first commit

packages/nodes-base/nodes/Mattermost/Mattermost.node.json

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+{
+	"node": "n8n-nodes-base.mattermost",
+	"nodeVersion": "1.0",
+	"codexVersion": "1.0",
+	"categories": ["Communication"],
+	"resources": {
+		"credentialDocumentation": [
+			{
+				"url": "https://docs.n8n.io/integrations/builtin/credentials/mattermost/"
+			}
+		],
+		"primaryDocumentation": [
+			{
+				"url": "https://docs.n8n.io/integrations/builtin/app-nodes/n8n-nodes-base.mattermost/"
+			}
+		],
+		"generic": [
+			{
+				"label": "How to host virtual coffee breaks with n8n",
+				"icon": "☕️",
+				"url": "https://n8n.io/blog/how-to-host-virtual-coffee-breaks-with-n8n/"
+			},
+			{
+				"label": "Supercharging your conference registration process with n8n",
+				"icon": "🎫",
+				"url": "https://n8n.io/blog/supercharging-your-conference-registration-process-with-n8n/"
+			},
+			{
+				"label": "Creating triggers for n8n workflows using polling",
+				"icon": "⏲",
+				"url": "https://n8n.io/blog/creating-triggers-for-n8n-workflows-using-polling/"
+			},
+			{
+				"label": "5 tasks you can automate with the new Notion API ",
+				"icon": "⚡️",
+				"url": "https://n8n.io/blog/5-tasks-you-can-automate-with-notion-api/"
+			},
+			{
+				"label": "15 Google apps you can combine and automate to increase productivity",
+				"icon": "💡",
+				"url": "https://n8n.io/blog/automate-google-apps-for-productivity/"
+			},
+			{
+				"label": "The ultimate guide to automate your video collaboration with Whereby, Mattermost, and n8n",
+				"icon": "📹",
+				"url": "https://n8n.io/blog/the-ultimate-guide-to-automate-your-video-collaboration-with-whereby-mattermost-and-n8n/"
+			},
+			{
+				"label": "5 workflow automations for Mattermost that we love at n8n",
+				"icon": "🤖",
+				"url": "https://n8n.io/blog/5-workflow-automations-for-mattermost-that-we-love-at-n8n/"
+			},
+			{
+				"label": "Creating Error Workflows in n8n",
+				"icon": "🌪",
+				"url": "https://n8n.io/blog/creating-error-workflows-in-n8n/"
+			},
+			{
+				"label": "How to automate every step of an incident response workflow",
+				"url": "https://n8n.io/blog/creating-custom-incident-response-workflows-with-n8n/"
+			},
+			{
+				"label": "Learn how to use webhooks with Mattermost slash commands",
+				"icon": "🦄",
+				"url": "https://n8n.io/blog/learn-how-to-use-webhooks-with-mattermost-slash-commands/"
+			},
+			{
+				"label": "7 no-code workflow automations for Amazon Web Services",
+				"url": "https://n8n.io/blog/aws-workflow-automation/"
+			}
+		]
+	}
+}

packages/nodes-base/nodes/Mattermost/Mattermost.node.ts

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+import type { INodeTypeBaseDescription, IVersionedNodeType } from 'n8n-workflow';
+import { VersionedNodeType } from 'n8n-workflow';
+
+import { MattermostV1 } from './v1/MattermostV1.node';
+
+export class Mattermost extends VersionedNodeType {
+	constructor() {
+		const baseDescription: INodeTypeBaseDescription = {
+			displayName: 'Mattermost',
+			name: 'mattermost',
+			icon: 'file:mattermost.svg',
+			group: ['output'],
+			subtitle: '={{$parameter["operation"] + ": " + $parameter["resource"]}}',
+			description: 'Sends data to Mattermost',
+			defaultVersion: 1,
+		};
+
+		const nodeVersions: IVersionedNodeType['nodeVersions'] = {
+			1: new MattermostV1(baseDescription),
+		};
+
+		super(nodeVersions, baseDescription);
+	}
+}

packages/nodes-base/nodes/Mattermost/__schema__/v1.0.0/message/post.json

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+{
+    "type": "object",
+    "properties": {
+        "channel_id": {
+            "type": "string"
+        },
+        "create_at": {
+            "type": "integer"
+        },
+        "delete_at": {
+            "type": "integer"
+        },
+        "edit_at": {
+            "type": "integer"
+        },
+        "hashtags": {
+            "type": "string"
+        },
+        "id": {
+            "type": "string"
+        },
+        "is_pinned": {
+            "type": "boolean"
+        },
+        "last_reply_at": {
+            "type": "integer"
+        },
+        "message": {
+            "type": "string"
+        },
+        "metadata": {
+            "type": "object",
+            "properties": {
+                "embeds": {
+                    "type": "array",
+                    "items": {
+                        "type": "object",
+                        "properties": {
+                            "type": {
+                                "type": "string"
+                            }
+                        }
+                    }
+                }
+            }
+        },
+        "original_id": {
+            "type": "string"
+        },
+        "participants": {
+            "type": "null"
+        },
+        "pending_post_id": {
+            "type": "string"
+        },
+        "props": {
+            "type": "object",
+            "properties": {
+                "from_bot": {
+                    "type": "string"
+                }
+            }
+        },
+        "remote_id": {
+            "type": "string"
+        },
+        "reply_count": {
+            "type": "integer"
+        },
+        "root_id": {
+            "type": "string"
+        },
+        "type": {
+            "type": "string"
+        },
+        "update_at": {
+            "type": "integer"
+        },
+        "user_id": {
+            "type": "string"
+        }
+    },
+    "version": 1
+}

packages/nodes-base/nodes/Mattermost/v1/MattermostV1.node.ts

@@ -0,0 +1,28 @@
+import type {
+	IExecuteFunctions,
+	INodeType,
+	INodeTypeBaseDescription,
+	INodeTypeDescription,
+} from 'n8n-workflow';
+
+import { router } from './actions/router';
+import { versionDescription } from './actions/versionDescription';
+import { loadOptions } from './methods';
+
+export class MattermostV1 implements INodeType {
+	description: INodeTypeDescription;
+
+	constructor(baseDescription: INodeTypeBaseDescription) {
+		this.description = {
+			...baseDescription,
+			...versionDescription,
+			usableAsTool: true,
+		};
+	}
+
+	methods = { loadOptions };
+
+	async execute(this: IExecuteFunctions) {
+		return await router.call(this);
+	}
+}

packages/nodes-base/nodes/Mattermost/v1/actions/Interfaces.ts

@@ -0,0 +1,29 @@
+import type { AllEntities, Entity, PropertiesOf } from 'n8n-workflow';
+
+type MattermostMap = {
+	channel: 'addUser' | 'create' | 'delete' | 'members' | 'restore' | 'statistics' | 'search';
+	message: 'delete' | 'post' | 'postEphemeral';
+	reaction: 'create' | 'delete' | 'getAll';
+	user: 'create' | 'deactive' | 'getAll' | 'getByEmail' | 'getById' | 'invite';
+};
+
+export type Mattermost = AllEntities<MattermostMap>;
+
+export type MattermostChannel = Entity<MattermostMap, 'channel'>;
+export type MattermostMessage = Entity<MattermostMap, 'message'>;
+export type MattermostReaction = Entity<MattermostMap, 'reaction'>;
+export type MattermostUser = Entity<MattermostMap, 'user'>;
+
+export type ChannelProperties = PropertiesOf<MattermostChannel>;
+export type MessageProperties = PropertiesOf<MattermostMessage>;
+export type ReactionProperties = PropertiesOf<MattermostReaction>;
+export type UserProperties = PropertiesOf<MattermostUser>;
+
+export interface IAttachment {
+	fields: {
+		item?: object[];
+	};
+	actions: {
+		item?: object[];
+	};
+}

packages/nodes-base/nodes/Mattermost/v1/actions/channel/addUser/description.ts

@@ -0,0 +1,42 @@
+import type { ChannelProperties } from '../../Interfaces';
+
+export const channelAddUserDescription: ChannelProperties = [
+	{
+		displayName: 'Channel Name or ID',
+		name: 'channelId',
+		type: 'options',
+		typeOptions: {
+			loadOptionsMethod: 'getChannels',
+		},
+		options: [],
+		default: '',
+		required: true,
+		displayOptions: {
+			show: {
+				operation: ['addUser'],
+				resource: ['channel'],
+			},
+		},
+		description:
+			'The ID of the channel to invite user to. Choose from the list, or specify an ID using an <a href="https://docs.n8n.io/code/expressions/">expression</a>.',
+	},
+	{
+		displayName: 'User Name or ID',
+		name: 'userId',
+		type: 'options',
+		typeOptions: {
+			loadOptionsMethod: 'getUsers',
+		},
+		options: [],
+		default: '',
+		required: true,
+		displayOptions: {
+			show: {
+				operation: ['addUser'],
+				resource: ['channel'],
+			},
+		},
+		description:
+			'The ID of the user to invite into channel. Choose from the list, or specify an ID using an <a href="https://docs.n8n.io/code/expressions/">expression</a>.',
+	},
+];

packages/nodes-base/nodes/Mattermost/v1/actions/channel/addUser/execute.ts

@@ -0,0 +1,21 @@
+import type { IExecuteFunctions, IDataObject, INodeExecutionData } from 'n8n-workflow';
+
+import { apiRequest } from '../../../transport';
+
+export async function addUser(
+	this: IExecuteFunctions,
+	index: number,
+): Promise<INodeExecutionData[]> {
+	const channelId = this.getNodeParameter('channelId', index) as string;
+
+	const body = {} as IDataObject;
+	const qs = {} as IDataObject;
+	const requestMethod = 'POST';
+	const endpoint = `channels/${channelId}/members`;
+
+	body.user_id = this.getNodeParameter('userId', index) as string;
+
+	const responseData = await apiRequest.call(this, requestMethod, endpoint, body, qs);
+
+	return this.helpers.returnJsonArray(responseData as IDataObject[]);
+}

packages/nodes-base/nodes/Mattermost/v1/actions/channel/addUser/index.ts

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+import { channelAddUserDescription as description } from './description';
+import { addUser as execute } from './execute';
+
+export { description, execute };

