_.mixin({
	lastfm : function () {
		this.notify_data = function (name, data) {
			if (name == "2K3.NOTIFY.LASTFM") {
				this.username = this.read_ini("username");
				this.sk = this.read_ini("sk");
				this.scrobbler && this.scrobbler.update_button();
				_.forEach(panel.list_objects, function (item) {
					if (item.mode == "lastfm_info" && item.lastfm_mode == 1)
						item.update();
				});
			}
		}
		
		this.auth = function () {
			var api_sig = md5("api_key" + this.api_key + "methodauth.getMobileSessionpassword" + this.password + "username" + this.username + this.secret);
			var data = "format=json&password=" + this.password + "&username=" + this.username + "&method=auth.getMobileSession&api_key=" + this.api_key + "&api_sig=" + api_sig;
			this.xmlhttp.open("POST", "https://ws.audioscrobbler.com/2.0/", true);
			this.xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
			this.xmlhttp.setRequestHeader("User-Agent", this.ua);
			this.xmlhttp.send(data);
			this.xmlhttp.onreadystatechange = _.bind(function () {
				if (this.xmlhttp.readyState == 4) {
					// don't check for http status 200 since new last.fm site went live
					var data = _.jsonParse(this.xmlhttp.responsetext);
					if (data.error) {
						WshShell.popup(data.message, 0, panel.name, popup.stop);
					} else if (data.session && data.session.key.length == 32) {
						this.write_ini("sk", data.session.key);
						window.NotifyOthers("2K3.NOTIFY.LASTFM", "update");
						this.notify_data("2K3.NOTIFY.LASTFM", "update");
						WshShell.popup("Your password was verified successfully. It will not be saved anywhere.", 0, panel.name, popup.info);
					}
				}
			}, this);
		}
		
		this.update_username = function () {
			var username = _.input("Enter your Last.fm username", panel.name, this.username);
			if (username != this.username) {
				this.write_ini("username", username);
				this.write_ini("sk", "");
				window.NotifyOthers("2K3.NOTIFY.LASTFM", "update");
				this.notify_data("2K3.NOTIFY.LASTFM", "update");
			}
		}
		
		this.update_password = function () {
			this.password = _.input("Enter your Last.fm password", panel.name, "");
			if (this.password.length) {
				this.write_ini("sk", "");
				window.NotifyOthers("2K3.NOTIFY.LASTFM", "update");
				this.notify_data("2K3.NOTIFY.LASTFM", "update");
				this.auth();
			}
		}
		
		this.get_base_url = function () {
			return "http://ws.audioscrobbler.com/2.0/?format=json&api_key=" + this.api_key;
		}
		
		this.read_ini = function (k) {
			return utils.ReadINI(this.ini_file, "Last.fm", k);
		}
		
		this.write_ini = function (k, v) {
			utils.WriteINI(this.ini_file, "Last.fm", k, v);
		}
		
		this.scrobbler = null;
		this.ini_file = folders.settings + "lastfm.ini";
		this.api_key = "1f078d9e59cb34909f7ed56d7fc64aba";
		this.secret = "a8b4adc5de20242f585b12ef08a464a9";
		this.username = this.read_ini("username");
		this.sk = this.read_ini("sk");
		this.ua = "foo_jscript_panel_lastfm2";
		this.xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
	}
});

