#!/usr/bin/python

# Copyright (c) 2015,  BROCADE COMMUNICATIONS SYSTEMS, INC

# All rights reserved.

# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:

# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.

# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.

# 3. Neither the name of the copyright holder nor the names of its
# contributors may be used to endorse or promote products derived from this
# software without specific prior written permission.

# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
# THE POSSIBILITY OF SUCH DAMAGE.

"""

@authors: Sergei Garbuzov
@status: Development
@version: 1.1.0


"""

import time
import json

from pybvc.controller.controller import Controller
from pybvc.common.status import STATUS
from pybvc.common.utils import load_dict_from_file


def nc_demo_1():

    f = "cfg1.yml"
    d = {}
    if(load_dict_from_file(f, d) is False):
        print("Config file '%s' read error: " % f)
        exit()

    try:
        ctrlIpAddr = d['ctrlIpAddr']
        ctrlPortNum = d['ctrlPortNum']
        ctrlUname = d['ctrlUname']
        ctrlPswd = d['ctrlPswd']
        rundelay = d['rundelay']
    except:
        print ("Failed to get Controller device attributes")
        exit(0)

    print ("<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<")
    print ("<<< Demo Start")
    print ("<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<")

    print ("\n")
    print ("<<< Creating Controller instance")
    time.sleep(rundelay)
    ctrl = Controller(ctrlIpAddr, ctrlPortNum, ctrlUname, ctrlPswd)
    print ("'Controller':")
    print ctrl.to_json()

    print "\n"
    print ("<<< Get list of YANG models supported by the Controller")
    time.sleep(rundelay)
    nodeName = "controller-config"
    result = ctrl.get_schemas(nodeName)
    status = result.get_status()
    if(status.eq(STATUS.OK)):
        print "YANG models list:"
        slist = result.get_data()
        print json.dumps(slist, default=lambda o: o.__dict__,
                         sort_keys=True, indent=4)
    else:
        print ("\n")
        print ("!!!Demo terminated, reason: %s" % status.brief())
        exit(0)

    print ("\n")
    print (">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>")
    print (">>> Demo End")
    print (">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>")

if __name__ == "__main__":
    nc_demo_1()
