package net.minecraft.server;

import com.google.common.collect.Lists;
import java.util.Iterator;
import java.util.List;
import javax.annotation.Nullable;

public class PersistentVillage extends PersistentBase {

    private World world;
    private final List<BlockPosition> c = Lists.newArrayList();
    private final List<VillageDoor> d = Lists.newArrayList();
    private final List<Village> villages = Lists.newArrayList();
    private int time;

    public PersistentVillage(String s) {
        super(s);
    }

    public PersistentVillage(World world) {
        super(a(world.worldProvider));
        this.world = world;
        this.c();
    }

    public void a(World world) {
        this.world = world;
        Iterator iterator = this.villages.iterator();

        while (iterator.hasNext()) {
            Village village = (Village) iterator.next();

            village.a(world);
        }

    }

    public void a(BlockPosition blockposition) {
        if (this.c.size() <= 64) {
            if (!this.e(blockposition)) {
                this.c.add(blockposition);
            }

        }
    }

    public void tick() {
        ++this.time;
        Iterator iterator = this.villages.iterator();

        while (iterator.hasNext()) {
            Village village = (Village) iterator.next();

            village.a(this.time);
        }

        this.e();
        this.f();
        this.g();
        if (this.time % 400 == 0) {
            this.c();
        }

    }

    private void e() {
        Iterator iterator = this.villages.iterator();

        while (iterator.hasNext()) {
            Village village = (Village) iterator.next();

            if (village.g()) {
                iterator.remove();
                this.c();
            }
        }

    }

    public List<Village> getVillages() {
        return this.villages;
    }

    public Village getClosestVillage(BlockPosition blockposition, int i) {
        Village village = null;
        double d0 = 3.4028234663852886E38D;
        Iterator iterator = this.villages.iterator();

        while (iterator.hasNext()) {
            Village village1 = (Village) iterator.next();
            double d1 = village1.a().n(blockposition);

            if (d1 < d0) {
                float f = (float) (i + village1.b());

                if (d1 <= (double) (f * f)) {
                    village = village1;
                    d0 = d1;
                }
            }
        }

        return village;
    }

    private void f() {
        if (!this.c.isEmpty()) {
            this.b((BlockPosition) this.c.remove(0));
        }
    }

    private void g() {
        for (int i = 0; i < this.d.size(); ++i) {
            VillageDoor villagedoor = (VillageDoor) this.d.get(i);
            Village village = this.getClosestVillage(villagedoor.d(), 32);

            if (village == null) {
                village = new Village(this.world);
                this.villages.add(village);
                this.c();
            }

            village.a(villagedoor);
        }

        this.d.clear();
    }

    private void b(BlockPosition blockposition) {
        boolean flag = true;
        boolean flag1 = true;
        boolean flag2 = true;

        for (int i = -16; i < 16; ++i) {
            for (int j = -4; j < 4; ++j) {
                for (int k = -16; k < 16; ++k) {
                    BlockPosition blockposition1 = blockposition.a(i, j, k);

                    if (this.f(blockposition1)) {
                        VillageDoor villagedoor = this.c(blockposition1);

                        if (villagedoor == null) {
                            this.d(blockposition1);
                        } else {
                            villagedoor.a(this.time);
                        }
                    }
                }
            }
        }

    }

    @Nullable
    private VillageDoor c(BlockPosition blockposition) {
        Iterator iterator = this.d.iterator();

        VillageDoor villagedoor;

        do {
            if (!iterator.hasNext()) {
                iterator = this.villages.iterator();

                VillageDoor villagedoor1;

                do {
                    if (!iterator.hasNext()) {
                        return null;
                    }

                    Village village = (Village) iterator.next();

                    villagedoor1 = village.e(blockposition);
                } while (villagedoor1 == null);

                return villagedoor1;
            }

            villagedoor = (VillageDoor) iterator.next();
        } while (villagedoor.d().getX() != blockposition.getX() || villagedoor.d().getZ() != blockposition.getZ() || Math.abs(villagedoor.d().getY() - blockposition.getY()) > 1);

        return villagedoor;
    }

    private void d(BlockPosition blockposition) {
        EnumDirection enumdirection = BlockDoor.f(this.world, blockposition);
        EnumDirection enumdirection1 = enumdirection.opposite();
        int i = this.a(blockposition, enumdirection, 5);
        int j = this.a(blockposition, enumdirection1, i + 1);

        if (i != j) {
            this.d.add(new VillageDoor(blockposition, i < j ? enumdirection : enumdirection1, this.time));
        }

    }

    private int a(BlockPosition blockposition, EnumDirection enumdirection, int i) {
        int j = 0;

        for (int k = 1; k <= 5; ++k) {
            if (this.world.h(blockposition.shift(enumdirection, k))) {
                ++j;
                if (j >= i) {
                    return j;
                }
            }
        }

        return j;
    }

    private boolean e(BlockPosition blockposition) {
        Iterator iterator = this.c.iterator();

        BlockPosition blockposition1;

        do {
            if (!iterator.hasNext()) {
                return false;
            }

            blockposition1 = (BlockPosition) iterator.next();
        } while (!blockposition1.equals(blockposition));

        return true;
    }

    private boolean f(BlockPosition blockposition) {
        IBlockData iblockdata = this.world.getType(blockposition);
        Block block = iblockdata.getBlock();

        return block instanceof BlockDoor ? iblockdata.getMaterial() == Material.WOOD : false;
    }

    public void a(NBTTagCompound nbttagcompound) {
        this.time = nbttagcompound.getInt("Tick");
        NBTTagList nbttaglist = nbttagcompound.getList("Villages", 10);

        for (int i = 0; i < nbttaglist.size(); ++i) {
            NBTTagCompound nbttagcompound1 = nbttaglist.get(i);
            Village village = new Village();

            village.a(nbttagcompound1);
            this.villages.add(village);
        }

    }

    public NBTTagCompound b(NBTTagCompound nbttagcompound) {
        nbttagcompound.setInt("Tick", this.time);
        NBTTagList nbttaglist = new NBTTagList();
        Iterator iterator = this.villages.iterator();

        while (iterator.hasNext()) {
            Village village = (Village) iterator.next();
            NBTTagCompound nbttagcompound1 = new NBTTagCompound();

            village.b(nbttagcompound1);
            nbttaglist.add(nbttagcompound1);
        }

        nbttagcompound.set("Villages", nbttaglist);
        return nbttagcompound;
    }

    public static String a(WorldProvider worldprovider) {
        return "villages" + worldprovider.getDimensionManager().c();
    }
}