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app.py
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app.py
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from flask import Flask
from flask import render_template
from flask import request
from flask import redirect
from flask import url_for
from flask import send_from_directory
from flask import send_file
from flask import flash
from urllib import quote
from urllib import unquote
import karaoke
import threading
import sys
import logging
import os
import json
import cherrypy
import argparse
import psutil
import signal
import time
app = Flask(__name__)
app.secret_key = 'HjI981293u99as811lll'
site_name = "PiKaraoke"
def filename_from_path(file_path,remove_youtube_id=True):
rc = os.path.basename(file_path)
rc = os.path.splitext(rc)[0]
if (remove_youtube_id):
rc = rc.split("---")[0] #removes youtube id if present
return rc
def url_escape(filename):
return quote(filename.encode('utf8'))
@app.route("/")
def home():
return render_template('home.html', site_title = site_name, title='Home')
@app.route("/nowplaying")
def nowplaying():
if (len(k.queue) >=2 ):
next_song = filename_from_path(k.queue[1])
else:
next_song = None
rc = {'now_playing' : k.now_playing, 'up_next' : next_song}
return json.dumps(rc)
@app.route("/queue")
def queue():
return render_template('queue.html', queue = k.queue, site_title = site_name,
title='Queue')
@app.route("/queue/addrandom", methods=['GET'])
def add_random():
amount = int(request.args['amount'])
rc = k.queue_add_random(amount)
if (rc):
flash("Added %s random tracks" % amount, "is-success")
else:
flash("Ran out of songs!", "is-warning")
return redirect(url_for('queue'))
@app.route("/queue/edit", methods=['GET'])
def queue_edit():
action = request.args['action']
if (action == "clear"):
k.queue_clear()
flash("Cleared the queue!", "is-warning")
return redirect(url_for('queue'))
else:
song = request.args['song']
song = unquote(song)
if (action == "down"):
result = k.queue_edit(song, "down")
if (result):
flash("Moved down in queue: " + song, "is-success")
else:
flash("Error moving down in queue: " + song, "is-danger")
elif (action == "up"):
result = k.queue_edit(song, "up")
if (result):
flash("Moved up in queue: " + song, "is-success")
else:
flash("Error moving up in queue: " + song, "is-danger")
elif (action == "delete"):
result = k.queue_edit(song, "delete")
if (result):
flash("Deleted from queue: " + song, "is-success")
else:
flash("Error deleting from queue: " + song, "is-danger")
return redirect(url_for('queue'))
@app.route("/enqueue", methods=['POST','GET'])
def enqueue():
if (request.args.has_key('song')):
song = request.args['song']
else:
d = request.form.to_dict()
song = d['song_to_add']
rc = k.enqueue(song)
if (rc):
flash('Song added to queue: ' + filename_from_path(song), "is-success")
else:
flash('Song is already in queue: ' + filename_from_path(song), "is-danger")
return redirect(url_for('home'))
@app.route("/skip")
def skip():
k.skip()
return redirect(url_for('home'))
@app.route("/pause")
def pause():
k.pause()
return redirect(url_for('home'))
@app.route("/restart")
def restart():
rc = k.restart()
return redirect(url_for('home'))
@app.route("/vol_up")
def vol_up():
rc = k.vol_up()
return redirect(url_for('home'))
@app.route("/vol_down")
def vol_down():
k.vol_down()
return redirect(url_for('home'))
@app.route("/search", methods=['GET'])
def search():
if (request.args.has_key('search_string')):
search_string = request.args['search_string']
search_results = k.get_karaoke_search_results(search_string)
else:
search_results = None
return render_template('search.html', site_title = site_name, title='Search',
songs=k.available_songs, search_results = search_results)
@app.route("/browse", methods=['GET'])
def browse():
if (request.args.has_key('sort') and request.args['sort'] == "date"):
songs = sorted(k.available_songs, key = lambda x: os.path.getctime(x))
songs.reverse()
sort_order = "Date"
else:
songs = k.available_songs
sort_order = "Alphabetical"
return render_template('files.html', sort_order=sort_order, site_title = site_name,
title='Browse', songs=songs)
@app.route("/download", methods=['POST'])
def download():
d = request.form.to_dict()
song = d['song-url']
if (d.has_key('queue') and d['queue'] == "on"):
queue = True
else:
queue = False
#download in the background since this can take a few minutes
t = threading.Thread(target= k.download_video,args=[song,queue])
t.daemon = True
t.start()
flash_message = "Download started: '" + song + "'. This may take a couple of minutes to complete. "
if (queue):
flash_message += 'Song will be added to queue.'
