Files
v1.xevion.dev/app/sound.py
2019-12-25 02:59:19 -06:00

93 lines
3.6 KiB
Python

from app import app, db, limiter
from app.sound_models import YouTubeAudio, SoundcloudAudio
from flask import Response, send_file, redirect, url_for, render_template, request
from multiprocessing import Value
from mutagen.mp3 import MP3
import os
import re
import json
import subprocess
# Selection of Lambdas for creating new responses
# Not sure if Responses change based on Request Context, but it doesn't hurt.
getBadRequest = lambda : Response('Bad request', status=400, mimetype='text/plain')
getNotImplemented = lambda : Response('Not implemented', status=501, mimetype='text/plain')
getInvalidID = lambda : Response('Invalid ID', status=400, mimetype='text/plain')
getNotDownloaded = lambda : Response('Media not yet downloaded', status=400, mimetype='text/plain')
# Retrieves the YouTubeAudio object relevant to the mediaid if available. If not, it facilitates the creation and writing of one.
# Also helps with access times.
def get_youtube(mediaid):
audio = YouTubeAudio.query.get(mediaid)
if audio is not None:
audio.access()
return audio # sets the access time to now
else:
audio = YouTubeAudio(id=mediaid)
audio.fill_metadata()
audio.download()
# Commit and save new audio object into the database
db.session.add(audio)
db.session.commit()
return audio
# Under the request context, it grabs the same args needed to decide whether the stream has been downloaded previously
# It applies rate limiting differently based on service, and whether the stream has been accessed previously
def downloadLimiter():
if request.view_args['service'] == 'youtube':
if YouTubeAudio.query.get(request.view_args['mediaid']) is not None:
return '5/minute'
else:
return '1/30seconds'
else:
return '10/minute'
# Streams back the specified media back to the client
@app.route('/stream/<service>/<mediaid>')
@limiter.limit(downloadLimiter, lambda : 'global', error_message='429 Too Many Requests')
def stream(service, mediaid):
if service == 'youtube':
if YouTubeAudio.isValid(mediaid):
audio = get_youtube(mediaid)
return send_file(audio.getPath(alt=True), attachment_filename=audio.filename)
else:
return getInvalidID()
elif service == 'soundcloud':
return getNotImplemented()
elif service == 'spotify':
return getNotImplemented()
else:
return getBadRequest()
# Returns the duration of a specific media
@app.route('/duration/<service>/<mediaid>')
def duration(service, mediaid):
if service == 'youtube':
duration = get_youtube(mediaid).duration
return Response(str(duration), status=200, mimetype='text/plain')
elif service == 'soundcloud':
return getNotImplemented()
elif service == 'spotify':
return getNotImplemented()
else:
return getBadRequest()
# Returns a detailed JSON export of a specific database entry.
# Will not create a new database entry where one didn't exist before.
@app.route('/status/<service>/<mediaid>')
def status(service, mediaid):
if service == 'youtube':
audio = YouTubeAudio.query.get(mediaid)
if audio is None:
if YouTubeAudio.isValid(mediaid):
return getNotDownloaded()
else:
return getInvalidID()
else:
return Response(audio.toJSON(), status=200, mimetype='application/json')
elif service == 'soundcloud':
return getNotImplemented()
elif service == 'spotify':
return getNotImplemented()
else:
return getBadRequest()