// 
// Decompiled by Procyon v0.6.0
// 

package com.hypixel.hytale.protocol.packets.worldmap;

import java.util.Objects;
import com.hypixel.hytale.protocol.io.ValidationResult;
import io.netty.buffer.ByteBuf;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;

public class MapChunk
{
    public static final int NULLABLE_BIT_FIELD_SIZE = 1;
    public static final int FIXED_BLOCK_SIZE = 9;
    public static final int VARIABLE_FIELD_COUNT = 1;
    public static final int VARIABLE_BLOCK_START = 9;
    public static final int MAX_SIZE = 16384023;
    public int chunkX;
    public int chunkZ;
    @Nullable
    public MapImage image;
    
    public MapChunk() {
    }
    
    public MapChunk(final int chunkX, final int chunkZ, @Nullable final MapImage image) {
        this.chunkX = chunkX;
        this.chunkZ = chunkZ;
        this.image = image;
    }
    
    public MapChunk(@Nonnull final MapChunk other) {
        this.chunkX = other.chunkX;
        this.chunkZ = other.chunkZ;
        this.image = other.image;
    }
    
    @Nonnull
    public static MapChunk deserialize(@Nonnull final ByteBuf buf, final int offset) {
        final MapChunk obj = new MapChunk();
        final byte nullBits = buf.getByte(offset);
        obj.chunkX = buf.getIntLE(offset + 1);
        obj.chunkZ = buf.getIntLE(offset + 5);
        int pos = offset + 9;
        if ((nullBits & 0x1) != 0x0) {
            obj.image = MapImage.deserialize(buf, pos);
            pos += MapImage.computeBytesConsumed(buf, pos);
        }
        return obj;
    }
    
    public static int computeBytesConsumed(@Nonnull final ByteBuf buf, final int offset) {
        final byte nullBits = buf.getByte(offset);
        int pos = offset + 9;
        if ((nullBits & 0x1) != 0x0) {
            pos += MapImage.computeBytesConsumed(buf, pos);
        }
        return pos - offset;
    }
    
    public void serialize(@Nonnull final ByteBuf buf) {
        byte nullBits = 0;
        if (this.image != null) {
            nullBits |= 0x1;
        }
        buf.writeByte(nullBits);
        buf.writeIntLE(this.chunkX);
        buf.writeIntLE(this.chunkZ);
        if (this.image != null) {
            this.image.serialize(buf);
        }
    }
    
    public int computeSize() {
        int size = 9;
        if (this.image != null) {
            size += this.image.computeSize();
        }
        return size;
    }
    
    public static ValidationResult validateStructure(@Nonnull final ByteBuf buffer, final int offset) {
        if (buffer.readableBytes() - offset < 9) {
            return ValidationResult.error("Buffer too small: expected at least 9 bytes");
        }
        final byte nullBits = buffer.getByte(offset);
        int pos = offset + 9;
        if ((nullBits & 0x1) != 0x0) {
            final ValidationResult imageResult = MapImage.validateStructure(buffer, pos);
            if (!imageResult.isValid()) {
                return ValidationResult.error("Invalid Image: " + imageResult.error());
            }
            pos += MapImage.computeBytesConsumed(buffer, pos);
        }
        return ValidationResult.OK;
    }
    
    public MapChunk clone() {
        final MapChunk copy = new MapChunk();
        copy.chunkX = this.chunkX;
        copy.chunkZ = this.chunkZ;
        copy.image = ((this.image != null) ? this.image.clone() : null);
        return copy;
    }
    
    @Override
    public boolean equals(final Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj instanceof final MapChunk other) {
            return this.chunkX == other.chunkX && this.chunkZ == other.chunkZ && Objects.equals(this.image, other.image);
        }
        return false;
    }
    
    @Override
    public int hashCode() {
        return Objects.hash(this.chunkX, this.chunkZ, this.image);
    }
}