fix: Only allow image uploads

src/lib/components/forms/updatePFP.svelte

@@ -10,7 +10,7 @@
 
   const { data }: { data: PageData } = $props();
   let src = $state(data.user.image ?? `https://api.dicebear.com/9.x/identicon/svg?seed=${data.session?.user.id}`);
-  let open: boolean = $state(false);
+  let error: string | null = $state(null);
 
   async function submit(file: File) {
     await generateStream(file).then((res) => {
@@ -23,6 +23,7 @@
   <fieldset class="flex size-full flex-col items-center justify-center gap-3 rounded-lg border p-4">
     <legend class="-ml-1 px-1 text-sm font-medium"> Upload Profile Image </legend>
     <ImageCropper.Root
+      bind:error
       bind:src
       onCropped={async (url) => {
         const file = await getFileFromUrl(url);
@@ -45,5 +46,6 @@
         </ImageCropper.Controls>
       </ImageCropper.Dialog>
     </ImageCropper.Root>
+    {#if error}<span class="text-sm text-red-500">{error}</span>{/if}
   </fieldset>
 </form>

src/lib/components/ui/image-cropper/image-cropper-crop.svelte

@@ -15,7 +15,7 @@
   const cropState = useImageCropperCrop();
 </script>
 
-<Button {...rest} {size} {variant} onclick={cropState.onclick}>
+<Button {...rest} {size} {variant} onclick={cropState.onclick} data-testid="crop">
   <ImageUp />
   <span>Upload</span>
 </Button>

src/lib/components/ui/image-cropper/image-cropper.svelte

@@ -11,7 +11,14 @@
   import { onDestroy } from 'svelte';
   import { useId } from 'bits-ui';
 
-  let { id = useId(), src = $bindable(''), onCropped = () => {}, children, ...rest }: ImageCropperRootProps = $props();
+  let {
+    id = useId(),
+    src = $bindable(''),
+    onCropped = () => {},
+    children,
+    error = $bindable(null),
+    ...rest
+  }: ImageCropperRootProps & { error?: string | null } = $props();
 
   const rootState = useImageCropperRoot({
     id: box.with(() => id),
@@ -31,6 +38,12 @@
   onchange={(e) => {
     const file = e.currentTarget.files?.[0];
     if (!file) return;
+    // Prevent the user from uploading non-image files
+    if (file.type.split('/')[0] !== 'image') {
+      error = 'Please upload a valid image.';
+      return;
+    }
+    error = null;
     rootState.onUpload(file);
     // reset so that we can reupload the same file
     (e.target! as HTMLInputElement).value = '';

src/lib/components/ui/image-cropper/image-cropper.svelte.ts

@@ -45,11 +45,8 @@ class ImageCropperRootState {
 
   async onCrop() {
     if (!this.pixelCrop || !this.tempUrl) return;
-
     this.opts.src.current = await getCroppedImg(this.tempUrl, this.pixelCrop);
-
     this.open = false;
-
     this.opts.onCropped(this.opts.src.current);
   }