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refactor cookieMixinFactory

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isolate cookie business logic from react mixin logic so that they are more modular. And use the cookie business logic to set translation objects on the window
This commit is contained in:
Matthew Taylor 2015-10-15 23:05:57 -04:00
parent be5d8cd3eb
commit b8972d545c
5 changed files with 117 additions and 43 deletions
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4
server/template.html
View file

@ -25,8 +25,8 @@
<!-- Shim/Sham ES5 polyfill for older browsers -->
<script src="/js/lib/polyfill.min.js"></script>
<!-- Session provider -->
<script src="/js/session.bundle.js"></script>
<!-- Initialize (Locale & Session) -->
<script src="/js/init.bundle.js"></script>
</head>
<body>

78
src/init.js Normal file
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@ -0,0 +1,78 @@
var api = require('./mixins/api.jsx').api;
var jar = require('./lib/jar');
// var locales = require('../languages.json');
// var translations = {
// en: require('../en.json')
// };
// for (var id in locales) {
// try {
// translations[id] = require('../locales/' + id + '.json');
// } catch
// }
var translations = require('../locales/translations.json');
require('custom-event-polyfill');
// Session
(function () {
window._session = {};
/**
* Binds the object to private session variable and dispatches a global
* "session" event.
*
* @param {object} Session object
*
* @return {void}
*/
window.updateSession = function (session) {
window._session = session;
var sessionEvent = new CustomEvent('session', session);
window.dispatchEvent(sessionEvent);
};
/**
* Gets a session object from the local proxy method. Calls "updateSession"
* once session has been returned from the proxy.
*
* @return {void}
*/
window.refreshSession = function () {
api({
host: '',
uri: '/session/'
}, function (err, body) {
window.updateSession(body);
});
};
// Fetch session
window.refreshSession();
})();
// L10N
(function () {
/**
* Bind locale code from cookie if available. Uses navigator language API as a fallback.
*
* @return {string}
*/
function updateLocale () {
var obj = jar.get('scratchlanguage');
if (typeof obj === 'undefined') {
obj = window.navigator.userLanguage || window.navigator.language;
}
if (typeof translations[obj] === 'undefined') {
// Fall back on the split
obj = obj.split('-')[0];
}
if (typeof translations[obj] === 'undefined') {
// Language appears to not be supported – return `null`
obj = null;
}
return obj;
}
window._locale = updateLocale() || 'en';
window._translations = translations;
})();

32
src/lib/jar.js Normal file
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@ -0,0 +1,32 @@
var cookie = require('cookie');
var xhr = require('xhr');
var module = module.exports = {};
module.get = function (name, callback) {
// Get cookie by name
var obj = cookie.parse(document.cookie) || {};
// Handle optional callback
if (typeof callback === 'function') {
if (typeof obj === 'undefined') return callback('Cookie not found.');
return callback(null, obj[name]);
}
return obj[name];
};
module.use = function (name, uri, callback) {
// Attempt to get cookie
module.get(name, function (err, obj) {
if (typeof obj !== 'undefined') return callback(null, obj);
// Make XHR request to cookie setter uri
xhr({
uri: uri
}, function (err) {
if (err) return callback(err);
module.get(name, callback);
});
});
};

25
src/mixins/cookieMixinFactory.jsx
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@ -1,31 +1,16 @@
var cookie = require('cookie');
var xhr = require('xhr');
var jar = require('../lib/jar');
var cookieMixinFactory = function (cookieName, cookieSetter) {
var capitalizedCookieName = cookieName.charAt(0).toUpperCase() + cookieName.slice(1);
var getterName = "get" + capitalizedCookieName;
var userName = "use" + capitalizedCookieName;
var mixin = {}
var mixin = {};
mixin[getterName] = function (callback) {
var obj = cookie.parse(document.cookie) || {};
if (typeof obj[cookieName] === 'undefined') return callback('Cookie not found.');
callback(null, obj[cookieName]);
jar.get(cookieName, callback);
};
mixin[userName] = function (callback) {
this[getterName](function (err, cookieValue) {
if (cookieValue) return callback(null, cookieValue);
xhr({
'uri': cookieSetter
}, function (err) {
if (err) return callback(err);
this[getterName](function (err, cookieValue) {
if (err) return callback(err);
callback(err, cookieValue);
});
}.bind(this));
}.bind(this));
}
jar.use(cookieName, cookieSetter, callback);
};
return mixin;
};

21
src/session.js
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@ -1,21 +0,0 @@
var api = require('./mixins/api.jsx').api;
require('custom-event-polyfill');
window._session = {};
window.updateSession = function (session) {
window._session = session;
var sessionEvent = new CustomEvent('session', session);
window.dispatchEvent(sessionEvent);
};
window.refreshSession = function () {
api({
host: '',
uri: '/session/'
}, function (err, body) {
window.updateSession(body);
});
};
window.refreshSession();