package appeng.tile.misc;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.EnumSet;
import java.util.List;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.IInventory;
import net.minecraft.item.ItemStack;
import net.minecraftforge.common.ForgeDirection;
import appeng.api.AEApi;
import appeng.api.config.Actionable;
import appeng.api.config.PowerMultiplier;
import appeng.api.config.PowerUnits;
import appeng.api.implementations.IAEItemPowerStorage;
import appeng.api.implementations.ICrankable;
import appeng.api.storage.data.IAEItemStack;
import appeng.api.util.AECableType;
import appeng.me.GridAccessException;
import appeng.server.AccessType;
import appeng.server.Security;
import appeng.tile.events.AETileEventHandler;
import appeng.tile.events.TileEventType;
import appeng.tile.grid.AENetworkPowerTile;
import appeng.tile.inventory.AppEngInternalInventory;
import appeng.tile.inventory.InvOperation;
import appeng.util.Platform;
import appeng.util.item.AEItemStack;

public class TileCharger extends AENetworkPowerTile implements ICrankable
{

	final int sides[] = new int[] { 0 };
	AppEngInternalInventory inv = new AppEngInternalInventory( this, 1 );
	int tickTickTimer = 0;

	int lastUpdate = 0;
	boolean requiresUpdate = false;

	@Override
	public AECableType getCableConnectionType(ForgeDirection dir)
	{
		return AECableType.COVERED;
	}

	private class TileChargerHandler extends AETileEventHandler
	{

		public TileChargerHandler() {
			super( EnumSet.of( TileEventType.TICK, TileEventType.NETWORK ) );
		}

		@Override
		public boolean readFromStream(DataInputStream data) throws IOException
		{
			try
			{
				IAEItemStack item = AEItemStack.loadItemStackFromPacket( data );
				ItemStack is = item.getItemStack();
				inv.setInventorySlotContents( 0, is );
			}
			catch (Throwable t)
			{
				inv.setInventorySlotContents( 0, null );
			}
			return false; // TESR dosn't need updates!
		}

		@Override
		public void writeToStream(DataOutputStream data) throws IOException
		{
			AEItemStack is = AEItemStack.create( getStackInSlot( 0 ) );
			if ( is != null )
				is.writeToPacket( data );
		}

		@Override
		public void Tick()
		{
			if ( lastUpdate > 60 && requiresUpdate )
			{
				requiresUpdate = false;
				markForUpdate();
				lastUpdate = 0;
			}
			lastUpdate++;

			tickTickTimer++;
			if ( tickTickTimer < 20 )
				return;
			tickTickTimer = 0;

			ItemStack myItem = getStackInSlot( 0 );

			// charge from the network!
			if ( internalCurrentPower < 1499 )
			{
				try
				{
					injectExternalPower( PowerUnits.AE,
							gridProxy.getEnergy().extractAEPower( Math.min( 150.0, 1500.0 - internalCurrentPower ), Actionable.MODULATE, PowerMultiplier.ONE ) );
					tickTickTimer = 20; // keep tickin...
				}
				catch (GridAccessException e)
				{
					// continue!
				}
			}

			if ( myItem == null )
				return;

			if ( internalCurrentPower > 149 && Platform.isChargeable( myItem ) )
			{
				IAEItemPowerStorage ps = (IAEItemPowerStorage) myItem.getItem();
				if ( ps.getAEMaxPower( myItem ) > ps.getAECurrentPower( myItem ) )
				{
					double oldPower = internalCurrentPower;

					double adjustment = ps.injectAEPower( myItem, extractAEPower( 150.0, Actionable.MODULATE, PowerMultiplier.CONFIG ) );
					internalCurrentPower += adjustment;
					if ( oldPower > internalCurrentPower )
						requiresUpdate = true;
					tickTickTimer = 20; // keep tickin...
				}
			}
			else if ( internalCurrentPower > 1499 && AEApi.instance().materials().materialCertusQuartzCrystal.sameAs( myItem ) )
			{
				if ( Platform.getRandomFloat() > 0.8f ) // simulate wait
				{
					extractAEPower( internalMaxPower, Actionable.MODULATE, PowerMultiplier.CONFIG );// 1500
					setInventorySlotContents( 0, AEApi.instance().materials().materialCertusQuartzCrystalCharged.stack( myItem.stackSize ) );
				}
			}
		}

