From 5b75aebf1d3deaccc581cc2b53f7c9022db1182b Mon Sep 17 00:00:00 2001
From: anton-nagornyi <anton.nagornyi@gmail.com>
Date: Sun, 14 Apr 2024 12:18:44 +0300
Subject: [PATCH] fix: prevent from encoding already encoded url links (#8)

---
 lib/telegramify.js    | 3 ++-
 tests/convert.spec.js | 6 ++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/lib/telegramify.js b/lib/telegramify.js
index 321e029..0f42778 100644
--- a/lib/telegramify.js
+++ b/lib/telegramify.js
@@ -70,7 +70,8 @@ const createHandlers = (definitions, unsupportedTagsStrategy) => ({
 	link: (node, _parent, context) => {
 		const exit = context.enter('link');
 		const text = phrasing(node, context, {before: '|', after: '>'}) || escapeSymbols(node.title);
-		const url = encodeURI(node.url);
+		const isUrlEncoded = decodeURI(node.url) !== node.url;
+		const url = isUrlEncoded ? node.url : encodeURI(node.url);
 		exit();
 
 		if (!isURL(url)) return escapeSymbols(text) || escapeSymbols(url);
diff --git a/tests/convert.spec.js b/tests/convert.spec.js
index 6730b69..fc5a5e0 100644
--- a/tests/convert.spec.js
+++ b/tests/convert.spec.js
@@ -89,6 +89,12 @@ describe('Test convert method', () => {
 		expect(convert(markdown)).toBe(tgMarkdown);
 	});
 
+	it('Link with invalid URL', () => {
+		const markdown = '[test](/atlassian)';
+		const tgMarkdown = 'test\n';
+		expect(convert(markdown)).toBe(tgMarkdown);
+	});
+
 	it('Link with parentheses', () => {
 		const markdown = '[Atlassian](http://atlas()sian.com)';
 		const tgMarkdown = '[Atlassian](http://atlas\\(\\)sian.com)\n';