From f2913153590fc349abe8766cc72663245df3f6da Mon Sep 17 00:00:00 2001
From: Rupenieks <32895755+Rupenieks@users.noreply.github.com>
Date: Wed, 2 Sep 2020 15:19:24 +0200
Subject: [PATCH] :zap: Telegram Trigger node function for checking if webhook
 exists (#915)

* :zap: Trigger checkExists function

* :zap: Fixed checkExists logic to ensure API registered webhook URL matches local
---
 .../nodes-base/nodes/Telegram/TelegramTrigger.node.ts     | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/packages/nodes-base/nodes/Telegram/TelegramTrigger.node.ts b/packages/nodes-base/nodes/Telegram/TelegramTrigger.node.ts
index bc560c0d5e..30b2bc01d4 100644
--- a/packages/nodes-base/nodes/Telegram/TelegramTrigger.node.ts
+++ b/packages/nodes-base/nodes/Telegram/TelegramTrigger.node.ts
@@ -112,6 +112,14 @@ export class TelegramTrigger implements INodeType {
 	webhookMethods = {
 		default: {
 			async checkExists(this: IHookFunctions): Promise<boolean> {
+				const endpoint = 'getWebhookInfo';
+				const webhookReturnData = await apiRequest.call(this, 'POST', endpoint, {});
+				const webhookUrl = this.getNodeWebhookUrl('default');
+
+				if (webhookReturnData.result.url === webhookUrl) {
+					return true;
+				}
+
 				return false;
 			},
 			async create(this: IHookFunctions): Promise<boolean> {