# Released under the MIT License. See LICENSE for details.
#
"""UI for top level settings categories."""

from __future__ import annotations

from typing import TYPE_CHECKING

import _ba
import ba

if TYPE_CHECKING:
    from typing import Tuple, Optional, Union


class AllSettingsWindow(ba.Window):
    """Window for selecting a settings category."""

    def __init__(self,
                 transition: str = 'in_right',
                 origin_widget: ba.Widget = None):
        # pylint: disable=too-many-statements
        # pylint: disable=too-many-locals
        import threading

        # Preload some modules we use in a background thread so we won't
        # have a visual hitch when the user taps them.
        threading.Thread(target=self._preload_modules).start()

        ba.set_analytics_screen('Settings Window')
        scale_origin: Optional[Tuple[float, float]]
        if origin_widget is not None:
            self._transition_out = 'out_scale'
            scale_origin = origin_widget.get_screen_space_center()
            transition = 'in_scale'
        else:
            self._transition_out = 'out_right'
            scale_origin = None
        uiscale = ba.app.ui.uiscale
        width = 900 if uiscale is ba.UIScale.SMALL else 580
        x_inset = 75 if uiscale is ba.UIScale.SMALL else 0
        height = 435
        self._r = 'settingsWindow'
        top_extra = 20 if uiscale is ba.UIScale.SMALL else 0

        uiscale = ba.app.ui.uiscale
        super().__init__(root_widget=ba.containerwidget(
            size=(width, height + top_extra),
            transition=transition,
            toolbar_visibility='menu_minimal',
            scale_origin_stack_offset=scale_origin,
            scale=(1.75 if uiscale is ba.UIScale.SMALL else
                   1.35 if uiscale is ba.UIScale.MEDIUM else 1.0),
            stack_offset=(0, -8) if uiscale is ba.UIScale.SMALL else (0, 0)))

        if ba.app.ui.use_toolbars and uiscale is ba.UIScale.SMALL:
            self._back_button = None
            ba.containerwidget(edit=self._root_widget,
                               on_cancel_call=self._do_back)
        else:
            self._back_button = btn = ba.buttonwidget(
                parent=self._root_widget,
                autoselect=True,
                position=(40 + x_inset, height - 55),
                size=(130, 60),
                scale=0.8,
                text_scale=1.2,
                label=ba.Lstr(resource='backText'),
                button_type='back',
                on_activate_call=self._do_back)
            ba.containerwidget(edit=self._root_widget, cancel_button=btn)

        ba.textwidget(parent=self._root_widget,
                      position=(0, height - 44),
                      size=(width, 25),
                      text=ba.Lstr(resource=self._r + '.titleText'),
                      color=ba.app.ui.title_color,
                      h_align='center',
                      v_align='center',
                      maxwidth=130)

        if self._back_button is not None:
            ba.buttonwidget(edit=self._back_button,
                            button_type='backSmall',
                            size=(60, 60),
                            label=ba.charstr(ba.SpecialChar.BACK))

        v = height - 80
        v -= 145

        basew = 280 if uiscale is ba.UIScale.SMALL else 230
        baseh = 170
        x_offs = x_inset + (105 if uiscale is ba.UIScale.SMALL else
                            72) - basew  # now unused
        x_offs2 = x_offs + basew - 7
        x_offs3 = x_offs + 2 * (basew - 7)
        x_offs4 = x_offs2
        x_offs5 = x_offs3

        def _b_title(x: float, y: float, button: ba.Widget,
                     text: Union[str, ba.Lstr]) -> None:
            ba.textwidget(parent=self._root_widget,
                          text=text,
                          position=(x + basew * 0.47, y + baseh * 0.22),
                          maxwidth=basew * 0.7,
                          size=(0, 0),
                          h_align='center',
                          v_align='center',
                          draw_controller=button,
                          color=(0.7, 0.9, 0.7, 1.0))

        ctb = self._controllers_button = ba.buttonwidget(
            parent=self._root_widget,
            autoselect=True,
            position=(x_offs2, v),
            size=(basew, baseh),
            button_type='square',
            label='',
            on_activate_call=self._do_controllers)
        if ba.app.ui.use_toolbars and self._back_button is None:
            bbtn = _ba.get_special_widget('back_button')
            ba.widget(edit=ctb, left_widget=bbtn)
        _b_title(x_offs2, v, ctb,
                 ba.Lstr(resource=self._r + '.controllersText'))
        imgw = imgh = 130
        ba.imagewidget(parent=self._root_widget,
                       position=(x_offs2 + basew * 0.49 - imgw * 0.5, v + 35),
                       size=(imgw, imgh),
                       texture=ba.gettexture('controllerIcon'),
                       draw_controller=ctb)

        gfxb = self._graphics_button = ba.buttonwidget(
            parent=self._root_widget,
            autoselect=True,
            position=(x_offs3, v),
            size=(basew, baseh),
            button_type='square',
            label='',
            on_activate_call=self._do_graphics)
        if ba.app.ui.use_toolbars:
            pbtn = _ba.get_special_widget('party_button')
            ba.widget(edit=gfxb, up_widget=pbtn, right_widget=pbtn)
        _b_title(x_offs3, v, gfxb, ba.Lstr(resource=self._r + '.graphicsText'))
        imgw = imgh = 110
        ba.imagewidget(parent=self._root_widget,
                       position=(x_offs3 + basew * 0.49 - imgw * 0.5, v + 42),
                       size=(imgw, imgh),
                       texture=ba.gettexture('graphicsIcon'),
                       draw_controller=gfxb)

