Fix neurosift for preview stub files

src/electron/frontend/core/components/NWBFilePreview.js

@@ -1,8 +1,9 @@
 import { LitElement, css, html } from "lit";
 import { InspectorList } from "./InspectorList";
-import { Neurosift, getURLFromFilePath } from "./Neurosift";
+import { Neurosift } from "./Neurosift";
 import { unsafeHTML } from "lit/directives/unsafe-html.js";
 import { run } from "../../utils/run";
+import { baseUrl } from "../server/globals";
 
 import { until } from "lit/directives/until.js";
 import { InstanceManager } from "./InstanceManager";
@@ -48,17 +49,38 @@ class NWBPreviewInstance extends LitElement {
         super();
         this.file = file;
         this.project = project;
+        this.neurosiftUrl = undefined;
 
         window.addEventListener("online", () => this.requestUpdate());
         window.addEventListener("offline", () => this.requestUpdate());
+
+        // Register the file when the instance is created
+        this.registerFile(this.file);
+    }
+
+    async registerFile(path) {
+        if (path) {
+            try {
+                // Enable access to the explicit file path
+                const result = await fetch(`${baseUrl}/files/${path}`, {
+                    method: "POST",
+                }).then((res) => res.text());
+
+                // Set the URL for Neurosift
+                if (result) this.neurosiftUrl = result;
+                this.requestUpdate();
+            } catch (error) {
+                console.error("Error registering file:", error);
+            }
+        }
     }
 
     render() {
         const isOnline = navigator.onLine;
 
         return isOnline
             ? new Neurosift({
-                  url: getURLFromFilePath(this.file, this.project),
+                  url: this.neurosiftUrl,
                   fullscreen: false,
               })
             : until(

src/electron/frontend/core/components/Neurosift.ts

@@ -1,14 +1,6 @@
 import { LitElement, css, html, CSSResult, TemplateResult } from "lit";
 import { Loader } from "./Loader";
 import { FullScreenToggle } from "./FullScreenToggle";
-import { baseUrl } from "../server/globals";
-
-export function getURLFromFilePath(file: string, projectName: string): string {
-    const regexp = new RegExp(`.+(${projectName}.+)`);
-    const match = file.match(regexp);
-    if (!match) throw new Error(`File path ${file} does not contain project name ${projectName}`);
-    return `${baseUrl}/preview/${match[1]}`;
-}
 
 export class Neurosift extends LitElement {
     static get styles(): CSSResult {

src/pyflask/app.py

@@ -71,14 +71,6 @@ def exception_handler(error: Exception) -> Dict[str, str]:
     return {"message": str(error), "type": type(error).__name__}
 
 
-@flask_app.route("/preview/<path:file_path>")
-def send_preview(file_path):
-    """
-    This endpoint is used to send a file in the stub folder by relative file path to the frontend.
-    """
-    return send_from_directory(directory=STUB_SAVE_FOLDER_PATH, path=file_path)
-
-
 @flask_app.route("/files/<int:index>")
 def handle_get_file_request(index) -> Union[str, None]:
     """

src/pyflask/namespaces/neurosift.py

@@ -11,7 +11,6 @@
 
 import flask
 import flask_restx
-from manageNeuroconv.info import STUB_SAVE_FOLDER_PATH
 
 neurosift_namespace = flask_restx.Namespace(
     name="neurosift", description="Handle file system communication with the " "standalone Neurosift preview page."