import pygame
import threading
import time
import random
import os
import atexit
import ntpath
import json
import webbrowser
import subprocess

import dearpygui.dearpygui as dpg

from mutagen.mp3 import MP3
from tkinter import Tk,filedialog, simpledialog,  Button, OptionMenu, N, S , E, W, Label, StringVar
import pytube

dpg.create_context()
dpg.create_viewport(title="celaigia, stai senza pensieri",large_icon="logo.ico",small_icon="logo.ico")
pygame.mixer.init()

#https://www.redhat.com/sysadmin/write-GUI-applications-python
global state
state=None

_SONG_FILE = "data/songs.json"
_NUM_YT_SEARCH_RESULTS = 5
_DEFAULT_DOWNLOAD_PATH = 'data/music'
_DEFAULT_MUSIC_VOLUME = 0.5
pygame.mixer.music.set_volume(_DEFAULT_MUSIC_VOLUME)

def bash(cmd):
	subprocess.call(['/bin/bash', '-c', cmd])

def string_sanitizer(s: str)->str:
	s = ''.join(filter(lambda x: x in  '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ ', s))
	return s.replace(' ','_')

def ismusic(filename: str)->bool:
	return filename.split('.')[-1] in ['mp3', 'ogg', 'flac', 'wav']

def update_volume(sender, app_data):
	pygame.mixer.music.set_volume(app_data / 100.0)

def load_database():
	songs = json.load(open(_SONG_FILE, "r+"))["songs"]
	for filename in songs:
		dpg.add_button(
			label=f"{ntpath.basename(filename)}",
			callback=play,
			width=-1,
			height=25,
			user_data=filename.replace("\\", "/"),
			parent="list"
		)
		dpg.add_spacer(height=2, parent="list")


def update_database(filename: str):
	data = json.load(open(_SONG_FILE, "r+"))
	if filename not in data["songs"]:
		data["songs"] += [filename]
		dpg.add_button(
			label=f"{ntpath.basename(filename)}",
			callback=play,
			width=-1,
			height=25,
			user_data=filename.replace("\\", "/"),
			parent="list"
		)
		dpg.add_spacer(height=2, parent="list")
	json.dump(data, open(_SONG_FILE, "r+"), indent=4)

def update_slider():
	global state
	while pygame.mixer.music.get_busy():
		dpg.configure_item(item="pos",default_value=pygame.mixer.music.get_pos()/1000)
		time.sleep(0.7)
	state=None
	dpg.configure_item("cstate",default_value=f"State: None")
	dpg.configure_item("csong",default_value="Now Playing : ")
	dpg.configure_item("play",label="Play")
	dpg.configure_item(item="pos",max_value=100)
	dpg.configure_item(item="pos",default_value=0)

def play(sender, app_data, user_data):
	global state
	if user_data:
		pygame.mixer.music.load(user_data)
		audio = MP3(user_data)
		dpg.configure_item(item="pos",max_value=audio.info.length)
		pygame.mixer.music.play()
		thread=threading.Thread(target=update_slider,daemon=False).start()
		if pygame.mixer.music.get_busy():
			dpg.configure_item("play",label="Pause")
			state="playing"
			dpg.configure_item("cstate",default_value=f"State: Playing")
			dpg.configure_item("csong",default_value=f"Now Playing : {ntpath.basename(user_data)}")

def play_pause():
	global state
	if state=="playing":
		state="paused"
		pygame.mixer.music.pause()
		dpg.configure_item("play",label="Play")
		dpg.configure_item("cstate",default_value=f"State: Paused")
	elif state=="paused":
		state="playing"
		pygame.mixer.music.unpause()
		dpg.configure_item("play",label="Pause")
		dpg.configure_item("cstate",default_value=f"State: Playing")
	else:
		song = json.load(open(_SONG_FILE, "r"))["songs"]
		if song:
			song=random.choice(song)
			pygame.mixer.music.load(song)
			pygame.mixer.music.play()
			thread=threading.Thread(target=update_slider,daemon=False).start()	
			dpg.configure_item("play",label="Pause")
			if pygame.mixer.music.get_busy():
				audio = MP3(song)
				dpg.configure_item(item="pos",max_value=audio.info.length)
				state="playing"
				dpg.configure_item("csong",default_value=f"Now Playing : {ntpath.basename(song)}")
				dpg.configure_item("cstate",default_value=f"State: Playing")

def stop():
	global state
	pygame.mixer.music.stop()
	state=None

def add_files():
	data=json.load(open(_SONG_FILE,"r"))
	root=Tk()
	root.withdraw()
	filename=filedialog.askopenfilename(filetypes=[("Music Files", ("*.mp3","*.wav","*.ogg"))])
	root.quit()
	if filename.endswith(".mp3" or ".wav" or ".ogg"):
		if filename not in data["songs"]:
			update_database(filename)
			#dpg.add_button(label=f"{ntpath.basename(filename)}",callback=play,width=-1,height=25,,parent="list")
			#dpg.add_spacer(height=2,parent="list")

