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import { take } from 'rxjs/operators';
import { AppConstants } from '@unpispas/upp-defs';
import { HttpResponseTypes, HttpSerializer } from './http';
import { stateService } from './state';
import { toastService } from './toasts';
import { downloadService } from './upload';
import { languageService } from './language';
import { httpService } from './http';
/**
* @class adhocService
* @description Service for handling HTTP requests with additional custom parameters, error handling, and toast notifications.
*/
@Injectable({
providedIn: 'root'
})
export class adhocService {
/**
* @constructor
* @param {languageService} lang - Service for managing application language settings.
* @param {stateService} state - Service for managing session and device state information.
* @param {httpService} http - Service for handling HTTP requests.
* @param {toastService} toast - Service for displaying toast notifications.
*/
constructor(private lang: languageService, private state: stateService, private http: httpService, private toast: toastService, private download: downloadService){
// nothing to do
}
/**
* @method DoRequest
* @description Sends an HTTP GET or POST request based on the provided parameters.
* It includes additional custom query parameters (device, session, and language), handles errors, and shows toast notifications if needed.
*
* @param {string} url - The URL endpoint for the request.
* @param {any} [params=null] - Optional query parameters to append to the request URL.
* @param {any} [post=null] - Optional body for a POST request. If null, a GET request is made.
* @param {boolean} [showtoast=true] - Whether to show a toast notification on error.
* @param {any} [headers=null] - Optional HTTP headers to include in the request.
* @param {HttpResponseTypes | null} [responseType=null] - Optional response type for the request.
* @param {HttpSerializer | null} [serializer=null] - Optional serializer for the request.
* @param {number | null} [timeout=null] - Optional timeout duration for the request.
*
* @returns {Promise<any>} A promise that resolves with the response data if successful, or rejects with an error message.
*/
DoRequest(url: string, params: any = null, post: any = null, showtoast = true, headers: any = null, responseType: HttpResponseTypes | null = null, serializer: HttpSerializer | null = null, timeout: number | null = null) : Promise <any>{
let _getparams = ''
function _sep(_getparams:string){
return (_getparams.length == 0) ? '?' : '&';
}
if (this.state.device){
_getparams += _sep(_getparams) + "device=" + this.state.device;
}
if (this.state.session){
_getparams += _sep(_getparams) + "session=" + this.state.session;
}
const _lang = this.lang.GetLanguage(true);
if (_lang){
_getparams += _sep(_getparams) + "lang=" + _lang;
}
Iif (this.state.place){
_getparams += _sep(_getparams) + "place=" + this.state.place;
}
if (params){
for(const _param in params){
_getparams += _sep(_getparams) + _param + "=" + params[_param];
}
}
let _request = null;
if (post){
_request = this.http.post(AppConstants.baseURL + url + _getparams, post, (headers) ? headers : httpService.headers, responseType, serializer, timeout);
}
else {
_request = this.http.get(AppConstants.baseURL + url + _getparams, true, (headers) ? headers : httpService.headers, responseType, timeout);
}
return new Promise((resolve, reject) => {
_request.pipe(take(1)).subscribe({
next: (data) => {
if (data !== null){
resolve(data);
}
else E{
reject("no response");
}
},
error: (error) => {
reject(error);
if (showtoast){
if (error.status != 0){
this.toast.ShowAlert('danger', this.lang.tr('@http_request_error', [ error.status ]));
console.error(this.lang.tr('@http_request_error', [ error.status ]));
}
else {
console.error("[HTTP] status = 0 (you are offline)");
}
}
},
complete: () => {
// nothing to do
}
});
});
}
/**
* @method Download
* @description Downloads a file from a given URL, either saving it locally or opening it in a new tab.
* It also manages UI interactions like showing a loading indicator while the file is being fetched.
*
* @param {string} url - The URL from which the file should be downloaded.
* @param {string} filename - The desired filename for the downloaded file.
* @param {any} [headers=null] - Optional HTTP headers to include in the request, used for determining file type.
* @param {boolean} [download=true] - If `true`, the file will be downloaded. If `false`, it will be opened in a new tab.
* @param {string | null} [target=null] - If `download` is `false`, this sets the target attribute for opening the file (e.g., `_blank`).
*
* @returns {Promise<boolean>} A promise that resolves to `true` if the file is successfully downloaded or opened, or `false` if the download fails.
*
* @example
* // Download a file and save it locally
* await adhocService.Download('https://example.com/file.pdf', 'myfile.pdf');
*
* @example
* // Open a file in a new tab instead of downloading
* await adhocService.Download('https://example.com/file.pdf', '', null, false, '_blank');
*/
async Download(url: string, filename: string, headers: any = null, download=true, target=null): Promise <boolean> {
let data = null;
console.info("[DOWNLOAD] url: '" + url + "'");
this.toast.ShowWait();
try {
data = await this.download.file(url);
}
catch {
// nothing to do
}
this.toast.HideWait();
Iif (data){
const file = new Blob([data], { type: headers ? headers['Content-Type'] : 'application/octet-stream' });
const link = document.createElement("a");
link.href = URL.createObjectURL(file);
console.info("[DOWNLOAD] href: '" + link.href + "'");
if (!download){ // open file in new page (if target = '_blank')
Iif (target) {
link.target = target;
}
}
else { // download the file
link.download = filename;
}
document.body.appendChild(link);
link.click();
setTimeout(() => {
document.body.removeChild(link);
URL.revokeObjectURL(link.href)
}, 60000); // wait 1 minute
return true;
}
return false; // no data has been donloaded
}
} |