	};

	public TileCharger() {
		gridProxy.setValidSides( EnumSet.noneOf( ForgeDirection.class ) );
		internalMaxPower = 1500;
		gridProxy.setIdlePowerUsage( 0 );
		addNewHandler( new TileChargerHandler() );
	}

	@Override
	public void setOrientation(ForgeDirection inForward, ForgeDirection inUp)
	{
		super.setOrientation( inForward, inUp );
		gridProxy.setValidSides( EnumSet.of( getUp(), getUp().getOpposite() ) );
		setPowerSides( EnumSet.of( getUp(), getUp().getOpposite() ) );
	}

	@Override
	public boolean canTurn()
	{
		return internalCurrentPower < internalMaxPower;
	}

	@Override
	public void applyTurn()
	{
		injectExternalPower( PowerUnits.AE, 150 );

		ItemStack myItem = getStackInSlot( 0 );
		if ( internalCurrentPower > 1499 && AEApi.instance().materials().materialCertusQuartzCrystal.sameAs( myItem ) )
		{
			extractAEPower( internalMaxPower, Actionable.MODULATE, PowerMultiplier.CONFIG );// 1500
			setInventorySlotContents( 0, AEApi.instance().materials().materialCertusQuartzCrystalCharged.stack( myItem.stackSize ) );
		}
	}

	@Override
	public boolean canCrankAttach(ForgeDirection directionToCrank)
	{
		return getUp().equals( directionToCrank ) || getUp().getOpposite().equals( directionToCrank );
	}

	@Override
	public IInventory getInternalInventory()
	{
		return inv;
	}

	@Override
	public void onChangeInventory(IInventory inv, int slot, InvOperation mc, ItemStack removed, ItemStack added)
	{
		markForUpdate();
	}

	@Override
	public int[] getAccessibleSlotsFromSide(int side)
	{
		return sides;
	}

	@Override
	public int getInventoryStackLimit()
	{
		return 1;
	}

	@Override
	public boolean isItemValidForSlot(int i, ItemStack itemstack)
	{
		return Platform.isChargeable( itemstack ) || AEApi.instance().materials().materialCertusQuartzCrystal.sameAs( itemstack );
	}

	@Override
	public boolean canExtractItem(int i, ItemStack itemstack, int j)
	{
		if ( Platform.isChargeable( itemstack ) )
		{
			IAEItemPowerStorage ips = (IAEItemPowerStorage) itemstack.getItem();
			if ( ips.getAECurrentPower( itemstack ) >= ips.getAEMaxPower( itemstack ) )
				return true;
		}

		return AEApi.instance().materials().materialCertusQuartzCrystalCharged.sameAs( itemstack );
	}

	public void activate(EntityPlayer player)
	{
		if ( !Security.hasPermissions( this, player, AccessType.BLOCK_ACCESS ) )
			return;

		ItemStack myItem = getStackInSlot( 0 );
		if ( myItem == null )
		{
			ItemStack held = player.inventory.getCurrentItem();
			if ( AEApi.instance().materials().materialCertusQuartzCrystal.sameAs( held ) || Platform.isChargeable( held ) )
			{
				held = player.inventory.decrStackSize( player.inventory.currentItem, 1 );
				setInventorySlotContents( 0, held );
			}
		}
		else
		{
			List<ItemStack> drops = new ArrayList();
			drops.add( myItem );
			setInventorySlotContents( 0, null );
			Platform.spawnDrops( worldObj, xCoord + getForward().offsetX, yCoord + getForward().offsetY, zCoord + getForward().offsetZ, drops );
		}
	}

}