// 
// 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 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.Nonnull;
import javax.annotation.Nullable;
import java.util.Map;

public class InteractionPriority
{
    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 = 20480006;
    @Nullable
    public Map<PrioritySlot, Integer> values;
    
    public InteractionPriority() {
    }
    
    public InteractionPriority(@Nullable final Map<PrioritySlot, Integer> values) {
        this.values = values;
    }
    
    public InteractionPriority(@Nonnull final InteractionPriority other) {
        this.values = other.values;
    }
    
    @Nonnull
    public static InteractionPriority deserialize(@Nonnull final ByteBuf buf, final int offset) {
        final InteractionPriority obj = new InteractionPriority();
        final byte nullBits = buf.getByte(offset);
        int pos = offset + 1;
        if ((nullBits & 0x1) != 0x0) {
            final int valuesCount = VarInt.peek(buf, pos);
            if (valuesCount < 0) {
                throw ProtocolException.negativeLength("Values", valuesCount);
            }
            if (valuesCount > 4096000) {
                throw ProtocolException.dictionaryTooLarge("Values", valuesCount, 4096000);
            }
            pos += VarInt.size(valuesCount);
            obj.values = new HashMap<PrioritySlot, Integer>(valuesCount);
            for (int i = 0; i < valuesCount; ++i) {
                final PrioritySlot key = PrioritySlot.fromValue(buf.getByte(pos));
                ++pos;
                final int val = buf.getIntLE(pos);
                pos += 4;
                if (obj.values.put(key, val) != null) {
                    throw ProtocolException.duplicateKey("values", key);
                }
            }
        }
        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 dictLen = VarInt.peek(buf, pos);
            pos += VarInt.length(buf, pos);
            for (int i = 0; i < dictLen; ++i) {
                ++pos;
                pos += 4;
            }
        }
        return pos - offset;
    }
    
    public void serialize(@Nonnull final ByteBuf buf) {
        byte nullBits = 0;
        if (this.values != null) {
            nullBits |= 0x1;
        }
        buf.writeByte(nullBits);
        if (this.values != null) {
            if (this.values.size() > 4096000) {
                throw ProtocolException.dictionaryTooLarge("Values", this.values.size(), 4096000);
            }
            VarInt.write(buf, this.values.size());
            for (final Map.Entry<PrioritySlot, Integer> e : this.values.entrySet()) {
                buf.writeByte(e.getKey().getValue());
                buf.writeIntLE(e.getValue());
            }
        }
    }
    
    public int computeSize() {
        int size = 1;
        if (this.values != null) {
            size += VarInt.size(this.values.size()) + this.values.size() * 5;
        }
        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 valuesCount = VarInt.peek(buffer, pos);
            if (valuesCount < 0) {
                return ValidationResult.error("Invalid dictionary count for Values");
            }
            if (valuesCount > 4096000) {
                return ValidationResult.error("Values exceeds max length 4096000");
            }
            pos += VarInt.length(buffer, pos);
            for (int i = 0; i < valuesCount; ++i) {
                ++pos;
                pos += 4;
                if (pos > buffer.writerIndex()) {
                    return ValidationResult.error("Buffer overflow reading value");
                }
            }
        }
        return ValidationResult.OK;
    }
    
    public InteractionPriority clone() {
        final InteractionPriority copy = new InteractionPriority();
        copy.values = ((this.values != null) ? new HashMap<PrioritySlot, Integer>(this.values) : null);
        return copy;
    }
    
    @Override
    public boolean equals(final Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj instanceof final InteractionPriority other) {
            return Objects.equals(this.values, other.values);
        }
        return false;
    }
    
    @Override
    public int hashCode() {
        return Objects.hash(this.values);
    }
}