feat: generate high quality thumbs on link preview

src/Utils/link-preview.ts

@@ -1,5 +1,6 @@
 import { Logger } from 'pino'
-import { WAUrlInfo } from '../Types'
+import { WAMediaUploadFunction, WAUrlInfo } from '../Types'
+import { prepareWAMessageMedia } from './messages'
 import { extractImageThumb, getHttpStream } from './messages-media'
 
 const THUMBNAIL_WIDTH_PX = 192
@@ -14,6 +15,7 @@ const getCompressedJpegThumbnail = async(url: string, { thumbnailWidth, timeoutM
 export type URLGenerationOptions = {
 	thumbnailWidth: number
 	timeoutMs: number
+	uploadImage?: WAMediaUploadFunction
 }
 
 /**
@@ -38,25 +40,37 @@ export const getUrlInfo = async(
 		if(info && 'title' in info) {
 			const [image] = info.images
 
-			let jpegThumbnail: Buffer | undefined = undefined
-			try {
-				jpegThumbnail = image
-					? (await getCompressedJpegThumbnail(image, opts)).buffer
-					: undefined
-			} catch(error) {
-				logger?.debug(
-					{ err: error.stack, url: previewLink },
-					'error in generating thumbnail'
-				)
-			}
-
-			return {
+			const urlInfo: WAUrlInfo = {
 				'canonical-url': info.url,
 				'matched-text': text,
 				title: info.title,
 				description: info.description,
-				jpegThumbnail
 			}
+
+			if(opts.uploadImage) {
+				const { imageMessage } = await prepareWAMessageMedia(
+					{ image: { url: image } },
+					{ upload: opts.uploadImage, mediaTypeOverride: 'thumbnail-link' }
+				)
+				urlInfo.jpegThumbnail = imageMessage?.jpegThumbnail
+					? Buffer.from(imageMessage.jpegThumbnail)
+					: undefined
+				urlInfo.highQualityThumbnail = imageMessage || undefined
+				console.log(urlInfo)
+			} else {
+				try {
+					urlInfo.jpegThumbnail = image
+						? (await getCompressedJpegThumbnail(image, opts)).buffer
+						: undefined
+				} catch(error) {
+					logger?.debug(
+						{ err: error.stack, url: previewLink },
+						'error in generating thumbnail'
+					)
+				}
+			}
+
+			return urlInfo
 		}
 	} catch(error) {
 		if(!error.message.includes('receive a valid')) {