✨ Add matrix integration (#1046)

* Added Matrix integration node

* fix: Improve code quality and add new operation

- Changed operation names to match casing (all camelCase)
- Ordering operation names to be alphabetical
- Creating a read all operation to fetch all messages from a room
- Added node subtitle

* fix: add element index so that expressions work on multiple items

* feature: added possibility to upload and send media to Matrix

- Also replacing Promises.all() + Array.map() For a regular for as it messes up ordering

* refactor: merging upload + send Media in a single action

* refactor: improved code quality and endpoints

- Removed sync entirely as a better way to retrieve messages is now
implemeented
- Added rooms dropdown to operations
- Added option to paginate or retrieve all room messages
- Removed option to upload media from text contents. Only files are
accepted now
- Room members has bem moved from the Rooms resource to a standalone
with Get All operation

* ⚡ Small improvements

* ⚡ Added filters to get messages

* ⚡ Minor improvements to Matrix-Integration

Co-authored-by: Omar Ajoue <krynble@gmail.com>
Co-authored-by: ricardo <ricardoespinoza105@gmail.com>

packages/nodes-base/nodes/Matrix/MessageDescription.ts

@@ -0,0 +1,180 @@
+import {
+	INodeProperties,
+} from 'n8n-workflow';
+
+export const messageOperations = [
+	{
+		displayName: 'Operation',
+		name: 'operation',
+		type: 'options',
+		displayOptions: {
+			show: {
+				resource: [
+					'message',
+				],
+			},
+		},
+		options: [
+			{
+				name: 'Create',
+				value: 'create',
+				description: 'Send a message to a room',
+			},
+			{
+				name: 'Get All',
+				value: 'getAll',
+				description: 'Gets all messages from a room',
+			},
+		],
+		default: 'create',
+		description: 'The operation to perform.',
+	},
+] as INodeProperties[];
+
+export const messageFields = [
+
+	/* -------------------------------------------------------------------------- */
+	/*                              message:create                                */
+	/* -------------------------------------------------------------------------- */
+	{
+		displayName: 'Room ID',
+		name: 'roomId',
+		type: 'options',
+		typeOptions: {
+			loadOptionsMethod: 'getChannels',
+		},
+		default: '',
+		placeholder: '!123abc:matrix.org',
+		displayOptions: {
+			show: {
+				operation: [
+					'create',
+				],
+				resource: [
+					'message',
+				],
+			},
+		},
+		required: true,
+		description: 'The channel to send the message to.',
+	},
+	{
+		displayName: 'Text',
+		name: 'text',
+		type: 'string',
+		typeOptions: {
+			alwaysOpenEditWindow: true,
+		},
+		default: '',
+		placeholder: 'Hello from n8n!',
+		displayOptions: {
+			show: {
+				operation: [
+					'create',
+				],
+				resource: [
+					'message',
+				],
+			},
+		},
+		description: 'The text to send.',
+	},
+
+
+	/* ----------------------------------------------------------------------- */
+	/*                                message:getAll                          */
+	/* ----------------------------------------------------------------------- */
+	{
+		displayName: 'Room ID',
+		name: 'roomId',
+		type: 'options',
+		default: '',
+		typeOptions: {
+			loadOptionsMethod: 'getChannels',
+		},
+		displayOptions: {
+			show: {
+				resource: [
+					'message',
+				],
+				operation: [
+					'getAll',
+				],
+			},
+		},
+		description: 'The token to start returning events from. This token can be obtained from a prev_batch token returned for each room by the sync API',
+		required: true,
+	},
+	{
+		displayName: 'Return All',
+		name: 'returnAll',
+		type: 'boolean',
+		default: false,
+		displayOptions: {
+			show: {
+				resource: [
+					'message',
+				],
+				operation: [
+					'getAll',
+				],
+			},
+		},
+		description: 'If all results should be returned or only up to a given limit.',
+		required: true,
+	},
+	{
+		displayName: 'Limit',
+		name: 'limit',
+		type: 'number',
+		displayOptions: {
+			show: {
+				resource: [
+					'message',
+				],
+				operation: [
+					'getAll',
+				],
+				returnAll: [
+					false,
+				],
+			},
+		},
+		typeOptions: {
+			minValue: 1,
+			maxValue: 500,
+		},
+		default: 100,
+		description: 'How many results to return.',
+	},
+	{
+		displayName: 'Other Options',
+		name: 'otherOptions',
+		type: 'collection',
+		displayOptions: {
+			show: {
+				resource: [
+					'message',
+				],
+				operation: [
+					'getAll',
+				],
+			},
+		},
+		default: {},
+		description: 'Other options',
+		placeholder: 'Add options',
+		options: [
+			{
+				displayName: 'Filter',
+				name: 'filter',
+				type: 'string',
+				default: '',
+				description: 'A JSON RoomEventFilter to filter returned events with. More information can be found on this <a href="https://matrix.org/docs/spec/client_server/r0.6.0" target="_blank">page</a>.',
+				placeholder: '{"contains_url":true,"types":["m.room.message", "m.sticker"]}',
+			},
+		],
+	},
+
+
+] as INodeProperties[];