mirror of
https://github.com/n8n-io/n8n.git
synced 2024-12-24 20:24:05 -08:00
415 lines
10 KiB
TypeScript
415 lines
10 KiB
TypeScript
import type {
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INodeListSearchItems,
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ILoadOptionsFunctions,
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INodeListSearchResult,
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INodePropertyOptions,
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IHookFunctions,
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IWebhookFunctions,
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IDataObject,
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INodeType,
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INodeTypeDescription,
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IWebhookResponseData,
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IBinaryKeyData,
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} from 'n8n-workflow';
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import { slackApiRequestAllItems } from './V2/GenericFunctions';
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import { downloadFile, getChannelInfo, getUserInfo } from './SlackTriggerHelpers';
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export class SlackTrigger implements INodeType {
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description: INodeTypeDescription = {
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displayName: 'Slack Trigger',
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name: 'slackTrigger',
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icon: 'file:slack.svg',
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group: ['trigger'],
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version: 1,
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subtitle: '={{$parameter["eventFilter"].join(", ")}}',
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description: 'Handle Slack events via webhooks',
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defaults: {
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name: 'Slack Trigger',
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},
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inputs: [],
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outputs: ['main'],
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webhooks: [
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{
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name: 'default',
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httpMethod: 'POST',
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responseMode: 'onReceived',
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path: 'webhook',
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},
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],
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credentials: [
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{
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name: 'slackApi',
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required: true,
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},
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],
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properties: [
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{
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displayName: 'Authentication',
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name: 'authentication',
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type: 'hidden',
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default: 'accessToken',
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},
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{
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displayName:
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'Set up a webhook in your Slack app to enable this node. <a href="https://docs.n8n.io/integrations/builtin/trigger-nodes/n8n-nodes-base.slacktrigger/#configure-a-webhook-in-slack" target="_blank">More info</a>',
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name: 'notice',
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type: 'notice',
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default: '',
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},
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{
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displayName: 'Trigger On',
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name: 'trigger',
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type: 'multiOptions',
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options: [
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{
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name: 'Any Event',
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value: 'any_event',
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description: 'Triggers on any event',
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},
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{
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name: 'Bot / App Mention',
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value: 'app_mention',
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description: 'When your bot or app is mentioned in a channel the app is added to',
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},
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{
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name: 'File Made Public',
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value: 'file_public',
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description: 'When a file is made public',
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},
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{
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name: 'File Shared',
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value: 'file_share',
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description: 'When a file is shared in a channel the app is added to',
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},
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{
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name: 'New Message Posted to Channel',
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value: 'message',
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description: 'When a message is posted to a channel the app is added to',
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},
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{
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name: 'New Public Channel Created',
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value: 'channel_created',
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description: 'When a new public channel is created',
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},
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{
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name: 'New User',
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value: 'team_join',
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description: 'When a new user is added to Slack',
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},
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{
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name: 'Reaction Added',
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value: 'reaction_added',
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description: 'When a reaction is added to a message the app is added to',
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},
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],
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default: [],
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},
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{
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displayName: 'Watch Whole Workspace',
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name: 'watchWorkspace',
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type: 'boolean',
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default: false,
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description:
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'Whether to watch for the event in the whole workspace, rather than a specific channel',
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displayOptions: {
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show: {
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trigger: ['any_event', 'message', 'reaction_added', 'file_share', 'app_mention'],
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},
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},
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},
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{
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displayName:
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'This will use one execution for every event in any channel your bot is in, use with caution',
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name: 'notice',
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type: 'notice',
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default: '',
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displayOptions: {
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show: {
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trigger: ['any_event', 'message', 'reaction_added', 'file_share', 'app_mention'],
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watchWorkspace: [true],
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},
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},
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},
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{
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displayName: 'Channel to Watch',
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name: 'channelId',
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type: 'resourceLocator',
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required: true,
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default: { mode: 'list', value: '' },
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placeholder: 'Select a channel...',
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description:
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'The Slack channel to listen to events from. Applies to events: Bot/App mention, File Shared, New Message Posted on Channel, Reaction Added.',
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displayOptions: {
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show: {
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watchWorkspace: [false],
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},
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},
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modes: [
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{
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displayName: 'From List',
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name: 'list',
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type: 'list',
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placeholder: 'Select a channel...',
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typeOptions: {
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searchListMethod: 'getChannels',
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searchable: true,
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},
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},
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{
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displayName: 'By ID',
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name: 'id',
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type: 'string',
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validation: [
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{
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type: 'regex',
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properties: {
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regex: '[a-zA-Z0-9]{2,}',
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errorMessage: 'Not a valid Slack Channel ID',
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},
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},
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],
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placeholder: 'C0122KQ70S7E',
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},
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{
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displayName: 'By URL',
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name: 'url',
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type: 'string',
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placeholder: 'https://app.slack.com/client/TS9594PZK/B0556F47Z3A',
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validation: [
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{
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type: 'regex',
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properties: {
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regex: 'http(s)?://app.slack.com/client/.*/([a-zA-Z0-9]{2,})',
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errorMessage: 'Not a valid Slack Channel URL',
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},
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},
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],
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extractValue: {
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type: 'regex',
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regex: 'https://app.slack.com/client/.*/([a-zA-Z0-9]{2,})',
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},
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},
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],
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},
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{
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displayName: 'Download Files',
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name: 'downloadFiles',
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type: 'boolean',
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default: false,
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description: 'Whether to download the files and add it to the output',
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displayOptions: {
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show: {