        v -= (baseh - 5)

        abtn = self._audio_button = ba.buttonwidget(
            parent=self._root_widget,
            autoselect=True,
            position=(x_offs4, v),
            size=(basew, baseh),
            button_type='square',
            label='',
            on_activate_call=self._do_audio)
        _b_title(x_offs4, v, abtn, ba.Lstr(resource=self._r + '.audioText'))
        imgw = imgh = 120
        ba.imagewidget(parent=self._root_widget,
                       position=(x_offs4 + basew * 0.49 - imgw * 0.5 + 5,
                                 v + 35),
                       size=(imgw, imgh),
                       color=(1, 1, 0),
                       texture=ba.gettexture('audioIcon'),
                       draw_controller=abtn)

        avb = self._advanced_button = ba.buttonwidget(
            parent=self._root_widget,
            autoselect=True,
            position=(x_offs5, v),
            size=(basew, baseh),
            button_type='square',
            label='',
            on_activate_call=self._do_advanced)
        _b_title(x_offs5, v, avb, ba.Lstr(resource=self._r + '.advancedText'))
        imgw = imgh = 120
        ba.imagewidget(parent=self._root_widget,
                       position=(x_offs5 + basew * 0.49 - imgw * 0.5 + 5,
                                 v + 35),
                       size=(imgw, imgh),
                       color=(0.8, 0.95, 1),
                       texture=ba.gettexture('advancedIcon'),
                       draw_controller=avb)
        self._restore_state()

    @staticmethod
    def _preload_modules() -> None:
        """Preload modules we use (called in bg thread)."""
        import bastd.ui.mainmenu as _unused1
        import bastd.ui.settings.controls as _unused2
        import bastd.ui.settings.graphics as _unused3
        import bastd.ui.settings.audio as _unused4
        import bastd.ui.settings.advanced as _unused5

    def _do_back(self) -> None:
        # pylint: disable=cyclic-import
        from bastd.ui.mainmenu import MainMenuWindow
        self._save_state()
        ba.containerwidget(edit=self._root_widget,
                           transition=self._transition_out)
        ba.app.ui.set_main_menu_window(
            MainMenuWindow(transition='in_left').get_root_widget())

    def _do_controllers(self) -> None:
        # pylint: disable=cyclic-import
        from bastd.ui.settings.controls import ControlsSettingsWindow
        self._save_state()
        ba.containerwidget(edit=self._root_widget, transition='out_left')
        ba.app.ui.set_main_menu_window(
            ControlsSettingsWindow(
                origin_widget=self._controllers_button).get_root_widget())

    def _do_graphics(self) -> None:
        # pylint: disable=cyclic-import
        from bastd.ui.settings.graphics import GraphicsSettingsWindow
        self._save_state()
        ba.containerwidget(edit=self._root_widget, transition='out_left')
        ba.app.ui.set_main_menu_window(
            GraphicsSettingsWindow(
                origin_widget=self._graphics_button).get_root_widget())

    def _do_audio(self) -> None:
        # pylint: disable=cyclic-import
        from bastd.ui.settings.audio import AudioSettingsWindow
        self._save_state()
        ba.containerwidget(edit=self._root_widget, transition='out_left')
        ba.app.ui.set_main_menu_window(
            AudioSettingsWindow(
                origin_widget=self._audio_button).get_root_widget())

    def _do_advanced(self) -> None:
        # pylint: disable=cyclic-import
        from bastd.ui.settings.advanced import AdvancedSettingsWindow
        self._save_state()
        ba.containerwidget(edit=self._root_widget, transition='out_left')
        ba.app.ui.set_main_menu_window(
            AdvancedSettingsWindow(
                origin_widget=self._advanced_button).get_root_widget())

    def _save_state(self) -> None:
        try:
            sel = self._root_widget.get_selected_child()
            if sel == self._controllers_button:
                sel_name = 'Controllers'
            elif sel == self._graphics_button:
                sel_name = 'Graphics'
            elif sel == self._audio_button:
                sel_name = 'Audio'
            elif sel == self._advanced_button:
                sel_name = 'Advanced'
            elif sel == self._back_button:
                sel_name = 'Back'
            else:
                raise ValueError(f'unrecognized selection \'{sel}\'')
            ba.app.ui.window_states[self.__class__.__name__] = {
                'sel_name': sel_name
            }
        except Exception:
            ba.print_exception(f'Error saving state for {self}.')

    def _restore_state(self) -> None:
        try:
            sel_name = ba.app.ui.window_states.get(self.__class__.__name__,
                                                   {}).get('sel_name')
            sel: Optional[ba.Widget]
            if sel_name == 'Controllers':
                sel = self._controllers_button
            elif sel_name == 'Graphics':
                sel = self._graphics_button
            elif sel_name == 'Audio':
                sel = self._audio_button
            elif sel_name == 'Advanced':
                sel = self._advanced_button
            elif sel_name == 'Back':
                sel = self._back_button
            else:
                sel = self._controllers_button
            if sel is not None:
                ba.containerwidget(edit=self._root_widget, selected_child=sel)
        except Exception:
            ba.print_exception(f'Error restoring state for {self}.')
