#!/usr/bin/env python
# -*- mode: python; coding: utf-8; -*-
# ---------------------------------------------------------------------------##
#
# Copyright (C) 1998-2003 Markus Franz Xaver Johannes Oberhumer
# Copyright (C) 2003 Mt. Hood Playing Card Co.
# Copyright (C) 2005-2009 Skomoroh
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# ---------------------------------------------------------------------------##

import os
import tkinter
import tkinter.ttk as ttk

from pysollib.mfxutil import Image, ImageOps, ImageTk
from pysollib.mygettext import _, n_
from pysollib.settings import TITLE
from pysollib.ui.tktile.menubar import MfxMenu, createToolbarMenu
from pysollib.ui.tktile.tkconst import EVENT_HANDLED
from pysollib.ui.tktile.tkutil import loadImage
from pysollib.util import IMAGE_EXTENSIONS
from pysollib.winsystems import TkSettings

from .tkwidget import MfxTooltip


class AbstractToolbarButton:
    def __init__(self, parent, toolbar, toolbar_name, position):
        self.toolbar = toolbar
        self.toolbar_name = toolbar_name
        self.position = position
        self.visible = False

    def show(self, orient, force=False):
        if self.visible and not force:
            return
        self.visible = True
        if orient == 'horizontal':
            padx, pady = TkSettings.toolbar_button_padding
            self.grid(row=0,
                      column=self.position,
                      padx=padx, pady=pady,
                      sticky='nsew')
        else:
            pady, padx = TkSettings.toolbar_button_padding
            self.grid(row=self.position,
                      column=0,
                      padx=padx, pady=pady,
                      sticky='nsew')

    def hide(self):
        if not self.visible:
            return
        self.visible = False
        self.grid_forget()


class ToolbarCheckbutton(AbstractToolbarButton, ttk.Checkbutton):
    def __init__(self, parent, toolbar, toolbar_name, position, **kwargs):
        kwargs['style'] = 'Toolbutton'
        ttk.Checkbutton.__init__(self, parent, **kwargs)
        AbstractToolbarButton.__init__(
            self, parent, toolbar, toolbar_name, position)


class ToolbarButton(AbstractToolbarButton, ttk.Button):
    def __init__(self, parent, toolbar, toolbar_name, position, **kwargs):
        kwargs['style'] = 'Toolbutton'
        ttk.Button.__init__(self, parent, **kwargs)
        AbstractToolbarButton.__init__(
            self, parent, toolbar, toolbar_name, position)


class ToolbarSeparator(ttk.Separator):
    def __init__(self, parent, toolbar, position, **kwargs):
        kwargs['orient'] = 'vertical'
        ttk.Separator.__init__(self, parent, **kwargs)
        self.toolbar = toolbar
        self.position = position
        self.visible = False

    def show(self, orient, force=False):
        if self.visible and not force:
            return
        self.visible = True
        if orient == 'horizontal':
            padx, pady = 4, 6
            self.config(orient='vertical')
            self.grid(row=0,
                      column=self.position,
                      padx=padx, pady=pady,
                      sticky='nsew')
        else:
            padx, pady = 4, 6
            self.config(orient='horizontal')
            self.grid(row=self.position,
                      column=0,
                      padx=pady, pady=padx,
                      sticky='nsew')

    def hide(self):
        if not self.visible:
            return
        self.visible = False
        self.grid_forget()


class ToolbarLabel(tkinter.Message):
    def __init__(self, parent, toolbar, toolbar_name, position, **kwargs):
        tkinter.Message.__init__(self, parent, **kwargs)
        self.toolbar = toolbar
        self.toolbar_name = toolbar_name
        self.position = position
        self.visible = False

    def show(self, orient, force=False):
        if self.visible and not force:
            return
        self.visible = True
        padx, pady = TkSettings.toolbar_label_padding
        if orient == 'horizontal':
            self.grid(row=0,
                      column=self.position,
                      padx=padx, pady=pady,
                      sticky='nsew')
        else:
            self.grid(row=self.position,
                      column=0,
                      padx=padx, pady=pady,
                      sticky='nsew')

    def hide(self):
        if not self.visible:
            return
        self.visible = False
        self.grid_forget()


