Added a simple login function

because of api changes

deemix/__main__.py

@@ -8,6 +8,7 @@ from deemix.app.settings import initSettings
 @click.argument('url')
 def download(bitrate, url):
 	settings = initSettings()
+	app.login()
 	app.downloadLink(url, settings, bitrate)
 	click.echo("All done!")
 

deemix/app/main.py

@@ -1,11 +1,36 @@
 #!/usr/bin/env python3
 from deemix.api.deezer import Deezer
+import deemix.utils.localpaths as localpaths
 from deemix.utils.misc import getIDFromLink, getTypeFromLink, getBitrateInt
 from deemix.app.downloader import download_track, download_album, download_playlist, download_artist, download_spotifytrack, download_spotifyalbum
 from os import system as execute
+import os.path as path
+from os import mkdir, rmdir
 
 dz = Deezer()
 
+def requestValidArl():
+	while True:
+		arl = input("Paste here your arl:")
+		if dz.login_via_arl(arl):
+			break
+	return arl
+
+def login():
+	configFolder = localpaths.getConfigFolder()
+	if not path.isdir(configFolder):
+		mkdir(configFolder)
+	if path.isfile(path.join(configFolder, '.arl')):
+		with open(path.join(configFolder, '.arl'), 'r') as f:
+			arl = f.read()
+		if not dz.login_via_arl(arl):
+			arl = requestValidArl()
+	else:
+		arl = requestValidArl()
+	with open(path.join(configFolder, '.arl'), 'w') as f:
+		f.write(arl)
+
+
 def downloadLink(url, settings, bitrate=None):
 	forcedBitrate = getBitrateInt(bitrate)
 	type = getTypeFromLink(url)