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

package com.hypixel.hytale.protocol;

import java.util.Arrays;
import com.hypixel.hytale.protocol.io.ValidationResult;
import com.hypixel.hytale.protocol.io.PacketIO;
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;

public class BlockGroup
{
    public static final int NULLABLE_BIT_FIELD_SIZE = 1;
    public static final int FIXED_BLOCK_SIZE = 1;
    public static final int VARIABLE_FIELD_COUNT = 1;
    public static final int VARIABLE_BLOCK_START = 1;
    public static final int MAX_SIZE = 1677721600;
    @Nullable
    public String[] names;
    
    public BlockGroup() {
    }
    
    public BlockGroup(@Nullable final String[] names) {
        this.names = names;
    }
    
    public BlockGroup(@Nonnull final BlockGroup other) {
        this.names = other.names;
    }
    
    @Nonnull
    public static BlockGroup deserialize(@Nonnull final ByteBuf buf, final int offset) {
        final BlockGroup obj = new BlockGroup();
        final byte nullBits = buf.getByte(offset);
        int pos = offset + 1;
        if ((nullBits & 0x1) != 0x0) {
            final int namesCount = VarInt.peek(buf, pos);
            if (namesCount < 0) {
                throw ProtocolException.negativeLength("Names", namesCount);
            }
            if (namesCount > 4096000) {
                throw ProtocolException.arrayTooLong("Names", namesCount, 4096000);
            }
            final int namesVarLen = VarInt.size(namesCount);
            if (pos + namesVarLen + namesCount * 1L > buf.readableBytes()) {
                throw ProtocolException.bufferTooSmall("Names", pos + namesVarLen + namesCount * 1, buf.readableBytes());
            }
            pos += namesVarLen;
            obj.names = new String[namesCount];
            for (int i = 0; i < namesCount; ++i) {
                final int strLen = VarInt.peek(buf, pos);
                if (strLen < 0) {
                    throw ProtocolException.negativeLength("names[" + i, strLen);
                }
                if (strLen > 4096000) {
                    throw ProtocolException.stringTooLong("names[" + i, strLen, 4096000);
                }
                final int strVarLen = VarInt.length(buf, pos);
                obj.names[i] = PacketIO.readVarString(buf, pos);
                pos += strVarLen + strLen;
            }
        }
        return obj;
    }
    
    public static int computeBytesConsumed(@Nonnull final ByteBuf buf, final int offset) {
        final byte nullBits = buf.getByte(offset);
        int pos = offset + 1;
        if ((nullBits & 0x1) != 0x0) {
            final int arrLen = VarInt.peek(buf, pos);
            pos += VarInt.length(buf, pos);
            for (int i = 0; i < arrLen; ++i) {
                final int sl = VarInt.peek(buf, pos);
                pos += VarInt.length(buf, pos) + sl;
            }
        }
        return pos - offset;
    }
    
    public void serialize(@Nonnull final ByteBuf buf) {
        byte nullBits = 0;
        if (this.names != null) {
            nullBits |= 0x1;
        }
        buf.writeByte(nullBits);
        if (this.names != null) {
            if (this.names.length > 4096000) {
                throw ProtocolException.arrayTooLong("Names", this.names.length, 4096000);
            }
            VarInt.write(buf, this.names.length);
            for (final String item : this.names) {
                PacketIO.writeVarString(buf, item, 4096000);
            }
        }
    }
    
    public int computeSize() {
        int size = 1;
        if (this.names != null) {
            int namesSize = 0;
            for (final String elem : this.names) {
                namesSize += PacketIO.stringSize(elem);
            }
            size += VarInt.size(this.names.length) + namesSize;
        }
        return size;
    }
    
    public static ValidationResult validateStructure(@Nonnull final ByteBuf buffer, final int offset) {
        if (buffer.readableBytes() - offset < 1) {
            return ValidationResult.error("Buffer too small: expected at least 1 bytes");
        }
        final byte nullBits = buffer.getByte(offset);
        int pos = offset + 1;
        if ((nullBits & 0x1) != 0x0) {
            final int namesCount = VarInt.peek(buffer, pos);
            if (namesCount < 0) {
                return ValidationResult.error("Invalid array count for Names");
            }
            if (namesCount > 4096000) {
                return ValidationResult.error("Names exceeds max length 4096000");
            }
            pos += VarInt.length(buffer, pos);
            for (int i = 0; i < namesCount; ++i) {
                final int strLen = VarInt.peek(buffer, pos);
                if (strLen < 0) {
                    return ValidationResult.error("Invalid string length in Names");
                }
                pos += VarInt.length(buffer, pos);
                pos += strLen;
                if (pos > buffer.writerIndex()) {
                    return ValidationResult.error("Buffer overflow reading string in Names");
                }
            }
        }
        return ValidationResult.OK;
    }
    
    public BlockGroup clone() {
        final BlockGroup copy = new BlockGroup();
        copy.names = (String[])((this.names != null) ? ((String[])Arrays.copyOf(this.names, this.names.length)) : null);
        return copy;
    }
    
    @Override
    public boolean equals(final Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj instanceof final BlockGroup other) {
            return Arrays.equals(this.names, other.names);
        }
        return false;
    }
    
    @Override
    public int hashCode() {
        int result = 1;
        result = 31 * result + Arrays.hashCode(this.names);
        return result;
    }
}