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package org.kaizen4j.common.algorithm.weighted;

import org.apache.commons.lang3.builder.EqualsBuilder;
import org.apache.commons.lang3.builder.HashCodeBuilder;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;

import java.util.concurrent.atomic.AtomicInteger;

public class WeightedServer {

    private String server;

    private int weight;

    private AtomicInteger currentWeight;

    private AtomicInteger effectiveWeight;

    public WeightedServer(String server, int weight) {
        this.weight = weight;
        this.server = server;
        this.effectiveWeight = new AtomicInteger(weight);
        this.currentWeight = new AtomicInteger(0);
    }

    public String getServer() {
        return server;
    }

    public int getWeight() {
        return weight;
    }

    int getCurrentWeight() {
        return currentWeight.get();
    }

    int addAndGetCurrentWeight(int delta) {
        return this.currentWeight.addAndGet(delta);
    }

    void setCurrentWeight(int value) {
        this.currentWeight = new AtomicInteger(value);
    }

    int getEffectiveWeight() {
        return effectiveWeight.get();
    }

    int addAndGetEffectiveWeight(int delta) {
        return this.effectiveWeight.addAndGet(delta);
    }

    void setEffectiveWeight(int value) {
        this.effectiveWeight = new AtomicInteger(value);
    }

    @Override
    public boolean equals(final Object object) {
        if (object instanceof WeightedServer) {
            WeightedServer other = (WeightedServer) object;
            return new EqualsBuilder().append(this.server, other.getServer()).append(this.weight, other.getWeight())
                            .isEquals();
        }
        return false;
    }

    @Override
    public int hashCode() {
        return new HashCodeBuilder().append(this.server).append(this.weight).toHashCode();
    }

    @Override
    public String toString() {
        return ToStringBuilder.reflectionToString(this, ToStringStyle.MULTI_LINE_STYLE);
    }

}