Show toast on upload error (#2959)

A little toast for when image uploads fail. Solves #2944

![Kapture 2024-02-27 at 09 27
12](https://github.com/tldraw/tldraw/assets/1242537/9e285622-8015-41fa-bc3d-92dccfaa7ba9)

### Change Type

- [x] `patch` — Bug fix


### Release Notes

- Adds a quick toast to show when image uploads fail.

assets/translations/main.json

@@ -107,6 +107,8 @@
 	"action.zoom-to-100": "Zoom to 100%",
 	"action.zoom-to-fit": "Zoom to fit",
 	"action.zoom-to-selection": "Zoom to selection",
+	"assets.files.upload-failed": "Upload failed",
+	"assets.url.failed": "Couldn't load URL preview",
 	"color-style.black": "Black",
 	"color-style.blue": "Blue",
 	"color-style.green": "Green",

packages/tldraw/src/lib/Tldraw.tsx

@@ -33,7 +33,9 @@ import { registerDefaultSideEffects } from './defaultSideEffects'
 import { defaultTools } from './defaultTools'
 import { TldrawUi, TldrawUiProps } from './ui/TldrawUi'
 import { TLUiComponents, useTldrawUiComponents } from './ui/context/components'
+import { useToasts } from './ui/context/toasts'
 import { usePreloadAssets } from './ui/hooks/usePreloadAssets'
+import { useTranslation } from './ui/hooks/useTranslation/useTranslation'
 import { useDefaultEditorAssetsWithOverrides } from './utils/static-assets/assetUrls'
 
 /**@public */
@@ -158,6 +160,8 @@ function InsideOfEditorAndUiContext({
 	onMount,
 }: Partial<TLExternalContentProps & { onMount: TLOnMountHandler }>) {
 	const editor = useEditor()
+	const toasts = useToasts()
+	const msg = useTranslation()
 
 	const onMountEvent = useEvent((editor: Editor) => {
 		const unsubs: (void | (() => void) | undefined)[] = []
@@ -165,12 +169,19 @@ function InsideOfEditorAndUiContext({
 		unsubs.push(...registerDefaultSideEffects(editor))
 
 		// for content handling, first we register the default handlers...
-		registerDefaultExternalContentHandlers(editor, {
+		registerDefaultExternalContentHandlers(
+			editor,
+			{
 				maxImageDimension,
 				maxAssetSize,
 				acceptedImageMimeTypes,
 				acceptedVideoMimeTypes,
-		})
+			},
+			{
+				toasts,
+				msg,
+			}
+		)
 
 		// ...then we run the onMount prop, which may override the above
 		unsubs.push(onMount?.(editor))

packages/tldraw/src/lib/defaultExternalContentHandlers.ts

@@ -19,6 +19,8 @@ import {
 	getHashForString,
 } from '@tldraw/editor'
 import { FONT_FAMILIES, FONT_SIZES, TEXT_PROPS } from './shapes/shared/default-shape-constants'
+import { TLUiToastsContextType } from './ui/context/toasts'
+import { useTranslation } from './ui/hooks/useTranslation/useTranslation'
 import { containBoxSize, downsizeImage, isGifAnimated } from './utils/assets/assets'
 import { getEmbedInfo } from './utils/embeds/embeds'
 import { cleanupText, isRightToLeftLanguage, truncateStringWithEllipsis } from './utils/text/text'
@@ -42,7 +44,8 @@ export function registerDefaultExternalContentHandlers(
 		maxAssetSize,
 		acceptedImageMimeTypes,
 		acceptedVideoMimeTypes,
-	}: TLExternalContentProps
+	}: TLExternalContentProps,
+	{ toasts, msg }: { toasts: TLUiToastsContextType; msg: ReturnType<typeof useTranslation> }
 ) {
 	// files -> asset
 	editor.registerExternalAssetHandler('file', async ({ file: _file }) => {
@@ -122,6 +125,9 @@ export function registerDefaultExternalContentHandlers(
 			}
 		} catch (error) {
 			console.error(error)
+			toasts.addToast({
+				title: msg('assets.url.failed'),
+			})
 			meta = { image: '', title: truncateStringWithEllipsis(url, 32), description: '' }
 		}
 
@@ -241,6 +247,9 @@ export function registerDefaultExternalContentHandlers(
 
 					assets[i] = asset
 				} catch (error) {
+					toasts.addToast({
+						title: msg('assets.files.upload-failed'),
+					})
 					console.error(error)
 					return null
 				}
@@ -352,9 +361,16 @@ export function registerDefaultExternalContentHandlers(
 		let shouldAlsoCreateAsset = false
 		if (!asset) {
 			shouldAlsoCreateAsset = true
+			try {
 				const bookmarkAsset = await editor.getAssetForExternalContent({ type: 'url', url })
 				if (!bookmarkAsset) throw Error('Could not create an asset')
 				asset = bookmarkAsset
+			} catch (e) {
+				toasts.addToast({
+					title: msg('assets.url.failed'),
+				})
+				return
+			}
 		}
 
 		editor.batch(() => {

packages/tldraw/src/lib/ui/hooks/useTranslation/TLUiTranslationKey.ts

@@ -111,6 +111,8 @@ export type TLUiTranslationKey =
 	| 'action.zoom-to-100'
 	| 'action.zoom-to-fit'
 	| 'action.zoom-to-selection'
+	| 'assets.files.upload-failed'
+	| 'assets.url.failed'
 	| 'color-style.black'
 	| 'color-style.blue'
 	| 'color-style.green'

packages/tldraw/src/lib/ui/hooks/useTranslation/defaultTranslation.ts

@@ -111,6 +111,8 @@ export const DEFAULT_TRANSLATION = {
 	'action.zoom-to-100': 'Zoom to 100%',
 	'action.zoom-to-fit': 'Zoom to fit',
 	'action.zoom-to-selection': 'Zoom to selection',
+	'assets.files.upload-failed': 'Upload failed',
+	'assets.url.failed': "Couldn't load URL preview",
 	'color-style.black': 'Black',
 	'color-style.blue': 'Blue',
 	'color-style.green': 'Green',