132 lines
3.6 KiB
JavaScript
132 lines
3.6 KiB
JavaScript
var App = App || {};
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App.API = function(_, jQuery, promise, appState) {
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var baseUrl = '/api/';
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var AJAX_UNSENT = 0;
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var AJAX_OPENED = 1;
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var AJAX_HEADERS_RECEIVED = 2;
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var AJAX_LOADING = 3;
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var AJAX_DONE = 4;
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var cache = {};
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function get(url, data) {
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return request('GET', url, data);
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}
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function post(url, data) {
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return request('POST', url, data);
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}
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function put(url, data) {
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return request('PUT', url, data);
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}
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function _delete(url, data) {
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return request('DELETE', url, data);
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}
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function getCacheKey(method, url, data) {
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return JSON.stringify({method: method, url: url, data: data});
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}
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function clearCache() {
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cache = {};
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}
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function request(method, url, data) {
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if (method === 'GET') {
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return requestWithCache(method, url, data);
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}
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clearCache();
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return requestWithAjax(method, url, data);
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}
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function requestWithCache(method, url, data) {
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var cacheKey = getCacheKey(method, url, data);
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if (_.has(cache, cacheKey)) {
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return promise.make(function(resolve, reject) {
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resolve(cache[cacheKey]);
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});
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}
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return promise.make(function(resolve, reject) {
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promise.wait(requestWithAjax(method, url, data))
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.then(function(response) {
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setCache(method, url, data, response);
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resolve(response);
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}).fail(function(response) {
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reject(response);
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});
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});
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}
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function setCache(method, url, data, response) {
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var cacheKey = getCacheKey(method, url, data);
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cache[cacheKey] = response;
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}
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function requestWithAjax(method, url, data) {
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var fullUrl = baseUrl + '/' + url;
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fullUrl = fullUrl.replace(/\/{2,}/, '/');
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var xhr = null;
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var apiPromise = promise.make(function(resolve, reject) {
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var options = {
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headers: {
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'X-Authorization-Token': appState.get('loginToken') || '',
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},
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success: function(data, textStatus, xhr) {
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resolve({
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status: xhr.status,
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json: stripMeta(data)});
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},
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error: function(xhr, textStatus, errorThrown) {
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reject({
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status: xhr.status,
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json: xhr.responseJSON ?
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stripMeta(xhr.responseJSON) :
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{error: errorThrown}});
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},
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type: method,
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url: fullUrl,
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data: data,
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cache: false,
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};
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if (data instanceof FormData) {
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options.processData = false;
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options.contentType = false;
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}
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xhr = jQuery.ajax(options);
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});
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apiPromise.xhr = xhr;
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return apiPromise;
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}
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function stripMeta(data) {
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var result = {};
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_.each(data, function(v, k) {
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if (!k.match(/^__/)) {
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result[k] = v;
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}
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});
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return result;
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}
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return {
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get: get,
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post: post,
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put: put,
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delete: _delete,
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AJAX_UNSENT: AJAX_UNSENT,
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AJAX_OPENED: AJAX_OPENED,
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AJAX_HEADERS_RECEIVED: AJAX_HEADERS_RECEIVED,
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AJAX_LOADING: AJAX_LOADING,
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AJAX_DONE: AJAX_DONE,
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};
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};
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App.DI.registerSingleton('api', ['_', 'jQuery', 'promise', 'appState'], App.API);
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