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#     http://www.apache.org/licenses/LICENSE-2.0
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"""
Tests for Google Compute Engine Load Balancer Driver
"""
import sys
import unittest

from libcloud.common.google import GoogleBaseAuthConnection
from libcloud.compute.drivers.gce import (GCENodeDriver)
from libcloud.loadbalancer.drivers.gce import (GCELBDriver)
from libcloud.test.common.test_google import GoogleAuthMockHttp, GoogleTestCase
from libcloud.test.compute.test_gce import GCEMockHttp

from libcloud.test.secrets import GCE_PARAMS, GCE_KEYWORD_PARAMS


class GCELoadBalancerTest(GoogleTestCase):
    datacenter = 'us-central1-a'

    def setUp(self):
        GCEMockHttp.test = self
        GCELBDriver.connectionCls.conn_class = GCEMockHttp
        GCENodeDriver.connectionCls.conn_class = GCEMockHttp
        GoogleBaseAuthConnection.conn_class = GoogleAuthMockHttp
        GCEMockHttp.type = None
        kwargs = GCE_KEYWORD_PARAMS.copy()
        kwargs['auth_type'] = 'IA'
        kwargs['datacenter'] = self.datacenter
        self.driver = GCELBDriver(*GCE_PARAMS, **kwargs)

    def test_get_node_from_ip(self):
        ip = '23.236.58.15'
        expected_name = 'node-name'
        node = self.driver._get_node_from_ip(ip)
        self.assertEqual(node.name, expected_name)

        dummy_ip = '8.8.8.8'
        node = self.driver._get_node_from_ip(dummy_ip)
        self.assertTrue(node is None)

    def test_list_protocols(self):
        expected_protocols = ['TCP', 'UDP']
        protocols = self.driver.list_protocols()
        self.assertEqual(protocols, expected_protocols)

    def test_list_balancers(self):
        balancers = self.driver.list_balancers()
        balancers_all = self.driver.list_balancers(ex_region='all')
        balancer_name = 'lcforwardingrule'
        self.assertEqual(len(balancers), 2)
        self.assertEqual(len(balancers_all), 2)
        self.assertEqual(balancers[0].name, balancer_name)

    def test_create_balancer(self):
        balancer_name = 'libcloud-lb-demo-lb'
        tp_name = '%s-tp' % (balancer_name)
        port = '80'
        protocol = 'tcp'
        algorithm = None
        node0 = self.driver.gce.ex_get_node('libcloud-lb-demo-www-000',
                                            'us-central1-b')
        node1 = self.driver.gce.ex_get_node('libcloud-lb-demo-www-001',
                                            'us-central1-b')
        members = [node0, node1]
        balancer = self.driver.create_balancer(balancer_name, port, protocol,
                                               algorithm, members)
        self.assertEqual(balancer.name, balancer_name)
        self.assertEqual(balancer.extra['targetpool'].name, tp_name)
        self.assertEqual(len(balancer.list_members()), 3)

    def test_destory_balancer(self):
        balancer_name = 'lcforwardingrule'
        balancer = self.driver.get_balancer(balancer_name)
        destroyed = balancer.destroy()
        self.assertTrue(destroyed)

    def test_get_balancer(self):
        balancer_name = 'lcforwardingrule'
        tp_name = 'lctargetpool'
        balancer_ip = '173.255.119.224'
        balancer = self.driver.get_balancer(balancer_name)
        self.assertEqual(balancer.name, balancer_name)
        self.assertEqual(balancer.extra['forwarding_rule'].name, balancer_name)
        self.assertEqual(balancer.ip, balancer_ip)
        self.assertEqual(balancer.extra['targetpool'].name, tp_name)

    def test_attach_compute_node(self):
        node = self.driver.gce.ex_get_node('libcloud-lb-demo-www-001',
                                           'us-central1-b')
        balancer = self.driver.get_balancer('lcforwardingrule')
        member = self.driver._node_to_member(node, balancer)
        # Detach member first
        balancer.detach_member(member)
        self.assertEqual(len(balancer.list_members()), 1)
        # Attach Node
        balancer.attach_compute_node(node)
        self.assertEqual(len(balancer.list_members()), 2)

    def test_detach_attach_member(self):
        node = self.driver.gce.ex_get_node('libcloud-lb-demo-www-001',
                                           'us-central1-b')
        balancer = self.driver.get_balancer('lcforwardingrule')
        member = self.driver._node_to_member(node, balancer)

