in the protection cache
* Note that save() and saveNow() call this
*/
public void update() {
if (removed) {
return;
}
CacheSet caches = LWC.getInstance().getCaches();
removeCache();
Protection temp = LWC.getInstance().getPhysicalDatabase().loadProtection(id);
if (temp != null) {
caches.getProtections().put(getCacheKey(), temp);
}
}
/**
* Queue the protection to be saved
*/
public void save() {
if (removed) {
return;
}
LWC.getInstance().getCaches().getProtections().put(getCacheKey(), this);
LWC.getInstance().getUpdateThread().queueProtectionUpdate(this);
}
/**
* Force a protection update to the live database
*/
public void saveNow() {
if (removed) {
return;
}
// encode JSON objects
encodeRights();
encodeFlags();
// only save the protection if it was modified
if(modified) {
LWC.getInstance().getPhysicalDatabase().saveProtection(this);
update();
}
// check the cache for history updates
for(History history : historyCache) {
// if the history object was modified we need to save it
if(history.wasModified()) {
history.saveNow();
}
}
}
/**
* @return the key used for the protection cache
*/
public String getCacheKey() {
return world + ":" + x + ":" + y + ":" + z;
}
/**
* @return the Bukkit world the protection should be located in
*/
public World getBukkitWorld() {
if (world == null || world.isEmpty()) {
return Bukkit.getServer().getWorlds().get(0);
}
return Bukkit.getServer().getWorld(world);
}
/**
* @return the Bukkit Player object of the owner
*/
public Player getBukkitOwner() {
return Bukkit.getServer().getPlayer(owner);
}
/**
* @return the block representing the protection in the world
*/
public Block getBlock() {
World world = getBukkitWorld();
if (world == null) {
return null;
}
return world.getBlockAt(x, y, z);
}
/**
* @return
*/
@Override
public String toString() {
// format the flags prettily
String flagStr = "";
for (Flag flag : flags) {
flagStr += flag.toString() + ",";
}
if (flagStr.endsWith(",")) {
flagStr = flagStr.substring(0, flagStr.length() - 1);
}
// format the last accessed time
String lastAccessed = StringUtils.timeToString((System.currentTimeMillis() / 1000L) - this.lastAccessed);
if (!lastAccessed.equals("Not yet known")) {
lastAccessed += " ago";
}
return String.format("%s %s" + Colors.White + " " + Colors.Green + "Id=%d Owner=%s Location=[%s %d,%d,%d] Created=%s Flags=%s LastAccessed=%s", typeToString(), (blockId > 0 ? (LWC.materialToString(blockId)) : "Not yet cached"), id, owner, world, x, y, z, date, flagStr, lastAccessed);
}
/**
* @return string representation of the protection type
*/
public String typeToString() {
switch (type) {
case ProtectionTypes.PRIVATE:
return "Private";
case ProtectionTypes.PUBLIC:
return "Public";
case ProtectionTypes.PASSWORD:
return "Password";
case ProtectionTypes.TRAP_KICK:
return "Kick trap";
case ProtectionTypes.TRAP_BAN:
return "Ban trap";
}
return "Unknown(raw:" + type + ")";
}
}