package me.km.snuviscript.commands;

import com.mojang.brigadier.StringReader;
import me.hammerle.snuviscript.code.ScriptManager;
import me.hammerle.snuviscript.code.SnuviUtils;
import me.km.inventory.InventoryUtils;
import me.km.utils.Location;
import me.km.utils.Mapper;
import net.minecraft.block.*;
import net.minecraft.command.arguments.BlockStateParser;
import net.minecraft.entity.EntityType;
import net.minecraft.entity.player.ServerPlayerEntity;
import net.minecraft.inventory.IInventory;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.CompoundNBT;
import net.minecraft.network.play.server.SUpdateTileEntityPacket;
import net.minecraft.state.Property;
import net.minecraft.state.properties.ChestType;
import net.minecraft.tags.BlockTags;
import net.minecraft.tags.Tag;
import net.minecraft.tileentity.*;
import net.minecraft.util.Direction;
import net.minecraft.util.ResourceLocation;
import net.minecraft.util.math.BlockPos;
import net.minecraft.util.text.StringTextComponent;
import net.minecraft.world.IWorld;
import net.minecraft.world.World;

public class BlockCommands {

    private static class Offset {

        private final int x;
        private final int y;
        private final int z;

        public Offset(int x, int y, int z) {
            this.x = x;
            this.y = y;
            this.z = z;
        }
    }

    private static final Offset[] OFFSETS = new Offset[]{
        //new Offset(-1, -1, -1),
        new Offset(0, -1, -1),
        //new Offset(1, -1, -1),
        new Offset(-1, 0, -1),
        new Offset(0, 0, -1),
        new Offset(1, 0, -1),
        //new Offset(-1, 1, -1),
        new Offset(0, 1, -1),
        //new Offset(1, 1, -1),

        new Offset(-1, -1, 0),
        new Offset(0, -1, 0),
        new Offset(1, -1, 0),
        new Offset(-1, 0, 0),
        new Offset(0, 0, 0),
        new Offset(1, 0, 0),
        new Offset(-1, 1, 0),
        new Offset(0, 1, 0),
        new Offset(1, 1, 0),
        //new Offset(-1, -1, 1),
        new Offset(0, -1, 1),
        //new Offset(1, -1, 1),
        new Offset(-1, 0, 1),
        new Offset(0, 0, 1),
        new Offset(1, 0, 1),
        //new Offset(-1, 1, 1),
        new Offset(0, 1, 1), //new Offset(1, 1, 1),
    };

    public static void registerFunctions(ScriptManager sm) {
        sm.registerFunction("block.gettag", (sc, in) -> BlockTags.getCollection().get(new ResourceLocation(in[0].getString(sc))));
        sm.registerFunction("block.hastag", (sc, in) -> ((Tag<Block>) in[0].get(sc)).contains((Block) in[1].get(sc)));
        sm.registerFunction("block.gettype", (sc, in) -> {
            Location l = (Location) in[0].get(sc);
            return l.getWorld().getBlockState(l.getBlockPos()).getBlock().getRegistryName().toString();
        });
        sm.registerFunction("block.isair", (sc, in) -> {
            Location l = (Location) in[0].get(sc);
            return l.getWorld().isAirBlock(l.getBlockPos());
        });
        sm.registerFunction("block.countair", (sc, in) -> {
            Location l = (Location) in[0].get(sc);
            IWorld w = l.getWorld();
            BlockPos oldPos = l.getBlockPos();
            BlockPos.Mutable pos = new BlockPos.Mutable(oldPos.getX(), oldPos.getY(), oldPos.getZ());
            int ox = pos.getX();
            int oy = pos.getY();
            int oz = pos.getZ();
            double counter = 0;
            for(Offset off : OFFSETS) {
                pos.setPos(ox + off.x, oy + off.y, oz + off.z);
                if(w.isAirBlock(pos)) {
                    counter++;
                }
            }
            return counter;
        });
        sm.registerFunction("block.get", (sc, in) -> {
            Location l = (Location) in[0].get(sc);
            return l.getWorld().getBlockState(l.getBlockPos()).getBlock();
        });
        sm.registerFunction("block.getproperty", (sc, in) -> Mapper.getProperty(in[0].getString(sc)));
        sm.registerFunction("block.getstate", (sc, in) -> {
            Location l = (Location) in[0].get(sc);
            Property prop = (Property) in[1].get(sc);
            BlockState state = l.getWorld().getBlockState(l.getBlockPos());
            if(state.hasProperty(prop)) {
                Object o = l.getWorld().getBlockState(l.getBlockPos()).get(prop);
                if(o instanceof Number) {
                    return ((Number) o).doubleValue();
                } else if(o instanceof Boolean) {
                    return o;
                }
                return o.toString();
            }
            return null;
        });
        sm.registerConsumer("block.clone", (sc, in) -> {
            Location l0 = (Location) in[0].get(sc);
            Location l1 = (Location) in[1].get(sc);

            IWorld w0 = l0.getWorld();
            BlockPos pos0 = l0.getBlockPos();
            BlockState state = w0.getBlockState(pos0);
            TileEntity tileEnt0 = w0.getTileEntity(pos0);

