89 lines
2.4 KiB
TypeScript
89 lines
2.4 KiB
TypeScript
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let customBackendURL: string;
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/**
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* get the domain of the api backend
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* @return string domain of backend http://x.x.x.x/bla
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*/
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export function getBackendDomain(): string {
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let userAgent = navigator.userAgent.toLowerCase();
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if (userAgent.indexOf(' electron/') > -1) {
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// Electron-specific code - force a custom backendurl
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return (customBackendURL);
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} else {
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// use custom only if defined
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if (customBackendURL) {
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return (customBackendURL);
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} else {
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return (window.location.origin);
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}
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}
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}
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/**
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* set a custom backend domain
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* @param domain a url in format [http://x.x.x.x/somanode]
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*/
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export function setCustomBackendDomain(domain: string) {
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customBackendURL = domain;
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}
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/**
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* a helper function to get the api path
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*/
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function getAPIDomain(): string {
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return getBackendDomain() + '/api/';
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}
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/**
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* interface how an api request should look like
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*/
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interface ApiBaseRequest {
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action: string,
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[_: string]: string
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}
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/**
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* helper function to build a formdata for requesting post data correctly
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* @param args api request object
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*/
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function buildFormData(args: ApiBaseRequest): FormData {
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const req = new FormData();
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for (const i in args) {
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req.append(i, args[i]);
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}
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return req;
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}
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/**
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* A backend api call
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* @param apinode which api backend handler to call
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* @param fd the object to send to backend
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* @param callback the callback with json reply from backend
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* @param errorcallback a optional callback if an error occured
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*/
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export function callAPI(apinode: string, fd: ApiBaseRequest, callback: (_: object) => void, errorcallback: (_: object) => void = (_: object) => {
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}): void {
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fetch(getAPIDomain() + apinode, {method: 'POST', body: buildFormData(fd)})
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.then((response) => response.json()
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.then((result) => {
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callback(result);
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})).catch(reason => errorcallback(reason));
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}
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/**
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* A backend api call
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* @param apinode which api backend handler to call
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* @param fd the object to send to backend
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* @param callback the callback with PLAIN text reply from backend
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*/
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export function callAPIPlain(apinode: string, fd: ApiBaseRequest, callback: (_: any) => void): void {
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fetch(getAPIDomain() + apinode, {method: 'POST', body: buildFormData(fd)})
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.then((response) => response.text()
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.then((result) => {
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callback(result);
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}));
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}
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