/*
 * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
 * Digest Algorithm, as defined in RFC 1321.
 * Version 2.2 Copyright (C) Paul Johnston 1999 - 2009
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 * Distributed under the BSD License
 * See http://pajhome.org.uk/crypt/md5 for more info.
 */
var hexcase=0;function md5(a){return rstr2hex(rstr_md5(str2rstr_utf8(a)))}
function hex_hmac_md5(a,b){return rstr2hex(rstr_hmac_md5(str2rstr_utf8(a),str2rstr_utf8(b)))}
function md5_vm_test(){return md5("abc").toLowerCase()=="900150983cd24fb0d6963f7d28e17f72"}
function rstr_md5(a){return binl2rstr(binl_md5(rstr2binl(a),a.length*8))}
function rstr_hmac_md5(c,f){var e=rstr2binl(c);if(e.length>16){e=binl_md5(e,c.length*8)}
var a=Array(16),d=Array(16);for(var b=0;b<16;b++){a[b]=e[b]^909522486;d[b]=e[b]^1549556828}
var g=binl_md5(a.concat(rstr2binl(f)),512+f.length*8);return binl2rstr(binl_md5(d.concat(g),512+128))}
function rstr2hex(c){try{hexcase}catch(g){hexcase=0}
var f=hexcase?"0123456789ABCDEF":"0123456789abcdef";var b="";var a;for(var d=0;d<c.length;d++){a=c.charCodeAt(d);b+=f.charAt((a>>>4)&15)+f.charAt(a&15)}
return b}
function str2rstr_utf8(c){var b="";var d=-1;var a,e;while(++d<c.length){a=c.charCodeAt(d);e=d+1<c.length?c.charCodeAt(d+1):0;if(55296<=a&&a<=56319&&56320<=e&&e<=57343){a=65536+((a&1023)<<10)+(e&1023);d++}
if(a<=127){b+=String.fromCharCode(a)}else{if(a<=2047){b+=String.fromCharCode(192|((a>>>6)&31),128|(a&63))}else{if(a<=65535){b+=String.fromCharCode(224|((a>>>12)&15),128|((a>>>6)&63),128|(a&63))}else{if(a<=2097151){b+=String.fromCharCode(240|((a>>>18)&7),128|((a>>>12)&63),128|((a>>>6)&63),128|(a&63))}}}}}
return b}
function rstr2binl(b){var a=Array(b.length>>2);for(var c=0;c<a.length;c++){a[c]=0}
for(var c=0;c<b.length*8;c+=8){a[c>>5]|=(b.charCodeAt(c/8)&255)<<(c%32)}
return a}
function binl2rstr(b){var a="";for(var c=0;c<b.length*32;c+=8){a+=String.fromCharCode((b[c>>5]>>>(c%32))&255)}
return a}
function binl_md5(p,k){p[k>>5]|=128<<((k)%32);p[(((k+64)>>>9)<<4)+14]=k;var o=1732584193;var n=-271733879;var m=-1732584194;var l=271733878;for(var g=0;g<p.length;g+=16){var j=o;var h=n;var f=m;var e=l;o=md5_ff(o,n,m,l,p[g+0],7,-680876936);l=md5_ff(l,o,n,m,p[g+1],12,-389564586);m=md5_ff(m,l,o,n,p[g+2],17,606105819);n=md5_ff(n,m,l,o,p[g+3],22,-1044525330);o=md5_ff(o,n,m,l,p[g+4],7,-176418897);l=md5_ff(l,o,n,m,p[g+5],12,1200080426);m=md5_ff(m,l,o,n,p[g+6],17,-1473231341);n=md5_ff(n,m,l,o,p[g+7],22,-45705983);o=md5_ff(o,n,m,l,p[g+8],7,1770035416);l=md5_ff(l,o,n,m,p[g+9],12,-1958414417);m=md5_ff(m,l,o,n,p[g+10],17,-42063);n=md5_ff(n,m,l,o,p[g+11],22,-1990404162);o=md5_ff(o,n,m,