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import ResponseDecodingError from '../Exception/ResponseDecodingError';
import NetworkError from '../Exception/NetworkError';
import HttpError from '../Exception/Http/HttpError';
import ResponseContentTypeError from '../Exception/ResponseContentTypeError';
import HttpResponse from './HttpResponse';
export default class HttpRequest {
/**
*
* @param {String} [url=null]
*/
constructor(url = null) {
this._url = url;
this._data = null;
this._userAgent = null;
this._responseType = 'application/json';
}
/**
*
* @returns {(String|null)}
*/
getUrl() {
return this._url;
}
/**
*
* @param {Session} value
* @returns {HttpRequest}
*/
setUrl(value) {
this._url = value;
return this;
}
/**
*
* @param {Object} value
* @return {HttpRequest}
*/
setData(value) {
this._data = value;
return this;
}
/**
*
* @param {String} value
* @return {HttpRequest}
*/
setUserAgent(value) {
this._userAgent = value;
return this;
}
/**
*
* @returns {Promise<HttpResponse>}
*/
async send() {
let options = this._getRequestOptions();
let httpResponse = await this._executeRequest(this._url, options);
let expectedContentType = options.headers.get('content-type');
let contentType = httpResponse.headers.get('content-type');
let response = new HttpResponse()
.setContentType(contentType)
.setHeaders(httpResponse.headers)
.setHttpStatus(httpResponse.status)
.setHttpResponse(httpResponse);
if(expectedContentType !== null && contentType && contentType.indexOf(expectedContentType) === -1) {
throw new ResponseContentTypeError(expectedContentType, contentType, httpResponse);
} else if(contentType && contentType.indexOf('application/json') !== -1) {
await this._processJsonResponse(httpResponse, response);
} else {
await this._processBinaryResponse(httpResponse, response);
}
return response;
}
/**
*
* @return {{redirect: string, headers: Headers, method: string, credentials: string}}
* @private
*/
_getRequestOptions() {
let headers = this._getRequestHeaders();
let method = 'GET';
let options = {method, headers, credentials: 'omit', redirect: 'error'};
if(this._data !== null) {
options.body = JSON.stringify(this._data);
method = 'POST';
}
options.method = method;
return options;
}
/**
*
* @return {Headers}
* @private
*/
_getRequestHeaders() {
let headers = new Headers();
headers.append('accept', this._responseType);
if(this._data !== null) {
headers.append('content-type', 'application/json');
}
if(this._userAgent !== null) {
headers.append('user-agent', this._userAgent);
}
return headers;
}
/**
*
* @param {String} url
* @param {Object} options
* @returns {Promise<Response>}
* @private
*/
async _executeRequest(url, options) {
try {
let request = new Request(url, options);
return await fetch(request);
} catch(e) {
throw e;
}
}
/**
*
* @param {Response} httpResponse
* @param {HttpResponse} response
* @private
*/
async _processJsonResponse(httpResponse, response) {
if(!httpResponse.ok) {
throw this._getHttpError(httpResponse);
}
try {
let json = await httpResponse.json();
response.setData(json);
} catch(e) {
throw new ResponseDecodingError(response, e);
}
}
/**
*
* @param {Response} httpResponse
* @param {HttpResponse} response
* @private
*/
async _processBinaryResponse(httpResponse, response) {
if(!httpResponse.ok) {
throw this._getHttpError(httpResponse);
}
try {
let blob = await httpResponse.blob();
response.setData(blob);
} catch(e) {
throw new ResponseDecodingError(response, e);
}
}
/**
*
* @param {Response} response
* @private
*/
_getHttpError(response) {
if(response.status > 99) {
return new HttpError(response);
}
return new NetworkError(response);
}
}
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