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

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

import java.util.Objects;
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;
import com.hypixel.hytale.protocol.Packet;

public class ServerAuthToken implements Packet
{
    public static final int PACKET_ID = 13;
    public static final boolean IS_COMPRESSED = false;
    public static final int NULLABLE_BIT_FIELD_SIZE = 1;
    public static final int FIXED_BLOCK_SIZE = 1;
    public static final int VARIABLE_FIELD_COUNT = 2;
    public static final int VARIABLE_BLOCK_START = 9;
    public static final int MAX_SIZE = 32851;
    @Nullable
    public String serverAccessToken;
    @Nullable
    public byte[] passwordChallenge;
    
    @Override
    public int getId() {
        return 13;
    }
    
    public ServerAuthToken() {
    }
    
    public ServerAuthToken(@Nullable final String serverAccessToken, @Nullable final byte[] passwordChallenge) {
        this.serverAccessToken = serverAccessToken;
        this.passwordChallenge = passwordChallenge;
    }
    
    public ServerAuthToken(@Nonnull final ServerAuthToken other) {
        this.serverAccessToken = other.serverAccessToken;
        this.passwordChallenge = other.passwordChallenge;
    }
    
    @Nonnull
    public static ServerAuthToken deserialize(@Nonnull final ByteBuf buf, final int offset) {
        final ServerAuthToken obj = new ServerAuthToken();
        final byte nullBits = buf.getByte(offset);
        if ((nullBits & 0x1) != 0x0) {
            final int varPos0 = offset + 9 + buf.getIntLE(offset + 1);
            final int serverAccessTokenLen = VarInt.peek(buf, varPos0);
            if (serverAccessTokenLen < 0) {
                throw ProtocolException.negativeLength("ServerAccessToken", serverAccessTokenLen);
            }
            if (serverAccessTokenLen > 8192) {
                throw ProtocolException.stringTooLong("ServerAccessToken", serverAccessTokenLen, 8192);
            }
            obj.serverAccessToken = PacketIO.readVarString(buf, varPos0, PacketIO.UTF8);
        }
        if ((nullBits & 0x2) != 0x0) {
            final int varPos2 = offset + 9 + buf.getIntLE(offset + 5);
            final int passwordChallengeCount = VarInt.peek(buf, varPos2);
            if (passwordChallengeCount < 0) {
                throw ProtocolException.negativeLength("PasswordChallenge", passwordChallengeCount);
            }
            if (passwordChallengeCount > 64) {
                throw ProtocolException.arrayTooLong("PasswordChallenge", passwordChallengeCount, 64);
            }
            final int varIntLen = VarInt.length(buf, varPos2);
            if (varPos2 + varIntLen + passwordChallengeCount * 1L > buf.readableBytes()) {
                throw ProtocolException.bufferTooSmall("PasswordChallenge", varPos2 + varIntLen + passwordChallengeCount * 1, buf.readableBytes());
            }
            obj.passwordChallenge = new byte[passwordChallengeCount];
            for (int i = 0; i < passwordChallengeCount; ++i) {
                obj.passwordChallenge[i] = buf.getByte(varPos2 + varIntLen + i * 1);
            }
        }
        return obj;
    }
    
    public static int computeBytesConsumed(@Nonnull final ByteBuf buf, final int offset) {
        final byte nullBits = buf.getByte(offset);
        int maxEnd = 9;
        if ((nullBits & 0x1) != 0x0) {
            final int fieldOffset0 = buf.getIntLE(offset + 1);
            int pos0 = offset + 9 + fieldOffset0;
            final int sl = VarInt.peek(buf, pos0);
            pos0 += VarInt.length(buf, pos0) + sl;
            if (pos0 - offset > maxEnd) {
                maxEnd = pos0 - offset;
            }
        }
        if ((nullBits & 0x2) != 0x0) {
            final int fieldOffset2 = buf.getIntLE(offset + 5);
            int pos2 = offset + 9 + fieldOffset2;
            final int arrLen = VarInt.peek(buf, pos2);
            pos2 += VarInt.length(buf, pos2) + arrLen * 1;
            if (pos2 - offset > maxEnd) {
                maxEnd = pos2 - offset;
            }
        }
        return maxEnd;
    }
    
