import unittest
import types

import core.theme
import core.event
import core.widget

class theme(unittest.TestCase):
    def setUp(self):
        core.event.clear()
        self.invalidThemeName = 'this-theme-does-not-exist'
        self.validThemeName = 'default'
        self.defaultsTheme = {
            'defaults': {
                'fg': 'red', 'bg': 'black'
            }
        }
        self.cycleTheme = {
            'cycle': [
                { 'fg': 'red', 'bg': 'black' },
                { 'fg': 'black', 'bg': 'red' },
                { 'fg': 'white', 'bg': 'blue' }
            ]
        }
        self.colorTheme = {
            'colors': [{
                'red': '#ff0000', 'blue': '#0000ff'
            }]
        }
        self.walTheme = {
            'colors': ['wal']
        }
        self.cycleValueTheme = {
            'defaults': {
                'fg': [ 'red', 'green', 'blue' ]
            }
        }
        self.stateTheme = {
            'warning': { 'fg': 'yellow' },
            'critical': { 'fg': 'red' }
        }

    def test_invalid_theme(self):
        with self.assertRaises(RuntimeError):
            core.theme.Theme(self.invalidThemeName)

    def test_valid_theme(self):
        theme = core.theme.Theme(self.validThemeName)
        self.assertEqual(self.validThemeName, theme.name)

    def test_defaults(self):
        theme = core.theme.Theme(raw_data=self.defaultsTheme)
        self.assertEqual(self.defaultsTheme['defaults']['fg'], theme.get('fg'))
        self.assertEqual(self.defaultsTheme['defaults']['bg'], theme.get('bg'))

    def test_cycle(self):
        theme = core.theme.Theme(raw_data=self.cycleTheme)
        self.assertEqual(None, theme.get('prev-bg'))
        self.assertEqual(self.cycleTheme['cycle'][0]['fg'], theme.get('fg'))
        self.assertEqual(self.cycleTheme['cycle'][0]['bg'], theme.get('bg'))
        core.event.trigger('next-widget')
        self.assertEqual(self.cycleTheme['cycle'][0]['bg'], theme.get('bg', 'previous'))
        core.event.trigger('next-widget')
        self.assertEqual(self.cycleTheme['cycle'][2]['fg'], theme.get('fg'))
        self.assertEqual(self.cycleTheme['cycle'][2]['bg'], theme.get('bg'))

        with unittest.mock.patch('core.output.sys.stdout'):
            core.event.trigger('update')
            self.assertEqual(self.cycleTheme['cycle'][0]['fg'], theme.get('fg'))
            self.assertEqual(self.cycleTheme['cycle'][0]['bg'], theme.get('bg'))

    def test_custom_iconset(self):
        theme = core.theme.Theme(raw_data=self.defaultsTheme)
        self.assertNotEqual('aaa', theme.get('padding'))
        theme = core.theme.Theme(raw_data=self.defaultsTheme, iconset={
            'defaults': { 'padding': 'aaa' }
        })
        self.assertEqual('aaa', theme.get('padding'))

    def test_colors(self):
        theme = core.theme.Theme(raw_data=self.defaultsTheme)
        self.assertEqual({}, theme.keywords())
        theme = core.theme.Theme(raw_data=self.colorTheme)
        self.assertEqual(self.colorTheme['colors'][0], theme.keywords())

    def test_wal_colors(self):
        with unittest.mock.patch('core.theme.io') as io:
            io.open.return_value.__enter__.return_value.read.return_value='''
                { "colors": { "red": "#ff0000" } }
            '''

            theme = core.theme.Theme(raw_data=self.walTheme)
            self.assertEqual({'red': '#ff0000'}, theme.keywords())

    def test_wal_special(self):
        with unittest.mock.patch('core.theme.io') as io:
            io.open.return_value.__enter__.return_value.read.return_value='''
                { "special": { "background": "#ff0000" } }
            '''

            theme = core.theme.Theme(raw_data=self.walTheme)
            self.assertEqual({'background': '#ff0000'}, theme.keywords())

    def test_cycle_value(self):
        widget = core.widget.Widget()
        expected = self.cycleValueTheme['defaults']['fg']
        theme = core.theme.Theme(raw_data=self.cycleValueTheme)

        for i in range(0, len(expected)*3):
            self.assertEqual(expected[i%len(expected)], theme.get('fg', widget))
            self.assertEqual(expected[i%len(expected)], theme.get('fg', widget)) # ensure multiple invocations are OK
            core.event.trigger('update')

    def test_state(self):
        widget = core.widget.Widget()
        theme = core.theme.Theme(raw_data=self.stateTheme)

        self.assertEqual(None, theme.get('fg', widget))

        widget.state = types.MethodType(lambda self: ['warning'], widget)
        self.assertEqual(self.stateTheme['warning']['fg'], theme.get('fg', widget))

        widget.state = types.MethodType(lambda self: ['critical'], widget)
        self.assertEqual(self.stateTheme['critical']['fg'], theme.get('fg', widget))

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