Generate PDF with HTML 2 PDF API on New Message in Channel from Discord Bot API

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New Message in Channel from the Discord Bot API

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Generate PDF with the HTML 2 PDF API

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Getting Started#

This integration creates a workflow with a Discord Bot trigger and HTML 2 PDF action. When you configure and deploy the workflow, it will run on Pipedream's servers 24x7 for free.

Select this integration
Configure the New Message in Channel trigger
1. Connect your Discord Bot account
2. Select a Guild
3. Select one or more Channels
4. Optional- Configure Emit messages as a single event
5. Configure timer
Configure the Generate PDF action
1. Connect your HTML 2 PDF account
2. Optional- Configure URL
3. Optional- Configure HTML
4. Optional- Configure Header
5. Optional- Configure Footer
6. Optional- Configure Page Offset
7. Optional- Select a Page Size
8. Optional- Select a Orientation
9. Optional- Configure Width
10. Optional- Configure Height
11. Optional- Configure Top Margin
12. Optional- Configure Bottom Margin
13. Optional- Configure Left
14. Optional- Configure Right
15. Optional- Select a Unit
16. Optional- Select a CSS Media Type
17. Optional- Configure Optimize Layout
18. Optional- Configure Lazy Load
19. Optional- Configure Wait Time
20. Optional- Configure CSS
Deploy the workflow
Send a test event to validate your setup
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#

New Message in Channel on Discord Bot

Description:Emit new event for each message posted to one or more channels

Version:0.0.18

Key:discord_bot-new-message-in-channel

View on GitHub

Discord Bot Overview#

The Discord Bot API unlocks the power to interact with Discord users and channels programmatically, making it possible to automate messages, manage servers, and integrate with other services. With Pipedream's serverless platform, you can create complex workflows that respond to events in Discord, process data, and trigger actions in other apps. This opens up opportunities for community engagement, content moderation, analytics, and more, without the overhead of managing infrastructure.

Trigger Code#

import { DEFAULT_POLLING_SOURCE_TIMER_INTERVAL } from "@pipedream/platform";
import maxBy from "lodash.maxby";
import common from "../common.mjs";
import sampleEmit from "./test-event.mjs";

const { discord } = common.props;

export default {
  ...common,
  key: "discord_bot-new-message-in-channel",
  name: "New Message in Channel",
  description: "Emit new event for each message posted to one or more channels",
  type: "source",
  version: "0.0.18",

  dedupe: "unique", // Dedupe events based on the Discord message ID
  props: {
    ...common.props,
    db: "$.service.db",
    channels: {
      type: "string[]",
      label: "Channels",
      description: "The channels you'd like to watch for new messages",
      propDefinition: [
        discord,
        "channelId",
        ({ guildId }) => ({
          guildId,
        }),
      ],
    },
    emitEventsInBatch: {
      type: "boolean",
      label: "Emit messages as a single event",
      description:
        "If `true`, all messages are emitted as an array, within a single Pipedream event. Defaults to `false`, emitting each Discord message as its own event in Pipedream",
      optional: true,
      default: false,
    },
    timer: {
      type: "$.interface.timer",
      default: {
        intervalSeconds: DEFAULT_POLLING_SOURCE_TIMER_INTERVAL,
      },
    },
  },
  async run({ $ }) {
    // We store a cursor to the last message ID
    let lastMessageIDs = this._getLastMessageIDs();

    // If this is our first time running this source,
    // get the last N messages, emit them, and checkpoint
    for (const channelId of this.channels) {
      let lastMessageID;
      let messages = [];

      if (!lastMessageID) {
        messages = await this.discord.getMessages({
          $,
          channelId,
          params: {
            limit: 100,
          },
        });

        lastMessageID = messages.length
          ? maxBy(messages, (message) => message.id).id
          : 1;

      } else {
        let newMessages = [];

        do {
          newMessages = await this.discord.getMessages({
            $,
            channelId,
            params: {
              after: lastMessageIDs[channelId],
            },
          });

          messages = messages.concat(newMessages);

          lastMessageID = newMessages.length
            ? maxBy(newMessages, (message) => message.id).id
            : lastMessageIDs[channelId];

        } while (newMessages.length);
      }

      // Set the new high water mark for the last message ID
      // for this channel
      lastMessageIDs[channelId] = lastMessageID;

      if (!messages.length) {
        console.log(`No new messages in channel ${channelId}`);
        return;
      }

      console.log(`${messages.length} new messages in channel ${channelId}`);

      // Batched emits do not take advantage of the built-in deduper
      if (this.emitEventsInBatch) {
        const suffixChar =
          messages.length > 1
            ? "s"
            : "";

        this.$emit(messages, {
          summary: `${messages.length} new message${suffixChar}`,
          id: lastMessageID,
        });

      } else {
        messages.forEach((message) => {
          this.$emit(message, {
            summary: message.content,
            id: message.id, // dedupes events based on this ID
          });
        });
      }
    }

    // Set the last message ID for the next run
    this._setLastMessageIDs(lastMessageIDs);
  },
  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.

