from i3pystatus.core import CommandEndpoint
from i3pystatus.network import Network
from i3pystatus.clock import Clock

from gi.repository import Gtk

import subprocess
import sys
import psutil
import os
import traceback


###############################################################################
# Tools
###############################################################################
g_i3bar_size = 18


def exec(s):
    p = subprocess.Popen(s.split(), stdout=sys.stderr.buffer)
    return p.pid


def check_pid(pid):
    if psutil.pid_exists(pid):
        proc = psutil.Process(pid)
        if proc.status() == psutil.STATUS_ZOMBIE:
            os.kill(pid, 2)
            return False
        return True
    return False


def get_current_screen_size(x, y):
    screen = Gtk.Window().get_screen()
    mn_number = screen.get_monitor_at_point(x, y) + 1
    width, height = 0, 0
    for mn_curr in range(mn_number):
        mn = screen.get_monitor_geometry(mn_curr)
        width += mn.width
        height += mn.height
    return width, height


###############################################################################
# Command end point
###############################################################################
def change_command_end_point():
    """ We create a modified version of _command_endpoint that add the support
    of x and y"""
    def _command_endpoint(self):
        for command in self.io_handler_factory().read():
            target_module = self.modules.get(command["instance"])
            if target_module:
                try:
                    target_module._pos_x = int(command["x"])
                    target_module._pos_y = int(command["y"])
                    target_module.on_click(command["button"])
                except Exception:
                    continue
    CommandEndpoint._command_endpoint = _command_endpoint


###############################################################################
# Clock
###############################################################################
def change_clock():
    def display_calendar(quit, s):
        if "_pid" in s.__dict__ and check_pid(s._pid):
            return

        x, y = s._pos_x, s._pos_y
        width_calendar, height_calendar = 300, 210  # fixed values...
        width, height = get_current_screen_size(x, y)

        if (x > width - width_calendar):
            x = width - width_calendar
        if (y < g_i3bar_size):
            y = g_i3bar_size
        if (y > height - height_calendar):
            y = height - height_calendar - g_i3bar_size

        s._pid = exec("calendar-window --size=%d-%d --position=%d-%d "
                "--onLostFocus=%s" % (width_calendar, height_calendar,
                    x, y, "quit" if quit else "ignore"))
        #s._pid = exec("yad --no-buttons --geometry=+%d+%d --class "
        #              "\"i3bar-gui\" --calendar" % (x, y))
    def display_calendar_quit(s):
        display_calendar(True, s)
    def display_calendar_ignore(s):
        display_calendar(False, s)

    Clock.display_calendar = display_calendar_quit
    Clock.on_leftclick = display_calendar_quit
    Clock.on_rightclick = display_calendar_ignore


###############################################################################
# Network
###############################################################################
def change_network():
    # We create the switch function
    def switch_hide(s):
        s.format_up, s.format_up_hide = s.format_up_hide, s.format_up
        s.format_down, s.format_down_hide = s.format_down_hide, s.format_down

    # We add it to the module
    Network.switch_hide = switch_hide

    # We add the correct settings and we init everything properly
    Network.format_up_hide = Network.format_up
    Network.format_down_hide = Network.format_down
    Network.on_leftclick = switch_hide
    Network.settings += (("format_down_hide", ""),)
    Network.settings += (("format_up_hide", ""),)

    # We change the mouse control
    Network.format_up_hide = Network.format_up
    Network.on_rightclick = Network.on_leftclick
    Network.on_upscroll = Network.on_leftclick
    Network.on_downscroll = Network.on_leftclick


###############################################################################
# Change that we apply
###############################################################################
def change_all():
    change_command_end_point()
    change_clock()
    change_network()