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

package com.hypixel.hytale.protocol;

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

public class EntityStatUpdate
{
    public static final int NULLABLE_BIT_FIELD_SIZE = 1;
    public static final int FIXED_BLOCK_SIZE = 13;
    public static final int VARIABLE_FIELD_COUNT = 2;
    public static final int VARIABLE_BLOCK_START = 21;
    public static final int MAX_SIZE = 1677721600;
    @Nonnull
    public EntityStatOp op;
    public boolean predictable;
    public float value;
    @Nullable
    public Map<String, Modifier> modifiers;
    @Nullable
    public String modifierKey;
    @Nullable
    public Modifier modifier;
    
    public EntityStatUpdate() {
        this.op = EntityStatOp.Init;
    }
    
    public EntityStatUpdate(@Nonnull final EntityStatOp op, final boolean predictable, final float value, @Nullable final Map<String, Modifier> modifiers, @Nullable final String modifierKey, @Nullable final Modifier modifier) {
        this.op = EntityStatOp.Init;
        this.op = op;
        this.predictable = predictable;
        this.value = value;
        this.modifiers = modifiers;
        this.modifierKey = modifierKey;
        this.modifier = modifier;
    }
    
    public EntityStatUpdate(@Nonnull final EntityStatUpdate other) {
        this.op = EntityStatOp.Init;
        this.op = other.op;
        this.predictable = other.predictable;
        this.value = other.value;
        this.modifiers = other.modifiers;
        this.modifierKey = other.modifierKey;
        this.modifier = other.modifier;
    }
    
    @Nonnull
    public static EntityStatUpdate deserialize(@Nonnull final ByteBuf buf, final int offset) {
        final EntityStatUpdate obj = new EntityStatUpdate();
        final byte nullBits = buf.getByte(offset);
        obj.op = EntityStatOp.fromValue(buf.getByte(offset + 1));
        obj.predictable = (buf.getByte(offset + 2) != 0);
        obj.value = buf.getFloatLE(offset + 3);
        if ((nullBits & 0x1) != 0x0) {
            obj.modifier = Modifier.deserialize(buf, offset + 7);
        }
        if ((nullBits & 0x2) != 0x0) {
            final int varPos0 = offset + 21 + buf.getIntLE(offset + 13);
            final int modifiersCount = VarInt.peek(buf, varPos0);
            if (modifiersCount < 0) {
                throw ProtocolException.negativeLength("Modifiers", modifiersCount);
            }
            if (modifiersCount > 4096000) {
                throw ProtocolException.dictionaryTooLarge("Modifiers", modifiersCount, 4096000);
            }
            final int varIntLen = VarInt.length(buf, varPos0);
            obj.modifiers = new HashMap<String, Modifier>(modifiersCount);
            int dictPos = varPos0 + varIntLen;
            for (int i = 0; i < modifiersCount; ++i) {
                final int keyLen = VarInt.peek(buf, dictPos);
                if (keyLen < 0) {
                    throw ProtocolException.negativeLength("key", keyLen);
                }
                if (keyLen > 4096000) {
                    throw ProtocolException.stringTooLong("key", keyLen, 4096000);
                }
                final int keyVarLen = VarInt.length(buf, dictPos);
                final String key = PacketIO.readVarString(buf, dictPos);
                dictPos += keyVarLen + keyLen;
                final Modifier val = Modifier.deserialize(buf, dictPos);
                dictPos += Modifier.computeBytesConsumed(buf, dictPos);
                if (obj.modifiers.put(key, val) != null) {
                    throw ProtocolException.duplicateKey("modifiers", key);
                }
            }
        }
        if ((nullBits & 0x4) != 0x0) {
            final int varPos2 = offset + 21 + buf.getIntLE(offset + 17);
            final int modifierKeyLen = VarInt.peek(buf, varPos2);
            if (modifierKeyLen < 0) {
                throw ProtocolException.negativeLength("ModifierKey", modifierKeyLen);
            }
            if (modifierKeyLen > 4096000) {
                throw ProtocolException.stringTooLong("ModifierKey", modifierKeyLen, 4096000);
            }
            obj.modifierKey = PacketIO.readVarString(buf, varPos2, PacketIO.UTF8);
        }
        return obj;
    }
    
