← Telegram Bot + Browserless integrations

Generate PDF from HTML String with Browserless API on New Bot Command Received (Instant) from Telegram Bot API

Pipedream makes it easy to connect APIs for Browserless, Telegram Bot and 1,700+ other apps remarkably fast.

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New Bot Command Received (Instant) from the Telegram Bot API
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Generate PDF from HTML String with the Browserless API
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Getting Started

This integration creates a workflow with a Telegram Bot trigger and Browserless action. When you configure and deploy the workflow, it will run on Pipedream's servers 24x7 for free.

  1. Select this integration
  2. Configure the New Bot Command Received (Instant) trigger
    1. Connect your Telegram Bot account
    2. Select one or more Commands
  3. Configure the Generate PDF from HTML String action
    1. Connect your Browserless account
    2. Configure HTML String
  4. Deploy the workflow
  5. Send a test event to validate your setup
  6. Turn on the trigger

Details

This integration uses pre-built, source-available components from Pipedream's GitHub repo. These components are developed by Pipedream and the community, and verified and maintained by Pipedream.

To contribute an update to an existing component or create a new component, create a PR on GitHub. If you're new to Pipedream component development, you can start with quickstarts for trigger span and action development, and then review the component API reference.

Trigger

Description:Emit new event each time a Telegram Bot command is received.
Version:0.0.5
Key:telegram_bot_api-new-bot-command-received

New Bot Command Received (Instant) Overview

Telegram Bots can respond to Slash commands. For instance, you can add a /hi or /help command to your Telegram bot to help users learn how to use your bot.

Trigger Code

import base from "../common/webhooks.mjs";
import sampleEmit from "./test-event.mjs";

export default {
  ...base,
  key: "telegram_bot_api-new-bot-command-received",
  name: "New Bot Command Received (Instant)",
  description: "Emit new event each time a Telegram Bot command is received.",
  version: "0.0.5",
  type: "source",
  dedupe: "unique",
  props: {
    ...base.props,
    commands: {
      propDefinition: [
        base.props.telegramBotApi,
        "commands",
      ],
    },
  },
  methods: {
    ...base.methods,
    getMeta(event, message) {
      return {
        id: event.update_id,
        summary: message.text,
        ts: new Date(message.edit_date ?? message.date),
      };
    },
    getEventTypes() {
      return [
        "message",
        "edited_message",
      ];
    },
    processEvent(event) {
      const message = event.edited_message ?? event.message;

      if (!message?.text) {
        console.log("Skipping message that isn’t a bot command");

        return;
      }

      const command = message.text.split(" ")[0];

      if (typeof this.commands === "string") {
        this.commands = JSON.parse(this.commands);
      }

      const foundCmd = this.commands.some((cmd) => command.includes(cmd));
      if (!foundCmd) {
        return;
      }

      this.$emit(event, this.getMeta(event, message));
    },
  },
  sampleEmit,
};

Trigger Configuration

This component may be configured based on the props defined in the component code. Pipedream automatically prompts for input values in the UI and CLI.
LabelPropTypeDescription
Telegram BottelegramBotApiappThis component uses the Telegram Bot app.
N/Adb$.service.dbThis component uses $.service.db to maintain state between executions.
N/Ahttp$.interface.httpThis component uses $.interface.http to generate a unique URL when the component is first instantiated. Each request to the URL will trigger the run() method of the component.
Commandscommandsstring[]Select a value from the drop down menu.

Trigger Authentication

Telegram Bot uses API keys for authentication. When you connect your Telegram Bot account, Pipedream securely stores the keys so you can easily authenticate to Telegram Bot APIs in both code and no-code steps.

To use the Telegram Bot API, you must first create a new bot by chatting with the BotFather.


Telegram Bot how to

After you create your bot, copy the bot token and add it below.

About Telegram Bot

Telegram, is a cloud-based, cross-platform, encrypted instant messaging (IM) service.

Action

Description:See https://docs.browserless.io/docs/pdf.html
Version:0.4.1
Key:browserless-convert-html-to-pdf

Browserless Overview

Browserless allows you to build websites and applications that can be used
without a web browser. This means that you can create apps that can be used
offline, or that can be used on devices that don't have a web browser
installed.

Some examples of things that you can build using Browserless are:

  • A website that can be used without a web browser
  • An app that can be used offline
  • A app that can be used on devices that don't have a web browser installed

Action Code

// legacy_hash_id: a_B0ip1E
import { axios } from "@pipedream/platform";

export default {
  key: "browserless-convert-html-to-pdf",
  name: "Generate PDF from HTML String",
  description: "See https://docs.browserless.io/docs/pdf.html",
  version: "0.4.1",
  type: "action",
  props: {
    browserless: {
      type: "app",
      app: "browserless",
    },
    html: {
      type: "string",
      label: "HTML String",
      description: "HTML to render as a PDF",
    },
  },
  async run({ $ }) {
    const { html } = this;

    const data = await axios($, {
      method: "POST",
      url: `https://chrome.browserless.io/pdf?token=${this.browserless.$auth.api_key}`,
      headers: {
        "Cache-Control": "no-cache",
        "Content-Type": "application/json",
      },
      responseType: "arraybuffer",
      data: {
        html,
        options: {
          displayHeaderFooter: true,
          printBackground: false,
          format: "Letter",
        },
      },
    });

    $.export("pdf", Buffer.from(data, "binary").toString("base64"));
  },
};

Action Configuration

This component may be configured based on the props defined in the component code. Pipedream automatically prompts for input values in the UI.

LabelPropTypeDescription
BrowserlessbrowserlessappThis component uses the Browserless app.
HTML Stringhtmlstring

HTML to render as a PDF

Action Authentication

Browserless uses API keys for authentication. When you connect your Browserless account, Pipedream securely stores the keys so you can easily authenticate to Browserless APIs in both code and no-code steps.

Sign-up for a browserless account, it will create a unique token that allows service interaction.

About Browserless

Browserless is a service that allows you to run headless Chrome instances in the cloud.

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