def add_folder():
	data=json.load(open(_SONG_FILE,"r"))
	root=Tk()
	root.withdraw()
	folder=filedialog.askdirectory()
	root.quit()
	for filename in os.listdir(folder):
		if filename.endswith(".mp3" or ".wav" or ".ogg"):
			if filename not in data["songs"]:
				update_database(os.path.join(folder,filename).replace("\\","/"))
				#dpg.add_button(label=f"{ntpath.basename(filename)}",callback=play,width=-1,height=25,user_data=os.path.join(folder,filename).replace("\\","/"),parent="list")
				#dpg.add_spacer(height=2,parent="list")

def search(sender, app_data, user_data):
	songs = json.load(open(_SONG_FILE, "r"))["songs"]
	dpg.delete_item("list", children_only=True)
	for index, song in enumerate(songs):
		if app_data in song.lower():
			dpg.add_button(label=f"{ntpath.basename(song)}", callback=play,width=-1, height=25, user_data=song, parent="list")
			dpg.add_spacer(height=2,parent="list")

def add_download_choices(sender, app_data, user_data)->None:
	yt_urls = {string_sanitizer(r.title): r.watch_url for r in pytube.Search(app_data).results[:_NUM_YT_SEARCH_RESULTS]}

	for url_key in yt_urls:
		dpg.add_button(label=url_key, tag=url_key, callback= download ,width=-1, height=25, user_data = (url_key,yt_urls), parent="sidebar")
		dpg.add_spacer(height=2,parent="sidebar")

def download(sender, app_data, user_data):

	url_key, yt_urls = user_data
	url = yt_urls[url_key]
	for tmp_url_key in yt_urls:
		dpg.delete_item(tmp_url_key)
	video_file = f'{_DEFAULT_DOWNLOAD_PATH}/{url_key}.mp4'
	audio_file = f"{video_file[:-4]}.mp3"
	stream = pytube.YouTube(url).streams.filter(only_audio=True).first()
	stream.download(filename=video_file, skip_existing=True)
	bash(f"ffmpeg -i {video_file} -vn -acodec mp3 -y {audio_file}")
	bash(f"rm {video_file}")
	update_database(audio_file)

def removeall():
	songs = json.load(open(_SONG_FILE, "r"))
	songs["songs"].clear()
	json.dump(songs,open(_SONG_FILE, "w"),indent=4)
	dpg.delete_item("list", children_only=True)
	load_database()

with dpg.theme(tag="base"):
	with dpg.theme_component():
		dpg.add_theme_color(dpg.mvThemeCol_Button, (130, 142, 250))
		dpg.add_theme_color(dpg.mvThemeCol_ButtonActive, (137, 142, 255, 95))
		dpg.add_theme_color(dpg.mvThemeCol_ButtonHovered, (137, 142, 255))
		dpg.add_theme_style(dpg.mvStyleVar_FrameRounding, 3)
		dpg.add_theme_style(dpg.mvStyleVar_ChildRounding, 4)
		dpg.add_theme_style(dpg.mvStyleVar_FramePadding, 4, 4)
		dpg.add_theme_style(dpg.mvStyleVar_WindowRounding, 4, 4)
		dpg.add_theme_style(dpg.mvStyleVar_WindowTitleAlign, 0.50, 0.50)
		dpg.add_theme_style(dpg.mvStyleVar_WindowBorderSize,0)
		dpg.add_theme_style(dpg.mvStyleVar_WindowPadding,10,14)
		dpg.add_theme_color(dpg.mvThemeCol_ChildBg, (25, 25, 25))
		dpg.add_theme_color(dpg.mvThemeCol_Border, (0,0,0,0))
		dpg.add_theme_color(dpg.mvThemeCol_ScrollbarBg, (0,0,0,0))
		dpg.add_theme_color(dpg.mvThemeCol_TitleBgActive, (130, 142, 250))
		dpg.add_theme_color(dpg.mvThemeCol_CheckMark, (221, 166, 185))
		dpg.add_theme_color(dpg.mvThemeCol_FrameBgHovered, (172, 174, 197))

