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import { BytesPipe } from '../../iqb-common';
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import { Component, EventEmitter, Input, OnDestroy, OnInit, Output, Optional, Inject, forwardRef } from '@angular/core';
import { HttpClient, HttpEventType, HttpHeaders, HttpParams,
HttpErrorResponse, HttpEvent } from '@angular/common/http';
@Component({
selector: 'iqb-file-upload',
templateUrl: `./iqbFileUpload.component.html`,
exportAs: 'iqbFileUpload',
host: {
'class': 'iqb-file-upload',
},
styleUrls: ['./../iqbFile.scss'],
})
export class IqbFileUploadComponent implements OnInit {
constructor(
private myHttpClient: HttpClient) { }
// ''''''''''''''''''''''''
private _status: UploadStatus;
get status(): UploadStatus {
return this._status;
}
set status(newstatus: UploadStatus) {
this._status = newstatus;
this.statusChangedEvent.emit(this);
}
// ''''''''''''''''''''''''
private requestResponseText: string;
get statustext(): string {
let myreturn = '';
switch (this._status) {
case UploadStatus.busy: {
myreturn = 'Bitte warten';
break;
}
case UploadStatus.ready: {
myreturn = 'Bereit';
break;
}
default: {
myreturn = this.requestResponseText;
break;
}
}
return myreturn;
}
/* Http request input bindings */
@Input()
httpUrl = 'http://localhost:8080';
@Input()
httpRequestHeaders: HttpHeaders | {
[header: string]: string | string[];
} = new HttpHeaders().set('Content-Type', 'multipart/form-data');
@Input()
httpRequestParams: HttpParams | {
[param: string]: string | string[];
} = new HttpParams();
@Input()
fileAlias = 'file';
@Input()
tokenName = '';
@Input()
token = '';
@Input()
folderName = '';
@Input()
folder = '';
@Input()
get file(): any {
return this._file;
}
set file(file: any) {
this._file = file;
this._filedate = this._file.lastModified;
this.total = this._file.size;
}
@Input()
set id(id: number) {
this._id = id;
}
get id(): number {
return this._id;
}
@Output() removeFileRequestEvent = new EventEmitter<IqbFileUploadComponent>();
@Output() statusChangedEvent = new EventEmitter<IqbFileUploadComponent>();
private progressPercentage = 0;
public loaded = 0;
private total = 0;
private _file: any;
private _filedate = '';
private _id: number;
private fileUploadSubscription: any;
ngOnInit() {
this._status = UploadStatus.ready;
this.requestResponseText = '';
}
// ==================================================================
public upload(): void {
if (this.status === UploadStatus.ready) {
this.status = UploadStatus.busy;
const formData = new FormData();
formData.set(this.fileAlias, this._file, this._file.name);
if ((typeof this.tokenName !== 'undefined') && (typeof this.token !== 'undefined')) {
if (this.tokenName.length > 0) {
formData.append(this.tokenName, this.token);
}
}
if ((typeof this.folderName !== 'undefined') && (typeof this.folder !== 'undefined')) {
if (this.folderName.length > 0) {
formData.append(this.folderName, this.folder);
}
}
this.fileUploadSubscription = this.myHttpClient.post(this.httpUrl, formData, {
// headers: this.httpRequestHeaders,
observe: 'events',
params: this.httpRequestParams,
reportProgress: true,
responseType: 'json'
}).subscribe((event: HttpEvent<any>) => {
if (event.type === HttpEventType.UploadProgress) {
this.progressPercentage = Math.floor( event.loaded * 100 / event.total );
this.loaded = event.loaded;
this.total = event.total;
this.status = UploadStatus.busy;
} else if (event.type === HttpEventType.Response) {
this.requestResponseText = event.body;
if ((this.requestResponseText.length > 5) && (this.requestResponseText.substr(0, 2) === 'e:')) {
this.requestResponseText = this.requestResponseText.substr(2);
this.status = UploadStatus.error;
} else {
this.status = UploadStatus.ok;
}
}
}, (errorObj: HttpErrorResponse) => {
if (this.fileUploadSubscription) {
this.fileUploadSubscription.unsubscribe();
}
this.status = UploadStatus.error;
if (errorObj.status === 401) {
this.requestResponseText = 'Fehler: Zugriff verweigert - bitte (neu) anmelden!';
} else if (errorObj.status === 503) {
this.requestResponseText = 'Fehler: Server meldet Problem mit Datenbank oder Datei zu groß.';
} else if (errorObj.error instanceof ErrorEvent) {
this.requestResponseText = 'Fehler: ' + (<ErrorEvent>errorObj.error).message;
} else {
this.requestResponseText = 'Fehler: ' + errorObj.message;
}
});
}
}
// ==================================================================
public remove(): void {
if (this.fileUploadSubscription) {
this.fileUploadSubscription.unsubscribe();
}
this.removeFileRequestEvent.emit(this);
}
}
export enum UploadStatus {
ready,
busy,
ok,
error
}