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

import node
import config
import command

LEADER = 1
DUT_ROUTER1 = 2
SED1 = 3
ED1 = 4
ED2 = 5
ED3 = 6
ED4 = 7

MTDS = [SED1, ED1, ED2, ED3, ED4]

class Cert_5_3_4_AddressMapCache(unittest.TestCase):
    def setUp(self):
        self.simulator = config.create_default_simulator()

        self.nodes = {}
        for i in range(1,8):
            self.nodes[i] = node.Node(i, (i in MTDS), simulator=self.simulator)

        self.nodes[LEADER].set_panid(0xface)
        self.nodes[LEADER].set_mode('rsdn')
        self.nodes[LEADER].add_whitelist(self.nodes[DUT_ROUTER1].get_addr64())
        self.nodes[LEADER].add_whitelist(self.nodes[ED1].get_addr64())
        self.nodes[LEADER].add_whitelist(self.nodes[ED2].get_addr64())
        self.nodes[LEADER].add_whitelist(self.nodes[ED3].get_addr64())
        self.nodes[LEADER].add_whitelist(self.nodes[ED4].get_addr64())
        self.nodes[LEADER].enable_whitelist()

        self.nodes[DUT_ROUTER1].set_panid(0xface)
        self.nodes[DUT_ROUTER1].set_mode('rsdn')
        self.nodes[DUT_ROUTER1].add_whitelist(self.nodes[LEADER].get_addr64())
        self.nodes[DUT_ROUTER1].add_whitelist(self.nodes[SED1].get_addr64())
        self.nodes[DUT_ROUTER1].enable_whitelist()
        self.nodes[DUT_ROUTER1].set_router_selection_jitter(1)

        self.nodes[SED1].set_panid(0xface)
        self.nodes[SED1].set_mode('s')
        self.nodes[SED1].add_whitelist(self.nodes[DUT_ROUTER1].get_addr64())

        # Set the SED1's timeout in order to receive the icmp reply when keep alive with DUT_ROUTER.
        self.nodes[SED1].set_timeout(5)
        self.nodes[SED1].enable_whitelist()

        for ED in [ED1, ED2, ED3, ED4]:
            self.nodes[ED].set_panid(0xface)
            self.nodes[ED].set_mode('rsn')
            self.nodes[ED].add_whitelist(self.nodes[LEADER].get_addr64())
            self.nodes[ED].enable_whitelist()

    def tearDown(self):
        for node in list(self.nodes.values()):
            node.stop()
            node.destroy()
        self.simulator.stop()

    def test(self):
        # 1
        self.nodes[LEADER].start()
        self.simulator.go(5)
        self.assertEqual(self.nodes[LEADER].get_state(), 'leader')

        self.nodes[DUT_ROUTER1].start()
        for i in MTDS:
            self.nodes[i].start()
        self.simulator.go(5)

        self.assertEqual(self.nodes[DUT_ROUTER1].get_state(), 'router')

        for i in MTDS:
            self.assertEqual(self.nodes[i].get_state(), 'child')

        # This method flushes the message queue so calling this method again will return only the newly logged messages.
        dut_messages = self.simulator.get_messages_sent_by(DUT_ROUTER1)

        # 2
        for ED in [ED1, ED2, ED3, ED4]:
            ed_mleid = self.nodes[ED].get_ip6_address(config.ADDRESS_TYPE.ML_EID)
            self.assertTrue(self.nodes[SED1].ping(ed_mleid))
            self.simulator.go(5)

            # Verify DUT_ROUTER1 generated an Address Query Request to find each node's RLOC.
            dut_messages = self.simulator.get_messages_sent_by(DUT_ROUTER1)
            msg = dut_messages.next_coap_message('0.02', '/a/aq')
            command.check_address_query(msg, self.nodes[DUT_ROUTER1], config.REALM_LOCAL_ALL_ROUTERS_ADDRESS)

        # 3 & 4
        # This method flushes the message queue so calling this method again will return only the newly logged messages.
        dut_messages = self.simulator.get_messages_sent_by(DUT_ROUTER1)

        for ED in [ED1, ED2, ED3, ED4]:
            ed_mleid = self.nodes[ED].get_ip6_address(config.ADDRESS_TYPE.ML_EID)
            self.assertTrue(self.nodes[SED1].ping(ed_mleid))
            self.simulator.go(5)

            # Verify DUT_ROUTER1 didn't generate an Address Query Request.
            dut_messages = self.simulator.get_messages_sent_by(DUT_ROUTER1)
            msg = dut_messages.next_coap_message('0.02', '/a/aq', False)
            assert msg is None, "Error: The DUT sent an unexpected Address Query Request"

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