package net.onrc.onos.apps.bgproute;

import java.net.InetAddress;

import net.onrc.onos.core.util.Dpid;
import net.onrc.onos.core.util.Port;
import net.onrc.onos.core.util.SwitchPort;

import org.codehaus.jackson.annotate.JsonCreator;
import org.codehaus.jackson.annotate.JsonProperty;
import org.openflow.util.HexString;

import com.google.common.net.InetAddresses;

public class Interface {
    private final String name;
    private final long dpid;
    private final short port;
    private final InetAddress ipAddress;
    private final int prefixLength;

    @JsonCreator
    public Interface(@JsonProperty("name") String name,
                     @JsonProperty("dpid") String dpid,
                     @JsonProperty("port") short port,
                     @JsonProperty("ipAddress") String ipAddress,
                     @JsonProperty("prefixLength") int prefixLength) {
        this.name = name;
        this.dpid = HexString.toLong(dpid);
        this.port = port;
        this.ipAddress = InetAddresses.forString(ipAddress);
        this.prefixLength = prefixLength;
    }

    public String getName() {
        return name;
    }

    public SwitchPort getSwitchPort() {
        //TODO SwitchPort, Dpid and Port are mutable, but they could probably
        //be made immutable which would prevent the need to copy
        return new SwitchPort(new Dpid(dpid), new Port(port));
    }

    public long getDpid() {
        return dpid;
    }

    public short getPort() {
        return port;
    }

    public InetAddress getIpAddress() {
        return ipAddress;
    }

    public int getPrefixLength() {
        return prefixLength;
    }

    @Override
    public boolean equals(Object other) {
        if (other == null || !(other instanceof Interface)) {
            return false;
        }

        Interface otherInterface = (Interface) other;

        //Don't check switchPort as it's comprised of dpid and port
        return (name.equals(otherInterface.name)) &&
                (dpid == otherInterface.dpid) &&
                (port == otherInterface.port) &&
                (ipAddress.equals(otherInterface.ipAddress)) &&
                (prefixLength == otherInterface.prefixLength);
    }

    @Override
    public int hashCode() {
        int hash = 17;
        hash = 31 * hash + name.hashCode();
        hash = 31 * hash + (int) (dpid ^ dpid >>> 32);
        hash = 31 * hash + (int) port;
        hash = 31 * hash + ipAddress.hashCode();
        hash = 31 * hash + prefixLength;
        return hash;
    }
}