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import { fetchAsync, logUtils } from '@0x/utils';
import * as _ from 'lodash';
import * as queryString from 'query-string';
import { errorReporter } from 'ts/utils/error_reporter';
const logErrorIfPresent = (response: Response, requestedURL: string) => {
if (response.status !== 200) {
const errorText = `Error requesting url: ${requestedURL}, ${response.status}: ${response.statusText}`;
logUtils.log(errorText);
const error = Error(errorText);
errorReporter.report(error);
throw error;
}
};
export const fetchUtils = {
async requestAsync(baseUrl: string, path: string, queryParams?: object): Promise<any> {
const query = queryStringFromQueryParams(queryParams);
const url = `${baseUrl}${path}${query}`;
const response = await fetchAsync(url);
logErrorIfPresent(response, url);
const result = await response.json();
return result;
},
async postAsync(baseUrl: string, path: string, body: object): Promise<Response> {
const url = `${baseUrl}${path}`;
const response = await fetchAsync(url, {
method: 'POST',
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify(body),
});
logErrorIfPresent(response, url);
return response;
},
};
function queryStringFromQueryParams(queryParams?: object): string {
// if params are undefined or empty, return an empty string
if (_.isUndefined(queryParams) || _.isEmpty(queryParams)) {
return '';
}
// stringify the formatted object
const stringifiedParams = queryString.stringify(queryParams);
return `?${stringifiedParams}`;
}
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