#!/usr/bin/env python
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import time
import unittest

import config
import mle
import node

LEADER = 1
ROUTER1 = 2
ROUTER2 = 3
ROUTER3 = 4
ROUTER4 = 5
SNIFFER = 6


class Cert_5_1_08_RouterAttachConnectivity(unittest.TestCase):

    def setUp(self):
        self.nodes = {}
        for i in range(1, 6):
            self.nodes[i] = node.Node(i)

        self.nodes[LEADER].set_panid(0xface)
        self.nodes[LEADER].set_mode('rsdn')
        self.nodes[LEADER].add_whitelist(self.nodes[ROUTER1].get_addr64())
        self.nodes[LEADER].add_whitelist(self.nodes[ROUTER2].get_addr64())
        self.nodes[LEADER].add_whitelist(self.nodes[ROUTER3].get_addr64())
        self.nodes[LEADER].enable_whitelist()

        self.nodes[ROUTER1].set_panid(0xface)
        self.nodes[ROUTER1].set_mode('rsdn')
        self.nodes[ROUTER1].add_whitelist(self.nodes[LEADER].get_addr64())
        self.nodes[ROUTER1].add_whitelist(self.nodes[ROUTER3].get_addr64())
        self.nodes[ROUTER1].enable_whitelist()
        self.nodes[ROUTER1].set_router_selection_jitter(1)

        self.nodes[ROUTER2].set_panid(0xface)
        self.nodes[ROUTER2].set_mode('rsdn')
        self.nodes[ROUTER2].add_whitelist(self.nodes[LEADER].get_addr64())
        self.nodes[ROUTER2].add_whitelist(self.nodes[ROUTER4].get_addr64())
        self.nodes[ROUTER2].enable_whitelist()
        self.nodes[ROUTER2].set_router_selection_jitter(1)

        self.nodes[ROUTER3].set_panid(0xface)
        self.nodes[ROUTER3].set_mode('rsdn')
        self.nodes[ROUTER3].add_whitelist(self.nodes[LEADER].get_addr64())
        self.nodes[ROUTER3].add_whitelist(self.nodes[ROUTER1].get_addr64())
        self.nodes[ROUTER3].add_whitelist(self.nodes[ROUTER4].get_addr64())
        self.nodes[ROUTER3].enable_whitelist()
        self.nodes[ROUTER3].set_router_selection_jitter(1)

        self.nodes[ROUTER4].set_panid(0xface)
        self.nodes[ROUTER4].set_mode('rsdn')
        self.nodes[ROUTER4].add_whitelist(self.nodes[ROUTER2].get_addr64())
        self.nodes[ROUTER4].add_whitelist(self.nodes[ROUTER3].get_addr64())
        self.nodes[ROUTER4].enable_whitelist()
        self.nodes[ROUTER4].set_router_selection_jitter(1)

        self.sniffer = config.create_default_thread_sniffer(SNIFFER)
        self.sniffer.start()

    def tearDown(self):
        self.sniffer.stop()
        del self.sniffer

        for node in list(self.nodes.values()):
            node.stop()
        del self.nodes

    def test(self):
        self.nodes[LEADER].start()
        self.nodes[LEADER].set_state('leader')
        self.assertEqual(self.nodes[LEADER].get_state(), 'leader')
        time.sleep(4)

        for i in range(2, 6):
            self.nodes[i].start()
            time.sleep(5)
            self.assertEqual(self.nodes[i].get_state(), 'router')

        leader_messages = self.sniffer.get_messages_sent_by(LEADER)
        router1_messages = self.sniffer.get_messages_sent_by(ROUTER1)
        router2_messages = self.sniffer.get_messages_sent_by(ROUTER2)
        router3_messages = self.sniffer.get_messages_sent_by(ROUTER3)
        router4_messages = self.sniffer.get_messages_sent_by(ROUTER4)

        # 1 - Leader, Router1, Router2, Router3
        leader_messages.next_mle_message(mle.CommandType.ADVERTISEMENT)
        router1_messages.next_mle_message(mle.CommandType.ADVERTISEMENT)
        router2_messages.next_mle_message(mle.CommandType.ADVERTISEMENT)
        router3_messages.next_mle_message(mle.CommandType.ADVERTISEMENT)

        # 2 - Router4
        msg = router4_messages.next_mle_message(mle.CommandType.PARENT_REQUEST)
        msg.assertSentWithHopLimit(255)
        msg.assertSentToDestinationAddress("ff02::2")
        msg.assertMleMessageContainsTlv(mle.Mode)
        msg.assertMleMessageContainsTlv(mle.Challenge)
        msg.assertMleMessageContainsTlv(mle.ScanMask)
        msg.assertMleMessageContainsTlv(mle.Version)

        scan_mask_tlv = msg.get_mle_message_tlv(mle.ScanMask)
        self.assertEqual(1, scan_mask_tlv.router)
        self.assertEqual(0, scan_mask_tlv.end_device)

        # 3 - Router2, Router3
        msg = router2_messages.next_mle_message(mle.CommandType.PARENT_RESPONSE)
        msg.assertSentToNode(self.nodes[ROUTER4])

        msg = router3_messages.next_mle_message(mle.CommandType.PARENT_RESPONSE)
        msg.assertSentToNode(self.nodes[ROUTER4])

        # 4 - Router4
        msg = router4_messages.next_mle_message(mle.CommandType.CHILD_ID_REQUEST)
        msg.assertSentToNode(self.nodes[ROUTER3])
        msg.assertMleMessageContainsTlv(mle.Response)
        msg.assertMleMessageContainsTlv(mle.LinkLayerFrameCounter)
        msg.assertMleMessageContainsOptionalTlv(mle.MleFrameCounter)
        msg.assertMleMessageContainsTlv(mle.Mode)
        msg.assertMleMessageContainsTlv(mle.Timeout)
        msg.assertMleMessageContainsTlv(mle.Version)
        msg.assertMleMessageContainsTlv(mle.TlvRequest)
        msg.assertMleMessageDoesNotContainTlv(mle.AddressRegistration)


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