# Copyright 2021 (c) Anna Schumaker.
import unittest
from gi.repository import GObject
from gi.repository import Gtk
from gi.repository import Gst
from . import controls
from . import scale

class FakePlayer(GObject.GObject):
    def __init__(self):
        GObject.GObject.__init__(self)
        self.prev = False
        self.nxt = False
        self.play = False
        self.vol = 1.0

    def previous(self): self.prev = True
    def next(self): self.nxt = True
    def get_volume(self): return self.vol
    def playpause(self):
        states = { True : Gst.State.PLAYING, False : Gst.State.PAUSED }
        self.play = not self.play
        self.emit("state-changed", Gst.State.NULL, states[self.play], Gst.State.NULL)

    @GObject.Signal(arg_types=(Gst.State, Gst.State, Gst.State))
    def state_changed(self, old, new, pending): pass


class TestControlButton(unittest.TestCase):
    def test_control_button(self):
        fake = FakePlayer()
        ctrl = controls.ControlButton(fake, "missing-icon")
        self.assertIsInstance(ctrl, Gtk.Button)
        self.assertTrue(ctrl.has_css_class("large-icons"))
        self.assertEqual(ctrl.get_icon_name(), "missing-icon")
        self.assertEqual(ctrl.player, fake)


class TestPreviousButton(unittest.TestCase):
    def test_previous_button(self):
        fake = FakePlayer()
        prev = controls.PreviousButton(fake)

        self.assertIsInstance(prev, controls.ControlButton)
        self.assertEqual(prev.get_icon_name(), "media-skip-backward")
        prev.emit("clicked")
        self.assertTrue(fake.prev)


class TestNextButton(unittest.TestCase):
    def test_next_button(self):
        fake = FakePlayer()
        next = controls.NextButton(fake)

        self.assertIsInstance(next, controls.ControlButton)
        self.assertEqual(next.get_icon_name(), "media-skip-forward")
        next.emit("clicked")
        self.assertTrue(fake.nxt)


class TestPlayPauseButton(unittest.TestCase):
    def test_play_pause_button(self):
        fake = FakePlayer()
        play = controls.PlayPauseButton(fake)

        self.assertIsInstance(play, controls.ControlButton)
        self.assertEqual(play.get_icon_name(), "media-playback-start")

        play.emit("clicked")
        self.assertTrue(fake.play)
        self.assertEqual(play.get_icon_name(), "media-playback-pause")

        play.emit("clicked")
        self.assertFalse(fake.play)
        self.assertEqual(play.get_icon_name(), "media-playback-start")


class TestControlScaleBox(unittest.TestCase):
    def test_control_scale_box(self):
        splus = scale.ScalePlus(1, 10, 1, 5)
        ctrlbox = controls.ControlScaleBox(splus)
        self.assertIsInstance(ctrlbox, scale.ScaleButtonBox)
        self.assertIsInstance(ctrlbox.get_first_child(), Gtk.Image)
        self.assertTrue(ctrlbox.get_first_child().has_css_class("large-icons"))


class TestVolumeControlbox(unittest.TestCase):
    def test_volume_control_box(self):
        fake = FakePlayer()
        vcb  = controls.VolumeControlBox(fake)
        icon = vcb.get_first_child()
        volume = icon.get_next_sibling().scale

        self.assertIsInstance(vcb, controls.ControlScaleBox)
        self.assertIsInstance(volume, scale.VolumeScale)

        volume.set_value(0)
        self.assertEqual(icon.get_icon_name(), "audio-volume-muted-symbolic")
        volume.set_value(0.3)
        self.assertEqual(icon.get_icon_name(), "audio-volume-low-symbolic")
        volume.set_value(0.6)
        self.assertEqual(icon.get_icon_name(), "audio-volume-medium-symbolic")
        volume.set_value(0.9)
        self.assertEqual(icon.get_icon_name(), "audio-volume-high-symbolic")


class TestControls(unittest.TestCase):
    def test_controls_init(self):
        ctrl = controls.Controls()

        self.assertIsInstance(ctrl, Gtk.Box)
        self.assertIsInstance(ctrl.previous, Gtk.Button)
        self.assertIsInstance(ctrl.play, Gtk.Button)
        self.assertIsInstance(ctrl.pause, Gtk.Button)
        self.assertIsInstance(ctrl.next, Gtk.Button)
        self.assertIsInstance(ctrl.menu, Gtk.MenuButton)
        self.assertIsInstance(ctrl.sizegroup, Gtk.SizeGroup)

        self.assertEqual(ctrl.get_orientation(), Gtk.Orientation.HORIZONTAL)
        self.assertEqual(ctrl.previous.get_icon_name(), "media-skip-backward")
        self.assertEqual(ctrl.play.get_icon_name(), "media-playback-start")
        self.assertEqual(ctrl.pause.get_icon_name(), "media-playback-pause")
        self.assertEqual(ctrl.next.get_icon_name(), "media-skip-forward")

        self.assertTrue(ctrl.has_css_class("linked"))
        self.assertTrue(ctrl.has_css_class("large-icons"))
        self.assertTrue(ctrl.menu.has_css_class("normal-icons"))
        self.assertFalse(ctrl.pause.is_visible())

        self.assertIn(ctrl.previous, ctrl)
        self.assertIn(ctrl.play, ctrl)
        self.assertIn(ctrl.pause, ctrl)
        self.assertIn(ctrl.next, ctrl)
        self.assertIn(ctrl.menu, ctrl)
        self.assertIn(ctrl, ctrl.sizegroup.get_widgets())

    def test_controls_state(self):
        ctrl = controls.Controls()
        self.assertTrue(ctrl.play.is_visible())
        self.assertFalse(ctrl.pause.is_visible())

        ctrl.set_state(Gst.State.PLAYING)
        self.assertFalse(ctrl.play.is_visible())
        self.assertTrue(ctrl.pause.is_visible())

        ctrl.set_state(Gst.State.READY)
        self.assertTrue(ctrl.play.is_visible())
        self.assertFalse(ctrl.pause.is_visible())