'use strict';
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var utils = require('./../utils');
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var transformData = require('./transformData');
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var isCancel = require('../cancel/isCancel');
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var defaults = require('../defaults');
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/**
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* Throws a `Cancel` if cancellation has been requested.
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*/
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function throwIfCancellationRequested(config) {
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if (config.cancelToken) {
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config.cancelToken.throwIfRequested();
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}
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}
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/**
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* Dispatch a request to the server using the configured adapter.
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*
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* @param {object} config The config that is to be used for the request
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* @returns {Promise} The Promise to be fulfilled
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*/
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module.exports = function dispatchRequest(config) {
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throwIfCancellationRequested(config);
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// Ensure headers exist
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config.headers = config.headers || {};
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// Transform request data
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config.data = transformData.call(
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config,
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config.data,
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config.headers,
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config.transformRequest
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);
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// Flatten headers
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config.headers = utils.merge(
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config.headers.common || {},
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config.headers[config.method] || {},
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config.headers
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);
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utils.forEach(
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['delete', 'get', 'head', 'post', 'put', 'patch', 'common'],
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function cleanHeaderConfig(method) {
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delete config.headers[method];
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}
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);
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var adapter = config.adapter || defaults.adapter;
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return adapter(config).then(function onAdapterResolution(response) {
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throwIfCancellationRequested(config);
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// Transform response data
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response.data = transformData.call(
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config,
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response.data,
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response.headers,
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config.transformResponse
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);
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return response;
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}, function onAdapterRejection(reason) {
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if (!isCancel(reason)) {
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throwIfCancellationRequested(config);
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// Transform response data
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if (reason && reason.response) {
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reason.response.data = transformData.call(
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config,
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reason.response.data,
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reason.response.headers,
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config.transformResponse
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);
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}
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}
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return Promise.reject(reason);
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});
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};
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