import multiprocessing
import os
import signal
os.environ["KIVY_NO_CONSOLELOG"] = "1"
from kivy.core.window import Window, Config
from kivy.uix.screenmanager import ScreenManager
from kivymd.uix.screen import MDScreen
from kivymd.app import MDApp
from kivy.base import Builder
from kivy.uix.popup import Popup
from kivy.clock import Clock
import bin.csv_parsers
import bin.filepathanalysis
import bin.player
import math


pl = bin.player.Player()
pa = bin.filepathanalysis.PathAnalysis()
cvr = bin.csv_parsers.CsvRead()
cvw = bin.csv_parsers.CsvWrite()


###########
# Popups
###########


class PathMissingPU(Popup):
    pass


class PathWrongPU(Popup):
    pass


class invalidpathPU(Popup):
    pass


###########
# SCREENS
###########


class Home(MDScreen):
    def change_screen(self):
        if self.ids.filepath.text != "":
            self.analyse_dir()
        else:
            self.openpathmpu()

    def analyse_dir(self):
        try:
            self.__fcontent = os.listdir(self.ids.filepath.text)
            self.__good_files = 0
            for self.item in self.__fcontent:
                self.__filextension = self.item[(len(self.item) - 4):]
                if self.__filextension == ".mp3" or self.__filextension == ".wav":
                    self.__good_files += 1
                else:
                    pass
            # self.__good_files = 1
            if self.__good_files > 0:
                cvw.write_str("./data/temp.csv", [self.ids.filepath.text])
                self.manager.current = "Main"
                self.manager.transition.direction = "left"
            else:
                self.openpathfpu()
        except:
            self.ivpathpu()

    def openpathmpu(self):
        self.pmpu = PathMissingPU()
        self.pmpu.open()

    def openpathfpu(self):
        self.wppu = PathWrongPU()
        self.wppu.open()

    def ivpathpu(self):
        self.ivppu = invalidpathPU()
        self.ivppu.open()


class Main(MDScreen):
    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        self.instructions = multiprocessing.Value('i', 0)
        self.others = multiprocessing.Value('i', 0)
        self.backfeed = multiprocessing.Value('f', 0)
        self.keyboard = Window.request_keyboard(None, self)
        self.keyboard.bind(on_key_down=self.key_pressed)
        self.quit_requests = 0

    def key_pressed(self, keyboard, keycode, text, modifiers):
        # print(keycode[1])
        self.key = keycode[1]
        if self.key == "spacebar":
            self.playmusic()
        elif self.key == "right":
            self.nextsong()
        elif self.key == "up":
            self.rewindsong()
        elif self.key == "left":
            self.previoussong()
        elif self.key == "escape":
            self.back_here()
        elif self.key == "s":
            if self.manager.current == "Main":
                self.manager.current = "Showcase"
                self.manager.transition.direction = "left"
            else:
                pass
        else:
            pass

    def initialize(self):
        try:
            Clock.schedule_interval(self.screen_updating, 2)
        except:
            pass

        try:
            if self.mplayer.is_alive() is True:
                pass
            else:
                cvw.chg_str("./data/config.csv", 0, 0, "0")
                self.instructions = multiprocessing.Value('i', 0)
                self.others = multiprocessing.Value('i', 0)
                self.backfeed = multiprocessing.Value('f', 0)
                self.mplayer = multiprocessing.Process(name="player", target=pl.musicmanager, args=(self.instructions, self.others, self.backfeed,))
                self.mplayer.start()
        except AttributeError:
            cvw.chg_str("./data/config.csv", 0, 0, "0")
            self.instructions = multiprocessing.Value('i', 0)
            self.others = multiprocessing.Value('i', 0)
            self.backfeed = multiprocessing.Value('f', 0)
            self.mplayer = multiprocessing.Process(name="player", target=pl.musicmanager, args=(self.instructions, self.others, self.backfeed,))
            self.mplayer.start()

    def playmusic(self):
        self.others.value = 3
        if self.instructions.value == 0:
            self.instructions.value = 1
            self.ids.pp_button.text = "Pause"
        else:
            self.instructions.value = 0
            self.ids.pp_button.text = "Play"