packages/nodes-base/nodes/Mattermost/v1/actions/channel/create/description.ts

@@ -0,0 +1,76 @@
+import type { ChannelProperties } from '../../Interfaces';
+
+export const channelCreateDescription: ChannelProperties = [
+	{
+		displayName: 'Team Name or ID',
+		name: 'teamId',
+		type: 'options',
+		typeOptions: {
+			loadOptionsMethod: 'getTeams',
+		},
+		options: [],
+		default: '',
+		required: true,
+		displayOptions: {
+			show: {
+				operation: ['create'],
+				resource: ['channel'],
+			},
+		},
+		description:
+			'The Mattermost Team. Choose from the list, or specify an ID using an <a href="https://docs.n8n.io/code/expressions/">expression</a>.',
+	},
+	{
+		displayName: 'Display Name',
+		name: 'displayName',
+		type: 'string',
+		default: '',
+		placeholder: 'Announcements',
+		displayOptions: {
+			show: {
+				operation: ['create'],
+				resource: ['channel'],
+			},
+		},
+		required: true,
+		description: 'The non-unique UI name for the channel',
+	},
+	{
+		displayName: 'Name',
+		name: 'channel',
+		type: 'string',
+		default: '',
+		placeholder: 'announcements',
+		displayOptions: {
+			show: {
+				operation: ['create'],
+				resource: ['channel'],
+			},
+		},
+		required: true,
+		description: 'The unique handle for the channel, will be present in the channel URL',
+	},
+	{
+		displayName: 'Type',
+		name: 'type',
+		type: 'options',
+		displayOptions: {
+			show: {
+				operation: ['create'],
+				resource: ['channel'],
+			},
+		},
+		options: [
+			{
+				name: 'Private',
+				value: 'private',
+			},
+			{
+				name: 'Public',
+				value: 'public',
+			},
+		],
+		default: 'public',
+		description: 'The type of channel to create',
+	},
+];

packages/nodes-base/nodes/Mattermost/v1/actions/channel/create/execute.ts

@@ -0,0 +1,24 @@
+import type { IExecuteFunctions, IDataObject, INodeExecutionData } from 'n8n-workflow';
+
+import { apiRequest } from '../../../transport';
+
+export async function create(
+	this: IExecuteFunctions,
+	index: number,
+): Promise<INodeExecutionData[]> {
+	const body = {} as IDataObject;
+	const qs = {} as IDataObject;
+	const requestMethod = 'POST';
+	const endpoint = 'channels';
+
+	const type = this.getNodeParameter('type', index) as string;
+
+	body.team_id = this.getNodeParameter('teamId', index) as string;
+	body.display_name = this.getNodeParameter('displayName', index) as string;
+	body.name = this.getNodeParameter('channel', index) as string;
+	body.type = type === 'public' ? 'O' : 'P';
+
+	const responseData = await apiRequest.call(this, requestMethod, endpoint, body, qs);
+
+	return this.helpers.returnJsonArray(responseData as IDataObject[]);
+}

packages/nodes-base/nodes/Mattermost/v1/actions/channel/create/index.ts

@@ -0,0 +1,4 @@
+import { channelCreateDescription as description } from './description';
+import { create as execute } from './execute';
+
+export { description, execute };

packages/nodes-base/nodes/Mattermost/v1/actions/channel/del/description.ts

@@ -0,0 +1,23 @@
+import type { ChannelProperties } from '../../Interfaces';
+
+export const channelDeleteDescription: ChannelProperties = [
+	{
+		displayName: 'Channel Name or ID',
+		name: 'channelId',
+		type: 'options',
+		typeOptions: {
+			loadOptionsMethod: 'getChannels',
+		},
+		options: [],
+		default: '',
+		required: true,
+		displayOptions: {
+			show: {
+				operation: ['delete'],
+				resource: ['channel'],
+			},
+		},
+		description:
+			'The ID of the channel to soft delete. Choose from the list, or specify an ID using an <a href="https://docs.n8n.io/code/expressions/">expression</a>.',
+	},
+];

packages/nodes-base/nodes/Mattermost/v1/actions/channel/del/execute.ts

@@ -0,0 +1,16 @@
+import type { IExecuteFunctions, IDataObject, INodeExecutionData } from 'n8n-workflow';
+
+import { apiRequest } from '../../../transport';
+
+export async function del(this: IExecuteFunctions, index: number): Promise<INodeExecutionData[]> {
+	const channelId = this.getNodeParameter('channelId', index) as string;
+
+	const body = {} as IDataObject;
+	const qs = {} as IDataObject;
+	const requestMethod = 'DELETE';
+	const endpoint = `channels/${channelId}`;
+
+	const responseData = await apiRequest.call(this, requestMethod, endpoint, body, qs);
+
+	return this.helpers.returnJsonArray(responseData as IDataObject[]);
+}

packages/nodes-base/nodes/Mattermost/v1/actions/channel/del/index.ts

@@ -0,0 +1,4 @@
+import { channelDeleteDescription as description } from './description';
+import { del as execute } from './execute';
+
+export { description, execute };

packages/nodes-base/nodes/Mattermost/v1/actions/channel/index.ts

@@ -0,0 +1,77 @@
+import type { INodeProperties } from 'n8n-workflow';
+
+import * as addUser from './addUser';
+import * as create from './create';
+import * as del from './del';
+import * as members from './members';
+import * as restore from './restore';
+import * as search from './search';
+import * as statistics from './statistics';
+
+export { create, del as delete, members, restore, addUser, statistics, search };
+
+export const descriptions: INodeProperties[] = [
+	{
+		displayName: 'Operation',
+		name: 'operation',
+		type: 'options',
+		noDataExpression: true,
+		displayOptions: {
+			show: {
+				resource: ['channel'],
+			},
+		},
+		options: [
+			{
+				name: 'Add User',
+				value: 'addUser',
+				description: 'Add a user to a channel',
+				action: 'Add a user to a channel',
+			},
+			{
+				name: 'Create',
+				value: 'create',
+				description: 'Create a new channel',
+				action: 'Create a channel',
+			},
+			{
+				name: 'Delete',
+				value: 'delete',
+				description: 'Soft delete a channel',
+				action: 'Delete a channel',
+			},
+			{
+				name: 'Member',
+				value: 'members',
+				description: 'Get a page of members for a channel',
+				action: 'Get a page of members for a channel',
+			},
+			{
+				name: 'Restore',
+				value: 'restore',
+				description: 'Restores a soft deleted channel',
+				action: 'Restore a soft-deleted channel',
+			},
+			{
+				name: 'Search',
+				value: 'search',
+				description: 'Search for a channel',
+				action: 'Search for a channel',
+			},
+			{
+				name: 'Statistics',
+				value: 'statistics',
+				description: 'Get statistics for a channel',
+				action: 'Get statistics for a channel',
+			},
+		],
+		default: 'create',
+	},
+	...create.description,
+	...del.description,
+	...members.description,
+	...restore.description,
+	...addUser.description,
+	...statistics.description,
+	...search.description,
+];

packages/nodes-base/nodes/Mattermost/v1/actions/channel/members/description.ts

@@ -0,0 +1,89 @@
+import type { ChannelProperties } from '../../Interfaces';
+
+export const channelMembersDescription: ChannelProperties = [
+	{
+		displayName: 'Team Name or ID',
+		name: 'teamId',
+		type: 'options',
+		typeOptions: {
+			loadOptionsMethod: 'getTeams',
+		},
+		options: [],
+		default: '',
+		required: true,
+		displayOptions: {
+			show: {
+				operation: ['members'],
+				resource: ['channel'],
+			},
+		},
+		description:
+			'The Mattermost Team. Choose from the list, or specify an ID using an <a href="https://docs.n8n.io/code/expressions/">expression</a>.',
+	},
+	{
+		displayName: 'Channel Name or ID',
+		name: 'channelId',
+		type: 'options',
+		typeOptions: {
+			loadOptionsMethod: 'getChannelsInTeam',
+			loadOptionsDependsOn: ['teamId'],
+		},
+		options: [],
+		default: '',
+		required: true,
+		displayOptions: {
+			show: {
+				operation: ['members'],
+				resource: ['channel'],
+			},
+		},
+		description:
+			'The Mattermost Team. Choose from the list, or specify an ID using an <a href="https://docs.n8n.io/code/expressions/">expression</a>.',
+	},
+	{
+		displayName: 'Resolve Data',
+		name: 'resolveData',
+		type: 'boolean',
+		displayOptions: {
+			show: {
+				resource: ['channel'],
+				operation: ['members'],
+			},
+		},
+		default: true,
+		// eslint-disable-next-line n8n-nodes-base/node-param-description-boolean-without-whether
+		description:
+			'By default the response only contain the ID of the user. If this option gets activated, it will resolve the user automatically.',
+	},
+	{
+		displayName: 'Return All',
+		name: 'returnAll',
+		type: 'boolean',
+		displayOptions: {
+			show: {
+				operation: ['members'],
+				resource: ['channel'],
+			},
+		},
+		default: true,
+		description: 'Whether to return all results or only up to a given limit',
+	},
+	{
+		displayName: 'Limit',
+		name: 'limit',
+		type: 'number',
+		displayOptions: {
+			show: {
+				operation: ['members'],
+				resource: ['channel'],
+				returnAll: [false],
+			},
+		},
+		typeOptions: {
+			minValue: 1,
+			maxValue: 100,
+		},
+		default: 100,
+		description: 'Max number of results to return',
+	},
+];

packages/nodes-base/nodes/Mattermost/v1/actions/channel/members/execute.ts

@@ -0,0 +1,44 @@
+import type { IExecuteFunctions, IDataObject, INodeExecutionData } from 'n8n-workflow';
+
+import { apiRequest, apiRequestAllItems } from '../../../transport';
+
+export async function members(
+	this: IExecuteFunctions,
+	index: number,
+): Promise<INodeExecutionData[]> {
+	const channelId = this.getNodeParameter('channelId', index) as string;
+	const returnAll = this.getNodeParameter('returnAll', index);
+	const resolveData = this.getNodeParameter('resolveData', index);
+	const limit = this.getNodeParameter('limit', index, 0);
+
+	const body = {} as IDataObject;
+	const qs = {} as IDataObject;
+	const requestMethod = 'GET';
+	const endpoint = `channels/${channelId}/members`;
+
+	if (!returnAll) {
+		qs.per_page = this.getNodeParameter('limit', index);
+	}
+
+	let responseData;
+
+	if (returnAll) {
+		responseData = await apiRequestAllItems.call(this, requestMethod, endpoint, body, qs);
+	} else {
+		responseData = await apiRequest.call(this, requestMethod, endpoint, body, qs);
+		if (limit) {
+			responseData = responseData.slice(0, limit);
+		}
+		if (resolveData) {
+			const userIds: string[] = [];
+			for (const data of responseData) {
+				userIds.push(data.user_id as string);
+			}
+			if (userIds.length > 0) {
+				responseData = await apiRequest.call(this, 'POST', 'users/ids', userIds, qs);
+			}
+		}
+	}
+
+	return this.helpers.returnJsonArray(responseData as IDataObject[]);
+}

packages/nodes-base/nodes/Mattermost/v1/actions/channel/members/index.ts

@@ -0,0 +1,4 @@
+import { channelMembersDescription as description } from './description';
+import { members as execute } from './execute';
+
+export { description, execute };

packages/nodes-base/nodes/Mattermost/v1/actions/channel/restore/description.ts

@@ -0,0 +1,18 @@
+import type { ChannelProperties } from '../../Interfaces';
+
+export const channelRestoreDescription: ChannelProperties = [
+	{
+		displayName: 'Channel ID',
+		name: 'channelId',
+		type: 'string',
+		default: '',
+		required: true,
+		displayOptions: {
+			show: {
+				operation: ['restore'],
+				resource: ['channel'],
+			},
+		},
+		description: 'The ID of the channel to restore',
+	},
+];

