hoeruputils/chests/AdvancedChest.java

package dk.thoerup.bukkit.hoeruputils.chests;


import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.TreeMap;
import java.util.TreeSet;

import org.bukkit.ChatColor;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.OfflinePlayer;
import org.bukkit.Server;
import org.bukkit.World;
import org.bukkit.block.Block;
import org.bukkit.block.Chest;
import org.bukkit.block.DoubleChest;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.block.Action;
import org.bukkit.event.block.BlockBreakEvent;
import org.bukkit.event.block.BlockBurnEvent;
import org.bukkit.event.block.BlockPlaceEvent;
import org.bukkit.event.entity.EntityExplodeEvent;
import org.bukkit.event.inventory.InventoryCloseEvent;
import org.bukkit.event.inventory.InventoryOpenEvent;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.inventory.InventoryHolder;
import org.bukkit.inventory.ItemStack;

import dk.thoerup.bukkit.hoeruputils.HoerupUtilsPlugin;
import dk.thoerup.bukkit.hoeruputils.Util;


public class AdvancedChest  implements Listener, CommandExecutor{

        class ItemCount extends TreeMap<Integer,Integer> {
                private static final long serialVersionUID = 1L;
        };

        HashMap<String, ItemCount> contentMap = new HashMap<String, ItemCount>();


        HashMap<Location,ChestBean> chestMap = new HashMap<Location, ChestBean>();


        HoerupUtilsPlugin plugin;
        Server server;

        public AdvancedChest(HoerupUtilsPlugin plugin, Runnable r) {
                this.plugin = plugin;
                server = plugin.getServer();
                try {
                        loadChests();
                } catch (Exception e) {
                        e.printStackTrace();
                        //r.run();
                        loadChests();
                }
        }


        @Override
        public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
                if (! (sender instanceof Player) ) {
                        sender.sendMessage("this is not a console command!");
                        return true;
                }

                Player player = (Player) sender;

                if (args.length == 0) {
                        player.sendMessage("Usage:");
                        player.sendMessage("/chest (status|lock|snitch|remove|addplayer|removeplayer|setowner|comment) [player]");
                        return true;
                }


                Block b = player.getTargetBlock( (Set<Material>)null, 30);                      
                Material mat = b.getType();
                
                if (mat != Material.CHEST && mat != Material.HOPPER) {
                        player.sendMessage("[Chest] Please look at the chest/hopper you want to protect");
                        return true;
                }

                Location loc = b.getLocation();
                Location loc2 = null;
                if ( mat == Material.HOPPER) { //dont find neighbours for Hoppers
                        loc2 = getNeighborChest(loc); 
                }

                ChestBean chest = chestMap.get(loc);
                String cmd = args[0].toLowerCase();

                if (cmd.equals("status")) {
                        if (chest != null) {                            
                                String mode = "";
                                switch (chest.getChestType()) {
                                case ChestBean.LOCKED:
                                        mode = "locked";
                                        break;
                                case ChestBean.SNITCHING:
                                        mode = "snitching";
                                        break;
                                default:
                                        mode = "unknown ??";
                                }                               

                                player.sendMessage(ChatColor.GREEN + "Chest is  a " + mode + " chest owned by " + chest.getOwner());
                                player.sendMessage(ChatColor.GREEN + "Allowed players: " + chest.getModifyPlayers() );
                                player.sendMessage(ChatColor.GREEN + "Comment: " + chest.getComment() );
                        } else {
                                player.sendMessage(ChatColor.GREEN + "The chest is not protected");
                        }
                        return true;
                }

