Preview link fix (#1548)

* Preview link fix

* Preview link refactor

* Deleted empty line

* Redundant unnecessary changes

* Added checker for http/https prefix in link

Co-authored-by: Ilya Borodin <ilya.borodin@botconversa.com.br>

src/Utils/link-preview.ts

@@ -18,7 +18,7 @@ export type URLGenerationOptions = {
 /**
  * Given a piece of text, checks for any URL present, generates link preview for the same and returns it
  * Return undefined if the fetch failed or no URL was found
- * @param text the text containing URL
+ * @param text first matched URL in text
  * @returns the URL info required to generate link preview
  */
 export const getUrlInfo = async(
@@ -27,8 +27,11 @@ export const getUrlInfo = async(
 ): Promise<WAUrlInfo | undefined> => {
 	try {
 		const { getLinkPreview } = await import('link-preview-js')
-
-		const info = await getLinkPreview(text, { timeout: opts.timeoutMs })
+		let previewLink = text
+		if (!text.startsWith('https://') && !text.startsWith('http://')) {
+			previewLink = 'https://' + previewLink
+		}
+		const info = await getLinkPreview(previewLink, { timeout: opts.timeoutMs })
 		if(info && 'title' in info) {
 			const [image] = info.images
 
@@ -38,7 +41,7 @@ export const getUrlInfo = async(
 
 			return {
 				'canonical-url': info.url,
-				'matched-text': info.url,
+				'matched-text': text,
 				title: info.title,
 				description: info.description,
 				jpegThumbnail

src/Utils/messages.ts

@@ -248,9 +248,10 @@ export const generateWAMessageContent = async(
 		const extContent = { text: message.text } as WATextMessage
 
 		let urlInfo = message.linkPreview
-		if(!urlInfo && !!options.getUrlInfo && message.text.match(URL_REGEX)) {
+		const matchedUrls = message.text.match(URL_REGEX)
+		if(!urlInfo && !!options.getUrlInfo && matchedUrls) {
 			try {
-				urlInfo = await options.getUrlInfo(message.text)
+				urlInfo = await options.getUrlInfo(matchedUrls[0])
 			} catch(error) { // ignore if fails
 				options.logger?.warn({ trace: error.stack }, 'url generation failed')
 			}