    public static int computeBytesConsumed(@Nonnull final ByteBuf buf, final int offset) {
        final byte nullBits = buf.getByte(offset);
        int maxEnd = 21;
        if ((nullBits & 0x2) != 0x0) {
            final int fieldOffset0 = buf.getIntLE(offset + 13);
            int pos0 = offset + 21 + fieldOffset0;
            final int dictLen = VarInt.peek(buf, pos0);
            pos0 += VarInt.length(buf, pos0);
            for (int i = 0; i < dictLen; ++i) {
                final int sl = VarInt.peek(buf, pos0);
                pos0 += VarInt.length(buf, pos0) + sl;
                pos0 += Modifier.computeBytesConsumed(buf, pos0);
            }
            if (pos0 - offset > maxEnd) {
                maxEnd = pos0 - offset;
            }
        }
        if ((nullBits & 0x4) != 0x0) {
            final int fieldOffset2 = buf.getIntLE(offset + 17);
            int pos2 = offset + 21 + fieldOffset2;
            final int sl2 = VarInt.peek(buf, pos2);
            pos2 += VarInt.length(buf, pos2) + sl2;
            if (pos2 - offset > maxEnd) {
                maxEnd = pos2 - offset;
            }
        }
        return maxEnd;
    }
    
    public void serialize(@Nonnull final ByteBuf buf) {
        final int startPos = buf.writerIndex();
        byte nullBits = 0;
        if (this.modifier != null) {
            nullBits |= 0x1;
        }
        if (this.modifiers != null) {
            nullBits |= 0x2;
        }
        if (this.modifierKey != null) {
            nullBits |= 0x4;
        }
        buf.writeByte(nullBits);
        buf.writeByte(this.op.getValue());
        buf.writeByte(this.predictable ? 1 : 0);
        buf.writeFloatLE(this.value);
        if (this.modifier != null) {
            this.modifier.serialize(buf);
        }
        else {
            buf.writeZero(6);
        }
        final int modifiersOffsetSlot = buf.writerIndex();
        buf.writeIntLE(0);
        final int modifierKeyOffsetSlot = buf.writerIndex();
        buf.writeIntLE(0);
        final int varBlockStart = buf.writerIndex();
        if (this.modifiers != null) {
            buf.setIntLE(modifiersOffsetSlot, buf.writerIndex() - varBlockStart);
            if (this.modifiers.size() > 4096000) {
                throw ProtocolException.dictionaryTooLarge("Modifiers", this.modifiers.size(), 4096000);
            }
            VarInt.write(buf, this.modifiers.size());
            for (final Map.Entry<String, Modifier> e : this.modifiers.entrySet()) {
                PacketIO.writeVarString(buf, e.getKey(), 4096000);
                e.getValue().serialize(buf);
            }
        }
        else {
            buf.setIntLE(modifiersOffsetSlot, -1);
        }
        if (this.modifierKey != null) {
            buf.setIntLE(modifierKeyOffsetSlot, buf.writerIndex() - varBlockStart);
            PacketIO.writeVarString(buf, this.modifierKey, 4096000);
        }
        else {
            buf.setIntLE(modifierKeyOffsetSlot, -1);
        }
    }
    
    public int computeSize() {
        int size = 21;
        if (this.modifiers != null) {
            int modifiersSize = 0;
            for (final Map.Entry<String, Modifier> kvp : this.modifiers.entrySet()) {
                modifiersSize += PacketIO.stringSize(kvp.getKey()) + 6;
            }
            size += VarInt.size(this.modifiers.size()) + modifiersSize;
        }
        if (this.modifierKey != null) {
            size += PacketIO.stringSize(this.modifierKey);
        }
        return size;
    }
    
