Resolve "Télécharger une archive"

Closes #23 (closed)

client/src/app/instance/search/components/result/renderer/download-renderer.component.ts

@@ -7,8 +7,7 @@
  * file that was distributed with this source code.
  */
 
-import { Component, Input, ChangeDetectionStrategy } from '@angular/core';
-import { HttpClient } from '@angular/common/http';
+import { Component, Input, Output, EventEmitter, ChangeDetectionStrategy } from '@angular/core';
 
 import { DownloadRendererConfig } from 'src/app/metamodel/models/renderers/download-renderer-config.model';
 import { getHost } from 'src/app/shared/utils';
@@ -28,8 +27,9 @@ export class DownloadRendererComponent {
     @Input() datasetName: string;
     @Input() datasetPublic: boolean;
     @Input() config: DownloadRendererConfig;
+    @Output() downloadFile: EventEmitter<{url: string, fileId: string, datasetName: string, filename: string}> = new EventEmitter();
 
-    constructor(private appConfig: AppConfigService, private http: HttpClient) { }
+    constructor(private appConfig: AppConfigService) { }
 
     /**
      * Returns link href.
@@ -50,21 +50,23 @@ export class DownloadRendererComponent {
     }
 
     /**
-     * Downloads file on click.
+     * Starts downloading file on click.
      */
     click(event): void {
         event.preventDefault();
+        
+        const url = this.getHref();
+        const filename = url.substring(url.lastIndexOf('/') + 1);
 
-        const href = this.getHref();
-        this.http.get(href, { responseType: "blob" }).subscribe(
-            data => {
-                const filename = href.substring(href.lastIndexOf('/') + 1);
+        const n = Math.floor(Math.random() * 11);
+        const k = Math.floor(Math.random() * 1000000);
+        const m = String.fromCharCode(n) + k;
 
-                let downloadLink = document.createElement('a');
-                downloadLink.href = window.URL.createObjectURL(data);
-                downloadLink.setAttribute('download', filename);
-                downloadLink.click();
-            }
-        );
+        this.downloadFile.emit({
+            url,
+            fileId: m,
+            datasetName: this.datasetName,
+            filename
+        });
     }
 }