l,p[g+12],7,1804603682);l=md5_ff(l,o,n,m,p[g+13],12,-40341101);m=md5_ff(m,l,o,n,p[g+14],17,-1502002290);n=md5_ff(n,m,l,o,p[g+15],22,1236535329);o=md5_gg(o,n,m,l,p[g+1],5,-165796510);l=md5_gg(l,o,n,m,p[g+6],9,-1069501632);m=md5_gg(m,l,o,n,p[g+11],14,643717713);n=md5_gg(n,m,l,o,p[g+0],20,-373897302);o=md5_gg(o,n,m,l,p[g+5],5,-701558691);l=md5_gg(l,o,n,m,p[g+10],9,38016083);m=md5_gg(m,l,o,n,p[g+15],14,-660478335);n=md5_gg(n,m,l,o,p[g+4],20,-405537848);o=md5_gg(o,n,m,l,p[g+9],5,568446438);l=md5_gg(l,o,n,m,p[g+14],9,-1019803690);m=md5_gg(m,l,o,n,p[g+3],14,-187363961);n=md5_gg(n,m,l,o,p[g+8],20,1163531501);o=md5_gg(o,n,m,l,p[g+13],5,-1444681467);l=md5_gg(l,o,n,m,p[g+2],9,-51403784);m=md5_gg(m,l,o,n,p[g+7],14,1735328473);n=md5_gg(n,m,l,o,p[g+12],20,-1926607734);o=md5_hh(o,n,m,l,p[g+5],4,-378558);l=md5_hh(l,o,n,m,p[g+8],11,-2022574463);m=md5_hh(m,l,o,n,p[g+11],16,1839030562);n=md5_hh(n,m,l,o,p[g+14],23,-35309556);o=md5_hh(o,n,m,l,p[g+1],4,-1530992060);l=md5_hh(l,o,n,m,p[g+4],11,1272893353);m=md5_hh(m,l,o,n,p[g+7],16,-155497632);n=md5_hh(n,m,l,o,p[g+10],23,-1094730640);o=md5_hh(o,n,m,l,p[g+13],4,681279174);l=md5_hh(l,o,n,m,p[g+0],11,-358537222);m=md5_hh(m,l,o,n,p[g+3],16,-722521979);n=md5_hh(n,m,l,o,p[g+6],23,76029189);o=md5_hh(o,n,m,l,p[g+9],4,-640364487);l=md5_hh(l,o,n,m,p[g+12],11,-421815835);m=md5_hh(m,l,o,n,p[g+15],16,530742520);n=md5_hh(n,m,l,o,p[g+2],23,-995338651);o=md5_ii(o,n,m,l,p[g+0],6,-198630844);l=md5_ii(l,o,n,m,p[g+7],10,1126891415);m=md5_ii(m,l,o,n,p[g+14],15,-1416354905);n=md5_ii(n,m,l,o,p[g+5],21,-57434055);o=md5_ii(o,n,m,l,p[g+12],6,1700485571);l=md5_ii(l,o,n,m,p[g+3],10,-1894986606);m=md5_ii(m,l,o,n,p[g+10],15,-1051523);n=md5_ii(n,m,l,o,p[g+1],21,-2054922799);o=md5_ii(o,n,m,l,p[g+8],6,1873313359);l=md5_ii(l,o,n,m,p[g+15],10,-30611744);m=md5_ii(m,l,o,n,p[g+6],15,-1560198380);n=md5_ii(n,m,l,o,p[g+13],21,1309151649);o=md5_ii(o,n,m,l,p[g+4],6,-145523070);l=md5_ii(l,o,n,m,p[g+11],10,-1120210379);m=md5_ii(m,l,o,n,p[g+2],15,718787259);n=md5_ii(n,m,l,o,p[g+9],21,-343485551);o=safe_add(o,j);n=safe_add(n,h);m=safe_add(m,f);l=safe_add(l,e)}
return Array(o,n,m,l)}
function md5_cmn(h,e,d,c,g,f){return safe_add(bit_rol(safe_add(safe_add(e,h),safe_add(c,f)),g),d)}
function md5_ff(g,f,k,j,e,i,h){return md5_cmn((f&k)|((~f)&j),g,f,e,i,h)}
function md5_gg(g,f,k,j,e,i,h){return md5_cmn((f&j)|(k&(~j)),g,f,e,i,h)}
function md5_hh(g,f,k,j,e,i,h){return md5_cmn(f^k^j,g,f,e,i,h)}
function md5_ii(g,f,k,j,e,i,h){return md5_cmn(k^(f|(~j)),g,f,e,i,h)}
function safe_add(a,d){var c=(a&65535)+(d&65535);var b=(a>>16)+(d>>16)+(c>>16);return(b<<16)|(c&65535)}
function bit_rol(a,b){return(a<<b)|(a>>>(32-b))}