else:
flash_message += 'Song will appear in the "available songs" list.'
flash(flash_message, "is-info")
return redirect(url_for('search'))
@app.route('/qrcode')
def qrcode():
return send_file(k.generate_qr_code(), mimetype='image/png')
@app.route('/files/delete', methods=['GET'])
def delete_file():
if (request.args.has_key('song')):
song_path = request.args['song']
if song_path in k.queue:
flash("Error: Can't delete this song because it is in the current queue: " + song_path, "is-danger")
else:
k.delete(song_path)
flash("Song deleted: " + song_path, "is-warning")
else:
flash("Error: No song parameter specified!", "is-danger")
return redirect(url_for('browse'))
@app.route('/files/edit', methods=['GET', 'POST'])
def edit_file():
queue_error_msg = "Error: Can't edit this song because it is in the current queue: "
if (request.args.has_key('song')):
song_path = request.args['song']
#print "SONG_PATH" + song_path
if song_path in k.queue:
flash(queue_error_msg + song_path, "is-danger")
return redirect(url_for('browse'))
else:
return render_template('edit.html', site_title = site_name,
title='Song File Edit', song=song_path.encode('utf-8'))
else:
d = request.form.to_dict()
if (d.has_key('new_file_name') and d.has_key('old_file_name')):
new_name = d['new_file_name']
old_name = d['old_file_name']
if old_name in k.queue:
# check one more time just in case someone added it during editing
flash(queue_error_msg + song_path, "is-danger")
else:
k.rename(old_name, new_name)
flash("Renamed file: '%s' to '%s'." % (old_name, new_name), "is-warning")
else:
flash("Error: No filename parameters were specified!", "is-danger")
return redirect(url_for('browse'))
@app.route("/info")
def info():
url = "http://" + request.host
#cpu
cpu = str(psutil.cpu_percent()) + '%'
# mem
memory = psutil.virtual_memory()
available = round(memory.available/1024.0/1024.0,1)
total = round(memory.total/1024.0/1024.0,1)
memory = str(available) + 'MB free / ' + str(total) + 'MB total ( ' + str(memory.percent) + '% )'
#disk
disk = psutil.disk_usage('/')
# Divide from Bytes -> KB -> MB -> GB
free = round(disk.free/1024.0/1024.0/1024.0,1)
total = round(disk.total/1024.0/1024.0/1024.0,1)
disk = str(free) + 'GB free / ' + str(total) + 'GB total ( ' + str(disk.percent) + '% )'
#youtube-dl
youtubedl_version = k.youtubedl_version
return render_template('info.html', site_title = site_name, title='Info',
url=url, memory=memory, cpu=cpu, disk=disk, youtubedl_version = youtubedl_version )
# Delay system commands to allow redirect to render first
def delayed_halt(cmd):
time.sleep(3)
k.queue_clear() # stop all pending omxplayer processes
if (cmd == 0):
cherrypy.engine.exit()
sys.exit()
if (cmd == 1):
os.system('shutdown now')
if (cmd == 2):
os.system('reboot')
update_log_path = '/tmp/youtube-dl-update.log'
def update_youtube_dl():
time.sleep(3)
log_path = '/tmp/youtube-dl-update.log'
os.system('echo "Current youtube-dl version: " > %s' % update_log_path)
os.system('youtube-dl --version >> %s' % update_log_path)
os.system('pip install --upgrade youtube_dl >> %s' % update_log_path)
os.system('echo "New youtube-dl version: " >> %s' % update_log_path)
os.system('youtube-dl --version >> %s' % update_log_path)
k.get_youtubedl_version()
@app.route("/update_ytdl")
def update_ytdl():
flash("Updating youtube-dl! Should take a minute or two... (log output at: %s)" % update_log_path, "is-warning")
th = threading.Thread(target=update_youtube_dl)
th.start()
return redirect(url_for('home'))
@app.route("/quit")