packages/nodes-base/nodes/Mattermost/v1/actions/channel/restore/execute.ts

@@ -0,0 +1,19 @@
+import type { IExecuteFunctions, IDataObject, INodeExecutionData } from 'n8n-workflow';
+
+import { apiRequest } from '../../../transport';
+
+export async function restore(
+	this: IExecuteFunctions,
+	index: number,
+): Promise<INodeExecutionData[]> {
+	const channelId = this.getNodeParameter('channelId', index) as string;
+
+	const body = {} as IDataObject;
+	const qs = {} as IDataObject;
+	const requestMethod = 'POST';
+	const endpoint = `channels/${channelId}/restore`;
+
+	const responseData = await apiRequest.call(this, requestMethod, endpoint, body, qs);
+
+	return this.helpers.returnJsonArray(responseData as IDataObject[]);
+}

packages/nodes-base/nodes/Mattermost/v1/actions/channel/restore/index.ts

@@ -0,0 +1,4 @@
+import { channelRestoreDescription as description } from './description';
+import { restore as execute } from './execute';
+
+export { description, execute };

packages/nodes-base/nodes/Mattermost/v1/actions/channel/search/description.ts

@@ -0,0 +1,69 @@
+import type { ChannelProperties } from '../../Interfaces';
+
+export const channelSearchDescription: ChannelProperties = [
+	{
+		displayName: 'Team Name or ID',
+		name: 'teamId',
+		type: 'options',
+		typeOptions: {
+			loadOptionsMethod: 'getTeams',
+		},
+		options: [],
+		default: '',
+		required: true,
+		displayOptions: {
+			show: {
+				operation: ['search'],
+				resource: ['channel'],
+			},
+		},
+		description:
+			'The Mattermost Team. Choose from the list, or specify an ID using an <a href="https://docs.n8n.io/code/expressions/">expression</a>.',
+	},
+	{
+		displayName: 'Search Term',
+		name: 'term',
+		type: 'string',
+		default: '',
+		placeholder: 'General',
+		displayOptions: {
+			show: {
+				operation: ['search'],
+				resource: ['channel'],
+			},
+		},
+		required: true,
+		description: 'The search term for Channels in a Team',
+	},
+	{
+		displayName: 'Return All',
+		name: 'returnAll',
+		type: 'boolean',
+		default: false,
+		description: 'Whether to return all results or only up to a given limit',
+		displayOptions: {
+			show: {
+				operation: ['search'],
+				resource: ['channel'],
+			},
+		},
+	},
+	{
+		displayName: 'Limit',
+		name: 'limit',
+		type: 'number',
+		default: 100,
+		description: 'Max number of results to return',
+		typeOptions: {
+			minValue: 1,
+			maxValue: 100,
+		},
+		displayOptions: {
+			show: {
+				operation: ['search'],
+				resource: ['channel'],
+				returnAll: [false],
+			},
+		},
+	},
+];

packages/nodes-base/nodes/Mattermost/v1/actions/channel/search/execute.ts

@@ -0,0 +1,26 @@
+import type { IExecuteFunctions, IDataObject, INodeExecutionData } from 'n8n-workflow';
+
+import { apiRequest } from '../../../transport';
+
+export async function search(
+	this: IExecuteFunctions,
+	index: number,
+): Promise<INodeExecutionData[]> {
+	const body = {} as IDataObject;
+	const qs = {} as IDataObject;
+	const requestMethod = 'POST';
+	const teamId = this.getNodeParameter('teamId', index);
+	const returnAll = this.getNodeParameter('returnAll', 0);
+	const endpoint = `teams/${teamId}/channels/search`;
+
+	body.term = this.getNodeParameter('term', index) as string;
+
+	let responseData = await apiRequest.call(this, requestMethod, endpoint, body, qs);
+
+	if (!returnAll) {
+		const limit = this.getNodeParameter('limit', 0);
+		responseData = responseData.slice(0, limit);
+	}
+
+	return this.helpers.returnJsonArray(responseData as IDataObject[]);
+}

packages/nodes-base/nodes/Mattermost/v1/actions/channel/search/index.ts

@@ -0,0 +1,4 @@
+import { channelSearchDescription as description } from './description';
+import { search as execute } from './execute';
+
+export { description, execute };

packages/nodes-base/nodes/Mattermost/v1/actions/channel/statistics/description.ts

@@ -0,0 +1,23 @@
+import type { ChannelProperties } from '../../Interfaces';
+
+export const channelStatisticsDescription: ChannelProperties = [
+	{
+		displayName: 'Channel Name or ID',
+		name: 'channelId',
+		type: 'options',
+		typeOptions: {
+			loadOptionsMethod: 'getChannels',
+		},
+		options: [],
+		default: '',
+		required: true,
+		displayOptions: {
+			show: {
+				operation: ['statistics'],
+				resource: ['channel'],
+			},
+		},
+		description:
+			'The ID of the channel to get the statistics from. Choose from the list, or specify an ID using an <a href="https://docs.n8n.io/code/expressions/">expression</a>.',
+	},
+];

packages/nodes-base/nodes/Mattermost/v1/actions/channel/statistics/execute.ts

@@ -0,0 +1,19 @@
+import type { IExecuteFunctions, IDataObject, INodeExecutionData } from 'n8n-workflow';
+
+import { apiRequest } from '../../../transport';
+
+export async function statistics(
+	this: IExecuteFunctions,
+	index: number,
+): Promise<INodeExecutionData[]> {
+	const channelId = this.getNodeParameter('channelId', index) as string;
+
+	const body = {} as IDataObject;
+	const qs = {} as IDataObject;
+	const requestMethod = 'GET';
+	const endpoint = `channels/${channelId}/stats`;
+
+	const responseData = await apiRequest.call(this, requestMethod, endpoint, body, qs);
+
+	return this.helpers.returnJsonArray(responseData as IDataObject[]);
+}

packages/nodes-base/nodes/Mattermost/v1/actions/channel/statistics/index.ts

@@ -0,0 +1,4 @@
+import { channelStatisticsDescription as description } from './description';
+import { statistics as execute } from './execute';
+
+export { description, execute };

packages/nodes-base/nodes/Mattermost/v1/actions/message/del/description.ts

@@ -0,0 +1,18 @@
+import type { MessageProperties } from '../../Interfaces';
+
+export const messageDeleteDescription: MessageProperties = [
+	{
+		displayName: 'Post ID',
+		name: 'postId',
+		type: 'string',
+		required: true,
+		displayOptions: {
+			show: {
+				resource: ['message'],
+				operation: ['delete'],
+			},
+		},
+		default: '',
+		description: 'ID of the post to delete',
+	},
+];

packages/nodes-base/nodes/Mattermost/v1/actions/message/del/execute.ts

@@ -0,0 +1,16 @@
+import type { IExecuteFunctions, IDataObject, INodeExecutionData } from 'n8n-workflow';
+
+import { apiRequest } from '../../../transport';
+
+export async function del(this: IExecuteFunctions, index: number): Promise<INodeExecutionData[]> {
+	const postId = this.getNodeParameter('postId', index) as string;
+
+	const body = {} as IDataObject;
+	const qs = {} as IDataObject;
+	const requestMethod = 'DELETE';
+	const endpoint = `posts/${postId}`;
+
+	const responseData = await apiRequest.call(this, requestMethod, endpoint, body, qs);
+
+	return this.helpers.returnJsonArray(responseData as IDataObject[]);
+}

packages/nodes-base/nodes/Mattermost/v1/actions/message/del/index.ts

@@ -0,0 +1,4 @@
+import { messageDeleteDescription as description } from './description';
+import { del as execute } from './execute';
+
+export { description, execute };

packages/nodes-base/nodes/Mattermost/v1/actions/message/index.ts

@@ -0,0 +1,45 @@
+import type { INodeProperties } from 'n8n-workflow';
+
+import * as del from './del';
+import * as post from './post';
+import * as postEphemeral from './postEphemeral';
+
+export { del as delete, post, postEphemeral };
+
+export const descriptions: INodeProperties[] = [
+	{
+		displayName: 'Operation',
+		name: 'operation',
+		type: 'options',
+		noDataExpression: true,
+		displayOptions: {
+			show: {
+				resource: ['message'],
+			},
+		},
+		options: [
+			{
+				name: 'Delete',
+				value: 'delete',
+				description: 'Soft delete a post, by marking the post as deleted in the database',
+				action: 'Delete a message',
+			},
+			{
+				name: 'Post',
+				value: 'post',
+				description: 'Post a message into a channel',
+				action: 'Post a message',
+			},
+			{
+				name: 'Post Ephemeral',
+				value: 'postEphemeral',
+				description: 'Post an ephemeral message into a channel',
+				action: 'Post an ephemeral message',
+			},
+		],
+		default: 'post',
+	},
+	...del.description,
+	...post.description,
+	...postEphemeral.description,
+];