        # Check that balancer has 2 members
        self.assertEqual(len(balancer.list_members()), 2)

        # Remove a member and check that it now has 1 member
        balancer.detach_member(member)
        self.assertEqual(len(balancer.list_members()), 1)

        # Reattach member and check that it has 2 members again
        balancer.attach_member(member)
        self.assertEqual(len(balancer.list_members()), 2)

    def test_balancer_list_members(self):
        balancer = self.driver.get_balancer('lcforwardingrule')
        members = balancer.list_members()
        self.assertEqual(len(members), 2)
        member_ips = [m.ip for m in members]
        self.assertTrue('23.236.58.15' in member_ips)

    def test_ex_create_healthcheck(self):
        healthcheck_name = 'lchealthcheck'
        kwargs = {'host': 'lchost',
                  'path': '/lc',
                  'port': 8000,
                  'interval': 10,
                  'timeout': 10,
                  'unhealthy_threshold': 4,
                  'healthy_threshold': 3}
        hc = self.driver.ex_create_healthcheck(healthcheck_name, **kwargs)
        self.assertEqual(hc.name, healthcheck_name)
        self.assertEqual(hc.path, '/lc')
        self.assertEqual(hc.port, 8000)
        self.assertEqual(hc.interval, 10)

    def test_ex_list_healthchecks(self):
        healthchecks = self.driver.ex_list_healthchecks()
        self.assertEqual(len(healthchecks), 3)
        self.assertEqual(healthchecks[0].name, 'basic-check')

    def test_ex_balancer_detach_attach_healthcheck(self):
        healthcheck = self.driver.gce.ex_get_healthcheck(
            'libcloud-lb-demo-healthcheck')
        balancer = self.driver.get_balancer('lcforwardingrule')

        healthchecks = self.driver.ex_balancer_list_healthchecks(balancer)
        self.assertEqual(len(healthchecks), 1)
        # Detach Healthcheck
        detach_healthcheck = self.driver.ex_balancer_detach_healthcheck(
            balancer, healthcheck)
        self.assertTrue(detach_healthcheck)
        healthchecks = self.driver.ex_balancer_list_healthchecks(balancer)
        self.assertEqual(len(healthchecks), 0)

        # Reattach Healthcheck
        attach_healthcheck = self.driver.ex_balancer_attach_healthcheck(
            balancer, healthcheck)
        self.assertTrue(attach_healthcheck)
        healthchecks = self.driver.ex_balancer_list_healthchecks(balancer)
        self.assertEqual(len(healthchecks), 1)

    def test_ex_balancer_list_healthchecks(self):
        balancer = self.driver.get_balancer('lcforwardingrule')
        healthchecks = self.driver.ex_balancer_list_healthchecks(balancer)
        self.assertEqual(healthchecks[0].name, 'libcloud-lb-demo-healthcheck')

    def test_node_to_member(self):
        node = self.driver.gce.ex_get_node('libcloud-lb-demo-www-001',
                                           'us-central1-b')
        balancer = self.driver.get_balancer('lcforwardingrule')
        member = self.driver._node_to_member(node, balancer)
        self.assertEqual(member.ip, node.public_ips[0])
        self.assertEqual(member.id, node.name)
        self.assertEqual(member.port, balancer.port)

    def test_node_to_member_no_pub_ip(self):
        node = self.driver.gce.ex_get_node('libcloud-lb-nopubip-001',
                                           'us-central1-b')
        balancer = self.driver.get_balancer('lcforwardingrule')
        member = self.driver._node_to_member(node, balancer)
        self.assertIsNone(member.ip)

    def test_forwarding_rule_to_loadbalancer(self):
        fwr = self.driver.gce.ex_get_forwarding_rule('lcforwardingrule')
        balancer = self.driver._forwarding_rule_to_loadbalancer(fwr)
        self.assertEqual(fwr.name, balancer.name)
        self.assertEqual(fwr.address, balancer.ip)
        self.assertEqual(fwr.extra['portRange'], balancer.port)

if __name__ == '__main__':
    sys.exit(unittest.main())