var Auth = {
	invokeUrl: function(url, self, onSuccess, onFailure, timeout) {
		timeout = timeout ? timeout : 30 * 1000;

		var id = new Date().getTime();

		Auth.invocations[id] = function() {
			if(!Auth.invocations[id].cancelled) {
				onSuccess.apply(self, arguments);
			}

			delete Auth.invocations[id];
		};

		window.setTimeout(function() {
			if(Auth.invocations[id]) {
				Auth.invocations[id].cancelled = true;
				onFailure.apply(self);
			}
		}, timeout);

		if(-1 == url.indexOf('?')) {
			url += '?';
		} else {
			url += '&';
		}

		url += "invocation=" + id;

		var script = document.createElement('script');

		script.type = 'text/javascript';
		script.src = url;

		document.getElementsByTagName("head")[0].appendChild(script);
	},

	invocations: {},

	readCookie: function(name) {
		var nameEQ = name + '=';

		var cookies = document.cookie.split(';')

		for(var i=0; i < cookies.length; i++) {
			var cookie = cookies[i];

			while (cookie.charAt(0)==' ') cookie = cookie.substring(1, cookie.length);

			if(cookie.indexOf(nameEQ) == 0) {
				return cookie.substring(nameEQ.length, cookie.length);
			}
		}
	        
	        return null;
	},

 	retrievePassword: function(username, callback) {
		Auth.invokeUrl('http://auth.telogis.com/applications2/passwords/' + username, Auth, function(result) {
			try {
				result = eval(result);
			} catch(e) {
				result = { 'succeeded': false, 'result-code': -1, 'reason': 'Unknown' };
			}

			if(result.succeeded) {
				if(callback && callback.onsuccess) {
					callback.onsuccess(result);
				}
			} else {
				if(callback && callback.onerror) {
					callback.onerror(result);
				}
			}
		}, function() {
			var result = { 'succeeded': false, 'result-code': -1, 'reason': 'Unknown' };

			if(callback && callback.onerror) {
				callback.onerror(result);
			}
		});
	},

 	retrieveUsername: function(callback) {
		Auth.invokeUrl('http://auth.telogis.com/applications2/username', Auth, function(result) {
			try {
				result = eval(result);
			} catch(e) {
				result = { 'succeeded': false, 'result-code': -1, 'reason': 'Unknown' };
			}

			if(result.succeeded) {
				if(callback && callback.onsuccess) {
					callback.onsuccess(result);
				}
			} else {
				if(callback && callback.onerror) {
					callback.onerror(result);
				}
			}
		}, function() {
			var result = { 'succeeded': false, 'result-code': -1, 'reason': 'Unknown' };

			if(callback && callback.onerror) {
				callback.onerror(result);
			}
		});
	},

	signin: function(username, password, autologin, application, callback) {
		var parts = username.replace(/;/, ':').split(':');
        
		var customerName = parts[0];
		var userName = parts[1];

		if (username != "" && password != "") {
			return this.signin_(Base64.encode(userName + '@' + customerName + ':' + password), autologin, application, callback);
		} else {
			var result = { 'succeeded': false, 'result-code': -1, 'reason': 'Missing username or password' };
			if (callback && callback.onerror) {
				callback.onerror(result);
			}
		}
	},

	signin_: function(auth, autologin, application, callback) {
		Auth.invokeUrl('http://auth.telogis.com/applications2/' + application + '?authorization=' + auth + '&autologin=' + autologin, Auth, function(result) {
			try {
				result = eval(result);
			} catch(e) {
				result = { 'succeeded': false, 'result-code': -1, 'reason': 'Unknown' };
			}
		
			if(result.succeeded) {
				if(callback && callback.onsuccess) {
					callback.onsuccess(result);
				}

				document.location = result.url;
			} else {				
				if(callback && callback.onerror) {
					callback.onerror(result);
				}
			}
		}, function() {
			var result = { 'succeeded': false, 'result-code': -1, 'reason': 'Unknown' };

			if(callback && callback.onerror) {
				callback.onerror(result);
			}
		});
	},

	signinWithCookie: function(callback) {
		var cookie = Auth.readCookie('OnTrackSession');

		if(cookie != null) {
			var parts = cookie.split('|');