packages/nodes-base/nodes/Mattermost/v1/actions/message/post/description.ts

@@ -0,0 +1,382 @@
+import type { MessageProperties } from '../../Interfaces';
+
+export const messagePostDescription: MessageProperties = [
+	{
+		displayName: 'Channel Name or ID',
+		name: 'channelId',
+		type: 'options',
+		typeOptions: {
+			loadOptionsMethod: 'getChannels',
+		},
+		options: [],
+		default: '',
+		required: true,
+		displayOptions: {
+			show: {
+				operation: ['post'],
+				resource: ['message'],
+			},
+		},
+		description:
+			'The ID of the channel to post to. Choose from the list, or specify an ID using an <a href="https://docs.n8n.io/code/expressions/">expression</a>.',
+	},
+	{
+		displayName: 'Message',
+		name: 'message',
+		type: 'string',
+		default: '',
+		displayOptions: {
+			show: {
+				operation: ['post'],
+				resource: ['message'],
+			},
+		},
+		description: 'The text to send',
+	},
+	{
+		displayName: 'Attachments',
+		name: 'attachments',
+		type: 'collection',
+		typeOptions: {
+			multipleValues: true,
+			multipleValueButtonText: 'Add attachment',
+		},
+		displayOptions: {
+			show: {
+				operation: ['post'],
+				resource: ['message'],
+			},
+		},
+		default: {},
+		description: 'The attachment to add',
+		placeholder: 'Add attachment item',
+		options: [
+			{
+				displayName: 'Actions',
+				name: 'actions',
+				placeholder: 'Add Actions',
+				description:
+					'Actions to add to message. More information can be found <a href="https://docs.mattermost.com/developer/interactive-messages.html" target="_blank">here</a>.',
+				type: 'fixedCollection',
+				typeOptions: {
+					multipleValues: true,
+				},
+				default: {},
+				options: [
+					{
+						displayName: 'Item',
+						name: 'item',
+						values: [
+							{
+								displayName: 'Type',
+								name: 'type',
+								type: 'options',
+								options: [
+									{
+										name: 'Button',
+										value: 'button',
+									},
+									{
+										name: 'Select',
+										value: 'select',
+									},
+								],
+								default: 'button',
+								description: 'The type of the action',
+							},
+							{
+								displayName: 'Data Source',
+								name: 'data_source',
+								type: 'options',
+								displayOptions: {
+									show: {
+										type: ['select'],
+									},
+								},
+								options: [
+									{
+										name: 'Channels',
+										value: 'channels',
+									},
+									{
+										name: 'Custom',
+										value: 'custom',
+									},
+									{
+										name: 'Users',
+										value: 'users',
+									},
+								],
+								default: 'custom',
+								description: 'The type of the action',
+							},
+							{
+								displayName: 'Options',
+								name: 'options',
+								placeholder: 'Add option',
+								description: 'Adds a new option to select field',
+								type: 'fixedCollection',
+								typeOptions: {
+									multipleValues: true,
+								},
+								displayOptions: {
+									show: {
+										data_source: ['custom'],
+										type: ['select'],
+									},
+								},
+								default: {},
+								options: [
+									{
+										name: 'option',
+										displayName: 'Option',
+										default: {},
+										values: [
+											{
+												displayName: 'Option Text',
+												name: 'text',
+												type: 'string',
+												default: '',
+												description: 'Text of the option',
+											},
+											{
+												displayName: 'Option Value',
+												name: 'value',
+												type: 'string',
+												default: '',
+												description: 'Value of the option',
+											},
+										],
+									},
+								],
+							},
+							{
+								displayName: 'Name',
+								name: 'name',
+								type: 'string',
+								default: '',
+								description: 'Name of the Action',
+							},
+							{
+								displayName: 'Integration',
+								name: 'integration',
+								placeholder: 'Add Integration',
+								description: 'Integration to add to message',
+								type: 'fixedCollection',
+								typeOptions: {
+									multipleValues: false,
+								},
+								default: {},
+								options: [
+									{
+										displayName: 'Item',
+										name: 'item',
+										default: {},
+										values: [
+											{
+												displayName: 'URL',
+												name: 'url',
+												type: 'string',
+												default: '',
+												description: 'URL of the Integration',
+											},
+											{
+												displayName: 'Context',
+												name: 'context',
+												placeholder: 'Add Context to Integration',
+												description: 'Adds a Context values set',
+												type: 'fixedCollection',
+												typeOptions: {
+													multipleValues: true,
+												},
+												default: {},
+												options: [
+													{
+														name: 'property',
+														displayName: 'Property',
+														default: {},
+														values: [
+															{
+																displayName: 'Property Name',
+																name: 'name',
+																type: 'string',
+																default: '',
+																description: 'Name of the property to set',
+															},
+															{
+																displayName: 'Property Value',
+																name: 'value',
+																type: 'string',
+																default: '',
+																description: 'Value of the property to set',
+															},
+														],
+													},
+												],
+											},
+										],
+									},
+								],
+							},
+						],
+					},
+				],
+			},
+			{
+				displayName: 'Author Icon',
+				name: 'author_icon',
+				type: 'string',
+				default: '',
+				description: 'Icon which should appear for the user',
+			},
+			{
+				displayName: 'Author Link',
+				name: 'author_link',
+				type: 'string',
+				default: '',
+				description: 'Link for the author',
+			},
+			{
+				displayName: 'Author Name',
+				name: 'author_name',
+				type: 'string',
+				default: '',
+				description: 'Name that should appear',
+			},
+			{
+				displayName: 'Color',
+				name: 'color',
+				type: 'color',
+				default: '#ff0000',
+				description: 'Color of the line left of text',
+			},
+			{
+				displayName: 'Fallback Text',
+				name: 'fallback',
+				type: 'string',
+				default: '',
+				description: 'Required plain-text summary of the attachment',
+			},
+			{
+				displayName: 'Fields',
+				name: 'fields',
+				placeholder: 'Add Fields',
+				description: 'Fields to add to message',
+				type: 'fixedCollection',
+				typeOptions: {
+					multipleValues: true,
+				},
+				default: {},
+				options: [
+					{
+						name: 'item',
+						displayName: 'Item',
+						values: [
+							{
+								displayName: 'Title',
+								name: 'title',
+								type: 'string',
+								default: '',
+								description: 'Title of the item',
+							},
+							{
+								displayName: 'Value',
+								name: 'value',
+								type: 'string',
+								default: '',
+								description: 'Value of the item',
+							},
+							{
+								displayName: 'Short',
+								name: 'short',
+								type: 'boolean',
+								default: true,
+								description: 'Whether items can be displayed next to each other',
+							},
+						],
+					},
+				],
+			},
+			{
+				displayName: 'Footer',
+				name: 'footer',
+				type: 'string',
+				default: '',
+				description: 'Text of footer to add',
+			},
+			{
+				displayName: 'Footer Icon',
+				name: 'footer_icon',
+				type: 'string',
+				default: '',
+				description: 'Icon which should appear next to footer',
+			},
+			{
+				displayName: 'Image URL',
+				name: 'image_url',
+				type: 'string',
+				default: '',
+				description: 'URL of image',
+			},
+			{
+				displayName: 'Pretext',
+				name: 'pretext',
+				type: 'string',
+				default: '',
+				description: 'Text which appears before the message block',
+			},
+			{
+				displayName: 'Text',
+				name: 'text',
+				type: 'string',
+				default: '',
+				description: 'Text to send',
+			},
+			{
+				displayName: 'Thumbnail URL',
+				name: 'thumb_url',
+				type: 'string',
+				default: '',
+				description: 'URL of thumbnail',
+			},
+			{
+				displayName: 'Title',
+				name: 'title',
+				type: 'string',
+				default: '',
+				description: 'Title of the message',
+			},
+			{
+				displayName: 'Title Link',
+				name: 'title_link',
+				type: 'string',
+				default: '',
+				description: 'Link of the title',
+			},
+		],
+	},
+	{
+		displayName: 'Other Options',
+		name: 'otherOptions',
+		type: 'collection',
+		displayOptions: {
+			show: {
+				operation: ['post'],
+				resource: ['message'],
+			},
+		},
+		default: {},
+		description: 'Other options to set',
+		placeholder: 'Add option',
+		options: [
+			{
+				displayName: 'Parent Post ID',
+				name: 'root_id',
+				type: 'string',
+				default: '',
+				description:
+					'If set, the created message will be a threaded reply to the specified parent post ID',
+			},
+		],
+	},
+];

packages/nodes-base/nodes/Mattermost/v1/actions/message/post/execute.ts

@@ -0,0 +1,85 @@
+import type { IExecuteFunctions, IDataObject, INodeExecutionData } from 'n8n-workflow';
+
+import { apiRequest } from '../../../transport';
+import type { IAttachment } from '../../Interfaces';
+
+export async function post(this: IExecuteFunctions, index: number): Promise<INodeExecutionData[]> {
+	const body = {} as IDataObject;
+	const qs = {} as IDataObject;
+	const requestMethod = 'POST';
+	const endpoint = 'posts';
+
+	body.channel_id = this.getNodeParameter('channelId', index) as string;
+	body.message = this.getNodeParameter('message', index) as string;
+
+	const attachments = this.getNodeParameter('attachments', index, []) as unknown as IAttachment[];
+	// The node does save the fields data differently than the API
+	// expects so fix the data befre we send the request
+	for (const attachment of attachments) {
+		if (attachment.fields !== undefined) {
+			if (attachment.fields.item !== undefined) {
+				// Move the field-content up
+				// @ts-ignore
+				attachment.fields = attachment.fields.item;
+			} else {
+				// If it does not have any items set remove it
+				// @ts-ignore
+				delete attachment.fields;
+			}
+		}
+	}
+
+	for (const attachment of attachments) {
+		if (attachment.actions !== undefined) {
+			if (attachment.actions.item !== undefined) {
+				// Move the field-content up
+				// @ts-ignore
+				attachment.actions = attachment.actions.item;
+			} else {
+				// If it does not have any items set remove it
+				// @ts-ignore
+				delete attachment.actions;
+			}
+		}
+	}
+
+	for (const attachment of attachments) {
+		if (Array.isArray(attachment.actions)) {
+			for (const attaction of attachment.actions) {
+				if (attaction.type === 'button') {
+					delete attaction.type;
+				}
+				if (attaction.data_source === 'custom') {
+					delete attaction.data_source;
+				}
+				if (attaction.options) {
+					attaction.options = attaction.options.option;
+				}
+
+				if (attaction.integration.item !== undefined) {
+					attaction.integration = attaction.integration.item;
+					if (Array.isArray(attaction.integration.context.property)) {
+						const tmpcontex = {};
+						for (const attactionintegprop of attaction.integration.context.property) {
+							Object.assign(tmpcontex, { [attactionintegprop.name]: attactionintegprop.value });
+						}
+						delete attaction.integration.context;
+						attaction.integration.context = tmpcontex;
+					}
+				}
+			}
+		}
+	}
+
+	body.props = {
+		attachments,
+	};
+
+	// Add all the other options to the request
+	const otherOptions = this.getNodeParameter('otherOptions', index) as IDataObject;
+	Object.assign(body, otherOptions);
+
+	const responseData = await apiRequest.call(this, requestMethod, endpoint, body, qs);
+
+	return this.helpers.returnJsonArray(responseData as IDataObject[]);
+}

packages/nodes-base/nodes/Mattermost/v1/actions/message/post/index.ts

@@ -0,0 +1,4 @@
+import { messagePostDescription as description } from './description';
+import { post as execute } from './execute';
+
+export { description, execute };

packages/nodes-base/nodes/Mattermost/v1/actions/message/postEphemeral/description.ts