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trigger: ['any_event', 'file_share'],
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},
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},
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},
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{
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displayName: 'Options',
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name: 'options',
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type: 'collection',
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placeholder: 'Add Field',
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default: {},
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options: [
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{
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displayName: 'Resolve IDs',
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name: 'resolveIds',
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type: 'boolean',
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default: false,
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description: 'Whether to resolve the IDs to their respective names and return them',
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},
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{
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displayName: 'Usernames or IDs to Ignore',
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name: 'userIds',
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type: 'multiOptions',
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typeOptions: {
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loadOptionsMethod: 'getUsers',
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},
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default: [],
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description:
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'A comma-separated string of encoded user IDs. Choose from the list, or specify IDs using an <a href="https://docs.n8n.io/code-examples/expressions/">expression</a>.',
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},
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],
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},
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],
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};
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methods = {
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listSearch: {
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async getChannels(
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this: ILoadOptionsFunctions,
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filter?: string,
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): Promise<INodeListSearchResult> {
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const qs = { types: 'public_channel,private_channel' };
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const channels = (await slackApiRequestAllItems.call(
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this,
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'channels',
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'GET',
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'/conversations.list',
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{},
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qs,
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)) as Array<{ id: string; name: string }>;
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const results: INodeListSearchItems[] = channels
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.map((c) => ({
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name: c.name,
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value: c.id,
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}))
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.filter(
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(c) =>
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!filter ||
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c.name.toLowerCase().includes(filter.toLowerCase()) ||
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c.value?.toString() === filter,
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)
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.sort((a, b) => {
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if (a.name.toLowerCase() < b.name.toLowerCase()) return -1;
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if (a.name.toLowerCase() > b.name.toLowerCase()) return 1;
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return 0;
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});
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return { results };
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},
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},
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loadOptions: {
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async getUsers(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
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const returnData: INodePropertyOptions[] = [];
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const users = (await slackApiRequestAllItems.call(
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this,
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'members',
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'GET',
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'/users.list',
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)) as Array<{ id: string; name: string }>;
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for (const user of users) {
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returnData.push({
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name: user.name,
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value: user.id,
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});
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}
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returnData.sort((a, b) => {
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if (a.name < b.name) {
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return -1;
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}
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if (a.name > b.name) {
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return 1;
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}
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return 0;
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});
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return returnData;
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},
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},
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};
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webhookMethods = {
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default: {
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async checkExists(this: IHookFunctions): Promise<boolean> {
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return true;
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},
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async create(this: IHookFunctions): Promise<boolean> {
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return true;
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},
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async delete(this: IHookFunctions): Promise<boolean> {
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return true;
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},
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},
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};
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async webhook(this: IWebhookFunctions): Promise<IWebhookResponseData> {
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const filters = this.getNodeParameter('trigger', []) as string[];
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const req = this.getRequestObject();
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const options = this.getNodeParameter('options', {}) as IDataObject;
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const binaryData: IBinaryKeyData = {};
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const watchWorkspace = this.getNodeParameter('watchWorkspace', false) as boolean;
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// Check if the request is a challenge request
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if (req.body.type === 'url_verification') {
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const res = this.getResponseObject();
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res.status(200).json({ challenge: req.body.challenge }).end();
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return {
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noWebhookResponse: true,
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};
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}
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// Check if the event type is in the filters
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const eventType = req.body.event.type as string;
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if (
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!filters.includes('file_share') &&
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!filters.includes('any_event') &&
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!filters.includes(eventType)
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) {
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return {};
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}
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const eventChannel = req.body.event.channel ?? req.body.event.item.channel;
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// Check for single channel
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if (!watchWorkspace) {
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if (
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eventChannel !== (this.getNodeParameter('channelId', {}, { extractValue: true }) as string)
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) {
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return {};
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}
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}
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// Check if user should be ignored
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if (options.userIds) {
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const userIds = options.userIds as string[];
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if (userIds.includes(req.body.event.user)) {
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return {};
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}
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}
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if (options.resolveIds) {
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if (req.body.event.user) {
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if (req.body.event.type === 'reaction_added') {
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req.body.event.user_resolved = await getUserInfo.call(this, req.body.event.user);
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req.body.event.item_user_resolved = await getUserInfo.call(
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this,
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req.body.event.item_user,
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);
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} else {
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req.body.event.user_resolved = await getUserInfo.call(this, req.body.event.user);
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}
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}
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if (eventChannel) {
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const channel = await getChannelInfo.call(this, eventChannel);
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const channelResolved = channel;
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req.body.event.channel_resolved = channelResolved;
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}
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}
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if (
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req.body.event.subtype === 'file_share' &&
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(filters.includes('file_share') || filters.includes('any_event'))
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) {
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if (this.getNodeParameter('downloadFiles', false) as boolean) {
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for (let i = 0; i < req.body.event.files.length; i++) {
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const file = (await downloadFile.call(
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this,
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req.body.event.files[i].url_private_download,
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)) as Buffer;
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binaryData[`file_${i}`] = await this.helpers.prepareBinaryData(
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file,
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req.body.event.files[i].name,
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req.body.event.files[i].mimetype,
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);
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}
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}
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}
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return {
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workflowData: [
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[
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{
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json: req.body.event,
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binary: Object.keys(binaryData).length ? binaryData : undefined,
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},
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],
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],
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};
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}
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}
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