#!/usr/bin/python

import argparse
import fileinput
import os
import re
import shutil
import sys
import urlparse

from robot import run
from robot.api import ExecutionResult, ResultVisitor
from robot.errors import RobotError
from robot.utils.robottime import timestamp_to_secs

import functest.utils.functest_logger as ft_logger
import functest.utils.functest_utils as ft_utils
import functest.utils.openstack_utils as op_utils


class ODLResultVisitor(ResultVisitor):

    def __init__(self):
        self._data = []

    def visit_test(self, test):
        output = {}
        output['name'] = test.name
        output['parent'] = test.parent.name
        output['status'] = test.status
        output['startime'] = test.starttime
        output['endtime'] = test.endtime
        output['critical'] = test.critical
        output['text'] = test.message
        output['elapsedtime'] = test.elapsedtime
        self._data.append(output)

    def get_data(self):
        return self._data


class ODLTestCases:

    repos = "/home/opnfv/repos/"
    odl_test_repo = repos + "odl_test/"
    neutron_suite_dir = odl_test_repo + "csit/suites/openstack/neutron/"
    basic_suite_dir = odl_test_repo + "csit/suites/integration/basic/"
    res_dir = '/home/opnfv/functest/results/odl/'
    logger = ft_logger.Logger("opendaylight").getLogger()

    @classmethod
    def copy_opnf_testcases(cls):
        opnfv_testcases_dir = (os.path.dirname(os.path.abspath(__file__)) +
                               "/custom_tests/neutron/")
        file = opnfv_testcases_dir + "001__reachability.robot"
        try:
            shutil.copy(file, cls.neutron_suite_dir)
        except IOError as e:
            cls.logger.error(
                "Cannot copy OPNFV's testcase to ODL directory: %s" % str(e))
            return False
        return True

    @classmethod
    def set_robotframework_vars(cls, odlusername="admin", odlpassword="admin"):
        odl_variables_files = cls.odl_test_repo + 'csit/variables/Variables.py'
        try:
            for line in fileinput.input(odl_variables_files,
                                        inplace=True):
                print re.sub("AUTH = .*",
                             ("AUTH = [u'" + odlusername + "', u'" +
                              odlpassword + "']"),
                             line.rstrip())
            return True
        except Exception as e:
            cls.logger.error("Cannot set ODL creds: %s" % str(e))
            return False

    @classmethod
    def run(cls, **kwargs):
        dirs = [cls.basic_suite_dir, cls.neutron_suite_dir]
        try:
            odlusername = kwargs['odlusername']
            odlpassword = kwargs['odlpassword']
            variables = ['KEYSTONE:' + kwargs['keystoneip'],
                         'NEUTRON:' + kwargs['neutronip'],
                         'OSUSERNAME:"' + kwargs['osusername'] + '"',
                         'OSTENANTNAME:"' + kwargs['ostenantname'] + '"',
                         'OSPASSWORD:"' + kwargs['ospassword'] + '"',
                         'ODL_SYSTEM_IP:' + kwargs['odlip'],
                         'PORT:' + kwargs['odlwebport'],
                         'RESTCONFPORT:' + kwargs['odlrestconfport']]
        except KeyError as e:
            cls.logger.error("Cannot run ODL testcases. Please check "
                             "%s" % str(e))
            return False
        if (cls.copy_opnf_testcases() and
                cls.set_robotframework_vars(odlusername, odlpassword)):
            try:
                os.makedirs(cls.res_dir)
            except OSError:
                pass
            stdout_file = cls.res_dir + 'stdout.txt'
            with open(stdout_file, 'w+') as stdout:
                run(*dirs, variable=variables,
                    output=cls.res_dir + 'output.xml',
                    log='NONE',
                    report='NONE',
                    stdout=stdout)
                stdout.seek(0, 0)
                cls.logger.info("\n" + stdout.read())
            cls.logger.info("ODL results were successfully generated")
            try:
                os.remove(stdout_file)
            except OSError:
                pass
            return True
        else:
            return False