@@ -0,0 +1,54 @@
+import type { MessageProperties } from '../../Interfaces';
+
+export const messagePostEphemeralDescription: MessageProperties = [
+	{
+		displayName: 'User Name or ID',
+		name: 'userId',
+		type: 'options',
+		typeOptions: {
+			loadOptionsMethod: 'getUsers',
+		},
+		options: [],
+		default: '',
+		required: true,
+		displayOptions: {
+			show: {
+				operation: ['postEphemeral'],
+				resource: ['message'],
+			},
+		},
+		description:
+			'ID of the user to send the ephemeral message to. Choose from the list, or specify an ID using an <a href="https://docs.n8n.io/code/expressions/">expression</a>.',
+	},
+	{
+		displayName: 'Channel Name or ID',
+		name: 'channelId',
+		type: 'options',
+		typeOptions: {
+			loadOptionsMethod: 'getChannels',
+		},
+		default: '',
+		required: true,
+		displayOptions: {
+			show: {
+				operation: ['postEphemeral'],
+				resource: ['message'],
+			},
+		},
+		description:
+			'ID of the channel to send the ephemeral message in. Choose from the list, or specify an ID using an <a href="https://docs.n8n.io/code/expressions/">expression</a>.',
+	},
+	{
+		displayName: 'Message',
+		name: 'message',
+		type: 'string',
+		default: '',
+		displayOptions: {
+			show: {
+				operation: ['postEphemeral'],
+				resource: ['message'],
+			},
+		},
+		description: 'Text to send in the ephemeral message',
+	},
+];

packages/nodes-base/nodes/Mattermost/v1/actions/message/postEphemeral/execute.ts

@@ -0,0 +1,24 @@
+import type { IExecuteFunctions, IDataObject, INodeExecutionData } from 'n8n-workflow';
+
+import { apiRequest } from '../../../transport';
+
+export async function postEphemeral(
+	this: IExecuteFunctions,
+	index: number,
+): Promise<INodeExecutionData[]> {
+	const qs = {} as IDataObject;
+	const requestMethod = 'POST';
+	const endpoint = 'posts/ephemeral';
+
+	const body = {
+		user_id: this.getNodeParameter('userId', index),
+		post: {
+			channel_id: this.getNodeParameter('channelId', index),
+			message: this.getNodeParameter('message', index),
+		},
+	} as IDataObject;
+
+	const responseData = await apiRequest.call(this, requestMethod, endpoint, body, qs);
+
+	return this.helpers.returnJsonArray(responseData as IDataObject[]);
+}

packages/nodes-base/nodes/Mattermost/v1/actions/message/postEphemeral/index.ts

@@ -0,0 +1,4 @@
+import { messagePostEphemeralDescription as description } from './description';
+import { postEphemeral as execute } from './execute';
+
+export { description, execute };

packages/nodes-base/nodes/Mattermost/v1/actions/reaction/create/description.ts

@@ -0,0 +1,53 @@
+import type { ReactionProperties } from '../../Interfaces';
+
+export const reactionCreateDescription: ReactionProperties = [
+	{
+		displayName: 'User Name or ID',
+		name: 'userId',
+		type: 'options',
+		typeOptions: {
+			loadOptionsMethod: 'getUsers',
+		},
+		options: [],
+		default: '',
+		required: true,
+		displayOptions: {
+			show: {
+				resource: ['reaction'],
+				operation: ['create'],
+			},
+		},
+		description:
+			'ID of the user sending the reaction. Choose from the list, or specify an ID using an <a href="https://docs.n8n.io/code/expressions/">expression</a>.',
+	},
+	{
+		displayName: 'Post ID',
+		name: 'postId',
+		type: 'string',
+		default: '',
+		placeholder: '3moacfqxmbdw38r38fjprh6zsr',
+		required: true,
+		displayOptions: {
+			show: {
+				resource: ['reaction'],
+				operation: ['create'],
+			},
+		},
+		description:
+			'ID of the post to react to. Obtainable from the post link: <code>https://mattermost.internal.n8n.io/[server]/pl/[postId]</code>',
+	},
+	{
+		displayName: 'Emoji Name',
+		name: 'emojiName',
+		type: 'string',
+		default: '',
+		required: true,
+		displayOptions: {
+			show: {
+				resource: ['reaction'],
+				operation: ['create'],
+			},
+		},
+		description: 'Emoji to use for this reaction',
+	},
+];

packages/nodes-base/nodes/Mattermost/v1/actions/reaction/create/execute.ts

@@ -0,0 +1,22 @@
+import type { IExecuteFunctions, IDataObject, INodeExecutionData } from 'n8n-workflow';
+
+import { apiRequest } from '../../../transport';
+
+export async function create(
+	this: IExecuteFunctions,
+	index: number,
+): Promise<INodeExecutionData[]> {
+	const qs = {} as IDataObject;
+	const requestMethod = 'POST';
+	const endpoint = 'reactions';
+	const body = {
+		user_id: this.getNodeParameter('userId', index),
+		post_id: this.getNodeParameter('postId', index),
+		emoji_name: (this.getNodeParameter('emojiName', index) as string).replace(/:/g, ''),
+		create_at: Date.now(),
+	} as { user_id: string; post_id: string; emoji_name: string; create_at: number };
+
+	const responseData = await apiRequest.call(this, requestMethod, endpoint, body, qs);
+
+	return this.helpers.returnJsonArray(responseData as IDataObject[]);
+}

packages/nodes-base/nodes/Mattermost/v1/actions/reaction/create/index.ts

@@ -0,0 +1,4 @@
+import { reactionCreateDescription as description } from './description';
+import { create as execute } from './execute';
+
+export { description, execute };

packages/nodes-base/nodes/Mattermost/v1/actions/reaction/del/description.ts

@@ -0,0 +1,53 @@
+import type { ReactionProperties } from '../../Interfaces';
+
+export const reactionDeleteDescription: ReactionProperties = [
+	{
+		displayName: 'User Name or ID',
+		name: 'userId',
+		type: 'options',
+		typeOptions: {
+			loadOptionsMethod: 'getUsers',
+		},
+		options: [],
+		default: '',
+		required: true,
+		displayOptions: {
+			show: {
+				resource: ['reaction'],
+				operation: ['delete'],
+			},
+		},
+		description:
+			'ID of the user whose reaction to delete. Choose from the list, or specify an ID using an <a href="https://docs.n8n.io/code/expressions/">expression</a>.',
+	},
+	{
+		displayName: 'Post ID',
+		name: 'postId',
+		type: 'string',
+		default: '',
+		placeholder: '3moacfqxmbdw38r38fjprh6zsr',
+		required: true,
+		displayOptions: {
+			show: {
+				resource: ['reaction'],
+				operation: ['delete'],
+			},
+		},
+		description:
+			'ID of the post whose reaction to delete. Obtainable from the post link: <code>https://mattermost.internal.n8n.io/[server]/pl/[postId]</code>',
+	},
+	{
+		displayName: 'Emoji Name',
+		name: 'emojiName',
+		type: 'string',
+		default: '',
+		required: true,
+		displayOptions: {
+			show: {
+				resource: ['reaction'],
+				operation: ['delete'],
+			},
+		},
+		description: 'Name of the emoji to delete',
+	},
+];

packages/nodes-base/nodes/Mattermost/v1/actions/reaction/del/execute.ts

@@ -0,0 +1,18 @@
+import type { IExecuteFunctions, IDataObject, INodeExecutionData } from 'n8n-workflow';
+
+import { apiRequest } from '../../../transport';
+
+export async function del(this: IExecuteFunctions, index: number): Promise<INodeExecutionData[]> {
+	const userId = this.getNodeParameter('userId', index) as string;
+	const postId = this.getNodeParameter('postId', index) as string;
+	const emojiName = (this.getNodeParameter('emojiName', index) as string).replace(/:/g, '');
+
+	const qs = {} as IDataObject;
+	const requestMethod = 'DELETE';
+	const endpoint = `users/${userId}/posts/${postId}/reactions/${emojiName}`;
+	const body = {} as IDataObject;
+
+	const responseData = await apiRequest.call(this, requestMethod, endpoint, body, qs);
+
+	return this.helpers.returnJsonArray(responseData as IDataObject[]);
+}

packages/nodes-base/nodes/Mattermost/v1/actions/reaction/del/index.ts

@@ -0,0 +1,4 @@
+import { reactionDeleteDescription as description } from './description';
+import { del as execute } from './execute';
+
+export { description, execute };

packages/nodes-base/nodes/Mattermost/v1/actions/reaction/getAll/description.ts

@@ -0,0 +1,49 @@
+import type { ReactionProperties } from '../../Interfaces';
+
+export const reactionGetAllDescription: ReactionProperties = [
+	{
+		displayName: 'Post ID',
+		name: 'postId',
+		type: 'string',
+		default: '',
+		required: true,
+		displayOptions: {
+			show: {
+				resource: ['reaction'],
+				operation: ['getAll'],
+			},
+		},
+		description: 'One or more (comma-separated) posts to retrieve reactions from',
+	},
+	{
+		displayName: 'Return All',
+		name: 'returnAll',
+		type: 'boolean',
+		displayOptions: {
+			show: {
+				operation: ['getAll'],
+				resource: ['reaction'],
+			},
+		},
+		default: true,
+		description: 'Whether to return all results or only up to a given limit',
+	},
+	{
+		displayName: 'Limit',
+		name: 'limit',
+		type: 'number',
+		displayOptions: {
+			show: {
+				operation: ['getAll'],
+				resource: ['reaction'],
+				returnAll: [false],
+			},
+		},
+		typeOptions: {
+			minValue: 1,
+			maxValue: 100,
+		},
+		default: 100,
+		description: 'Max number of results to return',
+	},
+];

packages/nodes-base/nodes/Mattermost/v1/actions/reaction/getAll/execute.ts

@@ -0,0 +1,25 @@
+import type { IExecuteFunctions, IDataObject, INodeExecutionData } from 'n8n-workflow';
+
+import { apiRequest } from '../../../transport';
+
+export async function getAll(
+	this: IExecuteFunctions,
+	index: number,
+): Promise<INodeExecutionData[]> {
+	const postId = this.getNodeParameter('postId', index) as string;
+	const limit = this.getNodeParameter('limit', 0, 0);
+
+	const qs = {} as IDataObject;
+	const requestMethod = 'GET';
+	const endpoint = `posts/${postId}/reactions`;
+	const body = {} as IDataObject;
+
+	let responseData = await apiRequest.call(this, requestMethod, endpoint, body, qs);
+	if (responseData === null) {
+		return [];
+	}
+	if (limit > 0) {
+		responseData = responseData.slice(0, limit);
+	}
+	return this.helpers.returnJsonArray(responseData as IDataObject[]);
+}

packages/nodes-base/nodes/Mattermost/v1/actions/reaction/getAll/index.ts

@@ -0,0 +1,4 @@
+import { reactionGetAllDescription as description } from './description';
+import { getAll as execute } from './execute';
+
+export { description, execute };

packages/nodes-base/nodes/Mattermost/v1/actions/reaction/index.ts

@@ -0,0 +1,45 @@
+import type { INodeProperties } from 'n8n-workflow';
+
+import * as create from './create';
+import * as del from './del';
+import * as getAll from './getAll';
+
+export { create, del as delete, getAll };
+
+export const descriptions: INodeProperties[] = [
+	{
+		displayName: 'Operation',
+		name: 'operation',
+		type: 'options',
+		noDataExpression: true,
+		displayOptions: {
+			show: {
+				resource: ['reaction'],
+			},
+		},
+		options: [
+			{
+				name: 'Create',
+				value: 'create',
+				description: 'Add a reaction to a post',
+				action: 'Create a reaction',
+			},
+			{
+				name: 'Delete',
+				value: 'delete',
+				description: 'Remove a reaction from a post',
+				action: 'Delete a reaction',
+			},
+			{
+				name: 'Get Many',
+				value: 'getAll',
+				description: 'Get many reactions to one or more posts',
+				action: 'Get many reactions',
+			},
+		],
+		default: 'create',
+	},
+	...create.description,
+	...del.description,
+	...getAll.description,
+];

