Load fileUrl on demand for evidence

Fix #168

Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>

packages/helpers/src/dom.ts

@@ -5,3 +5,18 @@ export function withViewTransition(fn: () => void) {
     }
     document.startViewTransition(fn);
 }
+
+export function downloadFile(url: string | undefined | null, filename: string) {
+    if (!url) {
+        alert("Cannot download this file, fileUrl is not provided");
+        return;
+    }
+    const link = document.createElement("a");
+    link.setAttribute("href", url);
+    link.setAttribute("hidden", "hidden");
+    link.setAttribute("download", filename);
+    link.style.display = "none";
+    document.body.appendChild(link);
+    link.click();
+    document.body.removeChild(link);
+}

packages/helpers/src/index.ts

@@ -6,7 +6,7 @@ export {
     getRiskLikelihoods,
     getSeverity,
 } from "./risk";
-export { withViewTransition } from "./dom";
+export { withViewTransition, downloadFile } from "./dom";
 export { times, groupBy, isEmpty } from "./array";
 export { randomInt } from "./number";
 export { getMeasureStateLabel, measureStates } from "./measure";