# -*- coding: utf-8 -*-
# vim: autoindent shiftwidth=4 expandtab textwidth=120 tabstop=4 softtabstop=4

###############################################################################
# OpenLP - Open Source Lyrics Projection                                      #
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# Copyright (c) 2008-2015 OpenLP Developers                                   #
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"""
Package to test the openlp.core.projectors.pjlink command routing.
"""

from unittest import TestCase
from unittest.mock import patch, MagicMock

import openlp.core.projectors.pjlink
from openlp.core.projectors import PJLink, Projector
from openlp.core.projectors.constants import PJLINK_ERRORS, \
    E_AUTHENTICATION, E_PARAMETER, E_PROJECTOR, E_UNAVAILABLE, E_UNDEFINED

'''
from openlp.core.projectors.constants import ERROR_STRING, PJLINK_ERST_DATA, PJLINK_ERST_STATUS, \
    PJLINK_POWR_STATUS, PJLINK_VALID_CMD, E_WARN, E_ERROR, S_OFF, S_STANDBY, S_ON
'''
from tests.resources.projector.data import TEST_PIN, TEST1_DATA

pjlink_test = PJLink(Projector(**TEST1_DATA), pin=TEST_PIN, no_poll=True)
pjlink_test.ip = '127.0.0.1'


class TestPJLinkRouting(TestCase):
    """
    Tests for the PJLink module command routing
    """
    @patch.object(openlp.core.projectors.pjlink, 'log')
    def test_process_command_call_clss(self, mock_log):
        """
        Test process_command calls proper function
        """
        # GIVEN: Test object
        pjlink = pjlink_test
        log_text = '(127.0.0.1) Calling function for CLSS'
        mock_log.reset_mock()
        mock_process_clss = MagicMock()
        pjlink.pjlink_functions['CLSS'] = mock_process_clss

        # WHEN: process_command is called with valid function and data
        pjlink.process_command(cmd='CLSS', data='1')

        # THEN: Process method should have been called properly
        mock_log.debug.assert_called_with(log_text)
        mock_process_clss.assert_called_with('1')

    @patch.object(pjlink_test, 'change_status')
    @patch.object(openlp.core.projectors.pjlink, 'log')
    def test_process_command_err1(self, mock_log, mock_change_status):
        """
        Test ERR1 - Undefined projector function
        """
        # GIVEN: Test object
        pjlink = pjlink_test
        log_text = '(127.0.0.1) Projector returned error "ERR1"'
        mock_change_status.reset_mock()
        mock_log.reset_mock()

        # WHEN: process_command called with ERR1
        pjlink.process_command(cmd='CLSS', data=PJLINK_ERRORS[E_UNDEFINED])

        # THEN: Error should be logged and status_change should be called
        mock_change_status.assert_called_once_with(E_UNDEFINED, 'Undefined Command: "CLSS"')
        mock_log.error.assert_called_with(log_text)

    @patch.object(pjlink_test, 'change_status')
    @patch.object(openlp.core.projectors.pjlink, 'log')
    def test_process_command_err2(self, mock_log, mock_change_status):
        """
        Test ERR2 - Parameter Error
        """
        # GIVEN: Test object
        pjlink = pjlink_test
        log_text = '(127.0.0.1) Projector returned error "ERR2"'
        mock_change_status.reset_mock()
        mock_log.reset_mock()

        # WHEN: process_command called with ERR2
        pjlink.process_command(cmd='CLSS', data=PJLINK_ERRORS[E_PARAMETER])

        # THEN: Error should be logged and status_change should be called
        mock_change_status.assert_called_once_with(E_PARAMETER)
        mock_log.error.assert_called_with(log_text)

    @patch.object(pjlink_test, 'change_status')
    @patch.object(openlp.core.projectors.pjlink, 'log')
    def test_process_command_err3(self, mock_log, mock_change_status):
        """
        Test ERR3 - Unavailable error
        """
        # GIVEN: Test object
        pjlink = pjlink_test
        log_text = '(127.0.0.1) Projector returned error "ERR3"'
        mock_change_status.reset_mock()
        mock_log.reset_mock()

        # WHEN: process_command called with ERR3
        pjlink.process_command(cmd='CLSS', data=PJLINK_ERRORS[E_UNAVAILABLE])

        # THEN: Error should be logged and status_change should be called
        mock_change_status.assert_called_once_with(E_UNAVAILABLE)
        mock_log.error.assert_called_with(log_text)