            IWorld w1 = l1.getWorld();
            BlockPos pos1 = l1.getBlockPos();
            w1.setBlockState(pos1, state, 2);
            TileEntity tileEnt1 = w1.getTileEntity(pos1);
            if(tileEnt0 != null && tileEnt1 != null) {
                CompoundNBT nbt = tileEnt0.write(new CompoundNBT());
                nbt.putInt("x", pos1.getX());
                nbt.putInt("y", pos1.getY());
                nbt.putInt("z", pos1.getZ());
                tileEnt1.read(w1.getBlockState(pos1), nbt);
                tileEnt1.markDirty();
            }
        });
        sm.registerConsumer("block.set", (sc, in) -> {
            Location l = (Location) in[0].get(sc);
            BlockStateParser parser = new BlockStateParser(new StringReader(in[1].getString(sc)), true);
            BlockState state = parser.parse(true).getState();
            int flag = 2;
            if(in.length >= 3 && in[2].getBoolean(sc)) {
                flag |= 16;
            }
            l.getWorld().setBlockState(l.getBlockPos(), state, flag);
        });
        sm.registerFunction("block.newstate", (sc, in) -> {
            BlockStateParser parser = new BlockStateParser(new StringReader(in[0].getString(sc)), true);
            return parser.parse(true).getState();
        });
        sm.registerConsumer("block.setstate", (sc, in) -> {
            Location l = (Location) in[0].get(sc);
            int flag = 2;
            if(in.length >= 3 && in[2].getBoolean(sc)) {
                flag |= 16;
            }
            l.getWorld().setBlockState(l.getBlockPos(), (BlockState) in[1].get(sc), flag);
        });
        sm.registerFunction("block.setsign", (sc, in) -> {
            Location l = (Location) in[0].get(sc);
            TileEntity te = l.getWorld().getTileEntity(l.getBlockPos());
            if(te == null || !(te instanceof SignTileEntity)) {
                return false;
            }
            SignTileEntity sign = (SignTileEntity) te;
            sign.setText(in[1].getInt(sc), new StringTextComponent(SnuviUtils.connect(sc, in, 2)));
            SUpdateTileEntityPacket packet = sign.getUpdatePacket();
            l.getWorld().getPlayers().forEach(p -> ((ServerPlayerEntity) p).connection.sendPacket(packet));
            return true;
        });
        sm.registerFunction("block.getsign", (sc, in) -> {
            Location l = (Location) in[0].get(sc);
            TileEntity te = l.getWorld().getTileEntity(l.getBlockPos());
            if(te == null || !(te instanceof SignTileEntity)) {
                return null;
            }
            return ((SignTileEntity) te).getText(in[1].getInt(sc)).getString();
        });
        sm.registerConsumer("block.setdoorstatus", (sc, in) -> {
            Location l = (Location) in[0].get(sc);
            BlockPos pos = l.getBlockPos();
            BlockState state = l.getWorld().getBlockState(pos);
            ((DoorBlock) state.getBlock()).openDoor((World) l.getWorld(), state, pos, in[1].getBoolean(sc));
        });
        sm.registerFunction("block.getdoorstatus", (sc, in) -> {
            Location l = (Location) in[0].get(sc);
            return l.getBlockState().get(DoorBlock.OPEN);
        });
        sm.registerFunction("block.isdoor", (sc, in) -> {
            Location l = (Location) in[0].get(sc);
            return l.getWorld().getBlockState(l.getBlockPos()).getBlock() instanceof DoorBlock;
        });
        sm.registerFunction("block.issolid", (sc, in) -> {
            return CommandUtils.getBlockState((Location) in[0].get(sc)).isSolid();
        });
        sm.registerFunction("block.tostack", (sc, in) -> {
            Location l = (Location) in[0].get(sc);
            return new ItemStack(l.getBlockState().getBlock().asItem());
        });
        sm.registerFunction("block.getitemamount", (sc, in) -> {
            Location l = (Location) in[0].get(sc);
            TileEntity te = l.getWorld().getTileEntity(l.getBlockPos());
            if(te == null || !(te instanceof ChestTileEntity)) {
                return 0.0d;
            }
            return (double) InventoryUtils.searchInventoryFor((ChestTileEntity) te, (ItemStack) in[2].get(sc), in[1].getBoolean(sc));
        });
        sm.registerFunction("block.getsecchest", (sc, in) -> {
            Location l = (Location) in[0].get(sc);
            BlockPos pos = l.getBlockPos();
            BlockState state = l.getWorld().getBlockState(pos);
            ChestType chesttype = state.get(ChestBlock.TYPE);
            if(chesttype == ChestType.SINGLE) {
                return null;
            }
            Direction dir = ChestBlock.getDirectionToAttached(state);
            return l.copyAdd(dir.getXOffset(), dir.getYOffset(), dir.getZOffset());
        });
        sm.registerFunction("block.additem", (sc, in) -> {
            Location l = (Location) in[0].get(sc);
            ItemStack stack = ((ItemStack) in[1].get(sc));
            TileEntity te = l.getWorld().getTileEntity(l.getBlockPos());
            if(te == null || !(te instanceof ChestTileEntity)) {
                return stack;
            }
            stack.setCount(InventoryUtils.addToInventory((ChestTileEntity) te, stack));
            return stack;
        });
        sm.registerFunction("block.subitem", (sc, in) -> {
            Location l = (Location) in[0].get(sc);
            ItemStack stack = ((ItemStack) in[1].get(sc));
            TileEntity te = l.getWorld().getTileEntity(l.getBlockPos());
            if(te == null || !(te instanceof ChestTileEntity)) {
                return stack;
            }
            stack.setCount(InventoryUtils.removeFromInventory((ChestTileEntity) te, stack));
            return stack;
        });
        sm.registerConsumer("block.setspawnertype", (sc, in) -> {
            Location l = (Location) in[0].get(sc);
            MobSpawnerTileEntity spawner = (MobSpawnerTileEntity) l.getWorld().getTileEntity(l.getBlockPos());
            spawner.getSpawnerBaseLogic().setEntityType(EntityType.byKey(in[1].getString(sc)).get());
        });
        sm.registerFunction("block.getinv", (sc, in) -> {
            Location l = (Location) in[0].get(sc);
            return (IInventory) l.getWorld().getTileEntity(l.getBlockPos());
        });
    }
}