package net.minecraft.block;

import java.util.Random;
import net.minecraft.block.material.Material;
import net.minecraft.block.properties.IProperty;
import net.minecraft.block.properties.PropertyBool;
import net.minecraft.block.properties.PropertyDirection;
import net.minecraft.block.state.BlockStateContainer;
import net.minecraft.block.state.IBlockState;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.dispenser.BehaviorDefaultDispenseItem;
import net.minecraft.dispenser.IBehaviorDispenseItem;
import net.minecraft.dispenser.IBlockSource;
import net.minecraft.dispenser.IPosition;
import net.minecraft.dispenser.PositionImpl;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.InventoryHelper;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.stats.StatList;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.tileentity.TileEntityDispenser;
import net.minecraft.tileentity.TileEntityDropper;
import net.minecraft.util.EnumBlockRenderType;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.EnumHand;
import net.minecraft.util.Mirror;
import net.minecraft.util.Rotation;
import net.minecraft.util.math.BlockPos;
import net.minecraft.util.registry.RegistryDefaulted;
import net.minecraft.world.World;

public class BlockDispenser extends BlockContainer
{
    public static final PropertyDirection FACING = BlockDirectional.FACING;
    public static final PropertyBool TRIGGERED = PropertyBool.create("triggered");
    /** Registry for all dispense behaviors. */
    public static final RegistryDefaulted<Item, IBehaviorDispenseItem> DISPENSE_BEHAVIOR_REGISTRY = new RegistryDefaulted<Item, IBehaviorDispenseItem>(new BehaviorDefaultDispenseItem());
    protected Random rand = new Random();

    protected BlockDispenser()
    {
        super(Material.ROCK);
        this.setDefaultState(this.blockState.getBaseState().withProperty(FACING, EnumFacing.NORTH).withProperty(TRIGGERED, Boolean.valueOf(false)));
        this.setCreativeTab(CreativeTabs.REDSTONE);
    }

    /**
     * How many world ticks before ticking
     */
    public int tickRate(World worldIn)
    {
        return 4;
    }

    /**
     * Called after the block is set in the Chunk data, but before the Tile Entity is set
     */
    public void onBlockAdded(World worldIn, BlockPos pos, IBlockState state)
    {
        super.onBlockAdded(worldIn, pos, state);
        this.setDefaultDirection(worldIn, pos, state);
    }

    private void setDefaultDirection(World worldIn, BlockPos pos, IBlockState state)
    {
        if (!worldIn.isRemote)
        {
            EnumFacing enumfacing = (EnumFacing)state.getValue(FACING);
            boolean flag = worldIn.getBlockState(pos.north()).isFullBlock();
            boolean flag1 = worldIn.getBlockState(pos.south()).isFullBlock();

            if (enumfacing == EnumFacing.NORTH && flag && !flag1)
            {
                enumfacing = EnumFacing.SOUTH;
            }
            else if (enumfacing == EnumFacing.SOUTH && flag1 && !flag)
            {
                enumfacing = EnumFacing.NORTH;
            }
            else
            {
                boolean flag2 = worldIn.getBlockState(pos.west()).isFullBlock();
                boolean flag3 = worldIn.getBlockState(pos.east()).isFullBlock();

                if (enumfacing == EnumFacing.WEST && flag2 && !flag3)
                {
                    enumfacing = EnumFacing.EAST;
                }
                else if (enumfacing == EnumFacing.EAST && flag3 && !flag2)
                {
                    enumfacing = EnumFacing.WEST;
                }
            }

            worldIn.setBlockState(pos, state.withProperty(FACING, enumfacing).withProperty(TRIGGERED, Boolean.valueOf(false)), 2);
        }
    }

    /**
     * Called when the block is right clicked by a player.
     */
    public boolean onBlockActivated(World worldIn, BlockPos pos, IBlockState state, EntityPlayer playerIn, EnumHand hand, EnumFacing facing, float hitX, float hitY, float hitZ)
    {
        if (worldIn.isRemote)
        {
            return true;
        }
        else
        {
            TileEntity tileentity = worldIn.getTileEntity(pos);

            if (tileentity instanceof TileEntityDispenser)
            {
                playerIn.displayGUIChest((TileEntityDispenser)tileentity);

                if (tileentity instanceof TileEntityDropper)
                {
                    playerIn.addStat(StatList.DROPPER_INSPECTED);
                }
                else
                {
                    playerIn.addStat(StatList.DISPENSER_INSPECTED);
                }
            }

            return true;
        }
    }

    protected void dispense(World worldIn, BlockPos pos)
    {
        BlockSourceImpl blocksourceimpl = new BlockSourceImpl(worldIn, pos);
        TileEntityDispenser tileentitydispenser = (TileEntityDispenser)blocksourceimpl.getBlockTileEntity();

        if (tileentitydispenser != null)
        {
            int i = tileentitydispenser.getDispenseSlot();

            if (i < 0)
            {
                worldIn.playEvent(1001, pos, 0);
            }
            else
            {
                ItemStack itemstack = tileentitydispenser.getStackInSlot(i);
                IBehaviorDispenseItem ibehaviordispenseitem = this.getBehavior(itemstack);

                if (ibehaviordispenseitem != IBehaviorDispenseItem.DEFAULT_BEHAVIOR)
                {
                    tileentitydispenser.setInventorySlotContents(i, ibehaviordispenseitem.dispense(blocksourceimpl, itemstack));
                }
            }
        }
    }

    protected IBehaviorDispenseItem getBehavior(ItemStack stack)
    {
        return DISPENSE_BEHAVIOR_REGISTRY.getObject(stack.getItem());
    }

