import asyncio
import shutil
import os
import stat

from gi.repository import Gtk

from pychess.ic import TimeSeal
from pychess.Savers import pgn
from pychess.System import conf
from pychess.System import uistuff
from pychess.System import download_file_async
from pychess.System.prefix import getEngineDataPrefix
from pychess.widgets import mainwindow


class ExternalsDialog():
    def __init__(self):
        self.window = Gtk.Window(Gtk.WindowType.TOPLEVEL, title=_("Ask for permissions"))
        self.window.set_transient_for(mainwindow())
        vbox = Gtk.Box(orientation=Gtk.Orientation.VERTICAL)
        gtk_version = (Gtk.get_major_version(), Gtk.get_minor_version())
        if gtk_version >= (3, 12):
            vbox.props.margin_start = 9
            vbox.props.margin_end = 9
        else:
            vbox.props.margin_left = 9
            vbox.props.margin_right = 9
        vbox.props.margin_bottom = 9
        self.window.add(vbox)
        uistuff.keepWindowSize("externalsdialog", self.window, (320, 240), uistuff.POSITION_CENTER)

        label = Gtk.Label(_("Some of PyChess features needs your permission to download external programs"))
        vbox.pack_start(label, True, True, 0)

        box = Gtk.Box()
        check_button = Gtk.CheckButton(_("database querying needs scoutfish"))
        check_button.set_active(conf.get("download_scoutfish", False))
        check_button.connect("toggled", lambda w: conf.set("download_scoutfish", w.get_active()))
        box.add(check_button)
        link = "https://github.com/gbtami/scoutfish"
        link_button = Gtk.LinkButton(link, link)
        box.add(link_button)
        vbox.pack_start(box, False, False, 0)

        box = Gtk.Box()
        check_button = Gtk.CheckButton(_("database opening tree needs chess_db"))
        check_button.set_active(conf.get("download_chess_db", False))
        check_button.connect("toggled", lambda w: conf.set("download_chess_db", w.get_active()))
        box.add(check_button)
        link = "https://github.com/gbtami/chess_db"
        link_button = Gtk.LinkButton(link, link)
        box.add(link_button)
        vbox.pack_start(box, False, False, 0)

        box = Gtk.Box()
        check_button = Gtk.CheckButton(_("ICC lag compensation needs timestamp"))
        check_button.set_active(conf.get("download_timestamp", False))
        check_button.connect("toggled", lambda w: conf.set("download_timestamp", w.get_active()))
        box.add(check_button)
        link = "https://www.chessclub.com/user/resources/icc/timestamp"
        link_button = Gtk.LinkButton(link, link)
        box.add(link_button)
        vbox.pack_start(box, False, False, 0)

        check_button = Gtk.CheckButton(_("Don't show this dialog on startup."))
        check_button.set_active(conf.get("dont_show_externals_at_startup", False))
        check_button.connect("toggled", lambda w: conf.set("dont_show_externals_at_startup", w.get_active()))
        vbox.pack_start(check_button, True, True, 0)

        buttonbox = Gtk.ButtonBox()
        close_button = Gtk.Button.new_from_stock(Gtk.STOCK_OK)
        close_button.connect("clicked", self.on_close_clicked)
        self.window.connect("delete_event", lambda w, a: self.window.destroy())
        buttonbox.add(close_button)
        vbox.pack_start(buttonbox, False, False, 0)

    def show(self):
        self.window.show_all()
        self.window.present()

    def on_close_clicked(self, button):
        @asyncio.coroutine
        def coro():
            altpath = getEngineDataPrefix()
            if pgn.scoutfish_path is None and conf.get("download_scoutfish", False):
                binary = "https://github.com/gbtami/scoutfish/releases/download/20170627/%s" % pgn.scoutfish
                filename = yield from download_file_async(binary)
                if filename is not None:
                    dest = shutil.move(filename, os.path.join(altpath, pgn.scoutfish))
                    os.chmod(dest, stat.S_IEXEC | stat.S_IREAD | stat.S_IWRITE)
                    pgn.scoutfish_path = dest

            if pgn.chess_db_path is None and conf.get("download_chess_db", False):
                binary = "https://github.com/gbtami/chess_db/releases/download/20170627/%s" % pgn.parser
                filename = yield from download_file_async(binary)
                if filename is not None:
                    dest = shutil.move(filename, os.path.join(altpath, pgn.parser))
                    os.chmod(dest, stat.S_IEXEC | stat.S_IREAD | stat.S_IWRITE)
                    pgn.chess_db_path = dest

            if TimeSeal.timestamp_path is None and conf.get("download_timestamp", False):
                binary = "https://www.chessclub.com/user/resources/icc/timestamp/%s" % TimeSeal.timestamp
                filename = yield from download_file_async(binary)
                if filename is not None:
                    dest = shutil.move(filename, os.path.join(altpath, TimeSeal.timestamp))
                    os.chmod(dest, stat.S_IEXEC | stat.S_IREAD | stat.S_IWRITE)
                    TimeSeal.timestamp_path = dest
        asyncio.async(coro())

        self.window.emit("delete-event", None)