                if (cmd.equals("lock") || cmd.equals("snitch")) {
                        if (chest == null) {
                                chest = createChest(player.getName(), "", loc);         
                                if (loc2 != null) {
                                        chest.setDoublechest(true);
                                }
                                String modeStr = "";
                                if (cmd.equals("lock")) {
                                        chest.setChestType( ChestBean.LOCKED);
                                        modeStr = "locked";
                                } else {
                                        chest.setChestType( ChestBean.SNITCHING);
                                        modeStr = "snitching";
                                }
                                chest.setModifyPlayers("");
                                chest.setComment("");
                                addChest(loc, chest);
                                player.sendMessage("Chest is now " + modeStr);
                        } else {
                                server.getLogger().info( player.getName() + " tried to protect a chest owned by " + chest.getOwner() );
                                player.sendMessage("This chest is already protected");
                        }
                        return true;
                }

                if (cmd.equals("remove")) {
                        if (chest == null) {
                                player.sendMessage("This chest is not protected");
                                return true;
                        }
                        if ( chest.getOwner().equals( player.getName() ) || player.isOp() ) {
                                //do nothing
                        } else {
                                player.sendMessage("You can not remove lock from a chest you don't own");
                                server.getLogger().info( player.getName() + " tried to remove protection froma chest owned by " + chest.getOwner() );
                                return true;
                        }

                        player.sendMessage("[LockedChest] Removing protection from chest");
                        removeChest(loc);                               

                        return true;
                }

                if (cmd.equals("setowner")) {
                        if (chest == null) {
                                player.sendMessage("This chest is not protected");
                                return true;
                        }
                        if ( chest.getOwner().equals( player.getName() ) || player.isOp() ) {
                                //do nothing
                        } else {
                                player.sendMessage("You can not set new owner of a chest you dont own");
                                server.getLogger().info( player.getName() + " tried to set owner on a chest owned by " + chest.getOwner() );
                                return true;
                        }
                        if (args.length != 2) {
                                player.sendMessage("You need to specify which player should own this chest");
                                return true;
                        } 
                        
                        @SuppressWarnings("deprecation")//user by name is our only option here
                        OfflinePlayer p2 = server.getOfflinePlayer(args[1]);
                        
                        if ( p2.hasPlayedBefore() == false && p2.isOnline() == false) {
                                player.sendMessage("Unknown user: " + args[1] );
                                return true;
                        }
                        chest.setOwner( p2.getName() );
                        plugin.getDatabase().save( chest );
                        player.sendMessage("ok");
                        return true;
                }

                if (cmd.equals("addplayer") || cmd.equals("removeplayer")) {
                        if (chest == null) {
                                player.sendMessage("This chest is not protected");
                                return true;
                        }
                        if (! chest.getOwner().equals( player.getName() ) ) {
                                player.sendMessage("You can not add/remove players from a chest you don't own");
                                server.getLogger().info( player.getName() + " tried to add/remove player on a chest owned by " + chest.getOwner() );
                                return true;
                        }
                        if (args.length != 2) {
                                player.sendMessage("You need to specify which player to add or remove");
                                return true;
                        } 
                        
                        @SuppressWarnings("deprecation")//user by name is our only option here
                        OfflinePlayer p2 = server.getOfflinePlayer(args[1]);
                        if ( p2.hasPlayedBefore() == false && p2.isOnline() == false) {
                                player.sendMessage("Unknown user: " + args[1] );
                                return true;
                        }

                        Set<String> players = Util.stringToSet( chest.getModifyPlayers() );
                        if (cmd.equals("addplayer")) {
                                players.add(p2.getName());
                        } else {
                                players.remove(p2.getName());
                        }

                        chest.setModifyPlayers( Util.setToString(players) );
                        plugin.getDatabase().save( chest );
                        player.sendMessage("ok");
                        return true;
                }
                if (cmd.equals("comment")) {    
                        if (chest == null) {
                                player.sendMessage("This chest is not protected");
                                return true;
                        }
                        if (! chest.getOwner().equals( player.getName() ) ) {                           
                                player.sendMessage("You can not comment a chest you don't own");
                                server.getLogger().info( player.getName() + " tried to comment on a chest owned by " + chest.getOwner() );
                                return true;
                        }

                        StringBuilder sb = new StringBuilder();
                        for (int i=1; i<args.length; i++) {
                                sb.append(args[i]).append(" ");
                        }
                        String comment = sb.toString().trim();

