package net.minecraft.item;

import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.block.state.IBlockState;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.init.Blocks;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;

public class ItemShears extends Item
{
    public ItemShears()
    {
        this.setMaxStackSize(1);
        this.setMaxDamage(238);
        this.setCreativeTab(CreativeTabs.TOOLS);
    }

    /**
     * Called when a Block is destroyed using this Item. Return true to trigger the "Use Item" statistic.
     */
    public boolean onBlockDestroyed(ItemStack stack, World worldIn, IBlockState state, BlockPos pos, EntityLivingBase entityLiving)
    {
        if (!worldIn.isRemote)
        {
            stack.damageItem(1, entityLiving);
        }

        Block block = state.getBlock();
        if (block instanceof net.minecraftforge.common.IShearable) return true;
        return state.getMaterial() != Material.LEAVES && block != Blocks.WEB && block != Blocks.TALLGRASS && block != Blocks.VINE && block != Blocks.TRIPWIRE && block != Blocks.WOOL ? super.onBlockDestroyed(stack, worldIn, state, pos, entityLiving) : true;
    }

    /**
     * Check whether this Item can harvest the given Block
     */
    public boolean canHarvestBlock(IBlockState blockIn)
    {
        Block block = blockIn.getBlock();
        return block == Blocks.WEB || block == Blocks.REDSTONE_WIRE || block == Blocks.TRIPWIRE;
    }


    /**
     * Returns true if the item can be used on the given entity, e.g. shears on sheep.
     */
    @Override
    public boolean itemInteractionForEntity(ItemStack itemstack, net.minecraft.entity.player.EntityPlayer player, EntityLivingBase entity, net.minecraft.util.EnumHand hand)
    {
        if (entity.world.isRemote)
        {
            return false;
        }
        if (entity instanceof net.minecraftforge.common.IShearable)
        {
            net.minecraftforge.common.IShearable target = (net.minecraftforge.common.IShearable)entity;
            BlockPos pos = new BlockPos(entity.posX, entity.posY, entity.posZ);
            if (target.isShearable(itemstack, entity.world, pos))
            {
                java.util.List<ItemStack> drops = target.onSheared(itemstack, entity.world, pos,
                        net.minecraft.enchantment.EnchantmentHelper.getEnchantmentLevel(net.minecraft.init.Enchantments.FORTUNE, itemstack));

                java.util.Random rand = new java.util.Random();
                for(ItemStack stack : drops)
                {
                    net.minecraft.entity.item.EntityItem ent = entity.entityDropItem(stack, 1.0F);
                    ent.motionY += rand.nextFloat() * 0.05F;
                    ent.motionX += (rand.nextFloat() - rand.nextFloat()) * 0.1F;
                    ent.motionZ += (rand.nextFloat() - rand.nextFloat()) * 0.1F;
                }
                itemstack.damageItem(1, entity);
            }
            return true;
        }
        return false;
    }

    @Override
    public boolean onBlockStartBreak(ItemStack itemstack, BlockPos pos, net.minecraft.entity.player.EntityPlayer player)
    {
        if (player.world.isRemote || player.capabilities.isCreativeMode)
        {
            return false;
        }
        Block block = player.world.getBlockState(pos).getBlock();
        if (block instanceof net.minecraftforge.common.IShearable)
        {
            net.minecraftforge.common.IShearable target = (net.minecraftforge.common.IShearable)block;
            if (target.isShearable(itemstack, player.world, pos))
            {
                java.util.List<ItemStack> drops = target.onSheared(itemstack, player.world, pos,
                        net.minecraft.enchantment.EnchantmentHelper.getEnchantmentLevel(net.minecraft.init.Enchantments.FORTUNE, itemstack));
                java.util.Random rand = new java.util.Random();

                for (ItemStack stack : drops)
                {
                    float f = 0.7F;
                    double d  = (double)(rand.nextFloat() * f) + (double)(1.0F - f) * 0.5D;
                    double d1 = (double)(rand.nextFloat() * f) + (double)(1.0F - f) * 0.5D;
                    double d2 = (double)(rand.nextFloat() * f) + (double)(1.0F - f) * 0.5D;
                    net.minecraft.entity.item.EntityItem entityitem = new net.minecraft.entity.item.EntityItem(player.world, (double)pos.getX() + d, (double)pos.getY() + d1, (double)pos.getZ() + d2, stack);
                    entityitem.setDefaultPickupDelay();
                    player.world.spawnEntity(entityitem);
                }

                itemstack.damageItem(1, player);
                player.addStat(net.minecraft.stats.StatList.getBlockStats(block));
                player.world.setBlockState(pos, Blocks.AIR.getDefaultState(), 11); //TODO: Move to IShearable implementors in 1.12+
                return true;
            }
        }
        return false;
    }

    public float getDestroySpeed(ItemStack stack, IBlockState state)
    {
        Block block = state.getBlock();

        if (block != Blocks.WEB && state.getMaterial() != Material.LEAVES)
        {
            return block == Blocks.WOOL ? 5.0F : super.getDestroySpeed(stack, state);
        }
        else
        {
            return 15.0F;
        }
    }
}