Reset EpubHandler after file upload

A change has been made to the file upload event handler function. After a successful file upload and processing, the EpubHandler, which is responsible for handling EPUB files, is now reset. This small addition creates a fresh instance of EpubHandler for each file upload, ensuring the state from the previous file processing does not persist. This is crucial for the correct handling of consecutive file uploads. In essence, this improves the reliability and accuracy of the file processing feature.

Author: 0xMax42

src/App.ts

@@ -48,33 +48,35 @@ export default class App {
         }
     }
 
-/**
- * Handles the file upload event.
- * @param event - The file upload event.
- */
-private async handleFileUpload(event: Event): Promise<void> {
-    const input = event.target as HTMLInputElement;
-    if (input.files && input.files.length > 0) {
-        const file = input.files[0];
-        this.hideFileInput();
-        this.showLoadingSpinner();
-
-        const startTime = performance.now(); // Start time measurement
-        await this.processFile(file);
-        const endTime = performance.now(); // End time measurement
-
-        this.hideLoadingSpinner();
-        this.showSuccessMessage(this.showFileInput.bind(this));
-        input.value = ''; // Clear the input field
-
-        const processingTime = (endTime - startTime) / 1000;
-        const seconds = Math.floor(processingTime);
-        const milliseconds = Math.floor((processingTime - seconds) * 1000);
-
-        console.info(`File processing time: ${seconds} seconds and ${milliseconds} milliseconds`);
+    /**
+     * Handles the file upload event.
+     * @param event - The file upload event.
+     */
+    private async handleFileUpload(event: Event): Promise<void> {
+        const input = event.target as HTMLInputElement;
+        if (input.files && input.files.length > 0) {
+            const file = input.files[0];
+            this.hideFileInput();
+            this.showLoadingSpinner();
+
+            const startTime = performance.now(); // Start time measurement
+            await this.processFile(file);
+            const endTime = performance.now(); // End time measurement
+
+            this.hideLoadingSpinner();
+            this.showSuccessMessage(this.showFileInput.bind(this));
+            input.value = ''; // Clear the input field
+            this._epubHandler = new EpubHandler(); // Reset the EPUB handler
+
+            const processingTime = (endTime - startTime) / 1000;
+            const seconds = Math.floor(processingTime);
+            const milliseconds = Math.floor((processingTime - seconds) * 1000);
+
+            console.info(
+                `File processing time: ${seconds} seconds and ${milliseconds} milliseconds`
+            );
+        }
     }
-}
-
 
     /**
      * Processes the uploaded file.