    def nextsong(self):
        self.others.value = 1

    def rewindsong(self):
        self.others.value = 2

    def previoussong(self):
        self.others.value = 4

    def go_back(self):
        try:
            self.mplayer.kill()
        except:
            pass
        self.ids.pp_button.text = "Play"
        self.manager.current = "Home"
        self.manager.transition.direction = "right"

    def screen_updating(self, waste):
        self.__windowsize = Window._get_size()
        self.__windowsize_x = self.__windowsize[0]
        self.__windowsize_y = self.__windowsize[1]
        self.__text_size = round(math.sqrt(((self.__windowsize_x + self.__windowsize_y) / 2)), 0)
        self.manager.get_screen("Showcase").ids.current_song.font_size = self.__text_size + 5
        self.manager.get_screen("Showcase").ids.upcoming_songs.font_size = self.__text_size - 5
        self.__config = cvr.importing("./data/config.csv").pop(0)
        self.__config.pop(1)
        self.__info = cvr.importing("./data/songtemp.csv")
        self.__currents_imp = self.__info.pop(0)
        self.__currents = int(self.__currents_imp.pop(0))
        self.__upcoming = self.__info.pop(0)
        self.__songlinfo = self.__info.pop(0)
        self.__songpos = self.backfeed.value
        self.__songdisplay = int(self.__songpos / float(self.__songlinfo.pop(0)) * 100)
        self.manager.get_screen("Showcase").ids.progressbars.value = self.__songdisplay
        self.__current = self.__upcoming.pop(self.__currents)
        if self.__config == ["1"]:
            self.ids.current_song.text = self.__current[:(len(self.__current) - 4)]
            self.manager.get_screen("Showcase").ids.current_song.text = self.__current[:(len(self.__current) - 4)]
        else:
            self.ids.current_song.text = self.__current
            self.manager.get_screen("Showcase").ids.current_song.text = self.__current
        if len(self.__upcoming) <= self.__currents:
            self.manager.get_screen("Showcase").ids.upcoming_songs.text = "No more songs in Queue"
        else:
            self.__upcoming2 = str(self.__upcoming.pop(self.__currents))
            if self.__config == ["1"]:
                self.__upcoming_output = self.__upcoming2[:(len(self.__upcoming2) - 4)]
            else:
                self.__upcoming_output = self.__upcoming2

            self.__length_output = 0
            for i in range(len(self.__upcoming) - self.__currents):
                if self.__length_output > 5:
                    pass
                else:
                    self.__upcoming2 = str(self.__upcoming.pop(self.__currents))
                    if self.__config == ["1"]:
                        self.__upcoming_output += f"\n{self.__upcoming2[:(len(self.__upcoming2) - 4)]}"
                    else:
                        self.__upcoming_output += f"\n{self.__upcoming2}"
                    self.__length_output += 1
            self.manager.get_screen("Showcase").ids.upcoming_songs.text = self.__upcoming_output

    def back_here(self):
        if self.manager.current == "Showcase":
            self.manager.current = "Main"
            self.manager.transition.direction = "right"
        elif self.manager.current == "Main":
            self.go_back()
        else:
            pass


class ShowcaseS(MDScreen):
    pass


class RootScreen(ScreenManager):
    pass


class MusicPlayer(MDApp):
    def build(self):
        Window.bind(on_request_close=self.on_request_close)
        self.title = "MusicPlayer"
        self.theme_cls.primary_palette = "Blue"
        self.theme_cls.accent_palette = "Gray"
        # self.icon = "./BiogasControllerAppLogo.png"
        return Builder.load_file("./bin/gui/gui.kv")

    def on_request_close(self, *args):
        print("leaving...")
        os.killpg(os.getpgid(0), signal.SIGKILL)


if __name__ == "__main__":
    Config.set('graphics', 'width', '800')
    Config.set('graphics', 'height', '600')
    Config.set('graphics', 'resizable', True)
    Config.set('kivy', 'exit_on_escape', '0')
    Config.set('input', 'mouse', 'mouse,multitouch_on_demand')
    Config.set('graphics', 'window_state', 'normal')
    Config.set('graphics', 'fullscreen', False)
    Config.write()
    MusicPlayer().run()