From 81ee1fdfb63a216356b85ff80b5171a1bd4fc20f Mon Sep 17 00:00:00 2001
From: Michael Quinlan <mquinlan@gigsmart.com>
Date: Tue, 7 Sep 2021 18:16:31 -0600
Subject: [PATCH] Adding blocks to slack message update

---
 .../nodes/Slack/MessageDescription.ts         | 23 ++++++++++++++++++-
 packages/nodes-base/nodes/Slack/Slack.node.ts |  7 ++++++
 2 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/packages/nodes-base/nodes/Slack/MessageDescription.ts b/packages/nodes-base/nodes/Slack/MessageDescription.ts
index 6174f81dc9c5d..f8a1692adffc5 100644
--- a/packages/nodes-base/nodes/Slack/MessageDescription.ts
+++ b/packages/nodes-base/nodes/Slack/MessageDescription.ts
@@ -487,7 +487,7 @@ export const messageFields = [
 		displayName: 'Text',
 		name: 'text',
 		type: 'string',
-		required: true,
+		required: false,
 		default: '',
 		displayOptions: {
 			show: {
@@ -566,6 +566,27 @@ export const messageFields = [
 			},
 		],
 	},
+	{
+		displayName: 'Blocks',
+		name: 'blocksJson',
+		type: 'json',
+		default: '',
+		required: false,
+		typeOptions: {
+			alwaysOpenEditWindow: true,
+		},
+		displayOptions: {
+			show: {
+				resource: [
+					'message',
+				],
+				operation: [
+					'update',
+				]
+			},
+		},
+		description: 'The blocks to add',
+	},
 	{
 		displayName: 'Blocks',
 		name: 'blocksUi',
diff --git a/packages/nodes-base/nodes/Slack/Slack.node.ts b/packages/nodes-base/nodes/Slack/Slack.node.ts
index cd506473d194f..57a06b26639b6 100644
--- a/packages/nodes-base/nodes/Slack/Slack.node.ts
+++ b/packages/nodes-base/nodes/Slack/Slack.node.ts
@@ -843,7 +843,14 @@ export class Slack implements INodeType {
 							}
 						}
 						body['attachments'] = attachments;
+						const blocksJson = this.getNodeParameter('blocksJson', i, []) as string;
 
+						if (blocksJson !== '' && validateJSON(blocksJson) === undefined) {
+							throw new NodeOperationError(this.getNode(), 'Blocks it is not a valid json');
+						}
+						if (blocksJson !== '') {
+							body.blocks = blocksJson;
+						}
 						// Add all the other options to the request
 						const updateFields = this.getNodeParameter('updateFields', i) as IDataObject;
 						Object.assign(body, updateFields);