    @patch.object(pjlink_test, 'change_status')
    @patch.object(openlp.core.projectors.pjlink, 'log')
    def test_process_command_err4(self, mock_log, mock_change_status):
        """
        Test ERR3 - Unavailable error
        """
        # GIVEN: Test object
        pjlink = pjlink_test
        log_text = '(127.0.0.1) Projector returned error "ERR4"'
        mock_change_status.reset_mock()
        mock_log.reset_mock()

        # WHEN: process_command called with ERR3
        pjlink.process_command(cmd='CLSS', data=PJLINK_ERRORS[E_PROJECTOR])

        # THEN: Error should be logged and status_change should be called
        mock_change_status.assert_called_once_with(E_PROJECTOR)
        mock_log.error.assert_called_with(log_text)

    @patch.object(pjlink_test, 'projectorAuthentication')
    @patch.object(pjlink_test, 'change_status')
    @patch.object(pjlink_test, 'disconnect_from_host')
    @patch.object(openlp.core.projectors.pjlink, 'log')
    def test_process_command_erra(self, mock_log, mock_disconnect, mock_change_status, mock_err_authenticate):
        """
        Test ERRA - Authentication Error
        """
        # GIVEN: Test object
        pjlink = pjlink_test
        log_text = '(127.0.0.1) Projector returned error "ERRA"'
        mock_change_status.reset_mock()
        mock_log.reset_mock()

        # WHEN: process_command called with ERRA
        pjlink.process_command(cmd='CLSS', data=PJLINK_ERRORS[E_AUTHENTICATION])

        # THEN: Error should be logged and several methods should be called
        self.assertTrue(mock_disconnect.called, 'disconnect_from_host should have been called')
        mock_change_status.assert_called_once_with(E_AUTHENTICATION)
        mock_log.error.assert_called_with(log_text)

    @patch.object(openlp.core.projectors.pjlink, 'log')
    def test_process_command_future(self, mock_log):
        """
        Test command valid but no method to process yet
        """
        # GIVEN: Test object
        pjlink = pjlink_test
        log_text = "(127.0.0.1) Unable to process command='CLSS' (Future option)"
        mock_log.reset_mock()
        # Remove a valid command so we can test valid command but not available yet
        pjlink.pjlink_functions.pop('CLSS')

        # WHEN: process_command called with an unknown command
        with patch.object(pjlink, 'pjlink_functions') as mock_functions:
            pjlink.process_command(cmd='CLSS', data='DONT CARE')

        # THEN: Error should be logged and no command called
        self.assertFalse(mock_functions.called, 'Should not have gotten to the end of the method')
        mock_log.warning.assert_called_once_with(log_text)

    @patch.object(pjlink_test, 'pjlink_functions')
    @patch.object(openlp.core.projectors.pjlink, 'log')
    def test_process_command_invalid(self, mock_log, mock_functions):
        """
        Test not a valid command
        """
        # GIVEN: Test object
        pjlink = pjlink_test
        mock_functions.reset_mock()
        mock_log.reset_mock()

        # WHEN: process_command called with an unknown command
        pjlink.process_command(cmd='Unknown', data='Dont Care')
        log_text = "(127.0.0.1) Ignoring command='Unknown' (Invalid/Unknown)"

        # THEN: Error should be logged and no command called
        self.assertFalse(mock_functions.called, 'Should not have gotten to the end of the method')
        mock_log.error.assert_called_once_with(log_text)

    @patch.object(pjlink_test, 'pjlink_functions')
    @patch.object(openlp.core.projectors.pjlink, 'log')
    def test_process_command_ok(self, mock_log, mock_functions):
        """
        Test command returned success
        """
        # GIVEN: Test object
        pjlink = pjlink_test
        mock_functions.reset_mock()
        mock_log.reset_mock()

        # WHEN: process_command called with an unknown command
        pjlink.process_command(cmd='CLSS', data='OK')
        log_text = '(127.0.0.1) Command "CLSS" returned OK'

        # THEN: Error should be logged and no command called
        self.assertFalse(mock_functions.called, 'Should not have gotten to the end of the method')
        self.assertEqual(mock_log.debug.call_count, 2, 'log.debug() should have been called twice')
        # Although we called it twice, only the last log entry is saved
        mock_log.debug.assert_called_with(log_text)