import unittest

from aioice import Candidate


class CandidateTest(unittest.TestCase):
    def test_can_pair_ipv4(self):
        candidate_a = Candidate.from_sdp(
            "6815297761 1 udp 659136 1.2.3.4 31102 typ host generation 0"
        )
        candidate_b = Candidate.from_sdp(
            "6815297761 1 udp 659136 1.2.3.4 12345 typ host generation 0"
        )
        self.assertTrue(candidate_a.can_pair_with(candidate_b))

    def test_can_pair_ipv4_case_insensitive(self):
        candidate_a = Candidate.from_sdp(
            "6815297761 1 udp 659136 1.2.3.4 31102 typ host generation 0"
        )
        candidate_b = Candidate.from_sdp(
            "6815297761 1 UDP 659136 1.2.3.4 12345 typ host generation 0"
        )
        self.assertTrue(candidate_a.can_pair_with(candidate_b))

    def test_can_pair_ipv6(self):
        candidate_a = Candidate.from_sdp(
            "6815297761 1 udp 659136 2a02:0db8:85a3:0000:0000:8a2e:0370:7334 31102"
            " typ host generation 0"
        )
        candidate_b = Candidate.from_sdp(
            "6815297761 1 udp 659136 2a02:0db8:85a3:0000:0000:8a2e:0370:7334 12345"
            " typ host generation 0"
        )
        self.assertTrue(candidate_a.can_pair_with(candidate_b))

    def test_cannot_pair_ipv4_ipv6(self):
        candidate_a = Candidate.from_sdp(
            "6815297761 1 udp 659136 1.2.3.4 31102 typ host generation 0"
        )
        candidate_b = Candidate.from_sdp(
            "6815297761 1 udp 659136 2a02:0db8:85a3:0000:0000:8a2e:0370:7334 12345"
            " typ host generation 0"
        )
        self.assertFalse(candidate_a.can_pair_with(candidate_b))

    def test_cannot_pair_different_components(self):
        candidate_a = Candidate.from_sdp(
            "6815297761 1 udp 659136 1.2.3.4 31102 typ host generation 0"
        )
        candidate_b = Candidate.from_sdp(
            "6815297761 2 udp 659136 1.2.3.4 12345 typ host generation 0"
        )
        self.assertFalse(candidate_a.can_pair_with(candidate_b))

    def test_cannot_pair_different_transports(self):
        candidate_a = Candidate.from_sdp(
            "6815297761 1 udp 659136 1.2.3.4 31102 typ host generation 0"
        )
        candidate_b = Candidate.from_sdp(
            "6815297761 1 tcp 659136 1.2.3.4 12345 typ host generation 0 tcptype active"
        )
        self.assertFalse(candidate_a.can_pair_with(candidate_b))

    def test_from_sdp_udp(self):
        candidate = Candidate.from_sdp(
            "6815297761 1 udp 659136 1.2.3.4 31102 typ host generation 0"
        )
        self.assertEqual(candidate.foundation, "6815297761")
        self.assertEqual(candidate.component, 1)
        self.assertEqual(candidate.transport, "udp")
        self.assertEqual(candidate.priority, 659136)
        self.assertEqual(candidate.host, "1.2.3.4")
        self.assertEqual(candidate.port, 31102)
        self.assertEqual(candidate.type, "host")
        self.assertEqual(candidate.generation, 0)

        self.assertEqual(
            candidate.to_sdp(),
            "6815297761 1 udp 659136 1.2.3.4 31102 typ host generation 0",
        )

    def test_from_sdp_udp_srflx(self):
        candidate = Candidate.from_sdp(
            "1 1 UDP 1686052863 1.2.3.4 42705 typ srflx raddr 192.168.1.101 rport 42705"
        )
        self.assertEqual(candidate.foundation, "1")
        self.assertEqual(candidate.component, 1)
        self.assertEqual(candidate.transport, "UDP")
        self.assertEqual(candidate.priority, 1686052863)
        self.assertEqual(candidate.host, "1.2.3.4")
        self.assertEqual(candidate.port, 42705)
        self.assertEqual(candidate.type, "srflx")
        self.assertEqual(candidate.related_address, "192.168.1.101")
        self.assertEqual(candidate.related_port, 42705)
        self.assertEqual(candidate.generation, None)

        self.assertEqual(
            candidate.to_sdp(),
            "1 1 UDP 1686052863 1.2.3.4 42705 typ srflx raddr 192.168.1.101 "
            "rport 42705",
        )

    def test_from_sdp_tcp(self):
        candidate = Candidate.from_sdp(
            "1936595596 1 tcp 1518214911 1.2.3.4 9 typ host "
            "tcptype active generation 0 network-id 1 network-cost 10"
        )
        self.assertEqual(candidate.foundation, "1936595596")
        self.assertEqual(candidate.component, 1)
        self.assertEqual(candidate.transport, "tcp")
        self.assertEqual(candidate.priority, 1518214911)
        self.assertEqual(candidate.host, "1.2.3.4")
        self.assertEqual(candidate.port, 9)
        self.assertEqual(candidate.type, "host")
        self.assertEqual(candidate.tcptype, "active")
        self.assertEqual(candidate.generation, 0)

        self.assertEqual(
            candidate.to_sdp(),
            "1936595596 1 tcp 1518214911 1.2.3.4 9 typ host tcptype active "
            "generation 0",
        )

    def test_from_sdp_no_generation(self):
        candidate = Candidate.from_sdp("6815297761 1 udp 659136 1.2.3.4 31102 typ host")

        self.assertEqual(candidate.foundation, "6815297761")
        self.assertEqual(candidate.component, 1)
        self.assertEqual(candidate.transport, "udp")
        self.assertEqual(candidate.priority, 659136)
        self.assertEqual(candidate.host, "1.2.3.4")
        self.assertEqual(candidate.port, 31102)
        self.assertEqual(candidate.type, "host")
        self.assertEqual(candidate.generation, None)

        self.assertEqual(
            candidate.to_sdp(), "6815297761 1 udp 659136 1.2.3.4 31102 typ host"
        )

    def test_from_sdp_truncated(self):
        with self.assertRaises(ValueError):
            Candidate.from_sdp("6815297761 1 udp 659136 1.2.3.4 31102 typ")

    def test_repr(self):
        candidate = Candidate.from_sdp(
            "6815297761 1 udp 659136 1.2.3.4 31102 typ host generation 0"
        )
        self.assertEqual(
            repr(candidate),
            "Candidate(6815297761 1 udp 659136 1.2.3.4 31102 typ host generation 0)",
        )