GiftAPI/src/main/java/tokarotik/giftapi/cache/CacheManager.java

package tokarotik.giftapi.cache;

import net.minecraft.server.v1_6_R3.EntityPlayer;
import org.bukkit.entity.Player;
import tokarotik.giftapi.NBT.nbt.BasicNBT;
import tokarotik.giftapi.NBT.nbt.WorldNBTSynchronizer;
import tokarotik.giftapi.NBT.pages.PagesManager;

import java.util.Map;

public class CacheManager
{
    private final CacheUtil cacheUtil;
    private final int inventory_slots;

    public CacheManager(int inventory_slots)
    {
        this.inventory_slots = inventory_slots;
        cacheUtil = new CacheUtil(inventory_slots);
    }

    public synchronized PagesManager load(Player player) {
        String playerWorld = player.getWorld().getName();
        Map<Player, PagesManager> worldMap = cacheUtil.getWorlMap(playerWorld);
        EntityPlayer entityPlayer = BasicNBT.getPlayer(player);

        // Return cached PageManager if already loaded
        if (worldMap.containsKey(player)) {
            System.out.print("Is already loaded");
            return worldMap.get(player);
        }

        // Attempt to load from current world
        if (WorldNBTSynchronizer.hasAll(entityPlayer, playerWorld)) {
            System.out.print("Load from current world");
            return this.cacheUtil.loadAndCachePageManager(player, playerWorld, entityPlayer, worldMap);
        }

        // Attempt to load from another world if present
        String alternateWorld = WorldNBTSynchronizer.getWorldWhatHasPlayer(entityPlayer);
        if (alternateWorld != null) {
            System.out.print("Load from another world");
            return this.cacheUtil.loadAndCachePageManager(player, alternateWorld, entityPlayer, worldMap);
        }

        // Fallback to new empty PageManager
        PagesManager defaultPages = new PagesManager(this.inventory_slots);
        worldMap.put(player, defaultPages);

        System.out.print("New empty PageManager");

        return defaultPages;
    }

    public synchronized void save(Player player, PagesManager pagesManager)
    {
        Map<Player, PagesManager> map = this.cacheUtil.getWorlMap(player.getWorld().getName());

        map.put(player, pagesManager);
    }

    public synchronized void disable()
    {
        cacheUtil.saveAllHard();
    }

    public synchronized void playerQuit(Player player)
    {
        this.cacheUtil.saveHard(player);
    }
}