better filename

Author: Lenni009

src/main.ts

@@ -14,14 +14,14 @@ if (input) input.onchange = async (e: Event) => {
 	const file = element.files[0];
 	const compressedFile = await compressFile(file);
 	const dataURI = await getBase64Image(compressedFile);
-	const fullName = file.name;
-	const fullNameArray = fullName.split('.');
-	const extension = fullNameArray.pop();
-	const fileName = fullNameArray.join('.');
+	const fileName = file.name.split('.').slice(0, -1).join('.');
+	const isCompressed = compressedFile.size !== file.size;
+	const newFileName = isCompressed ? fileName + '-min' : fileName;
+	const fileExtension = isCompressed ? 'jpg' : file.name.split('.').at(-1);
 	downloadElement.href = dataURI;
 	statusElement.style.display = 'none';
 	downloadElement.style.display = '';
-	downloadElement.download = `${fileName}-min.${extension}`;
+	downloadElement.download = newFileName + '.' + fileExtension;
 }
 
 let quality = 1;
@@ -45,7 +45,7 @@ async function compressFile(file: File): Promise<Blob> {
 function blobToBase64(blob: Blob): Promise<string> {
 	return new Promise(resolve => {
 		const reader = new FileReader();
-		reader.onload = function () {
+		reader.onload = () => {
 			const dataUrl = reader.result;
 			if (typeof dataUrl === 'string') resolve(dataUrl);
 		};