Added Spotify credentials to settings tab

Reworked how spotify features work so now it doesn't require restart on 
config change

app.py

@@ -1,16 +1,20 @@
 import deemix.utils.localpaths as localpaths
 from deemix.app.queuemanager import addToQueue, removeFromQueue, getQueue, cancelAllDownloads, removeFinishedDownloads
 from deemix.app.settings import initSettings, getSettings, saveSettings
+from deemix.app.spotify import SpotifyHelper
 from os import system as execute
 
 settings = {}
+spotifyHelper = None
 
 def getUser(dz):
 	return dz.user
 
 def initialize():
 	global settings
+	global spotifyHelper
 	settings = initSettings()
+	spotifyHelper = SpotifyHelper()
 
 def shutdown(interface=None):
 	getQueue()
@@ -18,14 +22,16 @@ def shutdown(interface=None):
 	if interface:
 		interface.send("toast", {'msg': "Server is closed."})
 
+# Search functions
 def mainSearch(dz, term):
 	return dz.search_main_gw(term)
 
 def search(dz, term, type, start, nb):
 	return dz.search_gw(term, type, start, nb)
 
+# Queue functions
 def addToQueue_link(dz, url, bitrate=None, interface=None):
-	return addToQueue(dz, url, settings, bitrate, interface)
+	return addToQueue(dz, spotifyHelper, url, settings, bitrate, interface)
 
 def removeFromQueue_link(uuid, interface=None):
 	removeFromQueue(uuid, interface)
@@ -36,16 +42,20 @@ def cancelAllDownloads_link(interface=None):
 def removeFinishedDownloads_link(interface=None):
 	removeFinishedDownloads(interface)
 
-def getSettings_link():
-	return getSettings()
-
-def getSettings_link():
-	return getSettings()
-
 def getQueue_link():
 	return getQueue()
 
+# Settings functions
+def getSettings_link():
+	return getSettings()
+
 def saveSettings_link(newSettings):
 	global settings
 	settings = newSettings
 	return saveSettings(newSettings)
+
+def getSpotifyCredentials():
+	return spotifyHelper.getCredentials()
+
+def setSpotifyCredentials(newCredentials):
+	return spotifyHelper.setCredentials(newCredentials)

server.py

@@ -55,7 +55,9 @@ def closing():
 @socketio.on('connect')
 def on_connect():
 	session['dz'] = Deezer()
-	emit('init_settings', app.getSettings_link())
+	settings = app.getSettings_link()
+	spotifyCredentials = app.getSpotifyCredentials()
+	emit('init_settings', (settings, spotifyCredentials))
 	queue, queueComplete, queueList, currentItem = app.getQueue_link()
 	emit('init_downloadQueue', {'queue': queue, 'queueComplete': queueComplete, 'queueList': queueList, 'currentItem': currentItem})
 
@@ -113,9 +115,10 @@ def cancelAllDownloads():
 	app.cancelAllDownloads_link(interface=socket_interface)
 
 @socketio.on('saveSettings')
-def saveSettings(settings):
+def saveSettings(settings, spotifyCredentials):
 	app.saveSettings_link(settings)
-	socket_interface.send('updateSettings', settings)
+	app.setSpotifyCredentials(spotifyCredentials)
+	socketio.emit('updateSettings', (settings, spotifyCredentials))
 
 def run_server(port):
 	print("Starting server at http://127.0.0.1:"+str(port))