n8n/packages/nodes-base/nodes/Telegram/TelegramTrigger.node.ts

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import {
IHookFunctions,
IWebhookFunctions,
} from 'n8n-core';
import {
INodeTypeDescription,
INodeType,
IWebhookResponseData,
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} from 'n8n-workflow';
import {
apiRequest,
} from './GenericFunctions';
export class TelegramTrigger implements INodeType {
description: INodeTypeDescription = {
displayName: 'Telegram Trigger',
name: 'telegramTrigger',
icon: 'file:telegram.png',
group: ['trigger'],
version: 1,
subtitle: '=Updates: {{$parameter["updates"].join(", ")}}',
description: 'Starts the workflow on a Telegram update.',
defaults: {
name: 'Telegram Trigger',
color: '#0088cc',
},
inputs: [],
outputs: ['main'],
credentials: [
{
name: 'telegramApi',
required: true,
}
],
webhooks: [
{
name: 'default',
httpMethod: 'POST',
responseMode: 'onReceived',
path: 'webhook',
},
],
properties: [
{
displayName: 'Updates',
name: 'updates',
type: 'multiOptions',
options: [
{
name: '*',
value: '*',
description: 'All updates.',
},
{
name: 'message',
value: 'message',
description: 'Trigger on new incoming message of any kind — text, photo, sticker, etc..',
},
{
name: 'edited_message',
value: 'edited_message',
description: 'Trigger on new version of a channel post that is known to the bot and was edited.',
},
{
name: 'channel_post',
value: 'channel_post',
description: 'Trigger on new incoming channel post of any kind — text, photo, sticker, etc..',
},
{
name: 'edited_channel_post',
value: 'edited_channel_post',
description: 'Trigger on new version of a channel post that is known to the bot and was edited.',
},
{
name: 'inline_query',
value: 'inline_query',
description: 'Trigger on new incoming inline query.',
},
{
name: 'callback_query',
value: 'callback_query',
description: 'Trigger on new incoming callback query.',
},
{
name: 'shipping_query',
value: 'shipping_query',
description: 'Trigger on new incoming shipping query. Only for invoices with flexible price.',
},
{
name: 'pre_checkout_query',
value: 'pre_checkout_query',
description: 'Trigger on new incoming pre-checkout query. Contains full information about checkout.',
},
{
name: 'poll',
value: 'poll',
description: 'Trigger on new poll state. Bots receive only updates about stopped polls and polls, which are sent by the bot.',
},
],
required: true,
default: [],
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description: 'The update types to listen to.',
},
],
};
// @ts-ignore (because of request)
webhookMethods = {
default: {
async checkExists(this: IHookFunctions): Promise<boolean> {
return false;
},
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async create(this: IHookFunctions): Promise<boolean> {
const webhookUrl = this.getNodeWebhookUrl('default');
let allowedUpdates = this.getNodeParameter('updates') as string[];
if (allowedUpdates.includes('*')) {
allowedUpdates = [];
}
const endpoint = 'setWebhook';
const body = {
url: webhookUrl,
allowed_updates: allowedUpdates,
};
await apiRequest.call(this, 'POST', endpoint, body);
return true;
},
async delete(this: IHookFunctions): Promise<boolean> {
const endpoint = 'deleteWebhook';
const body = {};
try {
await apiRequest.call(this, 'POST', endpoint, body);
} catch (e) {
return false;
}
return true;
},
},
};
async webhook(this: IWebhookFunctions): Promise<IWebhookResponseData> {
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const bodyData = this.getBodyData();
return {
workflowData: [
this.helpers.returnJsonArray([bodyData])
],
};
}
}