forked from LaconicNetwork/cosmos-explorer
40 lines
1.3 KiB
TypeScript
40 lines
1.3 KiB
TypeScript
import { RequestParams, UdfResponse, UdfErrorResponse, logMessage } from './helpers';
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export class Requester {
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private _headers: HeadersInit | undefined;
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public constructor(headers?: HeadersInit) {
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if (headers) {
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this._headers = headers;
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}
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}
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public sendRequest<T extends UdfResponse>(datafeedUrl: string, urlPath: string, params?: RequestParams): Promise<T | UdfErrorResponse>;
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public sendRequest<T>(datafeedUrl: string, urlPath: string, params?: RequestParams): Promise<T>;
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public sendRequest<T>(datafeedUrl: string, urlPath: string, params?: RequestParams): Promise<T> {
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if (params !== undefined) {
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const paramKeys = Object.keys(params);
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if (paramKeys.length !== 0) {
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urlPath += '?';
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}
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urlPath += paramKeys.map((key: string) => {
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return `${encodeURIComponent(key)}=${encodeURIComponent(params[key].toString())}`;
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}).join('&');
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}
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logMessage('New request: ' + urlPath);
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// Send user cookies if the URL is on the same origin as the calling script.
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const options: RequestInit = { credentials: 'same-origin' };
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if (this._headers !== undefined) {
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options.headers = this._headers;
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}
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return fetch(`${datafeedUrl}/${urlPath}`, options)
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.then((response: Response) => response.text())
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.then((responseTest: string) => JSON.parse(responseTest));
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}
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}
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