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KB.http.request = function (method, url, headers, body) {
var successCallback = function() {};
var errorCallback = function() {};
function parseResponse(request) {
var redirect = request.getResponseHeader('X-Ajax-Redirect');
var location = request.getResponseHeader('Location');
if (redirect === 'self') {
window.location.reload();
} else if (redirect && redirect.indexOf('#') > -1) {
window.location = redirect.split('#')[0];
} else if (redirect) {
window.location = redirect;
} else if (location) {
window.location = location;
} else if (request.getResponseHeader('Content-Type') === 'application/json') {
try {
return JSON.parse(request.responseText);
} catch (e) {}
}
return request.responseText;
}
this.execute = function () {
var request = new XMLHttpRequest();
request.open(method, url, true);
request.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
for (var header in headers) {
if (headers.hasOwnProperty(header)) {
request.setRequestHeader(header, headers[header]);
}
}
request.onerror = function() {
errorCallback();
};
request.onreadystatechange = function() {
if (request.readyState === XMLHttpRequest.DONE) {
var response = parseResponse(request);
if (request.status === 200) {
successCallback(response);
} else {
errorCallback(response);
}
}
};
request.send(body);
return this;
};
this.success = function (callback) {
successCallback = callback;
return this;
};
this.error = function (callback) {
errorCallback = callback;
return this;
};
};
KB.http.get = function (url) {
return (new KB.http.request('GET', url)).execute();
};
KB.http.postJson = function (url, body) {
var headers = {
'Content-Type': 'application/json',
'Accept': 'application/json'
};
return (new KB.http.request('POST', url, headers, JSON.stringify(body))).execute();
};
KB.http.postForm = function (url, formElement) {
var formData = new FormData(formElement);
return (new KB.http.request('POST', url, {}, formData)).execute();
};
KB.http.uploadFile = function (url, file, onProgress, onComplete, onError, onServerError) {
var fd = new FormData();
fd.append('files[]', file);
var xhr = new XMLHttpRequest();
xhr.upload.addEventListener('progress', onProgress);
xhr.upload.addEventListener('error', onError);
xhr.open('POST', url, true);
xhr.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
xhr.onreadystatechange = function() {
if (xhr.readyState === XMLHttpRequest.DONE) {
if (xhr.status === 200) {
onComplete();
} else if (typeof onServerError !== 'undefined') {
onServerError(JSON.parse(xhr.responseText));
}
}
};
xhr.send(fd);
};
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