    @classmethod
    def functest_run(cls):
        kclient = op_utils.get_keystone_client()
        keystone_url = kclient.service_catalog.url_for(
            service_type='identity', endpoint_type='publicURL')
        neutron_url = kclient.service_catalog.url_for(
            service_type='network', endpoint_type='publicURL')
        kwargs = {'keystoneip': urlparse.urlparse(keystone_url).hostname}
        kwargs['neutronip'] = urlparse.urlparse(neutron_url).hostname
        kwargs['odlip'] = kwargs['neutronip']
        kwargs['odlwebport'] = '8080'
        kwargs['odlrestconfport'] = '8181'
        kwargs['odlusername'] = 'admin'
        kwargs['odlpassword'] = 'admin'
        try:
            installer_type = os.environ['INSTALLER_TYPE']
            kwargs['osusername'] = os.environ['OS_USERNAME']
            kwargs['ostenantname'] = os.environ['OS_TENANT_NAME']
            kwargs['ospassword'] = os.environ['OS_PASSWORD']
            if installer_type == 'fuel':
                kwargs['odlwebport'] = '8282'
            elif installer_type == 'apex':
                kwargs['odlip'] = os.environ['SDN_CONTROLLER_IP']
                kwargs['odlwebport'] = '8181'
            elif installer_type == 'joid':
                kwargs['odlip'] = os.environ['SDN_CONTROLLER']
            elif installer_type == 'compass':
                kwargs['odlwebport'] = '8181'
            else:
                kwargs['odlip'] = os.environ['SDN_CONTROLLER_IP']
        except KeyError as e:
            cls.logger.error("Cannot run ODL testcases. Please check env var: "
                             "%s" % str(e))
            return False

        return cls.run(**kwargs)

    @classmethod
    def push_to_db(cls):
        try:
            result = ExecutionResult(cls.res_dir + 'output.xml')
            visitor = ODLResultVisitor()
            result.visit(visitor)
            start_time = timestamp_to_secs(result.suite.starttime)
            stop_time = timestamp_to_secs(result.suite.endtime)
            details = {}
            details['description'] = result.suite.name
            details['tests'] = visitor.get_data()
            if not ft_utils.push_results_to_db(
                    "functest", "odl", start_time, stop_time,
                    result.suite.status, details):
                cls.logger.error("Cannot push ODL results to DB")
                return False
            else:
                cls.logger.info("ODL results were successfully pushed to DB")
                return True
        except RobotError as e:
            cls.logger.error("Run tests before publishing: %s" % e.message)


if __name__ == '__main__':
    parser = argparse.ArgumentParser()
    parser.add_argument('-k', '--keystoneip',
                        help='Keystone IP',
                        default='127.0.0.1')
    parser.add_argument('-n', '--neutronip',
                        help='Neutron IP',
                        default='127.0.0.1')
    parser.add_argument('-a', '--osusername',
                        help='Username for OpenStack',
                        default='admin')
    parser.add_argument('-b', '--ostenantname',
                        help='Tenantname for OpenStack',
                        default='admin')
    parser.add_argument('-c', '--ospassword',
                        help='Password for OpenStack',
                        default='admin')
    parser.add_argument('-o', '--odlip',
                        help='OpenDaylight IP',
                        default='127.0.0.1')
    parser.add_argument('-w', '--odlwebport',
                        help='OpenDaylight Web Portal Port',
                        default='8080')
    parser.add_argument('-r', '--odlrestconfport',
                        help='OpenDaylight RESTConf Port',
                        default='8181')
    parser.add_argument('-d', '--odlusername',
                        help='Username for ODL',
                        default='admin')
    parser.add_argument('-e', '--odlpassword',
                        help='Password for ODL',
                        default='admin')
    parser.add_argument('-p', '--pushtodb',
                        help='Push results to DB',
                        action='store_true')

    args = vars(parser.parse_args())
    if not ODLTestCases.run(**args):
        sys.exit(os.EX_SOFTWARE)
    if args['pushtodb']:
        sys.exit(not ODLTestCases.push_to_db())
    sys.exit(os.EX_OK)