feat(Slack Node): Add block support for message updates

packages/nodes-base/nodes/Slack/V2/MessageDescription.ts

@@ -859,6 +859,72 @@ export const messageFields: INodeProperties[] = [
 		description: 'Timestamp of the message to update',
 		placeholder: '1663233118.856619',
 	},
+	{
+		displayName: 'Message Type',
+		name: 'messageType',
+		type: 'options',
+		displayOptions: {
+			show: {
+				operation: ['update'],
+				resource: ['message'],
+			},
+		},
+		description:
+			'Whether to send a simple text message, or use Slack’s Blocks UI builder for more sophisticated messages that include form fields, sections and more',
+		options: [
+			{
+				name: 'Simple Text Message',
+				value: 'text',
+				description: 'Supports basic Markdown',
+			},
+			{
+				name: 'Blocks',
+				value: 'block',
+				description:
+					"Combine text, buttons, form elements, dividers and more in Slack 's visual builder",
+			},
+			{
+				name: 'Attachments',
+				value: 'attachment',
+			},
+		],
+		default: 'text',
+	},
+	{
+		displayName: 'Blocks',
+		name: 'blocksUi',
+		type: 'string',
+		required: true,
+		displayOptions: {
+			show: {
+				operation: ['update'],
+				resource: ['message'],
+				messageType: ['block'],
+			},
+		},
+		typeOptions: {
+			rows: 3,
+		},
+		description:
+			"Enter the JSON output from Slack's visual Block Kit Builder here. You can then use expressions to add variable content to your blocks. To create blocks, use <a target='_blank' href='https://app.slack.com/block-kit-builder'>Slack's Block Kit Builder</a>",
+		hint: "To create blocks, use <a target='_blank' href='https://app.slack.com/block-kit-builder'>Slack's Block Kit Builder</a>",
+		default: '',
+	},
+	{
+		displayName: 'Notification Text',
+		name: 'text',
+		type: 'string',
+		default: '',
+		displayOptions: {
+			show: {
+				operation: ['update'],
+				resource: ['message'],
+				messageType: ['block'],
+			},
+		},
+		description:
+			'Fallback text to display in slack notifications. Supports <a href="https://api.slack.com/reference/surfaces/formatting">markdown</a> by default - this can be disabled in "Options".',
+	},
 	{
 		displayName: 'Message Text',
 		name: 'text',
@@ -868,6 +934,7 @@ export const messageFields: INodeProperties[] = [
 			show: {
 				resource: ['message'],
 				operation: ['update'],
+				messageType: ['text'],
 			},
 		},
 		description:

packages/nodes-base/nodes/Slack/V2/SlackV2.node.ts

@@ -25,12 +25,7 @@ import { fileFields, fileOperations } from './FileDescription';
 import { reactionFields, reactionOperations } from './ReactionDescription';
 import { userGroupFields, userGroupOperations } from './UserGroupDescription';
 import { userFields, userOperations } from './UserDescription';
-import {
-	slackApiRequest,
-	slackApiRequestAllItems,
-	validateJSON,
-	getMessageContent,
-} from './GenericFunctions';
+import { slackApiRequest, slackApiRequestAllItems, getMessageContent } from './GenericFunctions';
 
 export class SlackV2 implements INodeType {
 	description: INodeTypeDescription;
@@ -779,6 +774,7 @@ export class SlackV2 implements INodeType {
 						if (authentication === 'accessToken' && sendAsUser !== '' && sendAsUser !== undefined) {
 							body.username = sendAsUser;
 						}
+
 						// Add all the other options to the request
 						const otherOptions = this.getNodeParameter('otherOptions', i) as IDataObject;
 						let action = 'postMessage';
@@ -836,27 +832,15 @@ export class SlackV2 implements INodeType {
 							{},
 							{ extractValue: true },
 						) as string;
-						const text = this.getNodeParameter('text', i) as string;
 						const ts = this.getNodeParameter('ts', i)?.toString() as string;
+						const content = getMessageContent.call(this, i, nodeVersion, instanceId);
+
 						const body: IDataObject = {
 							channel,
-							text,
 							ts,
+							...content,
 						};
 
-						const jsonParameters = this.getNodeParameter('jsonParameters', i, false);
-						if (jsonParameters) {
-							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', {
-									itemIndex: i,
-								});
-							}
-							if (blocksJson !== '') {
-								body.blocks = blocksJson;
-							}
-						}
 						// Add all the other options to the request
 						const updateFields = this.getNodeParameter('updateFields', i);
 						Object.assign(body, updateFields);