def quit():
flash("Quitting to console now!", "is-warning")
th = threading.Thread(target=delayed_halt,args=[0])
th.start()
return redirect(url_for('home'))
@app.route("/shutdown")
def shutdown():
flash("Shutting down system now!", "is-danger")
th = threading.Thread(target=delayed_halt,args=[1])
th.start()
return redirect(url_for('home'))
@app.route("/reboot")
def reboot():
flash("Rebooting system now!", "is-danger")
th = threading.Thread(target=delayed_halt,args=[2])
th.start()
return redirect(url_for('home'))
# Handle sigterm, apparently cherrypy won't shut down without explicit handling
signal.signal(signal.SIGTERM, lambda signum, stack_frame: sys.exit(1))
if __name__ == '__main__':
default_port = 5000
default_volume = 0
default_splash_delay = 4
default_log_level = logging.INFO
default_dl_dir = '/usr/lib/pikaraoke/songs'
default_omxplayer_path = '/usr/bin/omxplayer'
default_youtubedl_path = '/usr/local/bin/youtube-dl'
# parse CLI args
parser = argparse.ArgumentParser()
parser.add_argument('-p','--port', help='Desired http port (default: %d)' % default_port, default=default_port, required=False)
parser.add_argument('-d','--download-path', help='Desired path for downloaded songs. (default: %s)' % default_dl_dir, default=default_dl_dir, required=False)
parser.add_argument('-o','--omxplayer-path', help='Path of omxplayer. (default: %s)' % default_omxplayer_path, default=default_omxplayer_path, required=False)
parser.add_argument('-y','--youtubedl-path', help='Path of youtube-dl. (default: %s)' % default_youtubedl_path, default=default_youtubedl_path, required=False)
parser.add_argument('-v','--volume', help='Initial player volume in millibels. Negative values ok. (default: %s , Note: 100 millibels = 1 decibel)' % default_volume, default=default_volume, required=False)
parser.add_argument('-s','--splash-delay', help='Delay during splash screen between songs (in secs). (default: %s )' % default_splash_delay, default=default_splash_delay, required=False)
parser.add_argument('-l','--log-level', help='Logging level int value (DEBUG: 10, INFO: 20, WARNING: 30, ERROR: 40, CRITICAL: 50). (default: %s )' % default_log_level, default=default_log_level, required=False)
parser.add_argument('--show-overlay', action='store_true', help='Show overlay in omxplayer with song title and IP. (feature is broken on Pi 4 omxplayer 12/24/2019)', required=False)
parser.add_argument('--hide-ip', action='store_true', help='Hide IP address from the screen.', required=False)
parser.add_argument('--hide-splash-screen', action='store_true', help='Hide splash screen before/between songs.', required=False)
args = parser.parse_args()
app.jinja_env.globals.update(filename_from_path=filename_from_path)
app.jinja_env.globals.update(url_escape=quote)
# Start karaoke process
global k
k = karaoke.Karaoke(port = args.port,
download_path = args.download_path,
omxplayer_path = args.omxplayer_path,
youtubedl_path = args.youtubedl_path,
splash_delay = args.splash_delay,
log_level = args.log_level,
volume = args.volume,
hide_overlay = not args.show_overlay,
hide_ip = args.hide_ip,
hide_splash_screen = args.hide_splash_screen)
t = threading.Thread(target=k.run)
t.daemon = True
t.start()
cherrypy.tree.graft(app, '/')
# Set the configuration of the web server
cherrypy.config.update({
'engine.autoreload.on': False,
'log.screen': True,
'server.socket_port': int(args.port),
'server.socket_host': '0.0.0.0'
})
# Start the CherryPy WSGI web server
cherrypy.engine.start()
cherrypy.engine.block()