"""
Copyright 2016 Open Networking Foundation ( ONF )

Please refer questions to either the onos test mailing list at <onos-test@onosproject.org>,
the System Testing Plans and Results wiki page at <https://wiki.onosproject.org/x/voMg>,
or the System Testing Guide page at <https://wiki.onosproject.org/x/WYQg>

    TestON is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 2 of the License, or
    ( at your option ) any later version.

    TestON is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with TestON.  If not, see <http://www.gnu.org/licenses/>.
"""
class Utils:

    def __init__( self ):
        self.default = ''

    def mininetCleanIntro( self, includeCaseDesc=True ):
        """
        Description:
            Introduction information of the mininet clean up
        Required:
        Returns:
        """
        main.log.report( "Stop Mininet" )
        if includeCaseDesc:
            main.case( "Stop Mininet" )
            main.caseExplanation = "Stopping the current mininet to start up fresh"

    def mininetCleanup( self, Mininet, timeout=5, exitTimeout=1000 ):
        """
        Description:
            Clean up the mininet using stopNet and verify it.
        Required:
            * Mininet - mininet driver to use
            * timeout - time out of mininet.stopNet.
        Returns:
            Returns main.TRUE if successfully stopping minient.
            else returns main.FALSE
        """
        main.step( "Stopping Mininet" )
        topoResult = Mininet.stopNet( timeout=timeout, exitTimeout=exitTimeout )
        utilities.assert_equals( expect=main.TRUE,
                                 actual=topoResult,
                                 onpass="Successfully stopped mininet",
                                 onfail="Failed to stopped mininet" )
        return topoResult

    def copyKarafLog( self, copyFileName="", before=False, includeCaseDesc=True,
                      useStern=False, startTime=None ):
        """
        Description:
            copy the karaf log and verify it.
        Required:
            * copyFileName - name of the end portion of the
            copyFileName.
        Returns:
        """
        import datetime
        import math
        # TODO: Also grab the rotated karaf logs
        main.log.report( "Copy karaf logs" )
        if includeCaseDesc:
            main.case( "Copy karaf logs" )
            main.caseExplanation = "Copying the karaf logs to preserve them through" +\
                                   "reinstalling ONOS"
        main.step( "Copying karaf logs" )
        stepResult = main.TRUE
        scpResult = main.TRUE
        copyResult = main.TRUE
        isKube = False
        for ctrl in main.Cluster.runningNodes:
            if ctrl.k8s:
                isKube = True
                continue
            elif ctrl.inDocker:
                scpResult = scpResult and ctrl.server.dockerCp( ctrl.name,
                                                                "/opt/onos/log/karaf.log",
                                                                "/tmp/karaf.log",
                                                                direction="from" )
                scpResult = scpResult and main.ONOSbench.scp( ctrl.server,
                                                              "/tmp/karaf.log",
                                                              "/tmp/karaf.log",
                                                              direction="from" )
            else:
                scpResult = scpResult and main.ONOSbench.scp( ctrl.server,
                                                              "/opt/onos/log/karaf.log",
                                                              "/tmp/karaf.log",
                                                              direction="from" )
            copyResult = copyResult and main.ONOSbench.cpLogsToDir( "/tmp/karaf.log", main.logdir,
                                                                    copyFileName=( copyFileName + "_karaf.log." +
                                                                                   ctrl.name + "_" ) if before else
                                                                                 ( "karaf.log." + ctrl.name +
                                                                                    "." + copyFileName ) )
            if scpResult and copyResult:
                stepResult = main.TRUE and stepResult
            else:
                stepResult = main.FALSE and stepResult
        if isKube:
            # We also need to save the pod name to switch name mapping
            main.ONOSbench.kubectlPodNodes( dstPath=main.logdir + "/podMapping.txt",
                                            kubeconfig=ctrl.k8s.kubeConfig,
                                            namespace=main.params[ 'kubernetes' ][ 'namespace' ] )
            # Save image for pods, based on "describe pods"
            main.ONOSbench.kubectlDescribe( "pods",
                                            main.logdir + "/describePods.txt",
                                            kubeconfig=ctrl.k8s.kubeConfig,
                                            namespace=main.params[ 'kubernetes' ][ 'namespace' ] )
            # Get the pod logs
            pods = main.ONOSbench.kubectlGetPodNames( kubeconfig=ctrl.k8s.kubeConfig,
                                                      namespace=main.params[ 'kubernetes' ][ 'namespace' ] )

            MINUTE = datetime.timedelta( minutes=1 )
            for pod in pods:
                path = "%s/%s_%s.log" % ( main.logdir, copyFileName, pod )
                if useStern:
                    wait=10
                    if "onos-classic" in pod:
                        wait=30
                    elif "stratum" in pod:
                        wait=30
                    else:
                        main.log.debug( "Skipping fetch logs for %s" % pod )
                        continue
                    if startTime:
                        now = datetime.datetime.utcnow()
                        duration = ( now - startTime ) + MINUTE
                        since = "%ss" % int( math.ceil( duration.total_seconds() ) )
                    else:
                        since = "1h"
                    podResults = main.ONOSbench.sternLogs( pod,
                                                           path,
                                                           kubeconfig=ctrl.k8s.kubeConfig,
                                                           namespace=main.params[ 'kubernetes' ][ 'namespace' ],
                                                           since=since,
                                                           wait=wait )
                else:
                    podResults = main.ONOSbench.kubectlLogs( pod,
                                                             path,
                                                             kubeconfig=ctrl.k8s.kubeConfig,
                                                             namespace=main.params[ 'kubernetes' ][ 'namespace' ] )
                stepResult = stepResult and podResults
        utilities.assert_equals( expect=main.TRUE,
                                 actual=stepResult,
                                 onpass="Successfully copied remote ONOS logs",
                                 onfail="Failed to copy remote ONOS logs" )