package mineplex.game.clans.items;

import java.util.HashMap;
import java.util.Map;

import mineplex.core.MiniPlugin;
import mineplex.core.account.CoreClientManager;
import mineplex.core.portal.TransferHandler;
import mineplex.core.portal.Commands.SendCommand;
import mineplex.core.portal.Commands.ServerCommand;
import mineplex.game.clans.items.commands.GearCommand;
import mineplex.game.clans.items.generation.Weight;
import mineplex.game.clans.items.generation.WeightSet;
import mineplex.serverdata.Region;
import mineplex.serverdata.commands.ServerCommandManager;
import mineplex.serverdata.commands.TransferCommand;
import mineplex.serverdata.servers.ServerManager;

import org.bukkit.Bukkit;
import org.bukkit.entity.Player;
import org.bukkit.inventory.ItemStack;
import org.bukkit.plugin.java.JavaPlugin;

/**
 * Manages creation and retrieval of associated {@link PlayerGear}s with online players, as well
 * as offering methods for parsing and handling {@link CustomItem}s.
 * @author MrTwiggy
 *
 */
public class GearManager extends MiniPlugin
{
	private static GearManager _instance;			// Singleton instance

	private Map<String, PlayerGear> playerGears;	// Mapping of player names (key) to cached gear set (value).
	private WeightSet<Integer> _attributeWeights;	// Weightings for randomly selecting number of attributes (1, 2, 3)
	private WeightSet<Boolean> _itemWeights;		// Weightings for randomly selecting item type (legendary/rare)
	private WeightSet<Boolean> _gearWeights;		// Weightings for randomly selecting gear type (armour/weapon)
	
	public GearManager(JavaPlugin plugin)
	{
		super("CustomGear", plugin);
		
		_instance = this;
		
		playerGears = new HashMap<String, PlayerGear>();
		_attributeWeights = new WeightSet<Integer>(new Weight<Integer>(3, 3), new Weight<Integer>(20, 2), new Weight<Integer>(77, 1));
		_itemWeights = new WeightSet<Boolean>(new Weight<Boolean>(90, true), new Weight<Boolean>(10, false));
		_itemWeights = new WeightSet<Boolean>(new Weight<Boolean>(50, true), new Weight<Boolean>(50, false));
	}
	
	@Override
	public void addCommands()
	{
		addCommand(new GearCommand(this));
	}
	
	/**
	 * @param player - the player whose {@link PlayerGear} set is to be fetched.
	 * @return the cached or newly instantiated {@link PlayerGear} associated with {@code player}.
	 */
	public PlayerGear getPlayerGear(Player player)
	{
		String playerName = player.getName();
		if (!playerGears.containsKey(playerName))
		{
			PlayerGear gear = new PlayerGear(playerName);
			playerGears.put(playerName, gear);
		}
		
		return playerGears.get(playerName);
	}
	
	public CustomItem generateItem()
	{
		int attributeCount = _attributeWeights.generateRandom();
		boolean isLegendary = _itemWeights.generateRandom();
		boolean isArmour = _gearWeights.generateRandom();
		
		// TODO: Generate custom item randomly using generated values above
		
		return null;
	}
	
	public static CustomItem parseItem(ItemStack item)
	{
		return null;	// TODO: Parse CustomItem from hidden JSON-encoded lore string in item passed in
	}
	
	public static boolean isCustomItem(ItemStack item)
	{
		return parseItem(item) != null;	// TODO: Check for JSON-encoded lore string instead of deserializing?
	}
	
	/**
	 * @return singleton instance of {@link GearManager}.
	 */
	public static GearManager getInstane()
	{
		return _instance;
	}
}