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

import config
import mle
import network_layer
import node

LEADER = 1
ROUTER1 = 2
SNIFFER = 3


class Cert_5_1_06_RemoveRouterId(unittest.TestCase):

    def setUp(self):
        self.nodes = {}
        for i in range(1, 3):
            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].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].enable_whitelist()
        self.nodes[ROUTER1].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)

        self.nodes[ROUTER1].start()
        time.sleep(5)
        self.assertEqual(self.nodes[ROUTER1].get_state(), 'router')
        rloc16 = self.nodes[ROUTER1].get_addr16()

        for addr in self.nodes[ROUTER1].get_addrs():
            self.assertTrue(self.nodes[LEADER].ping(addr))

        self.nodes[LEADER].release_router_id(rloc16 >> 10)
        time.sleep(5)
        self.assertEqual(self.nodes[ROUTER1].get_state(), 'router')

        for addr in self.nodes[ROUTER1].get_addrs():
            self.assertTrue(self.nodes[LEADER].ping(addr))

        leader_messages = self.sniffer.get_messages_sent_by(LEADER)
        router1_messages = self.sniffer.get_messages_sent_by(ROUTER1)

        # 1 - All
        leader_messages.next_mle_message(mle.CommandType.ADVERTISEMENT)

        router1_messages.next_mle_message(mle.CommandType.PARENT_REQUEST)
        leader_messages.next_mle_message(mle.CommandType.PARENT_RESPONSE)

        router1_messages.next_mle_message(mle.CommandType.CHILD_ID_REQUEST)
        leader_messages.next_mle_message(mle.CommandType.CHILD_ID_RESPONSE)

        msg = router1_messages.next_coap_message("0.02")
        msg.assertCoapMessageRequestUriPath("/a/as")

        msg = leader_messages.next_coap_message("2.04")

        # 3 - Router1
        router1_messages.next_mle_message(mle.CommandType.PARENT_REQUEST)
        leader_messages.next_mle_message(mle.CommandType.PARENT_RESPONSE)

        router1_messages.next_mle_message(mle.CommandType.CHILD_ID_REQUEST)
        msg = leader_messages.next_mle_message(mle.CommandType.CHILD_ID_RESPONSE)
        msg.assertSentToNode(self.nodes[ROUTER1])
            
        msg = router1_messages.next_coap_message(code="0.02", uri_path="/a/as")
        msg.assertCoapMessageContainsTlv(network_layer.MacExtendedAddress)
        msg.assertCoapMessageContainsTlv(network_layer.Status)

        msg = leader_messages.next_coap_message("2.04")
        msg.assertCoapMessageContainsTlv(network_layer.Status)
        msg.assertCoapMessageContainsOptionalTlv(network_layer.RouterMask)

        status_tlv = msg.get_coap_message_tlv(network_layer.Status)
        self.assertEqual(network_layer.StatusValues.SUCCESS, status_tlv.status)


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