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import utils from './../utils.js';
import settle from './../core/settle.js';
import transitionalDefaults from '../defaults/transitional.js';
import AxiosError from '../core/AxiosError.js';
import CanceledError from '../cancel/CanceledError.js';
import parseProtocol from '../helpers/parseProtocol.js';
import platform from '../platform/index.js';
import AxiosHeaders from '../core/AxiosHeaders.js';
import {progressEventReducer} from '../helpers/progressEventReducer.js';
import resolveConfig from "../helpers/resolveConfig.js";
const isXHRAdapterSupported = typeof XMLHttpRequest !== 'undefined';
export default isXHRAdapterSupported && function (config) {
return new Promise(function dispatchXhrRequest(resolve, reject) {
const _config = resolveConfig(config);
let requestData = _config.data;
const requestHeaders = AxiosHeaders.from(_config.headers).normalize();
let {responseType, onUploadProgress, onDownloadProgress} = _config;
let onCanceled;
let uploadThrottled, downloadThrottled;
let flushUpload, flushDownload;
function done() {
flushUpload && flushUpload(); // flush events
flushDownload && flushDownload(); // flush events
_config.cancelToken && _config.cancelToken.unsubscribe(onCanceled);
_config.signal && _config.signal.removeEventListener('abort', onCanceled);
}
let request = new XMLHttpRequest();
request.open(_config.method.toUpperCase(), _config.url, true);
// Set the request timeout in MS
request.timeout = _config.timeout;
function onloadend() {
if (!request) {
return;
}
// Prepare the response
const responseHeaders = AxiosHeaders.from(
'getAllResponseHeaders' in request && request.getAllResponseHeaders()
);
const responseData = !responseType || responseType === 'text' || responseType === 'json' ?
request.responseText : request.response;
const response = {
data: responseData,
status: request.status,
statusText: request.statusText,
headers: responseHeaders,
config,
request
};
settle(function _resolve(value) {
resolve(value);
done();
}, function _reject(err) {
reject(err);
done();
}, response);
// Clean up request
request = null;
}
if ('onloadend' in request) {
// Use onloadend if available
request.onloadend = onloadend;
} else {
// Listen for ready state to emulate onloadend
request.onreadystatechange = function handleLoad() {
if (!request || request.readyState !== 4) {
return;
}
// The request errored out and we didn't get a response, this will be
// handled by onerror instead
// With one exception: request that using file: protocol, most browsers
// will return status as 0 even though it's a successful request
if (request.status === 0 && !(request.responseURL && request.responseURL.indexOf('file:') === 0)) {
return;
}
// readystate handler is calling before onerror or ontimeout handlers,
// so we should call onloadend on the next 'tick'
setTimeout(onloadend);
};
}
// Handle browser request cancellation (as opposed to a manual cancellation)
request.onabort = function handleAbort() {
if (!request) {
return;
}
reject(new AxiosError('Request aborted', AxiosError.ECONNABORTED, config, request));
// Clean up request
request = null;
};
// Handle low level network errors
request.onerror = function handleError() {
// Real errors are hidden from us by the browser
// onerror should only fire if it's a network error
reject(new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request));
// Clean up request
request = null;
};
// Handle timeout
request.ontimeout = function handleTimeout() {
let timeoutErrorMessage = _config.timeout ? 'timeout of ' + _config.timeout + 'ms exceeded' : 'timeout exceeded';
const transitional = _config.transitional || transitionalDefaults;
if (_config.timeoutErrorMessage) {
timeoutErrorMessage = _config.timeoutErrorMessage;
}
reject(new AxiosError(
timeoutErrorMessage,
transitional.clarifyTimeoutError ? AxiosError.ETIMEDOUT : AxiosError.ECONNABORTED,
config,
request));
// Clean up request
request = null;
};
// Remove Content-Type if data is undefined
requestData === undefined && requestHeaders.setContentType(null);
// Add headers to the request
if ('setRequestHeader' in request) {
utils.forEach(requestHeaders.toJSON(), function setRequestHeader(val, key) {
request.setRequestHeader(key, val);
});
}
// Add withCredentials to request if needed
if (!utils.isUndefined(_config.withCredentials)) {
request.withCredentials = !!_config.withCredentials;
}
// Add responseType to request if needed
if (responseType && responseType !== 'json') {
request.responseType = _config.responseType;
}
// Handle progress if needed
if (onDownloadProgress) {
([downloadThrottled, flushDownload] = progressEventReducer(onDownloadProgress, true));
request.addEventListener('progress', downloadThrottled);
}
// Not all browsers support upload events
if (onUploadProgress && request.upload) {
([uploadThrottled, flushUpload] = progressEventReducer(onUploadProgress));
request.upload.addEventListener('progress', uploadThrottled);
request.upload.addEventListener('loadend', flushUpload);
}
if (_config.cancelToken || _config.signal) {
// Handle cancellation
// eslint-disable-next-line func-names
onCanceled = cancel => {
if (!request) {
return;
}
reject(!cancel || cancel.type ? new CanceledError(null, config, request) : cancel);
request.abort();
request = null;
};
_config.cancelToken && _config.cancelToken.subscribe(onCanceled);
if (_config.signal) {
_config.signal.aborted ? onCanceled() : _config.signal.addEventListener('abort', onCanceled);
}
}
const protocol = parseProtocol(_config.url);
if (protocol && platform.protocols.indexOf(protocol) === -1) {
reject(new AxiosError('Unsupported protocol ' + protocol + ':', AxiosError.ERR_BAD_REQUEST, config));
return;
}
// Send the request
request.send(requestData || null);
});
}