# ************************************************************************
# * Note: Applications should call show/hide after constructor.
# ************************************************************************

class PysolToolbarTk:

    def __init__(self, top, menubar, dir,
                 size=0, relief='flat', compound='none'):
        from pysollib.options import calcCustomMouseButtonsBinding
        self.top = top
        self.menubar = menubar
        self.side = -1
        self._tooltips = []
        self._widgets = []
        self.dir = dir
        self.size = size
        self.compound = compound
        self.orient = 'horizontal'
        #
        self.frame = ttk.Frame(top, class_='Toolbar',
                               relief=TkSettings.toolbar_relief,
                               borderwidth=TkSettings.toolbar_borderwidth)
        #
        for label, f, t in (
            (n_("New"),      self.mNewGame,   _("New game")),
            (n_("Restart"),  self.mRestart,   _("Restart the\ncurrent game")),
            (None,           None,            None),
            (n_("Open"),     self.mOpen,      _("Open a\nsaved game")),
            (n_("Save"),     self.mSave,      _("Save game")),
            (None,           None,            None),
            (n_("Undo"),     self.mUndo,      _("Undo last move")),
            (n_("Redo"),     self.mRedo,      _("Redo last move")),
            (n_("Autodrop"), self.mDrop,      _("Auto drop cards")),
            (n_("Shuffle"),  self.mShuffle,   _("Shuffle tiles")),
            (n_("Hint"),     self.mHint,      _("Hint")),
            (n_("Pause"),    self.mPause,     _("Pause game")),
            (None,           None,            None),
            (n_("Statistics"), self.mPlayerStats, _("View statistics")),
            (n_("Rules"),    self.mHelpRules, _("Rules for this game")),
            (None,           None,            None),
            (n_("Quit"),     self.mQuit,      _("Quit %s") % TITLE),
                ):
            if label is None:
                sep = self._createSeparator()
                sep.bind(
                    calcCustomMouseButtonsBinding("<{mouse_button3}>"),
                    self.rightclickHandler
                )
            elif label == 'Pause':
                self._createButton(label, f, check=True, tooltip=t)
            else:
                self._createButton(label, f, tooltip=t)
        self.pause_button.config(variable=menubar.tkopt.pause)

        self.popup = MfxMenu(master=None, label=n_('Toolbar'), tearoff=0)
        createToolbarMenu(menubar, self.popup)

        position = len(self._widgets)
        self.frame.rowconfigure(position, weight=1)
        self.frame.columnconfigure(position, weight=1)
        #
        self._createLabel("player", label=n_('Player'),
                          tooltip=_("Player options"))
        #
        self.player_label.bind(
            calcCustomMouseButtonsBinding("<{mouse_button1}>"),
            self.mOptPlayerOptions
        )
        self.frame.bind(
            calcCustomMouseButtonsBinding("<{mouse_button3}>"),
            self.rightclickHandler
        )
        #
        self.setCompound(compound, force=True)

    def config(self, w, v):
        if w == 'player':
            # label
            if v:
                self.player_label.show(orient=self.orient)
            else:
                self.player_label.hide()
        else:
            # button
            widget = getattr(self, w+'_button')
            if v:
                widget.show(orient=self.orient)
            else:
                widget.hide()
        #
        prev_visible = None
        last_visible = None
        for w in self._widgets:
            if isinstance(w, ToolbarSeparator):
                if prev_visible is None or isinstance(prev_visible,
                                                      ToolbarSeparator):
                    w.hide()
                else:
                    w.show(orient=self.orient)
            if w.visible:
                prev_visible = w
                if not isinstance(w, ToolbarLabel):
                    last_visible = w
        if isinstance(last_visible, ToolbarSeparator):
            last_visible.hide()

    # util
    def _loadImage(self, name):
        file = os.path.join(self.dir, name)
        image = None
        for ext in IMAGE_EXTENSIONS:
            file = os.path.join(self.dir, name+ext)
            if os.path.isfile(file):
                image = loadImage(file=file)
                break
        return image

    def _createSeparator(self):
        position = len(self._widgets)
        sep = ToolbarSeparator(self.frame,
                               position=position,
                               toolbar=self,
                               takefocus=0)
        sep.show(orient=self.orient)
        self._widgets.append(sep)
        return sep

    def _createDisabledButtonImage(self, tkim):
        # grayscale and light-up image
        if not tkim:
            return None
        im = tkim._pil_image
        dis_im = ImageOps.grayscale(im)
        # color = '#ffffff'
        # factor = 0.6
        color = '#dedede'
        factor = 0.7
        sh = Image.new(dis_im.mode, dis_im.size, color)
        tmp = Image.blend(dis_im, sh, factor)
        dis_im = Image.composite(tmp, im, im)
        dis_tkim = ImageTk.PhotoImage(image=dis_im)
        return dis_tkim

    def _setButtonImage(self, button, name):
        image = self._loadImage(name)
        setattr(self, name + "_image", image)
        if Image:
            dis_image = self._createDisabledButtonImage(image)
            if dis_image:
                setattr(self, name + "_disabled_image", dis_image)
                button.config(image=(image, 'disabled', dis_image))
        else:
            button.config(image=image)

