ocarina/trunk/src/GuiObjects/scrobbler.py

import urllib2
import pygtk
pygtk.require('2.0')
import gtk
import webbrowser
import thread
import hashlib

from button import Button

import xml.dom
from xml.dom import minidom


class Scrobbler(gtk.VBox):
	def __init__(self,data):
		gtk.VBox.__init__(self,False,0)
		self.data = data
		self.url = "http://ws.audioscrobbler.com/2.0/"
		self.key = "2c76f85a6704efd74b5a358821284ef9"
		self.secret = "3a6012bfb627b60a884cf33fc044885c"
		self.token = ""
		
		# Run these in new thread so we can keep loading other things while waiting
		self.makegui()
		#thread.start_new_thread(self.setup,("setup",None))

		self.show()


	def makegui(self):
		if self.data.lfm == "":
			self.nosession = Button("lfm",None,"Click here to configure Ocarina for submitting songs to last.fm",self.setup)
			self.nosession.set_size_request(100,100)
			self.pack_start(self.nosession,False,False,0)


	# One time setup (in theory)
	def setup(self,widgit,data):
		self.nosession.hide()
		self.remove(self.nosession)
		self.contBtn = Button("lfm",None,"Click to continue",self.fetchSession)
		self.pack_start(self.contBtn,False,False,0)
		self.fetchToken()
		self.authorize()


	# Fetch the authentication token
	def fetchToken(self):
		(url,list) = self.addMethod("auth.gettoken")
		(url,list) = self.addParam(url,list,"api_key",self.key)
		status = self.placeRequest(url)
		attr = status.getAttributeNode("status")
		if attr.value != "ok":
			return
		self.token += hashlib.md5(status.firstChild.nextSibling.firstChild.data).hexdigest()


# Open to authorization page
	def authorize(self):
		url = "http://www.last.fm/api/auth/?"
		(url,list) = self.addParam(url,[],"api_key",self.key)
		(url,list) = self.addParam(url,[],"token",self.token)
		#url+="&"+self.token
		webbrowser.open(url)


	def fetchSession(self,widgit,data):
		(url,list) = self.addMethod("auth.getSession")
		(url,list) = self.addParam(url,list,"api_key",self.key)
		(url,list) = self.addParam(url,list,"token",self.token)
		sig = self.getSig(list)
		(url,list) = self.addParam(url,None,"api_sig",sig)
		print url
		#status = self.placeRequest(url)
		return
		attr = status.getAttributeNode("status")
		if attr.value != "ok":
			return
		node = status.firstChild.firstChild
		user = node.data
		key = node.nextSibling.data
		subscriber = node.nextSibling.nextSibling.data
		#print user,key,subscriber


	def addMethod(self,method):
		return (self.url+"?method="+method,[("method",method)])


	def addParam(self,url,list,param,val):
		url+="&"+param+"="+val
		if list:
			list += [(param,val)]
		return url,list
		#return (url+"&"+param+"="+val,list+[(param,val)])


	def getSig(self,list):
		list.sort()
		string = ""
		for entry in list:
			string+=entry[0]+entry[1]
		string = string + self.secret
		m = hashlib.md5(string)
		return m.hexdigest()


	def sendReq(self,req):
		req+=self.secret
		#hash = md5.new(req).digest()
		#return self.placeRequest(self.url+"?"+hash)


	def placeRequest(self,url):
		print url
		req = urllib2.Request(url)
		req.add_header('User-Agent','Ocarina')
		return minidom.parse(urllib2.urlopen(req)).documentElement