                        chest.setComment( comment );
                        plugin.getDatabase().save( chest );
                        player.sendMessage("Comment set");

                        return true;
                }

                /*
                if (chest != null) {
                        if (chest.getOwner().equals(player.getName())) {
                                player.sendMessage("[LockedChest] Removing lock from chest");
                                removeChest(loc);
                        } else {
                                player.sendMessage("[LockedChest] Chest is already protected");
                        }

                        return true;
                }

                chest = createChest(player.getName(), "", loc);         
                if (loc2 != null) {
                        chest.setDoublechest(true);
                }

                addChest(loc, chest);


                player.sendMessage("[LockedChest] Chest is now locked");
                 */

                player.sendMessage("Unknown argument, " + cmd);

                return true;
        }

        @EventHandler
        public void onBlockBreak(BlockBreakEvent event) {
                Location loc = event.getBlock().getLocation();
                ChestBean chest = chestMap.get(loc);
                if (chest != null) {
                        if (chest.getOwner().equals(event.getPlayer().getName())) {
                                removeChest(loc);
                                event.getPlayer().sendMessage("[AdvancedChest] The destroyed chest was locked or snitching");
                        } else {
                                event.setCancelled(true);
                                event.getPlayer().sendMessage("You can't destroy that chest");
                                server.getLogger().info( "[AdvancedChest] " + event.getPlayer().getName() + " tried breaking a chest owned by " + chest.getOwner() + chest.getCommentString() );
                        }
                }
        }
        public void addChest(Location loc, ChestBean chest) {
                chestMap.put(loc, chest);
                if (chest.isDoublechest()) {
                        Location loc2 = getNeighborChest(loc);
                        chestMap.put(loc2, chest);
                }               
                plugin.getDatabase().save(chest);

                reloadChests();

        }

        void removeChest(Location loc) {
                ChestBean chest = chestMap.remove(loc);
                if (chest != null) {                                                                    
                        if (chest.isDoublechest()){
                                Location loc2 = getNeighborChest(loc);
                                chestMap.remove(loc2);
                        }
                        plugin.getDatabase().delete(chest);
                }
        }

        int loadChestsWorker() {
                List<ChestBean> chestlist = plugin.getDatabase().find( ChestBean.class).findList();
                for (ChestBean chest : chestlist) {
                        Location loc = getChestLocation(server, chest);
                        chestMap.put(loc, chest);       

                        if (chest.isDoublechest()) {
                                Location loc2 = getNeighborChest(loc);
                                chestMap.put(loc2, chest);      
                        }
                }

                return chestlist.size();
        }

        void reloadChests() {           
                chestMap.clear();
                loadChestsWorker();             
        }

        void loadChests() {             
                int count = loadChestsWorker();
                server.getLogger().info("[AdvancedChest] loaded " + count + " chests");
        }


        public ChestBean createChest(String owner, String description, Location loc) {

                ChestBean chest = new ChestBean();
                chest.setOwner(owner);
                chest.setDescription(description);
                setChestLocation(chest, loc);

                return chest;
        }


        public void setChestLocation(ChestBean chest, Location loc) {
                chest.setWorld( loc.getWorld().getName() );
                chest.setX( loc.getBlockX() );
                chest.setY( loc.getBlockY() );
                chest.setZ( loc.getBlockZ() );          
        }

        public Location getChestLocation(Server server, ChestBean chest) {
                World wrld = server.getWorld(chest.getWorld());
                return new Location(wrld,chest.getX(),chest.getY(),chest.getZ());               
        }


        /*
        void saveChests() {

        }*/

        Location getNeighborChest(Location loc) {
                World world = loc.getWorld();