packages/nodes-base/nodes/Mattermost/v1/actions/router.ts

@@ -0,0 +1,55 @@
+import type { IExecuteFunctions, IDataObject, INodeExecutionData } from 'n8n-workflow';
+
+import * as channel from './channel';
+import type { Mattermost } from './Interfaces';
+import * as message from './message';
+import * as reaction from './reaction';
+import * as user from './user';
+
+export async function router(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
+	const items = this.getInputData();
+	const operationResult: INodeExecutionData[] = [];
+	let responseData: IDataObject | IDataObject[] = [];
+
+	for (let i = 0; i < items.length; i++) {
+		const resource = this.getNodeParameter<Mattermost>('resource', i);
+		let operation = this.getNodeParameter('operation', i);
+		if (operation === 'del') {
+			operation = 'delete';
+		} else if (operation === 'desactive') {
+			operation = 'deactive';
+		}
+
+		const mattermost = {
+			resource,
+			operation,
+		} as Mattermost;
+
+		try {
+			if (mattermost.resource === 'channel') {
+				responseData = await channel[mattermost.operation].execute.call(this, i);
+			} else if (mattermost.resource === 'message') {
+				responseData = await message[mattermost.operation].execute.call(this, i);
+			} else if (mattermost.resource === 'reaction') {
+				responseData = await reaction[mattermost.operation].execute.call(this, i);
+			} else if (mattermost.resource === 'user') {
+				responseData = await user[mattermost.operation].execute.call(this, i);
+			}
+
+			const executionData = this.helpers.constructExecutionMetaData(
+				this.helpers.returnJsonArray(responseData),
+				{ itemData: { item: i } },
+			);
+			operationResult.push(...executionData);
+		} catch (err) {
+			if (this.continueOnFail()) {
+				operationResult.push({ json: this.getInputData(i)[0].json, error: err });
+			} else {
+				if (err.context) err.context.itemIndex = i;
+				throw err;
+			}
+		}
+	}
+
+	return [operationResult];
+}

packages/nodes-base/nodes/Mattermost/v1/actions/user/create/description.ts

@@ -0,0 +1,244 @@
+import type { UserProperties } from '../../Interfaces';
+
+export const userCreateDescription: UserProperties = [
+	{
+		displayName: 'Username',
+		name: 'username',
+		type: 'string',
+		required: true,
+		displayOptions: {
+			show: {
+				resource: ['user'],
+				operation: ['create'],
+			},
+		},
+		default: '',
+	},
+	{
+		displayName: 'Auth Service',
+		name: 'authService',
+		type: 'options',
+		options: [
+			{
+				name: 'Email',
+				value: 'email',
+			},
+			{
+				name: 'Gitlab',
+				value: 'gitlab',
+			},
+			{
+				name: 'Google',
+				value: 'google',
+			},
+			{
+				name: 'LDAP',
+				value: 'ldap',
+			},
+			{
+				name: 'Office365',
+				value: 'office365',
+			},
+			{
+				name: 'SAML',
+				value: 'saml',
+			},
+		],
+		displayOptions: {
+			show: {
+				resource: ['user'],
+				operation: ['create'],
+			},
+		},
+		default: '',
+	},
+	{
+		displayName: 'Auth Data',
+		name: 'authData',
+		displayOptions: {
+			show: {
+				resource: ['user'],
+				operation: ['create'],
+			},
+			hide: {
+				authService: ['email'],
+			},
+		},
+		type: 'string',
+		default: '',
+	},
+	{
+		displayName: 'Email',
+		name: 'email',
+		type: 'string',
+		placeholder: 'name@email.com',
+		default: '',
+		displayOptions: {
+			show: {
+				resource: ['user'],
+				operation: ['create'],
+				authService: ['email'],
+			},
+		},
+	},
+	{
+		displayName: 'Password',
+		name: 'password',
+		type: 'string',
+		typeOptions: {
+			password: true,
+		},
+		displayOptions: {
+			show: {
+				resource: ['user'],
+				operation: ['create'],
+				authService: ['email'],
+			},
+		},
+		default: '',
+		description: 'The password used for email authentication',
+	},
+	{
+		displayName: 'Additional Fields',
+		name: 'additionalFields',
+		type: 'collection',
+		placeholder: 'Add Field',
+		displayOptions: {
+			show: {
+				operation: ['create'],
+				resource: ['user'],
+			},
+		},
+		default: {},
+		options: [
+			{
+				displayName: 'First Name',
+				name: 'first_name',
+				type: 'string',
+				default: '',
+			},
+			{
+				displayName: 'Last Name',
+				name: 'last_name',
+				type: 'string',
+				default: '',
+			},
+			{
+				displayName: 'Locale',
+				name: 'locale',
+				type: 'string',
+				default: '',
+			},
+			{
+				displayName: 'Nickname',
+				name: 'nickname',
+				type: 'string',
+				default: '',
+			},
+			{
+				displayName: 'Notification Settings',
+				name: 'notificationUi',
+				type: 'fixedCollection',
+				placeholder: 'Add Notification Setting',
+				default: {},
+				typeOptions: {
+					multipleValues: false,
+				},
+				options: [
+					{
+						displayName: 'Notify',
+						name: 'notificationValues',
+						values: [
+							{
+								displayName: 'Channel',
+								name: 'channel',
+								type: 'boolean',
+								default: true,
+								description:
+									'Whether to enable channel-wide notifications (@channel, @all, etc.), "false" to disable. Defaults to "true".',
+							},
+							{
+								displayName: 'Desktop',
+								name: 'desktop',
+								type: 'options',
+								options: [
+									{
+										name: 'All',
+										value: 'all',
+										description: 'Notifications for all activity',
+									},
+									{
+										name: 'Mention',
+										value: 'mention',
+										description: 'Mentions and direct messages only',
+									},
+									{
+										name: 'None',
+										value: 'none',
+										description: 'Mentions and direct messages only',
+									},
+								],
+								default: 'all',
+							},
+							{
+								displayName: 'Desktop Sound',
+								name: 'desktop_sound',
+								type: 'boolean',
+								default: true,
+								description:
+									'Whether to enable sound on desktop notifications, "false" to disable. Defaults to "true".',
+							},
+							{
+								displayName: 'Email',
+								name: 'email',
+								type: 'boolean',
+								default: false,
+								description:
+									'Whether to enable email notifications, "false" to disable. Defaults to "false".',
+							},
+							{
+								displayName: 'First Name',
+								name: 'first_name',
+								type: 'boolean',
+								default: false,
+								description:
+									'Whether to enable mentions for first name. Defaults to "true" if a first name is set, "false" otherwise.',
+							},
+							{
+								displayName: 'Mention Keys',
+								name: 'mention_keys',
+								type: 'string',
+								default: '',
+								description:
+									'A comma-separated list of words to count as mentions. Defaults to username and @username.',
+							},
+							{
+								displayName: 'Push',
+								name: 'push',
+								type: 'options',
+								options: [
+									{
+										name: 'All',
+										value: 'all',
+										description: 'Notifications for all activity',
+									},
+									{
+										name: 'Mention',
+										value: 'mention',
+										description: 'Mentions and direct messages only',
+									},
+									{
+										name: 'None',
+										value: 'none',
+										description: 'Mentions and direct messages only',
+									},
+								],
+								default: 'mention',
+							},
+						],
+					},
+				],
+			},
+		],
+	},
+];

packages/nodes-base/nodes/Mattermost/v1/actions/user/create/execute.ts

@@ -0,0 +1,37 @@
+import type { IExecuteFunctions, IDataObject, INodeExecutionData } from 'n8n-workflow';
+
+import { apiRequest } from '../../../transport';
+
+export async function create(
+	this: IExecuteFunctions,
+	index: number,
+): Promise<INodeExecutionData[]> {
+	const username = this.getNodeParameter('username', index) as string;
+	const authService = this.getNodeParameter('authService', index) as string;
+	const additionalFields = this.getNodeParameter('additionalFields', index);
+
+	const qs = {} as IDataObject;
+	const requestMethod = 'POST';
+	const endpoint = 'users';
+	const body = {} as IDataObject;
+
+	body.auth_service = authService;
+
+	body.username = username;
+	Object.assign(body, additionalFields);
+
+	if (body.notificationUi) {
+		body.notify_props = (body.notificationUi as IDataObject).notificationValues;
+	}
+
+	if (authService === 'email') {
+		body.email = this.getNodeParameter('email', index) as string;
+		body.password = this.getNodeParameter('password', index) as string;
+	} else {
+		body.auth_data = this.getNodeParameter('authData', index) as string;
+	}
+
+	const responseData = await apiRequest.call(this, requestMethod, endpoint, body, qs);
+
+	return this.helpers.returnJsonArray(responseData as IDataObject[]);
+}

packages/nodes-base/nodes/Mattermost/v1/actions/user/create/index.ts

@@ -0,0 +1,4 @@
+import { userCreateDescription as description } from './description';
+import { create as execute } from './execute';
+
+export { description, execute };

packages/nodes-base/nodes/Mattermost/v1/actions/user/deactive/description.ts

@@ -0,0 +1,18 @@
+import type { UserProperties } from '../../Interfaces';
+
+export const userDeactiveDescription: UserProperties = [
+	{
+		displayName: 'User ID',
+		name: 'userId',
+		type: 'string',
+		required: true,
+		displayOptions: {
+			show: {
+				resource: ['user'],
+				operation: ['deactive'],
+			},
+		},
+		default: '',
+		description: 'User GUID',
+	},
+];

packages/nodes-base/nodes/Mattermost/v1/actions/user/deactive/execute.ts

@@ -0,0 +1,18 @@
+import type { IExecuteFunctions, IDataObject, INodeExecutionData } from 'n8n-workflow';
+
+import { apiRequest } from '../../../transport';
+
+export async function deactive(
+	this: IExecuteFunctions,
+	index: number,
+): Promise<INodeExecutionData[]> {
+	const userId = this.getNodeParameter('userId', index) as string;
+	const qs = {} as IDataObject;
+	const requestMethod = 'DELETE';
+	const endpoint = `users/${userId}`;
+	const body = {} as IDataObject;
+
+	const responseData = await apiRequest.call(this, requestMethod, endpoint, body, qs);
+
+	return this.helpers.returnJsonArray(responseData as IDataObject[]);
+}

packages/nodes-base/nodes/Mattermost/v1/actions/user/deactive/index.ts

@@ -0,0 +1,4 @@
+import { userDeactiveDescription as description } from './description';
+import { deactive as execute } from './execute';
+
+export { description, execute };