    @Override
    public void serialize(@Nonnull final ByteBuf buf) {
        final int startPos = buf.writerIndex();
        byte nullBits = 0;
        if (this.serverAccessToken != null) {
            nullBits |= 0x1;
        }
        if (this.passwordChallenge != null) {
            nullBits |= 0x2;
        }
        buf.writeByte(nullBits);
        final int serverAccessTokenOffsetSlot = buf.writerIndex();
        buf.writeIntLE(0);
        final int passwordChallengeOffsetSlot = buf.writerIndex();
        buf.writeIntLE(0);
        final int varBlockStart = buf.writerIndex();
        if (this.serverAccessToken != null) {
            buf.setIntLE(serverAccessTokenOffsetSlot, buf.writerIndex() - varBlockStart);
            PacketIO.writeVarString(buf, this.serverAccessToken, 8192);
        }
        else {
            buf.setIntLE(serverAccessTokenOffsetSlot, -1);
        }
        if (this.passwordChallenge != null) {
            buf.setIntLE(passwordChallengeOffsetSlot, buf.writerIndex() - varBlockStart);
            if (this.passwordChallenge.length > 64) {
                throw ProtocolException.arrayTooLong("PasswordChallenge", this.passwordChallenge.length, 64);
            }
            VarInt.write(buf, this.passwordChallenge.length);
            for (final byte item : this.passwordChallenge) {
                buf.writeByte(item);
            }
        }
        else {
            buf.setIntLE(passwordChallengeOffsetSlot, -1);
        }
    }
    
    @Override
    public int computeSize() {
        int size = 9;
        if (this.serverAccessToken != null) {
            size += PacketIO.stringSize(this.serverAccessToken);
        }
        if (this.passwordChallenge != null) {
            size += VarInt.size(this.passwordChallenge.length) + this.passwordChallenge.length * 1;
        }
        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);
        if ((nullBits & 0x1) != 0x0) {
            final int serverAccessTokenOffset = buffer.getIntLE(offset + 1);
            if (serverAccessTokenOffset < 0) {
                return ValidationResult.error("Invalid offset for ServerAccessToken");
            }
            int pos = offset + 9 + serverAccessTokenOffset;
            if (pos >= buffer.writerIndex()) {
                return ValidationResult.error("Offset out of bounds for ServerAccessToken");
            }
            final int serverAccessTokenLen = VarInt.peek(buffer, pos);
            if (serverAccessTokenLen < 0) {
                return ValidationResult.error("Invalid string length for ServerAccessToken");
            }
            if (serverAccessTokenLen > 8192) {
                return ValidationResult.error("ServerAccessToken exceeds max length 8192");
            }
            pos += VarInt.length(buffer, pos);
            pos += serverAccessTokenLen;
            if (pos > buffer.writerIndex()) {
                return ValidationResult.error("Buffer overflow reading ServerAccessToken");
            }
        }
        if ((nullBits & 0x2) != 0x0) {
            final int passwordChallengeOffset = buffer.getIntLE(offset + 5);
            if (passwordChallengeOffset < 0) {
                return ValidationResult.error("Invalid offset for PasswordChallenge");
            }
            int pos = offset + 9 + passwordChallengeOffset;
            if (pos >= buffer.writerIndex()) {
                return ValidationResult.error("Offset out of bounds for PasswordChallenge");
            }
            final int passwordChallengeCount = VarInt.peek(buffer, pos);
            if (passwordChallengeCount < 0) {
                return ValidationResult.error("Invalid array count for PasswordChallenge");
            }
            if (passwordChallengeCount > 64) {
                return ValidationResult.error("PasswordChallenge exceeds max length 64");
            }
            pos += VarInt.length(buffer, pos);
            pos += passwordChallengeCount * 1;
            if (pos > buffer.writerIndex()) {
                return ValidationResult.error("Buffer overflow reading PasswordChallenge");
            }
        }
        return ValidationResult.OK;
    }
    
    public ServerAuthToken clone() {
        final ServerAuthToken copy = new ServerAuthToken();
        copy.serverAccessToken = this.serverAccessToken;
        copy.passwordChallenge = (byte[])((this.passwordChallenge != null) ? Arrays.copyOf(this.passwordChallenge, this.passwordChallenge.length) : null);
        return copy;
    }
    
    @Override
    public boolean equals(final Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj instanceof final ServerAuthToken other) {
            return Objects.equals(this.serverAccessToken, other.serverAccessToken) && Arrays.equals(this.passwordChallenge, other.passwordChallenge);
        }
        return false;
    }
    
    @Override
    public int hashCode() {
        int result = 1;
        result = 31 * result + Objects.hashCode(this.serverAccessToken);
        result = 31 * result + Arrays.hashCode(this.passwordChallenge);
        return result;
    }
}