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import App from "app"; |
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const sa = App.libs.Superagent; |
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const EM = App.ServicesContainer.getNewInstance("EventManager"); |
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/** |
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* @callback requestCallback |
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* @param {mixed} error |
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* @param {Object} response |
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* @param {Object} reqquest |
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*/ |
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/** |
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* @callback successfulRequestCallback |
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* @param {mixed} error |
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* @param {Object} response |
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* @param {Object} reqquest |
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*/ |
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/** |
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* Utility class to make XHR requests |
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* |
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* @class Request |
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*/ |
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class Request { |
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constructor() { |
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this.EM = EM; |
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} |
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/** |
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* Register a new event listener to be called when a new request is started |
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* @param {requestCallback} cb |
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* @return {Request} |
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*/ |
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onStart(cb) { |
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"use strict"; |
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this.EM.subscribe("start", cb); |
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return this; |
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} |
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/** |
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* Register a new event listener to be called when an request is completed |
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* @param {requestCallback} cb |
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* @return {Request} |
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*/ |
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onStop(cb) { |
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"use strict"; |
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this.EM.subscribe("stop", cb); |
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return this; |
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} |
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/** |
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* Register a new event listener to be called when an request fails |
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* @param {requestCallback} cb |
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* @return {Request} |
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*/ |
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onError(cb) { |
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"use strict"; |
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this.EM.subscribe("error", cb); |
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return this; |
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} |
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/** |
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* Register a new event listener to be called when an request succeeds |
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* @param {successfulRequestCallback} cb |
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* @return {Request} |
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*/ |
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onSuccess(cb) { |
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"use strict"; |
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this.EM.subscribe("success", cb); |
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return this; |
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} |
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/** |
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* make a xhr |
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* @param {String} method get|post|put|delete|del |
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* @param {String} url |
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* @param {Object} data |
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* @param {successfulRequestCallback} onSuccess function to be called if the request succeeds |
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* @param {requestCallback} onError function to be called if the request fails |
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* @return {null} |
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*/ |
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send(method, url, data, onSuccess, onError) { |
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"use strict"; |
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const req = sa[method](url); |
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if (method === "get") { |
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req.query(data); |
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} else { |
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req.send(data); |
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} |
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this.EM.notify("start", req); |
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req.end((err, res) => { |
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this.EM.notify("stop", err, res, req); |
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if (err) { |
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this.EM.notify("error", err, res, req); |
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if (onError) { |
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onError(err, res, req); |
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} |
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} else { |
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this.EM.notify("success", res, req); |
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if (onSuccess) { |
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onSuccess(res, req); |
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} |
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} |
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}); |
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} |
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/** |
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* make a xhr with more options |
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* @param {{url: string, method: string, onStart: function, onStop: function, onSuccess: function, onError: function, headers: Object, type: string, data: Object}} config |
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* @param {String} config.url URL to make the request |
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* @param {String} config.method The method. One of: get, post, put, del, delete |
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* @param {Function} config.onStart Callback called before send the resquest |
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* @param {requestCallback} config.onStop Callback called after complete the request |
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* @param {successfulRequestCallback} config.onSuccess Callback for successful request. Called after onStop |
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* @param {requestCallback} config.onError Callback for unsuccessful request. Called after onStop |
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* @param {Object} config.headers Option headers. Example: {accept: "application/json"} |
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* @param {Object} config.data Data to send to the server |
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*/ |
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make(config) { |
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"use strict"; |
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let defaultOptions = { |
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url: "", |
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method: "get", |
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onStart: null, |
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onStop: null, |
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onSuccess: null, |
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onError: null, |
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headers: {}, |
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type: null, |
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data: {} |
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}; |
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let options = Object.assign({}, defaultOptions, config); |
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if (options.method === "delete") { |
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options.method = "del"; |
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} |
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let req = sa[options.method](options.url); |
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if (options.method === "get") { |
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req.query(options.data); |
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} else { |
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req.send(options.data); |
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} |
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if (options.type) { |
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req.type(options.type); |
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} |
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this.EM.notify("start", req); |
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if (typeof options.onStart === "function") { |
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options.onStart(req); |
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} |
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// headers |
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Object.keys(options.headers).map((header) => req.set(header, options.headers[header])); |
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req.end((err, res) => { |
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this.EM.notify("stop", err, res, req); |
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if (typeof options.onStop === "function") { |
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options.onStop(err, res, req); |
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} |
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if (err) { |
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this.EM.notify("error", err, res, req); |
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if (typeof options.onError === "function") { |
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options.onError(err, res, req); |
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} |
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} else { |
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this.EM.notify("success", res, req); |
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if (typeof options.onSuccess === "function") { |
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options.onSuccess(res, req); |
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} |
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} |
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}); |
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} |
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} |
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export default Request; |
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beeblebrox3 /
star