packages/nodes-base/nodes/Mattermost/v1/actions/user/getAll/description.ts

@@ -0,0 +1,103 @@
+import type { UserProperties } from '../../Interfaces';
+
+export const userGetAllDescription: UserProperties = [
+	{
+		displayName: 'Return All',
+		name: 'returnAll',
+		type: 'boolean',
+		displayOptions: {
+			show: {
+				resource: ['user'],
+				operation: ['getAll'],
+			},
+		},
+		default: true,
+		description: 'Whether to return all results or only up to a given limit',
+	},
+	{
+		displayName: 'Limit',
+		name: 'limit',
+		type: 'number',
+		displayOptions: {
+			show: {
+				resource: ['user'],
+				operation: ['getAll'],
+				returnAll: [false],
+			},
+		},
+		typeOptions: {
+			minValue: 1,
+			maxValue: 100,
+		},
+		default: 100,
+		description: 'Max number of results to return',
+	},
+	{
+		displayName: 'Additional Fields',
+		name: 'additionalFields',
+		type: 'collection',
+		placeholder: 'Add Field',
+		displayOptions: {
+			show: {
+				resource: ['user'],
+				operation: ['getAll'],
+			},
+		},
+		default: {},
+		options: [
+			{
+				displayName: 'In Channel',
+				name: 'inChannel',
+				type: 'string',
+				default: '',
+				description: 'The ID of the channel to get users for',
+			},
+			{
+				displayName: 'In Team',
+				name: 'inTeam',
+				type: 'string',
+				default: '',
+				description: 'The ID of the team to get users for',
+			},
+			{
+				displayName: 'Not In Team',
+				name: 'notInTeam',
+				type: 'string',
+				default: '',
+				description: 'The ID of the team to exclude users for',
+			},
+			{
+				displayName: 'Not In Channel',
+				name: 'notInChannel',
+				type: 'string',
+				default: '',
+				description: 'The ID of the channel to exclude users for',
+			},
+			{
+				displayName: 'Sort',
+				name: 'sort',
+				type: 'options',
+				options: [
+					{
+						name: 'Created At',
+						value: 'createdAt',
+					},
+					{
+						name: 'Last Activity At',
+						value: 'lastActivityAt',
+					},
+					{
+						name: 'Status',
+						value: 'status',
+					},
+					{
+						name: 'Username',
+						value: 'username',
+					},
+				],
+				default: 'username',
+				description: 'The ID of the channel to exclude users for',
+			},
+		],
+	},
+];

packages/nodes-base/nodes/Mattermost/v1/actions/user/getAll/execute.ts

@@ -0,0 +1,111 @@
+import { snakeCase } from 'change-case';
+import type { IExecuteFunctions, IDataObject, INodeExecutionData } from 'n8n-workflow';
+import { NodeOperationError } from 'n8n-workflow';
+
+import { apiRequest, apiRequestAllItems } from '../../../transport';
+
+export async function getAll(
+	this: IExecuteFunctions,
+	index: number,
+): Promise<INodeExecutionData[]> {
+	const returnAll = this.getNodeParameter('returnAll', index);
+	const additionalFields = this.getNodeParameter('additionalFields', index);
+
+	const qs = {} as IDataObject;
+	const requestMethod = 'GET';
+	const endpoint = '/users';
+	const body = {} as IDataObject;
+
+	if (additionalFields.inTeam) {
+		qs.in_team = additionalFields.inTeam;
+	}
+
+	if (additionalFields.notInTeam) {
+		qs.not_in_team = additionalFields.notInTeam;
+	}
+
+	if (additionalFields.inChannel) {
+		qs.in_channel = additionalFields.inChannel;
+	}
+
+	if (additionalFields.notInChannel) {
+		qs.not_in_channel = additionalFields.notInChannel;
+	}
+
+	if (additionalFields.sort) {
+		qs.sort = snakeCase(additionalFields.sort as string);
+	}
+
+	const validRules = {
+		inTeam: ['last_activity_at', 'created_at', 'username'],
+		inChannel: ['status', 'username'],
+	};
+
+	if (additionalFields.sort) {
+		if (additionalFields.inTeam !== undefined || additionalFields.inChannel !== undefined) {
+			if (
+				additionalFields.inTeam !== undefined &&
+				!validRules.inTeam.includes(snakeCase(additionalFields.sort as string))
+			) {
+				throw new NodeOperationError(
+					this.getNode(),
+					`When In Team is set the only valid values for sorting are ${validRules.inTeam.join(
+						',',
+					)}`,
+					{ itemIndex: index },
+				);
+			}
+			if (
+				additionalFields.inChannel !== undefined &&
+				!validRules.inChannel.includes(snakeCase(additionalFields.sort as string))
+			) {
+				throw new NodeOperationError(
+					this.getNode(),
+					`When In Channel is set the only valid values for sorting are ${validRules.inChannel.join(
+						',',
+					)}`,
+					{ itemIndex: index },
+				);
+			}
+			if (additionalFields.inChannel === '' && additionalFields.sort !== 'username') {
+				throw new NodeOperationError(
+					this.getNode(),
+					'When sort is different than username In Channel must be set',
+					{ itemIndex: index },
+				);
+			}
+
+			if (additionalFields.inTeam === '' && additionalFields.sort !== 'username') {
+				throw new NodeOperationError(
+					this.getNode(),
+					'When sort is different than username In Team must be set',
+					{ itemIndex: index },
+				);
+			}
+		} else {
+			throw new NodeOperationError(
+				this.getNode(),
+				"When sort is defined either 'in team' or 'in channel' must be defined",
+				{ itemIndex: index },
+			);
+		}
+	}
+
+	if (additionalFields.sort === 'username') {
+		qs.sort = '';
+	}
+
+	if (!returnAll) {
+		qs.per_page = this.getNodeParameter('limit', index);
+	}
+
+	let responseData;
+
+	if (returnAll) {
+		responseData = await apiRequestAllItems.call(this, requestMethod, endpoint, body, qs);
+	} else {
+		responseData = await apiRequest.call(this, requestMethod, endpoint, body, qs);
+	}
+
+	return this.helpers.returnJsonArray(responseData as IDataObject[]);
+}

packages/nodes-base/nodes/Mattermost/v1/actions/user/getAll/index.ts

@@ -0,0 +1,4 @@
+import { userGetAllDescription as description } from './description';
+import { getAll as execute } from './execute';
+
+export { description, execute };

packages/nodes-base/nodes/Mattermost/v1/actions/user/getByEmail/description.ts

@@ -0,0 +1,19 @@
+import type { UserProperties } from '../../Interfaces';
+
+export const userGetByEmailDescription: UserProperties = [
+	{
+		displayName: 'Email',
+		name: 'email',
+		type: 'string',
+		placeholder: 'name@email.com',
+		required: true,
+		displayOptions: {
+			show: {
+				resource: ['user'],
+				operation: ['getByEmail'],
+			},
+		},
+		default: '',
+		description: "User's email",
+	},
+];

packages/nodes-base/nodes/Mattermost/v1/actions/user/getByEmail/execute.ts

@@ -0,0 +1,19 @@
+import type { IExecuteFunctions, IDataObject, INodeExecutionData } from 'n8n-workflow';
+
+import { apiRequest } from '../../../transport';
+
+export async function getByEmail(
+	this: IExecuteFunctions,
+	index: number,
+): Promise<INodeExecutionData[]> {
+	const email = this.getNodeParameter('email', index) as string;
+
+	const qs = {} as IDataObject;
+	const requestMethod = 'GET';
+	const endpoint = `users/email/${email}`;
+	const body = {} as IDataObject;
+
+	const responseData = await apiRequest.call(this, requestMethod, endpoint, body, qs);
+
+	return this.helpers.returnJsonArray(responseData as IDataObject[]);
+}

packages/nodes-base/nodes/Mattermost/v1/actions/user/getByEmail/index.ts

@@ -0,0 +1,4 @@
+import { userGetByEmailDescription as description } from './description';
+import { getByEmail as execute } from './execute';
+
+export { description, execute };

packages/nodes-base/nodes/Mattermost/v1/actions/user/getById/description.ts

@@ -0,0 +1,41 @@
+import type { UserProperties } from '../../Interfaces';
+
+export const userGetByIdDescription: UserProperties = [
+	{
+		displayName: 'User IDs',
+		name: 'userIds',
+		type: 'string',
+		required: true,
+		displayOptions: {
+			show: {
+				resource: ['user'],
+				operation: ['getById'],
+			},
+		},
+		default: '',
+		description: "User's ID",
+	},
+	{
+		displayName: 'Additional Fields',
+		name: 'additionalFields',
+		type: 'collection',
+		placeholder: 'Add Field',
+		displayOptions: {
+			show: {
+				resource: ['user'],
+				operation: ['getById'],
+			},
+		},
+		default: {},
+		options: [
+			{
+				displayName: 'Since',
+				name: 'since',
+				type: 'dateTime',
+				default: '',
+				description:
+					'Only return users that have been modified since the given Unix timestamp (in milliseconds)',
+			},
+		],
+	},
+];

packages/nodes-base/nodes/Mattermost/v1/actions/user/getById/execute.ts

@@ -0,0 +1,23 @@
+import type { IExecuteFunctions, IDataObject, INodeExecutionData } from 'n8n-workflow';
+
+import { apiRequest } from '../../../transport';
+
+export async function getById(
+	this: IExecuteFunctions,
+	index: number,
+): Promise<INodeExecutionData[]> {
+	const qs = {} as IDataObject;
+	const requestMethod = 'POST';
+	const endpoint = 'users/ids';
+	const userIds = (this.getNodeParameter('userIds', index) as string).split(',');
+	const additionalFields = this.getNodeParameter('additionalFields', index);
+	const body = userIds;
+
+	if (additionalFields.since) {
+		qs.since = new Date(additionalFields.since as string).getTime();
+	}
+
+	const responseData = await apiRequest.call(this, requestMethod, endpoint, body, qs);
+
+	return this.helpers.returnJsonArray(responseData as IDataObject[]);
+}

packages/nodes-base/nodes/Mattermost/v1/actions/user/getById/index.ts

@@ -0,0 +1,4 @@
+import { userGetByIdDescription as description } from './description';
+import { getById as execute } from './execute';
+
+export { description, execute };

packages/nodes-base/nodes/Mattermost/v1/actions/user/index.ts

@@ -0,0 +1,70 @@
+import type { INodeProperties } from 'n8n-workflow';
+
+import * as create from './create';
+import * as deactive from './deactive';
+import * as getAll from './getAll';
+import * as getByEmail from './getByEmail';
+import * as getById from './getById';
+import * as invite from './invite';
+
+export { create, deactive, getAll, getByEmail, getById, invite };
+
+export const descriptions: INodeProperties[] = [
+	{
+		displayName: 'Operation',
+		name: 'operation',
+		type: 'options',
+		noDataExpression: true,
+		displayOptions: {
+			show: {
+				resource: ['user'],
+			},
+		},
+		options: [
+			{
+				name: 'Create',
+				value: 'create',
+				description: 'Create a new user',
+				action: 'Create a user',
+			},
+			{
+				name: 'Deactive',
+				value: 'deactive',
+				description:
+					'Deactivates the user and revokes all its sessions by archiving its user object',
+				action: 'Deactivate a user',
+			},
+			{
+				name: 'Get By Email',
+				value: 'getByEmail',
+				description: 'Get a user by email',
+				action: 'Get a user by email',
+			},
+			{
+				name: 'Get By ID',
+				value: 'getById',
+				description: 'Get a user by ID',
+				action: 'Get a user by ID',
+			},
+			{
+				name: 'Get Many',
+				value: 'getAll',
+				description: 'Retrieve many users',
+				action: 'Get many users',
+			},
+			{
+				name: 'Invite',
+				value: 'invite',
+				description: 'Invite user to team',
+				action: 'Invite a user',
+			},
+		],
+		default: '',
+	},
+	...create.description,
+	...deactive.description,
+	...getAll.description,
+	...getByEmail.description,
+	...getById.description,
+	...invite.description,
+];

