UpdateCategoryAction.java

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

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

public class UpdateCategoryAction extends WindowAction {
   public static final int NULLABLE_BIT_FIELD_SIZE = 0;
   public static final int FIXED_BLOCK_SIZE = 0;
   public static final int VARIABLE_FIELD_COUNT = 2;
   public static final int VARIABLE_BLOCK_START = 8;
   public static final int MAX_SIZE = 32768018;
   @Nonnull
   public String category = "";
   @Nonnull
   public String itemCategory = "";

   public UpdateCategoryAction() {
   }

   public UpdateCategoryAction(@Nonnull String category, @Nonnull String itemCategory) {
      this.category = category;
      this.itemCategory = itemCategory;
   }

   public UpdateCategoryAction(@Nonnull UpdateCategoryAction other) {
      this.category = other.category;
      this.itemCategory = other.itemCategory;
   }

   @Nonnull
   public static UpdateCategoryAction deserialize(@Nonnull ByteBuf buf, int offset) {
      UpdateCategoryAction obj = new UpdateCategoryAction();
      int varPos0 = offset + 8 + buf.getIntLE(offset + 0);
      int categoryLen = VarInt.peek(buf, varPos0);
      if (categoryLen < 0) {
         throw ProtocolException.negativeLength("Category", categoryLen);
      } else if (categoryLen > 4096000) {
         throw ProtocolException.stringTooLong("Category", categoryLen, 4096000);
      } else {
         obj.category = PacketIO.readVarString(buf, varPos0, PacketIO.UTF8);
         varPos0 = offset + 8 + buf.getIntLE(offset + 4);
         categoryLen = VarInt.peek(buf, varPos0);
         if (categoryLen < 0) {
            throw ProtocolException.negativeLength("ItemCategory", categoryLen);
         } else if (categoryLen > 4096000) {
            throw ProtocolException.stringTooLong("ItemCategory", categoryLen, 4096000);
         } else {
            obj.itemCategory = PacketIO.readVarString(buf, varPos0, PacketIO.UTF8);
            return obj;
         }
      }
   }

   public static int computeBytesConsumed(@Nonnull ByteBuf buf, int offset) {
      int maxEnd = 8;
      int fieldOffset0 = buf.getIntLE(offset + 0);
      int pos0 = offset + 8 + fieldOffset0;
      int sl = VarInt.peek(buf, pos0);
      pos0 += VarInt.length(buf, pos0) + sl;
      if (pos0 - offset > maxEnd) {
         maxEnd = pos0 - offset;
      }

      fieldOffset0 = buf.getIntLE(offset + 4);
      pos0 = offset + 8 + fieldOffset0;
      sl = VarInt.peek(buf, pos0);
      pos0 += VarInt.length(buf, pos0) + sl;
      if (pos0 - offset > maxEnd) {
         maxEnd = pos0 - offset;
      }

      return maxEnd;
   }

   public int serialize(@Nonnull ByteBuf buf) {
      int startPos = buf.writerIndex();
      int categoryOffsetSlot = buf.writerIndex();
      buf.writeIntLE(0);
      int itemCategoryOffsetSlot = buf.writerIndex();
      buf.writeIntLE(0);
      int varBlockStart = buf.writerIndex();
      buf.setIntLE(categoryOffsetSlot, buf.writerIndex() - varBlockStart);
      PacketIO.writeVarString(buf, this.category, 4096000);
      buf.setIntLE(itemCategoryOffsetSlot, buf.writerIndex() - varBlockStart);
      PacketIO.writeVarString(buf, this.itemCategory, 4096000);
      return buf.writerIndex() - startPos;
   }

   public int computeSize() {
      int size = 8;
      size += PacketIO.stringSize(this.category);
      size += PacketIO.stringSize(this.itemCategory);
      return size;
   }

   public static ValidationResult validateStructure(@Nonnull ByteBuf buffer, int offset) {
      if (buffer.readableBytes() - offset < 8) {
         return ValidationResult.error("Buffer too small: expected at least 8 bytes");
      } else {
         int categoryOffset = buffer.getIntLE(offset + 0);
         if (categoryOffset < 0) {
            return ValidationResult.error("Invalid offset for Category");
         } else {
            int pos = offset + 8 + categoryOffset;
            if (pos >= buffer.writerIndex()) {
               return ValidationResult.error("Offset out of bounds for Category");
            } else {
               int categoryLen = VarInt.peek(buffer, pos);
               if (categoryLen < 0) {
                  return ValidationResult.error("Invalid string length for Category");
               } else if (categoryLen > 4096000) {
                  return ValidationResult.error("Category exceeds max length 4096000");
               } else {
                  pos += VarInt.length(buffer, pos);
                  pos += categoryLen;
                  if (pos > buffer.writerIndex()) {
                     return ValidationResult.error("Buffer overflow reading Category");
                  } else {
                     categoryOffset = buffer.getIntLE(offset + 4);
                     if (categoryOffset < 0) {
                        return ValidationResult.error("Invalid offset for ItemCategory");
                     } else {
                        pos = offset + 8 + categoryOffset;
                        if (pos >= buffer.writerIndex()) {
                           return ValidationResult.error("Offset out of bounds for ItemCategory");
                        } else {
                           categoryLen = VarInt.peek(buffer, pos);
                           if (categoryLen < 0) {
                              return ValidationResult.error("Invalid string length for ItemCategory");
                           } else if (categoryLen > 4096000) {
                              return ValidationResult.error("ItemCategory exceeds max length 4096000");
                           } else {
                              pos += VarInt.length(buffer, pos);
                              pos += categoryLen;
                              return pos > buffer.writerIndex() ? ValidationResult.error("Buffer overflow reading ItemCategory") : ValidationResult.OK;
                           }
                        }
                     }
                  }
               }
            }
         }
      }
   }

   public UpdateCategoryAction clone() {
      UpdateCategoryAction copy = new UpdateCategoryAction();
      copy.category = this.category;
      copy.itemCategory = this.itemCategory;
      return copy;
   }

   public boolean equals(Object obj) {
      if (this == obj) {
         return true;
      } else if (!(obj instanceof UpdateCategoryAction)) {
         return false;
      } else {
         UpdateCategoryAction other = (UpdateCategoryAction)obj;
         return Objects.equals(this.category, other.category) && Objects.equals(this.itemCategory, other.itemCategory);
      }
   }

   public int hashCode() {
      return Objects.hash(new Object[]{this.category, this.itemCategory});
   }
}