    def _createButton(self, label, command, check=False, tooltip=None):
        name = label.lower()
        position = len(self._widgets)
        kw = {
            'position': position,
            'toolbar': self,
            'toolbar_name': name,
            'command': command,
            'takefocus': 0,
            'text': _(label),
            }

        if check:
            button = ToolbarCheckbutton(self.frame, **kw)
        else:
            button = ToolbarButton(self.frame, **kw)
        self._setButtonImage(button, name)
        button.show(orient=self.orient)
        setattr(self, name + "_button", button)
        self._widgets.append(button)
        if tooltip:
            b = MfxTooltip(button)
            self._tooltips.append(b)
            b.setText(tooltip)
        return button

    def _createLabel(self, name, label=None, tooltip=None):
        aspect = (400, 300)[self.getSize() != 0]
        position = len(self._widgets)+1
        label = ToolbarLabel(self.frame,
                             position=position,
                             toolbar=self,
                             toolbar_name=name,
                             relief="ridge",
                             justify="center",
                             aspect=aspect)
        label.show(orient=self.orient)
        setattr(self, name + "_label", label)
        self._widgets.append(label)
        if tooltip:
            b = MfxTooltip(label)
            self._tooltips.append(b)
            b.setText(tooltip)
        return label

    def _busy(self):
        if not self.side or not self.game or not self.menubar:
            return 1
        self.game.stopDemo()
        self.game.interruptSleep()
        return self.game.busy

    #
    # public methods
    #

    def show(self, side=1, resize=1):
        if self.side == side:
            return 0
        if resize:
            self.top.wm_geometry("")    # cancel user-specified geometry
        if not side:
            # hide
            self.frame.grid_forget()
        else:
            # show
            pack_func = self.frame.grid_configure

            if side == 1:
                # top
                padx, pady = TkSettings.horizontal_toolbar_padding
                pack_func(row=0, column=1, sticky='ew', padx=padx, pady=pady)
            elif side == 2:
                # bottom
                padx, pady = TkSettings.horizontal_toolbar_padding
                pack_func(row=2, column=1, sticky='ew', padx=padx, pady=pady)
            elif side == 3:
                # left
                padx, pady = TkSettings.vertical_toolbar_padding
                pack_func(row=1, column=0, sticky='ns', padx=padx, pady=pady)
            else:
                # right
                padx, pady = TkSettings.vertical_toolbar_padding
                pack_func(row=1, column=2, sticky='ns', padx=padx, pady=pady)
            # set orient
            orient = 'horizontal' if side in (1, 2) else 'vertical'
            self._setOrient(orient)
        self.side = side
        return 1

    def hide(self, resize=1):
        self.show(0, resize)

    def destroy(self):
        for w in self._tooltips:
            if w:
                w.destroy()
        self._tooltips = []
        for w in self._widgets:
            if w:
                w.destroy()
        self._widgets = []

    def setCursor(self, cursor):
        if self.side:
            self.frame.config(cursor=cursor)
            self.frame.update_idletasks()

    def updateText(self, **kw):
        for name, value in kw.items():
            label = getattr(self, name + "_label")
            label["text"] = value

    def updateImages(self, dir, size):
        if dir == self.dir and size == self.size:
            return 0
        if not os.path.isdir(dir):
            return 0
        self.dir, self.size = dir, size
        data = []
        for w in self._widgets:
            if not isinstance(w, (ToolbarButton, ToolbarCheckbutton)):
                continue
            name = w.toolbar_name
            data.append((name, w))
        label = self.player_label
        aspect = (400, 300)[size != 0]
        label.config(aspect=aspect)
        for name, w in data:
            self._setButtonImage(w, name)
        self.setCompound(self.compound, force=True)
        return 1

    def setCompound(self, compound, force=False):
        if not force and self.compound == compound:
            return False
        for w in self._widgets:
            if not isinstance(w, (ToolbarButton, ToolbarCheckbutton)):
                continue
            w.config(compound=compound)
        self.compound = compound
        return True

    def _setOrient(self, orient='horizontal', force=False):
        if not force and self.orient == orient:
            return False
        for w in self._widgets:
            if w.visible:
                w.show(orient=orient, force=True)
        self.orient = orient
        return True

    #
    # Mouse event handlers
    #

    def rightclickHandler(self, event):
        if self._busy():
            return EVENT_HANDLED
        if self.popup:
            self.popup.tk_popup(event.x_root, event.y_root)
        return EVENT_HANDLED

    def getSize(self):
        if self.compound == 'text':
            return 0
        size = self.size
        comp = int(self.compound in ('top', 'bottom'))
        return int((size+comp) != 0)