packages/nodes-base/nodes/Mattermost/v1/actions/user/invite/description.ts

@@ -0,0 +1,36 @@
+import type { UserProperties } from '../../Interfaces';
+
+export const userInviteDescription: UserProperties = [
+	{
+		displayName: 'Team Name or ID',
+		name: 'teamId',
+		type: 'options',
+		description:
+			'Choose from the list, or specify an ID using an <a href="https://docs.n8n.io/code/expressions/">expression</a>',
+		typeOptions: {
+			loadOptionsMethod: 'getTeams',
+		},
+		required: true,
+		displayOptions: {
+			show: {
+				resource: ['user'],
+				operation: ['invite'],
+			},
+		},
+		default: '',
+	},
+	{
+		displayName: 'Emails',
+		name: 'emails',
+		type: 'string',
+		required: true,
+		displayOptions: {
+			show: {
+				resource: ['user'],
+				operation: ['invite'],
+			},
+		},
+		default: '',
+		description: "User's email. Multiple emails can be set separated by comma.",
+	},
+];

packages/nodes-base/nodes/Mattermost/v1/actions/user/invite/execute.ts

@@ -0,0 +1,21 @@
+import type { IExecuteFunctions, IDataObject, INodeExecutionData } from 'n8n-workflow';
+
+import { apiRequest } from '../../../transport';
+
+export async function invite(
+	this: IExecuteFunctions,
+	index: number,
+): Promise<INodeExecutionData[]> {
+	const teamId = this.getNodeParameter('teamId', index) as string;
+
+	const emails = (this.getNodeParameter('emails', index) as string).split(',');
+
+	const qs = {} as IDataObject;
+	const requestMethod = 'POST';
+	const endpoint = `teams/${teamId}/invite/email`;
+	const body = emails;
+
+	const responseData = await apiRequest.call(this, requestMethod, endpoint, body, qs);
+
+	return this.helpers.returnJsonArray(responseData as IDataObject[]);
+}

packages/nodes-base/nodes/Mattermost/v1/actions/user/invite/index.ts

@@ -0,0 +1,4 @@
+import { userInviteDescription as description } from './description';
+import { invite as execute } from './execute';
+
+export { description, execute };

packages/nodes-base/nodes/Mattermost/v1/actions/versionDescription.ts

@@ -0,0 +1,59 @@
+/* eslint-disable n8n-nodes-base/node-filename-against-convention */
+import { NodeConnectionTypes, type INodeTypeDescription } from 'n8n-workflow';
+
+import * as channel from './channel';
+import * as message from './message';
+import * as reaction from './reaction';
+import * as user from './user';
+
+export const versionDescription: INodeTypeDescription = {
+	displayName: 'Mattermost',
+	name: 'mattermost',
+	icon: 'file:mattermost.svg',
+	group: ['output'],
+	version: 1,
+	subtitle: '={{$parameter["operation"] + ": " + $parameter["resource"]}}',
+	description: 'Sends data to Mattermost',
+	defaults: {
+		name: 'Mattermost',
+	},
+	inputs: [NodeConnectionTypes.Main],
+	outputs: [NodeConnectionTypes.Main],
+	credentials: [
+		{
+			name: 'mattermostApi',
+			required: true,
+		},
+	],
+	properties: [
+		{
+			displayName: 'Resource',
+			name: 'resource',
+			type: 'options',
+			noDataExpression: true,
+			options: [
+				{
+					name: 'Channel',
+					value: 'channel',
+				},
+				{
+					name: 'Message',
+					value: 'message',
+				},
+				{
+					name: 'Reaction',
+					value: 'reaction',
+				},
+				{
+					name: 'User',
+					value: 'user',
+				},
+			],
+			default: 'message',
+		},
+		...channel.descriptions,
+		...message.descriptions,
+		...reaction.descriptions,
+		...user.descriptions,
+	],
+};

packages/nodes-base/nodes/Mattermost/v1/methods/index.ts

@@ -0,0 +1 @@
+export * as loadOptions from './loadOptions';

packages/nodes-base/nodes/Mattermost/v1/methods/loadOptions.ts

@@ -0,0 +1,159 @@
+import type { IDataObject, ILoadOptionsFunctions, INodePropertyOptions } from 'n8n-workflow';
+import { NodeOperationError } from 'n8n-workflow';
+
+import { apiRequestAllItems } from '../transport';
+
+// Get all the available channels
+export async function getChannels(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
+	const endpoint = 'channels';
+	const responseData = await apiRequestAllItems.call(this, 'GET', endpoint, {});
+
+	if (responseData === undefined) {
+		throw new NodeOperationError(this.getNode(), 'No data got returned');
+	}
+
+	const returnData: INodePropertyOptions[] = [];
+	let name: string;
+	for (const data of responseData) {
+		if (data.delete_at !== 0 || !data.display_name || !data.name) {
+			continue;
+		}
+
+		name = `${data.team_display_name} - ${data.display_name || data.name} (${
+			data.type === 'O' ? 'public' : 'private'
+		})`;
+
+		returnData.push({
+			name,
+			value: data.id as string,
+		});
+	}
+
+	returnData.sort((a, b) => {
+		if (a.name < b.name) {
+			return -1;
+		}
+		if (a.name > b.name) {
+			return 1;
+		}
+		return 0;
+	});
+
+	return returnData;
+}
+
+// Get all the channels in a team
+export async function getChannelsInTeam(
+	this: ILoadOptionsFunctions,
+): Promise<INodePropertyOptions[]> {
+	const teamId = this.getCurrentNodeParameter('teamId');
+	const endpoint = `users/me/teams/${teamId}/channels`;
+	const responseData = await apiRequestAllItems.call(this, 'GET', endpoint, {});
+
+	if (responseData === undefined) {
+		throw new NodeOperationError(this.getNode(), 'No data got returned');
+	}
+
+	const returnData: INodePropertyOptions[] = [];
+	let name: string;
+	for (const data of responseData) {
+		if (data.delete_at !== 0 || !data.display_name || !data.name) {
+			continue;
+		}
+
+		const channelTypes: IDataObject = {
+			D: 'direct',
+			G: 'group',
+			O: 'public',
+			P: 'private',
+		};
+
+		name = `${data.display_name} (${channelTypes[data.type as string]})`;
+
+		returnData.push({
+			name,
+			value: data.id as string,
+		});
+	}
+
+	returnData.sort((a, b) => {
+		if (a.name < b.name) {
+			return -1;
+		}
+		if (a.name > b.name) {
+			return 1;
+		}
+		return 0;
+	});
+
+	return returnData;
+}
+
+export async function getTeams(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
+	const endpoint = 'users/me/teams';
+	const responseData = await apiRequestAllItems.call(this, 'GET', endpoint, {});
+
+	if (responseData === undefined) {
+		throw new NodeOperationError(this.getNode(), 'No data got returned');
+	}
+
+	const returnData: INodePropertyOptions[] = [];
+	let name: string;
+	for (const data of responseData) {
+		if (data.delete_at !== 0) {
+			continue;
+		}
+
+		name = `${data.display_name} (${data.type === 'O' ? 'public' : 'private'})`;
+
+		returnData.push({
+			name,
+			value: data.id as string,
+		});
+	}
+
+	returnData.sort((a, b) => {
+		if (a.name < b.name) {
+			return -1;
+		}
+		if (a.name > b.name) {
+			return 1;
+		}
+		return 0;
+	});
+
+	return returnData;
+}
+
+export async function getUsers(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
+	const endpoint = 'users';
+	const responseData = await apiRequestAllItems.call(this, 'GET', endpoint, {});
+
+	if (responseData === undefined) {
+		throw new NodeOperationError(this.getNode(), 'No data got returned');
+	}
+
+	const returnData: INodePropertyOptions[] = [];
+	for (const data of responseData) {
+		if (data.delete_at !== 0) {
+			continue;
+		}
+
+		returnData.push({
+			name: data.username as string,
+			value: data.id as string,
+		});
+	}
+
+	returnData.sort((a, b) => {
+		if (a.name < b.name) {
+			return -1;
+		}
+		if (a.name > b.name) {
+			return 1;
+		}
+		return 0;
+	});
+
+	return returnData;
+}

packages/nodes-base/nodes/Mattermost/v1/transport/index.ts

@@ -0,0 +1,58 @@
+import type {
+	IExecuteFunctions,
+	IHookFunctions,
+	ILoadOptionsFunctions,
+	GenericValue,
+	IDataObject,
+	IHttpRequestMethods,
+	IHttpRequestOptions,
+} from 'n8n-workflow';
+
+/**
+ * Make an API request to Mattermost
+ */
+export async function apiRequest(
+	this: IHookFunctions | IExecuteFunctions | ILoadOptionsFunctions,
+	method: IHttpRequestMethods,
+	endpoint: string,
+	body: IDataObject | GenericValue | GenericValue[] = {},
+	query: IDataObject = {},
+) {
+	const credentials = await this.getCredentials('mattermostApi');
+	const baseUrl = (credentials.baseUrl as string).replace(/\/$/, '');
+
+	const options: IHttpRequestOptions = {
+		method,
+		body,
+		qs: query,
+		url: `${baseUrl}/api/v4/${endpoint}`,
+		headers: {
+			'content-type': 'application/json; charset=utf-8',
+		},
+		skipSslCertificateValidation: credentials.allowUnauthorizedCerts as boolean,
+	};
+
+	return await this.helpers.httpRequestWithAuthentication.call(this, 'mattermostApi', options);
+}
+
+export async function apiRequestAllItems(
+	this: IExecuteFunctions | ILoadOptionsFunctions,
+	method: 'GET' | 'POST' | 'PUT' | 'DELETE' | 'HEAD',
+	endpoint: string,
+	body: IDataObject = {},
+	query: IDataObject = {},
+) {
+	const returnData: IDataObject[] = [];
+
+	let responseData;
+	query.page = 0;
+	query.per_page = 100;
+
+	do {
+		responseData = await apiRequest.call(this, method, endpoint, body, query);
+		query.page++;
+		returnData.push.apply(returnData, responseData as IDataObject[]);
+	} while (responseData.length !== 0);
+
+	return returnData;
+}