import array
import copy
import os
import sys
import tempfile

from PyQt5.QtGui import QIcon
from tests.QtTestCase import QtTestCase
from tests.utils_testing import get_path_for_data_file
from urh import settings
from urh.dev.PCAP import PCAP
from urh.signalprocessing.ProtocolAnalyzer import ProtocolAnalyzer
from urh.signalprocessing.Signal import Signal
from urh.util import util
from urh.util.Logger import logger
from urh.cythonext import util as c_util


class TestUtil(QtTestCase):
    def test_set_icon_theme(self):
        settings.write("icon_theme_index", 0)
        util.set_icon_theme()

        self.assertEqual(QIcon.themeName(), "oxy")

        settings.write("icon_theme_index", 1)
        util.set_icon_theme()

        if sys.platform == "linux":
            self.assertNotEqual(QIcon.themeName(), "oxy")
        else:
            self.assertEqual(QIcon.themeName(), "oxy")

    def test_set_shared_lib_path(self):
        before = os.environ["PATH"]
        util.set_shared_library_path()

    def test_create_textbox_dialog(self):
        dialog = util.create_textbox_dialog("Test content", "Test title", parent=self.form)
        self.assertEqual(dialog.windowTitle(), "Test title")
        self.assertEqual(dialog.layout().itemAt(0).widget().toPlainText(), "Test content")
        dialog.close()

    def test_get_receive_buffer_size(self):
        settings.OVERWRITE_RECEIVE_BUFFER_SIZE = None
        ns = settings.get_receive_buffer_size(resume_on_full_receive_buffer=True, spectrum_mode=True)
        self.assertEqual(ns, settings.SPECTRUM_BUFFER_SIZE)

        ns = settings.get_receive_buffer_size(resume_on_full_receive_buffer=True, spectrum_mode=False)
        self.assertEqual(ns, settings.SNIFF_BUFFER_SIZE)

        ns1 = settings.get_receive_buffer_size(resume_on_full_receive_buffer=False, spectrum_mode=True)
        ns2 = settings.get_receive_buffer_size(resume_on_full_receive_buffer=False, spectrum_mode=False)
        self.assertEqual(len(str(ns1)), len(str(ns2)))

    def test_write_pcap(self):
        signal = Signal(get_path_for_data_file("ask.complex"), "ASK-Test")
        signal.modulation_type = "ASK"
        signal.samples_per_symbol = 295
        signal.center = -0.1667
        self.assertEqual(signal.num_samples, 13710)

        proto_analyzer = ProtocolAnalyzer(signal)
        proto_analyzer.get_protocol_from_signal()
        self.assertEqual(proto_analyzer.decoded_hex_str[0], "b25b6db6c80")

        proto_analyzer.messages.append(copy.deepcopy(proto_analyzer.messages[0]))
        proto_analyzer.messages.append(copy.deepcopy(proto_analyzer.messages[0]))
        proto_analyzer.messages.append(copy.deepcopy(proto_analyzer.messages[0]))

        pcap = PCAP()
        pcap.write_packets(proto_analyzer.messages, os.path.join(tempfile.gettempdir(), "test.pcap"), 1e6)

    def test_de_bruijn_fuzzing(self):
        self.assertEqual(c_util.de_bruijn(3), array.array("B", [0, 0, 0, 1, 0, 1, 1, 1]))
        self.assertEqual(c_util.de_bruijn(4), array.array("B", [0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 1]))

    def test_native_backends_installed(self):
        from urh.util import util

        if not util.get_shared_library_path():
            logger.info("Shared library dir not found, skipping check of native device extensions")
            return

        util.set_shared_library_path()

        # noinspection PyUnresolvedReferences
        from urh.dev.native.lib import airspy

        # noinspection PyUnresolvedReferences
        from urh.dev.native.lib import bladerf

        # noinspection PyUnresolvedReferences
        from urh.dev.native.lib import hackrf

        # noinspection PyUnresolvedReferences
        from urh.dev.native.lib import rtlsdr

        # noinspection PyUnresolvedReferences
        from urh.dev.native.lib import limesdr

        # noinspection PyUnresolvedReferences
        from urh.dev.native.lib import plutosdr

        # noinspection PyUnresolvedReferences
        from urh.dev.native.lib import usrp

        if sys.platform != "darwin":
            # noinspection PyUnresolvedReferences
            from urh.dev.native.lib import sdrplay
        self.assertTrue(True)