                Location target = new Location(world, loc.getX()+1, loc.getY(), loc.getZ() );
                if (world.getBlockAt(target).getType() == Material.CHEST )
                        return target;

                target = new Location(world, loc.getX()-1, loc.getY(), loc.getZ() );
                if (world.getBlockAt(target).getType() == Material.CHEST )
                        return target;          

                target = new Location(world, loc.getX(), loc.getY(), loc.getZ() +1);
                if (world.getBlockAt(target).getType() == Material.CHEST )
                        return target;                          

                target = new Location(world, loc.getX(), loc.getY(), loc.getZ() -1);
                if (world.getBlockAt(target).getType() == Material.CHEST )
                        return target;                                          

                return null;
        }


        Location getChestLocation(InventoryHolder holder) {
                Location loc;
                if ( holder instanceof Chest) {
                        loc =  ( (Chest)holder).getLocation();
                } else {
                        loc =  ( (DoubleChest)holder).getLocation();
                }

                loc.setX( loc.getBlockX() ); //round to integer, since double chests apparently are placed at pos + 0.5
                loc.setZ( loc.getBlockZ() ); // -- // --

                return loc;
        }

        @EventHandler
        public void onChestPlaced(BlockPlaceEvent event) {
                Block block = event.getBlock();

                if (block.getType() != Material.CHEST) {
                        return;
                }

                Location chestloc = getNeighborChest( block.getLocation() );
                if (chestloc == null)
                        return;

                ChestBean chest = chestMap.get(chestloc);
                
                if (chest == null)//the neighbor is not a locked chest
                        return;
                

                chest.setDoublechest(true);
                addChest(chestloc, chest);


                event.getPlayer().sendMessage( "[AdvancedChest] Chest has been expanded" );
        }


        @EventHandler
        public void onChestExplode(EntityExplodeEvent event) {
                for (Block b : event.blockList() ) {
                        ChestBean chest = chestMap.get( b.getLocation() );
                        if (chest != null) {
                                server.getLogger().info( "[AdvancedChest] Prevented an explosion from destroying chest owned by " + chest.getOwner() +  chest.getCommentString() );
                                event.setCancelled( true );
                                return;
                        }
                }
        }

        @EventHandler
        public void onChestBurn(BlockBurnEvent event) {
                ChestBean chest = chestMap.get( event.getBlock().getLocation() );
                if (chest != null) {
                        server.getLogger().info( "[AdvancedChest] prevented a fire from destrying chest owned by " + chest.getOwner() + chest.getCommentString()  );
                        event.setCancelled( true);
                }
        }

        // prevent a user from opening a chest 
        @EventHandler
        public void onChestInteract(PlayerInteractEvent event) {
                if (event.getAction() == Action.RIGHT_CLICK_BLOCK) {
                        Block b = event.getClickedBlock();

                        if (b.getType() == Material.CHEST) {

                                Location loc = b.getLocation();

                                ChestBean chest = chestMap.get( loc );
                                if (chest == null) {                            
                                        return; //chest not surveyed by this plugin
                                }

                                if (chest.getChestType() != ChestBean.LOCKED ) {
                                        return; //this is not a locked chests
                                }

                                Player player = (Player) event.getPlayer();
                                if (player.getName().equals(chest.getOwner() )) {
                                        return; //chest is opened by it's owner
                                }

                                Set<String> players = chest.getModifyPlayersSet() ;
                                if ( players.contains(player.getName()) ) {
                                        return; //this player is on the whitelist so he may open
                                }


                                server.getLogger().info( "[AdvancedChest] " + event.getPlayer().getName() + " tried opening a chest owned by " + chest.getOwner()  + chest.getCommentString() );
                                player.sendMessage( ChatColor.BLUE +  "Sorry but this chest is locked !");
                                event.setCancelled(true);
                        }
                }               
        }

        @EventHandler
        public void onChestOpen(InventoryOpenEvent event) {

                if (! (event.getPlayer() instanceof Player)) {
                        return;
                }


                InventoryHolder holder = event.getInventory().getHolder(); 
                if (holder instanceof Chest || holder instanceof DoubleChest) {
                        Location loc = getChestLocation(holder);

                        ChestBean chest = chestMap.get( loc );
                        if (chest == null) {                            
                                return; //chest not surveyed by this plugin
                        }