    public static ValidationResult validateStructure(@Nonnull final ByteBuf buffer, final int offset) {
        if (buffer.readableBytes() - offset < 21) {
            return ValidationResult.error("Buffer too small: expected at least 21 bytes");
        }
        final byte nullBits = buffer.getByte(offset);
        if ((nullBits & 0x2) != 0x0) {
            final int modifiersOffset = buffer.getIntLE(offset + 13);
            if (modifiersOffset < 0) {
                return ValidationResult.error("Invalid offset for Modifiers");
            }
            int pos = offset + 21 + modifiersOffset;
            if (pos >= buffer.writerIndex()) {
                return ValidationResult.error("Offset out of bounds for Modifiers");
            }
            final int modifiersCount = VarInt.peek(buffer, pos);
            if (modifiersCount < 0) {
                return ValidationResult.error("Invalid dictionary count for Modifiers");
            }
            if (modifiersCount > 4096000) {
                return ValidationResult.error("Modifiers exceeds max length 4096000");
            }
            pos += VarInt.length(buffer, pos);
            for (int i = 0; i < modifiersCount; ++i) {
                final int keyLen = VarInt.peek(buffer, pos);
                if (keyLen < 0) {
                    return ValidationResult.error("Invalid string length for key");
                }
                if (keyLen > 4096000) {
                    return ValidationResult.error("key exceeds max length 4096000");
                }
                pos += VarInt.length(buffer, pos);
                pos += keyLen;
                if (pos > buffer.writerIndex()) {
                    return ValidationResult.error("Buffer overflow reading key");
                }
                pos += 6;
            }
        }
        if ((nullBits & 0x4) != 0x0) {
            final int modifierKeyOffset = buffer.getIntLE(offset + 17);
            if (modifierKeyOffset < 0) {
                return ValidationResult.error("Invalid offset for ModifierKey");
            }
            int pos = offset + 21 + modifierKeyOffset;
            if (pos >= buffer.writerIndex()) {
                return ValidationResult.error("Offset out of bounds for ModifierKey");
            }
            final int modifierKeyLen = VarInt.peek(buffer, pos);
            if (modifierKeyLen < 0) {
                return ValidationResult.error("Invalid string length for ModifierKey");
            }
            if (modifierKeyLen > 4096000) {
                return ValidationResult.error("ModifierKey exceeds max length 4096000");
            }
            pos += VarInt.length(buffer, pos);
            pos += modifierKeyLen;
            if (pos > buffer.writerIndex()) {
                return ValidationResult.error("Buffer overflow reading ModifierKey");
            }
        }
        return ValidationResult.OK;
    }
    
    public EntityStatUpdate clone() {
        final EntityStatUpdate copy = new EntityStatUpdate();
        copy.op = this.op;
        copy.predictable = this.predictable;
        copy.value = this.value;
        if (this.modifiers != null) {
            final Map<String, Modifier> m = new HashMap<String, Modifier>();
            for (final Map.Entry<String, Modifier> e : this.modifiers.entrySet()) {
                m.put(e.getKey(), e.getValue().clone());
            }
            copy.modifiers = m;
        }
        copy.modifierKey = this.modifierKey;
        copy.modifier = ((this.modifier != null) ? this.modifier.clone() : null);
        return copy;
    }
    
    @Override
    public boolean equals(final Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj instanceof final EntityStatUpdate other) {
            return Objects.equals(this.op, other.op) && this.predictable == other.predictable && this.value == other.value && Objects.equals(this.modifiers, other.modifiers) && Objects.equals(this.modifierKey, other.modifierKey) && Objects.equals(this.modifier, other.modifier);
        }
        return false;
    }
    
    @Override
    public int hashCode() {
        return Objects.hash(this.op, this.predictable, this.value, this.modifiers, this.modifierKey, this.modifier);
    }
}