package com.plotsquared.sponge.util;

import java.util.ArrayList;
import java.util.List;

import org.spongepowered.api.data.DataContainer;
import org.spongepowered.api.entity.Entity;
import org.spongepowered.api.entity.living.Living;
import org.spongepowered.api.entity.living.animal.Animal;
import org.spongepowered.api.entity.living.monster.Monster;
import org.spongepowered.api.world.Chunk;
import org.spongepowered.api.world.World;
import org.spongepowered.api.world.storage.ChunkDataStream;

import com.google.common.base.Optional;
import com.google.common.base.Predicate;
import com.intellectualcrafters.plot.object.ChunkLoc;
import com.intellectualcrafters.plot.object.Location;
import com.intellectualcrafters.plot.object.Plot;
import com.intellectualcrafters.plot.object.PlotBlock;
import com.intellectualcrafters.plot.object.PlotId;
import com.intellectualcrafters.plot.util.ChunkManager;
import com.intellectualcrafters.plot.util.SetBlockQueue.ChunkWrapper;
import com.intellectualcrafters.plot.util.TaskManager;

public class SpongeChunkManager extends ChunkManager {
    
    @Override
    public void setChunk(ChunkWrapper loc, PlotBlock[][] result) {
        // TODO Auto-generated method stub
        
    }
    
    @Override
    public int[] countEntities(Plot plot) {
        Location pos1 = plot.getBottom().add(1, 0, 1);
        Location pos2 = plot.getTop();
        
        String worldname = pos1.getWorld();
        World world = SpongeUtil.getWorld(worldname);
        final int bx = pos1.getX();
        final int bz = pos1.getZ();
        final int tx = pos2.getX();
        final int tz = pos2.getZ();
        final int[] count = new int[5];
        world.getEntities(new Predicate<Entity>() {
            @Override
            public boolean apply(Entity entity) {
                org.spongepowered.api.world.Location loc = entity.getLocation();
                int x = loc.getBlockX();
                if (x >= bx && x <= tx) {
                    int z = loc.getBlockZ();
                    if (z >= bz && z <= tz) {
                        count[0]++;
                        if (entity instanceof Living) {
                            count[3]++;
                            if (entity instanceof Animal) {
                                count[1]++;
                            } else if (entity instanceof Monster){
                                count[2]++;
                            }
                        } else {
                            count[4]++;
                        }
                    }
                }
                return false;
            }
        });
        
        return count;
    }
    
    @Override
    public boolean loadChunk(String world, ChunkLoc loc, boolean force) {
        World worldObj = SpongeUtil.getWorld(world);
        return worldObj.loadChunk(loc.x << 4, 0, loc.z << 4, force).isPresent();
    }
    
    @Override
    public boolean unloadChunk(String world, ChunkLoc loc, boolean save, boolean safe) {
        World worldObj = SpongeUtil.getWorld(world);
        Optional<Chunk> chunk = worldObj.getChunk(loc.x << 4, 0, loc.z << 4);
        if (chunk.isPresent()) {
            return worldObj.unloadChunk(chunk.get());
        }
        return false;
    }
    
    @Override
    public List<ChunkLoc> getChunkChunks(String world) {
        ArrayList<ChunkLoc> chunks = new ArrayList<ChunkLoc>();
        World worldObj = SpongeUtil.getWorld(world);
        ChunkDataStream storage = worldObj.getWorldStorage().getGeneratedChunks();
        while (storage.hasNext()) {
            DataContainer data = storage.next();
            
            // TODO get chunk from DataContainer
        }
        return chunks;
    }
    
    @Override
    public void regenerateChunk(String world, ChunkLoc loc) {
        World worldObj = SpongeUtil.getWorld(world);
        Optional<Chunk> chunk = worldObj.getChunk(loc.x << 4, 0, loc.z << 4);
        if (chunk.isPresent()) {
            // TODO regenerate chunk
        }
    }
    
    @Override
    public void deleteRegionFile(String world, ChunkLoc loc) {
        // TODO Auto-generated method stub
        
    }
    
    @Override
    public void deleteRegionFiles(String world, List<ChunkLoc> chunks) {
        // TODO Auto-generated method stub
        
    }
    
    @Override
    public Plot hasPlot(String world, ChunkLoc chunk) {
        // TODO Auto-generated method stub
        return null;
    }
    
    @Override
    public boolean copyRegion(Location pos1, Location pos2, Location newPos, Runnable whenDone) {
        // TODO Auto-generated method stub
        TaskManager.runTask(whenDone);
        return false;
    }
    
    @Override
    public boolean regenerateRegion(Location pos1, Location pos2, Runnable whenDone) {
        // TODO Auto-generated method stub
        TaskManager.runTask(whenDone);
        return false;
    }
    
    @Override
    public void swap(String world, PlotId id, PlotId plotid) {
        // TODO Auto-generated method stub
        
    }
    
    @Override
    public void swap(String worldname, Location bot1, Location top1, Location bot2, Location top2) {
        // TODO Auto-generated method stub
        
    }

    @Override
    public void clearAllEntities(Location pos1, Location pos2) {
        String worldname = pos1.getWorld();
        World world = SpongeUtil.getWorld(worldname);
        final int bx = pos1.getX();
        final int bz = pos1.getZ();
        final int tx = pos2.getX();
        final int tz = pos2.getZ();
        world.getEntities(new Predicate<Entity>() {
            @Override
            public boolean apply(Entity entity) {
                org.spongepowered.api.world.Location loc = entity.getLocation();
                int x = loc.getBlockX();
                if (x >= bx && x <= tx) {
                    int z = loc.getBlockZ();
                    if (z >= bz && z <= tz) {
                        entity.remove();
                    }
                }
                return false;
            }
        });
    }
    
}