with dpg.theme(tag="slider_thin"):
	with dpg.theme_component():
		dpg.add_theme_color(dpg.mvThemeCol_FrameBgActive, (130, 142, 250,99))
		dpg.add_theme_color(dpg.mvThemeCol_FrameBgHovered, (130, 142, 250,99))
		dpg.add_theme_color(dpg.mvThemeCol_SliderGrabActive, (255, 255, 255))
		dpg.add_theme_color(dpg.mvThemeCol_SliderGrab, (255, 255, 255))
		dpg.add_theme_color(dpg.mvThemeCol_FrameBg, (130, 142, 250,99))
		dpg.add_theme_style(dpg.mvStyleVar_GrabRounding, 3)
		dpg.add_theme_style(dpg.mvStyleVar_GrabMinSize, 30)

with dpg.theme(tag="slider"):
	with dpg.theme_component():
		dpg.add_theme_color(dpg.mvThemeCol_FrameBgActive, (130, 142, 250,99))
		dpg.add_theme_color(dpg.mvThemeCol_FrameBgHovered, (130, 142, 250,99))
		dpg.add_theme_color(dpg.mvThemeCol_SliderGrabActive, (255, 255, 255))
		dpg.add_theme_color(dpg.mvThemeCol_SliderGrab, (255, 255, 255))
		dpg.add_theme_color(dpg.mvThemeCol_FrameBg, (130, 142, 250,99))
		dpg.add_theme_style(dpg.mvStyleVar_GrabRounding, 3)
		dpg.add_theme_style(dpg.mvStyleVar_GrabMinSize, 30)

with dpg.theme(tag="songs"):
	with dpg.theme_component():
		dpg.add_theme_style(dpg.mvStyleVar_FrameRounding, 2)
		dpg.add_theme_color(dpg.mvThemeCol_Button, (89, 89, 144,40))
		dpg.add_theme_color(dpg.mvThemeCol_ButtonHovered, (0,0,0,0))

with dpg.font_registry():
	monobold = dpg.add_font("fonts/MonoLisa-Bold.ttf", 12)
	head = dpg.add_font("fonts/MonoLisa-Bold.ttf", 15)

with dpg.window(tag="main",label="window title"):
	with dpg.child_window(autosize_x=True,height=45,no_scrollbar=True):
		dpg.add_text(f"Now Playing : ",tag="csong")
	dpg.add_spacer(height=2)

	with dpg.group(horizontal=True):
		with dpg.child_window(width=250, tag="sidebar"):
			dpg.add_text("Celaigia",color=(137, 142, 255))
			dpg.add_text("phuturemachine")
			dpg.add_spacer(height=2)
			dpg.add_button(label="Support",width=-1,height=23,callback=lambda:webbrowser.open(url="gitgitigitigiti"))
			dpg.add_spacer(height=5)
			dpg.add_separator()
			dpg.add_spacer(height=5)
			dpg.add_button(label="Add File",width=-1,height=28,callback=add_files)
			dpg.add_button(label="Add Folder",width=-1,height=28,callback=add_folder)
			dpg.add_button(label="Remove All Songs",width=-1,height=28,callback=removeall)
			dpg.add_spacer(height=5)
			dpg.add_separator()
			dpg.add_spacer(height=5)
			dpg.add_text(f"State: {state}",tag="cstate")
			dpg.add_spacer(height=5)
			dpg.add_separator()
			dpg.add_input_text(hint="search youtube",width=-1,callback=add_download_choices, on_enter=True)
			dpg.add_spacer(height=5)

		with dpg.child_window(autosize_x=True,border=False):
			with dpg.child_window(autosize_x=True,height=50,no_scrollbar=True):
				with dpg.group(horizontal=True):
					dpg.add_button(label="Play",width=65,height=30,tag="play",callback=play_pause)
					dpg.add_button(label="Stop",callback=stop,width=65,height=30)
					dpg.add_slider_float(tag="volume", width=120,height=15,pos=(160,19),format="%.0f%.0%",default_value=_DEFAULT_MUSIC_VOLUME * 100,callback=update_volume)
					dpg.add_slider_float(tag="pos",width=-1,pos=(295,19),format="")

			with dpg.child_window(autosize_x=True,delay_search=True):
				with dpg.group(horizontal=True,tag="query"):
					dpg.add_input_text(hint="search for a song locally",width=-1,callback=search)
				dpg.add_spacer(height=5)
				with dpg.child_window(autosize_x=True,delay_search=True,tag="list"):
					load_database()

	dpg.bind_item_theme("volume","slider_thin")
	dpg.bind_item_theme("pos","slider")
	dpg.bind_item_theme("list","songs")

dpg.bind_theme("base")
dpg.bind_font(monobold)

def safe_exit():
	pygame.mixer.music.stop()
	pygame.quit()

atexit.register(safe_exit)

dpg.setup_dearpygui()
dpg.show_viewport()
dpg.set_primary_window("main",True)
dpg.maximize_viewport()
dpg.start_dearpygui()
dpg.destroy_context()