                        if (chest.getChestType() != ChestBean.SNITCHING) {
                                return; // not a snitching chest
                        }


                        Player player = (Player) event.getPlayer();
                        if (player.getName().equals(chest.getOwner() )) {
                                return; //chest is owned by it's own player
                        }

                        Set<String> players = chest.getModifyPlayersSet();
                        if ( players.contains(player.getName()) ) {
                                return; //this player is on the whitelist so he may open
                        }


                        server.getLogger().info( "[AdvancedChest] " + event.getPlayer().getName() + " opened a snitching chest owned by " + chest.getOwner()  + chest.getCommentString()  );

                        ItemCount contents = countItems( event.getInventory().getContents() );                  

                        contentMap.put(player.getName(), contents );
                }
        }

        @EventHandler
        public void onChestClose(InventoryCloseEvent event) {
                if (! (event.getPlayer() instanceof Player)) {
                        return;
                }


                InventoryHolder holder = event.getInventory().getHolder();
                if (holder instanceof Chest || holder instanceof DoubleChest) {
                        Location loc = getChestLocation(holder);
                        ChestBean chest = chestMap.get(loc);

                        if (chest == null) { //chest was not a snitching chest
                                return;
                        }

                        if (chest.getChestType() != ChestBean.SNITCHING) {
                                return; // not a snitching chest
                        }


                        OfflinePlayer owner = server.getOfflinePlayer( chest.getOwner() );


                        Player player = (Player) event.getPlayer();

                        ItemCount savedContent = contentMap.get( player.getName() );

                        if (savedContent == null) {
                                return;
                        }

                        contentMap.remove( player.getName() );

                        ItemCount content = countItems( event.getInventory().getContents() );

                        Set<Integer> combinedKeyset = new TreeSet<Integer>();                   
                        combinedKeyset.addAll( savedContent.keySet() );
                        combinedKeyset.addAll( content.keySet() );

                        for (Integer item : combinedKeyset ) {
                                Integer savedcount = savedContent.get(item);                            
                                Integer count = content.get(item);

                                if (savedcount == null)
                                        savedcount = 0;
                                if (count == null)
                                        count = 0;


                                int diff = Math.abs( savedcount - count);

                                if (diff > 0) {
                                        String material = Material.getMaterial(item).name();
                                        String msg = null;

                                        if (count > savedcount) {
                                                msg = player.getName() + " added "   + diff + " units of " + material + "(" +item + ") to "   + owner.getName() + "'s chest at " + loc.getWorld().getName() + "," + loc.getBlockX() + "," +loc.getBlockY() + "," + loc.getBlockZ() + chest.getCommentString();
                                        } else { //(count < savedcount)
                                                msg = player.getName() + " removed " + diff + " units of " + material + "(" +item + ") from " + owner.getName() + "'s chest at " + loc.getWorld().getName() + "," + loc.getBlockX() + "," +loc.getBlockY() + "," + loc.getBlockZ() + chest.getCommentString();
                                        }


                                        server.getLogger().info( "[AdvancedChest]" + msg);
                                        plugin.getMessageWrapper().sendMessage("system", owner, msg);
                                }

                        }


                }
        }

        ItemCount countItems(ItemStack[] input) {
                ItemCount output = new ItemCount();
                for (int i=0; i<input.length; i++) {
                        ItemStack current = input[i];
                        if (current == null)
                                continue;

                        int type = current.getTypeId();

                        Integer amount = output.get(type);
                        if (amount == null)
                                amount = 0;

                        output.put(type, amount + current.getAmount() );                        
                }
                return output;
        }
        /*
        ItemStack[] cloneItemStacks(ItemStack[] input) {
                ItemStack[] output = new ItemStack[ input.length ];
                for (int i=0; i<input.length; i++) {
                        if (input[i] != null) {
                                output[i] = input[i].clone();
                        } else {
                                output[i] = new ItemStack(0, 0);
                        }
                }
                return output;
        }*/


}