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/*Server class MD5: 006df732d8aec756a4a96050c42d4e09*/
package com.jelastic.api.system.persistence;

import com.jelastic.api.development.response.interfaces.ArrayItem;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.List;

/**
 * @name Jelastic API Client
 * @version 8.11.2
 * @copyright Jelastic, Inc.
 */
public class Network extends ArrayItem {

    public static final String NETWORK_COLUMN = "networkIpV6";

    private String network;

    private List subnets;

    private Region region;

    public Network() {
    }

    public Network(String mask) {
        this.network = mask;
    }

    public String getNetwork() {
        return network;
    }

    public void setNetwork(String network) {
        this.network = network;
    }

    public List getSubnets() {
        return subnets;
    }

    public Ipv6Subnet getFirstFreeSubnet() {
        for (Ipv6Subnet s : getSubnets()) {
            if (!s.isBusy() && s.getAddresses().stream().noneMatch(ExtIpAddress::isBusy)) {
                return s;
            }
        }
        return null;
    }

    public Ipv6Subnet getLastAllocatedSubnet() {
        if (subnets == null || subnets.isEmpty()) {
            return null;
        }
        Ipv6Subnet max = subnets.get(0);
        for (Ipv6Subnet s : getSubnets()) {
            if (s.getId() > max.getId()) {
                max = s;
            }
        }
        return max;
    }

    public void setSubnets(List subnets) {
        this.subnets = subnets;
    }

    public Region getRegion() {
        return region;
    }

    public void setRegion(Region region) {
        this.region = region;
    }

    private int getPrefix() {
        String[] array = network.split("/");
        if (array.length != 2) {
            return -1;
        }
        return Integer.parseInt(array[1]);
    }

    @Override
    public JSONObject _toJSON() throws JSONException {
        JSONObject json = new JSONObject();
        json.put("id", id);
        json.put("network", network);
        long total = getTotal();
        json.put("total", total);
        if (subnets.isEmpty()) {
            json.put("free", total);
            json.put("busy", 0);
        } else {
            json.put("allocated", subnets.size());
            long busy = getBusy();
            json.put("free", subnets.size() - busy);
            json.put("busy", busy);
        }
        if (region != null) {
            json.put("region", region.getUniqueName());
        }
        return json;
    }

    private long getBusy() {
        long count = 0;
        for (Ipv6Subnet s : getSubnets()) {
            if (s.isBusy()) {
                count++;
            }
        }
        return count;
    }

    public long getTotal() {
        int lastSubnetPrefix = 128;
        if (!subnets.isEmpty()) {
            Ipv6Subnet subnet = subnets.get(subnets.size() - 1);
            lastSubnetPrefix = subnet.getPrefix();
        }
        return (long) Math.pow(2, lastSubnetPrefix - getPrefix());
    }

    public long getFree() {
        return getTotal() - getBusy();
    }
}