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

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

import java.util.Arrays;
import com.hypixel.hytale.protocol.io.ValidationResult;
import com.hypixel.hytale.protocol.io.ProtocolException;
import com.hypixel.hytale.protocol.io.VarInt;
import io.netty.buffer.ByteBuf;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import com.hypixel.hytale.protocol.Asset;
import com.hypixel.hytale.protocol.Packet;

public class WorldSettings implements Packet
{
    public static final int PACKET_ID = 20;
    public static final boolean IS_COMPRESSED = true;
    public static final int NULLABLE_BIT_FIELD_SIZE = 1;
    public static final int FIXED_BLOCK_SIZE = 5;
    public static final int VARIABLE_FIELD_COUNT = 1;
    public static final int VARIABLE_BLOCK_START = 5;
    public static final int MAX_SIZE = 1677721600;
    public int worldHeight;
    @Nullable
    public Asset[] requiredAssets;
    
    @Override
    public int getId() {
        return 20;
    }
    
    public WorldSettings() {
    }
    
    public WorldSettings(final int worldHeight, @Nullable final Asset[] requiredAssets) {
        this.worldHeight = worldHeight;
        this.requiredAssets = requiredAssets;
    }
    
    public WorldSettings(@Nonnull final WorldSettings other) {
        this.worldHeight = other.worldHeight;
        this.requiredAssets = other.requiredAssets;
    }
    
    @Nonnull
    public static WorldSettings deserialize(@Nonnull final ByteBuf buf, final int offset) {
        final WorldSettings obj = new WorldSettings();
        final byte nullBits = buf.getByte(offset);
        obj.worldHeight = buf.getIntLE(offset + 1);
        int pos = offset + 5;
        if ((nullBits & 0x1) != 0x0) {
            final int requiredAssetsCount = VarInt.peek(buf, pos);
            if (requiredAssetsCount < 0) {
                throw ProtocolException.negativeLength("RequiredAssets", requiredAssetsCount);
            }
            if (requiredAssetsCount > 4096000) {
                throw ProtocolException.arrayTooLong("RequiredAssets", requiredAssetsCount, 4096000);
            }
            final int requiredAssetsVarLen = VarInt.size(requiredAssetsCount);
            if (pos + requiredAssetsVarLen + requiredAssetsCount * 64L > buf.readableBytes()) {
                throw ProtocolException.bufferTooSmall("RequiredAssets", pos + requiredAssetsVarLen + requiredAssetsCount * 64, buf.readableBytes());
            }
            pos += requiredAssetsVarLen;
            obj.requiredAssets = new Asset[requiredAssetsCount];
            for (int i = 0; i < requiredAssetsCount; ++i) {
                obj.requiredAssets[i] = Asset.deserialize(buf, pos);
                pos += Asset.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 + 5;
        if ((nullBits & 0x1) != 0x0) {
            final int arrLen = VarInt.peek(buf, pos);
            pos += VarInt.length(buf, pos);
            for (int i = 0; i < arrLen; ++i) {
                pos += Asset.computeBytesConsumed(buf, pos);
            }
        }
        return pos - offset;
    }
    
    @Override
    public void serialize(@Nonnull final ByteBuf buf) {
        byte nullBits = 0;
        if (this.requiredAssets != null) {
            nullBits |= 0x1;
        }
        buf.writeByte(nullBits);
        buf.writeIntLE(this.worldHeight);
        if (this.requiredAssets != null) {
            if (this.requiredAssets.length > 4096000) {
                throw ProtocolException.arrayTooLong("RequiredAssets", this.requiredAssets.length, 4096000);
            }
            VarInt.write(buf, this.requiredAssets.length);
            for (final Asset item : this.requiredAssets) {
                item.serialize(buf);
            }
        }
    }
    
    @Override
    public int computeSize() {
        int size = 5;
        if (this.requiredAssets != null) {
            int requiredAssetsSize = 0;
            for (final Asset elem : this.requiredAssets) {
                requiredAssetsSize += elem.computeSize();
            }
            size += VarInt.size(this.requiredAssets.length) + requiredAssetsSize;
        }
        return size;
    }
    
    public static ValidationResult validateStructure(@Nonnull final ByteBuf buffer, final int offset) {
        if (buffer.readableBytes() - offset < 5) {
            return ValidationResult.error("Buffer too small: expected at least 5 bytes");
        }
        final byte nullBits = buffer.getByte(offset);
        int pos = offset + 5;
        if ((nullBits & 0x1) != 0x0) {
            final int requiredAssetsCount = VarInt.peek(buffer, pos);
            if (requiredAssetsCount < 0) {
                return ValidationResult.error("Invalid array count for RequiredAssets");
            }
            if (requiredAssetsCount > 4096000) {
                return ValidationResult.error("RequiredAssets exceeds max length 4096000");
            }
            pos += VarInt.length(buffer, pos);
            for (int i = 0; i < requiredAssetsCount; ++i) {
                final ValidationResult structResult = Asset.validateStructure(buffer, pos);
                if (!structResult.isValid()) {
                    return ValidationResult.error("Invalid Asset in RequiredAssets[" + i + "]: " + structResult.error());
                }
                pos += Asset.computeBytesConsumed(buffer, pos);
            }
        }
        return ValidationResult.OK;
    }
    
    public WorldSettings clone() {
        final WorldSettings copy = new WorldSettings();
        copy.worldHeight = this.worldHeight;
        copy.requiredAssets = (Asset[])((this.requiredAssets != null) ? ((Asset[])Arrays.stream(this.requiredAssets).map(e -> e.clone()).toArray(Asset[]::new)) : null);
        return copy;
    }
    
    @Override
    public boolean equals(final Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj instanceof final WorldSettings other) {
            return this.worldHeight == other.worldHeight && Arrays.equals(this.requiredAssets, other.requiredAssets);
        }
        return false;
    }
    
    @Override
    public int hashCode() {
        int result = 1;
        result = 31 * result + Integer.hashCode(this.worldHeight);
        result = 31 * result + Arrays.hashCode(this.requiredAssets);
        return result;
    }
}