    /**
     * Called when a neighboring block was changed and marks that this state should perform any checks during a neighbor
     * change. Cases may include when redstone power is updated, cactus blocks popping off due to a neighboring solid
     * block, etc.
     */
    public void neighborChanged(IBlockState state, World worldIn, BlockPos pos, Block blockIn, BlockPos fromPos)
    {
        boolean flag = worldIn.isBlockPowered(pos) || worldIn.isBlockPowered(pos.up());
        boolean flag1 = ((Boolean)state.getValue(TRIGGERED)).booleanValue();

        if (flag && !flag1)
        {
            worldIn.scheduleUpdate(pos, this, this.tickRate(worldIn));
            worldIn.setBlockState(pos, state.withProperty(TRIGGERED, Boolean.valueOf(true)), 4);
        }
        else if (!flag && flag1)
        {
            worldIn.setBlockState(pos, state.withProperty(TRIGGERED, Boolean.valueOf(false)), 4);
        }
    }

    public void updateTick(World worldIn, BlockPos pos, IBlockState state, Random rand)
    {
        if (!worldIn.isRemote)
        {
            this.dispense(worldIn, pos);
        }
    }

    /**
     * Returns a new instance of a block's tile entity class. Called on placing the block.
     */
    public TileEntity createNewTileEntity(World worldIn, int meta)
    {
        return new TileEntityDispenser();
    }

    /**
     * Called by ItemBlocks just before a block is actually set in the world, to allow for adjustments to the
     * IBlockstate
     */
    public IBlockState getStateForPlacement(World worldIn, BlockPos pos, EnumFacing facing, float hitX, float hitY, float hitZ, int meta, EntityLivingBase placer)
    {
        return this.getDefaultState().withProperty(FACING, EnumFacing.getDirectionFromEntityLiving(pos, placer)).withProperty(TRIGGERED, Boolean.valueOf(false));
    }

    /**
     * Called by ItemBlocks after a block is set in the world, to allow post-place logic
     */
    public void onBlockPlacedBy(World worldIn, BlockPos pos, IBlockState state, EntityLivingBase placer, ItemStack stack)
    {
        worldIn.setBlockState(pos, state.withProperty(FACING, EnumFacing.getDirectionFromEntityLiving(pos, placer)), 2);

        if (stack.hasDisplayName())
        {
            TileEntity tileentity = worldIn.getTileEntity(pos);

            if (tileentity instanceof TileEntityDispenser)
            {
                ((TileEntityDispenser)tileentity).setCustomName(stack.getDisplayName());
            }
        }
    }

    /**
     * Called serverside after this block is replaced with another in Chunk, but before the Tile Entity is updated
     */
    public void breakBlock(World worldIn, BlockPos pos, IBlockState state)
    {
        TileEntity tileentity = worldIn.getTileEntity(pos);

        if (tileentity instanceof TileEntityDispenser)
        {
            InventoryHelper.dropInventoryItems(worldIn, pos, (TileEntityDispenser)tileentity);
            worldIn.updateComparatorOutputLevel(pos, this);
        }

        super.breakBlock(worldIn, pos, state);
    }

    /**
     * Get the position where the dispenser at the given Coordinates should dispense to.
     */
    public static IPosition getDispensePosition(IBlockSource coords)
    {
        EnumFacing enumfacing = (EnumFacing)coords.getBlockState().getValue(FACING);
        double d0 = coords.getX() + 0.7D * (double)enumfacing.getFrontOffsetX();
        double d1 = coords.getY() + 0.7D * (double)enumfacing.getFrontOffsetY();
        double d2 = coords.getZ() + 0.7D * (double)enumfacing.getFrontOffsetZ();
        return new PositionImpl(d0, d1, d2);
    }

    public boolean hasComparatorInputOverride(IBlockState state)
    {
        return true;
    }

    public int getComparatorInputOverride(IBlockState blockState, World worldIn, BlockPos pos)
    {
        return Container.calcRedstone(worldIn.getTileEntity(pos));
    }

    /**
     * The type of render function called. MODEL for mixed tesr and static model, MODELBLOCK_ANIMATED for TESR-only,
     * LIQUID for vanilla liquids, INVISIBLE to skip all rendering
     */
    public EnumBlockRenderType getRenderType(IBlockState state)
    {
        return EnumBlockRenderType.MODEL;
    }

    /**
     * Convert the given metadata into a BlockState for this Block
     */
    public IBlockState getStateFromMeta(int meta)
    {
        return this.getDefaultState().withProperty(FACING, EnumFacing.getFront(meta & 7)).withProperty(TRIGGERED, Boolean.valueOf((meta & 8) > 0));
    }

    /**
     * Convert the BlockState into the correct metadata value
     */
    public int getMetaFromState(IBlockState state)
    {
        int i = 0;
        i = i | ((EnumFacing)state.getValue(FACING)).getIndex();

        if (((Boolean)state.getValue(TRIGGERED)).booleanValue())
        {
            i |= 8;
        }

        return i;
    }

    /**
     * Returns the blockstate with the given rotation from the passed blockstate. If inapplicable, returns the passed
     * blockstate.
     */
    public IBlockState withRotation(IBlockState state, Rotation rot)
    {
        return state.withProperty(FACING, rot.rotate((EnumFacing)state.getValue(FACING)));
    }

    /**
     * Returns the blockstate with the given mirror of the passed blockstate. If inapplicable, returns the passed
     * blockstate.
     */
    public IBlockState withMirror(IBlockState state, Mirror mirrorIn)
    {
        return state.withRotation(mirrorIn.toRotation((EnumFacing)state.getValue(FACING)));
    }

    protected BlockStateContainer createBlockState()
    {
        return new BlockStateContainer(this, new IProperty[] {FACING, TRIGGERED});
    }
}