			if(parts.length >= 5 && parts[4] == 'true') {
				Auth.invokeUrl('http://' + document.location.host + '/applications2/returning-url', Auth, function(result) {
					try {
						result = eval(result);
					} catch(e) {
						result = { 'succeeded': false, 'result-code': -1, 'reason': 'Unknown' };
					}
		
					if(result.succeeded) {
						if(callback && callback.onsuccess) {
							callback.onsuccess(result);
						}

						document.location = result.url;
					} else {				
						if(callback && callback.onerror) {
							callback.onerror(result);
						}
					}
				}, function() {
					var result = { 'succeeded': false, 'result-code': -1, 'reason': 'Unknown' };

					if(callback && callback.onerror) {
						callback.onerror(result);
					}
				});

				return true;
			}
		}

		return false;
	}
};

    /**
    *
    *  Base64 encode / decode
    *  http://www.webtoolkit.info/
    *
    **/

    var Base64 = {

	    // private property
	    _keyStr : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",

	    // public method for encoding
	    encode : function (input) {
		    var output = "";
		    var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
		    var i = 0;

		    input = Base64._utf8_encode(input);

		    while (i < input.length) {

			    chr1 = input.charCodeAt(i++);
			    chr2 = input.charCodeAt(i++);
			    chr3 = input.charCodeAt(i++);

			    enc1 = chr1 >> 2;
			    enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
			    enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
			    enc4 = chr3 & 63;

			    if (isNaN(chr2)) {
				    enc3 = enc4 = 64;
			    } else if (isNaN(chr3)) {
				    enc4 = 64;
			    }

			    output = output +
			    this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) +
			    this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4);

		    }

		    return output;
	    },

	    // public method for decoding
	    decode : function (input) {
		    var output = "";
		    var chr1, chr2, chr3;
		    var enc1, enc2, enc3, enc4;
		    var i = 0;

		    input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");

		    while (i < input.length) {

			    enc1 = this._keyStr.indexOf(input.charAt(i++));
			    enc2 = this._keyStr.indexOf(input.charAt(i++));
			    enc3 = this._keyStr.indexOf(input.charAt(i++));
			    enc4 = this._keyStr.indexOf(input.charAt(i++));

			    chr1 = (enc1 << 2) | (enc2 >> 4);
			    chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
			    chr3 = ((enc3 & 3) << 6) | enc4;

			    output = output + String.fromCharCode(chr1);

			    if (enc3 != 64) {
				    output = output + String.fromCharCode(chr2);
			    }
			    if (enc4 != 64) {
				    output = output + String.fromCharCode(chr3);
			    }

		    }

		    output = Base64._utf8_decode(output);

		    return output;

	    },

	    // private method for UTF-8 encoding
	    _utf8_encode : function (string) {
		    string = string.replace(/\r\n/g,"\n");
		    var utftext = "";

		    for (var n = 0; n < string.length; n++) {

			    var c = string.charCodeAt(n);

			    if (c < 128) {
				    utftext += String.fromCharCode(c);
			    }
			    else if((c > 127) && (c < 2048)) {
				    utftext += String.fromCharCode((c >> 6) | 192);
				    utftext += String.fromCharCode((c & 63) | 128);
			    }
			    else {
				    utftext += String.fromCharCode((c >> 12) | 224);
				    utftext += String.fromCharCode(((c >> 6) & 63) | 128);
				    utftext += String.fromCharCode((c & 63) | 128);
			    }

		    }

		    return utftext;
	    },

	    // private method for UTF-8 decoding
	    _utf8_decode : function (utftext) {
		    var string = "";
		    var i = 0;
		    var c = c1 = c2 = 0;

		    while ( i < utftext.length ) {

			    c = utftext.charCodeAt(i);

			    if (c < 128) {
				    string += String.fromCharCode(c);
				    i++;
			    }
			    else if((c > 191) && (c < 224)) {
				    c2 = utftext.charCodeAt(i+1);
				    string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
				    i += 2;
			    }
			    else {
				    c2 = utftext.charCodeAt(i+1);
				    c3 = utftext.charCodeAt(i+2);
				    string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
				    i += 3;
			    }

		    }

		    return string;
	    }
    };