"""
This file contains device, host and link class for CHOTestMonkey
Author: you@onlab.us
"""

class NetworkElement:
    def __init__( self, index ):
        self.default = ''
        self.index = index
        self.status = 'up'

    def isUp( self ):
        return self.status == 'up'

    def isDown( self ):
        return self.status == 'down'

    def isRemoved( self ):
        return self.status == 'removed'

    def setPendingDown( self ):
        self.status = 'pending_down'

    def setRemoved( self ):
        self.status = 'removed'

    def bringDown( self ):
        self.status = 'down'

    def bringUp( self ):
        self.status = 'up'

class Device( NetworkElement ):
    def __init__( self, index, name, dpid ):
        NetworkElement.__init__( self, index )
        self.name = name
        self.dpid = dpid
        self.hosts = []
        # For each bidirectional link, we only store one direction here
        self.outgoingLinks = []

    def __str__( self ):
        return "name: " + self.name + ", dpid: " + self.dpid

class Host( NetworkElement ):
    def __init__( self, index, name, id, mac, device, devicePort, vlan, ipAddresses ):
        NetworkElement.__init__( self, index )
        self.name = name
        self.id = id
        self.mac = mac
        self.device = device
        self.devicePort = devicePort
        self.vlan = vlan
        self.ipAddresses = ipAddresses
        self.correspondents = []
        self.handle = None

    def __str__( self ):
        return "name: " + self.name + ", mac: " + self.mac + ", device: " + self.device.dpid + ", ipAddresses: " + str( self.ipAddresses )

    def setHandle( self, handle ):
        self.handle = handle

class Link( NetworkElement ):
    """
    Unidirectional link
    """
    def __init__( self, index, deviceA, portA, deviceB, portB ):
        NetworkElement.__init__( self, index )
        self.backwardLink = None
        self.deviceA = deviceA
        self.portA = portA
        self.deviceB = deviceB
        self.portB = portB

    def __str__( self ):
        return self.deviceA.dpid + "/" + self.portA + " - " + self.deviceB.dpid + "/" + self.portB

    def setBackwardLink( self, link ):
        self.backwardLink = link