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

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

import java.util.Objects;
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.Nullable;
import com.hypixel.hytale.protocol.ItemCategory;
import javax.annotation.Nonnull;
import com.hypixel.hytale.protocol.UpdateType;
import com.hypixel.hytale.protocol.Packet;

public class UpdateFieldcraftCategories implements Packet
{
    public static final int PACKET_ID = 58;
    public static final boolean IS_COMPRESSED = true;
    public static final int NULLABLE_BIT_FIELD_SIZE = 1;
    public static final int FIXED_BLOCK_SIZE = 2;
    public static final int VARIABLE_FIELD_COUNT = 1;
    public static final int VARIABLE_BLOCK_START = 2;
    public static final int MAX_SIZE = 1677721600;
    @Nonnull
    public UpdateType type;
    @Nullable
    public ItemCategory[] itemCategories;
    
    @Override
    public int getId() {
        return 58;
    }
    
    public UpdateFieldcraftCategories() {
        this.type = UpdateType.Init;
    }
    
    public UpdateFieldcraftCategories(@Nonnull final UpdateType type, @Nullable final ItemCategory[] itemCategories) {
        this.type = UpdateType.Init;
        this.type = type;
        this.itemCategories = itemCategories;
    }
    
    public UpdateFieldcraftCategories(@Nonnull final UpdateFieldcraftCategories other) {
        this.type = UpdateType.Init;
        this.type = other.type;
        this.itemCategories = other.itemCategories;
    }
    
    @Nonnull
    public static UpdateFieldcraftCategories deserialize(@Nonnull final ByteBuf buf, final int offset) {
        final UpdateFieldcraftCategories obj = new UpdateFieldcraftCategories();
        final byte nullBits = buf.getByte(offset);
        obj.type = UpdateType.fromValue(buf.getByte(offset + 1));
        int pos = offset + 2;
        if ((nullBits & 0x1) != 0x0) {
            final int itemCategoriesCount = VarInt.peek(buf, pos);
            if (itemCategoriesCount < 0) {
                throw ProtocolException.negativeLength("ItemCategories", itemCategoriesCount);
            }
            if (itemCategoriesCount > 4096000) {
                throw ProtocolException.arrayTooLong("ItemCategories", itemCategoriesCount, 4096000);
            }
            final int itemCategoriesVarLen = VarInt.size(itemCategoriesCount);
            if (pos + itemCategoriesVarLen + itemCategoriesCount * 6L > buf.readableBytes()) {
                throw ProtocolException.bufferTooSmall("ItemCategories", pos + itemCategoriesVarLen + itemCategoriesCount * 6, buf.readableBytes());
            }
            pos += itemCategoriesVarLen;
            obj.itemCategories = new ItemCategory[itemCategoriesCount];
            for (int i = 0; i < itemCategoriesCount; ++i) {
                obj.itemCategories[i] = ItemCategory.deserialize(buf, pos);
                pos += ItemCategory.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 + 2;
        if ((nullBits & 0x1) != 0x0) {
            final int arrLen = VarInt.peek(buf, pos);
            pos += VarInt.length(buf, pos);
            for (int i = 0; i < arrLen; ++i) {
                pos += ItemCategory.computeBytesConsumed(buf, pos);
            }
        }
        return pos - offset;
    }
    
    @Override
    public void serialize(@Nonnull final ByteBuf buf) {
        byte nullBits = 0;
        if (this.itemCategories != null) {
            nullBits |= 0x1;
        }
        buf.writeByte(nullBits);
        buf.writeByte(this.type.getValue());
        if (this.itemCategories != null) {
            if (this.itemCategories.length > 4096000) {
                throw ProtocolException.arrayTooLong("ItemCategories", this.itemCategories.length, 4096000);
            }
            VarInt.write(buf, this.itemCategories.length);
            for (final ItemCategory item : this.itemCategories) {
                item.serialize(buf);
            }
        }
    }
    
    @Override
    public int computeSize() {
        int size = 2;
        if (this.itemCategories != null) {
            int itemCategoriesSize = 0;
            for (final ItemCategory elem : this.itemCategories) {
                itemCategoriesSize += elem.computeSize();
            }
            size += VarInt.size(this.itemCategories.length) + itemCategoriesSize;
        }
        return size;
    }
    
    public static ValidationResult validateStructure(@Nonnull final ByteBuf buffer, final int offset) {
        if (buffer.readableBytes() - offset < 2) {
            return ValidationResult.error("Buffer too small: expected at least 2 bytes");
        }
        final byte nullBits = buffer.getByte(offset);
        int pos = offset + 2;
        if ((nullBits & 0x1) != 0x0) {
            final int itemCategoriesCount = VarInt.peek(buffer, pos);
            if (itemCategoriesCount < 0) {
                return ValidationResult.error("Invalid array count for ItemCategories");
            }
            if (itemCategoriesCount > 4096000) {
                return ValidationResult.error("ItemCategories exceeds max length 4096000");
            }
            pos += VarInt.length(buffer, pos);
            for (int i = 0; i < itemCategoriesCount; ++i) {
                final ValidationResult structResult = ItemCategory.validateStructure(buffer, pos);
                if (!structResult.isValid()) {
                    return ValidationResult.error("Invalid ItemCategory in ItemCategories[" + i + "]: " + structResult.error());
                }
                pos += ItemCategory.computeBytesConsumed(buffer, pos);
            }
        }
        return ValidationResult.OK;
    }
    
    public UpdateFieldcraftCategories clone() {
        final UpdateFieldcraftCategories copy = new UpdateFieldcraftCategories();
        copy.type = this.type;
        copy.itemCategories = (ItemCategory[])((this.itemCategories != null) ? ((ItemCategory[])Arrays.stream(this.itemCategories).map(e -> e.clone()).toArray(ItemCategory[]::new)) : null);
        return copy;
    }
    
    @Override
    public boolean equals(final Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj instanceof final UpdateFieldcraftCategories other) {
            return Objects.equals(this.type, other.type) && Arrays.equals(this.itemCategories, other.itemCategories);
        }
        return false;
    }
    
    @Override
    public int hashCode() {
        int result = 1;
        result = 31 * result + Objects.hashCode(this.type);
        result = 31 * result + Arrays.hashCode(this.itemCategories);
        return result;
    }
}