Label	Prop	Type	Description
Discord Bot	`discord`	`app`	This component uses the Discord Bot app.
Guild	`guildId`	`string`	Select a value from the drop down menu.
N/A	`db`	`$.service.db`	This component uses `$.service.db` to maintain state between executions.
Channels	`channels`	`string[]`	Select a value from the drop down menu.
Emit messages as a single event	`emitEventsInBatch`	`boolean`	If `true`, all messages are emitted as an array, within a single Pipedream event. Defaults to `false`, emitting each Discord message as its own event in Pipedream
	`timer`	`$.interface.timer`

Trigger Authentication#

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

This app allows you to use the Discord API using your own Discord bot. If you don't want to use a custom bot, and you just need to use the Discord API, exit this screen and use the Discord app, instead.

If you want to use your own Discord bot, but haven't created one yet, see these instructions or watch this video. You'll need to add this bot to your server(s) to make successful API requests.

Once you've created your bot, you'll find the Bot token within the Bot section of your app. Enter that token below.

About Discord Bot#

Use this app to interact with the Discord API using a bot in your account

Action#

Generate PDF on HTML 2 PDF

Description:Creates a PDF from a URL or HTML string. [See the documentation](https://www.html2pdf.co.uk/api-documentation)

Version:0.0.1

Key:html_2_pdf-generate-pdf

View on GitHub

HTML 2 PDF Overview#

The HTML 2 PDF API allows you to convert HTML documents to PDFs. In Pipedream, you can integrate this API into workflows to automate document generation tasks. This can be incredibly useful for generating reports, invoices, or any other document where you start with HTML and need a PDF output. You can trigger these conversions with various events – like a new form submission, a scheduled trigger, or even updates in a database.

Action Code#

import { ConfigurationError } from "@pipedream/platform";
import fs from "fs";
import {
  PAGE_SIZE_OPTIONS, UNIT_OPTIONS,
} from "../../common/constants.mjs";
import html2Pdf from "../../html_2_pdf.app.mjs";

export default {
  key: "html_2_pdf-generate-pdf",
  name: "Generate PDF",
  description: "Creates a PDF from a URL or HTML string. [See the documentation](https://www.html2pdf.co.uk/api-documentation)",
  version: "0.0.1",
  type: "action",
  props: {
    html2Pdf,
    url: {
      type: "string",
      label: "URL",
      description: "The URL you want to convert to PDF.",
      optional: true,
    },
    html: {
      type: "string",
      label: "HTML",
      description: "The HTML you want to convert to PDF.",
      optional: true,
    },
    header: {
      type: "string",
      label: "Header",
      description: "Header in HTML format.",
      optional: true,
    },
    footer: {
      type: "string",
      label: "Footer",
      description: "Footer in HTML format.",
      optional: true,
    },
    pageOffset: {
      type: "integer",
      label: "Page Offset",
      description: "Number to offset your page number",
      optional: true,
    },
    pageSize: {
      type: "string",
      label: "Page Size",
      description: "The standard page formats.",
      optional: true,
      options: PAGE_SIZE_OPTIONS,
    },
    orientation: {
      type: "string",
      label: "Orientation",
      description: "The page orientation.",
      optional: true,
      options: [
        "portrait",
        "landscape",
      ],
    },
    width: {
      type: "string",
      label: "Width",
      description: "Custom width (overrides 'Page Size').",
      optional: true,
    },
    height: {
      type: "string",
      label: "Height",
      description: "Custom height (overrides 'Page Size').",
      optional: true,
    },
    top: {
      type: "string",
      label: "Top Margin",
      description: "You need one if you want to display a header.",
      optional: true,
    },
    bottom: {
      type: "string",
      label: "Bottom Margin",
      description: "You need one if you want to display a footer.",
      optional: true,
    },
    left: {
      type: "string",
      label: "Left",
      description: "Left margin.",
      optional: true,
    },
    right: {
      type: "string",
      label: "Right",
      description: "Right margin.",
      optional: true,
    },
    unit: {
      type: "string",
      label: "Unit",
      description: "Unit for the custom width, height and margins.",
      optional: true,
      options: UNIT_OPTIONS,
    },
    cssMediaType: {
      type: "string",
      label: "CSS Media Type",
      description: "The layout CSS media type.",
      options: [
        "print",
        "screen",
      ],
      optional: true,
    },
    optimizeLayout: {
      type: "boolean",
      label: "Optimize Layout",
      description: "Set this to **true** if you want us to auto-optimize your layout. This helps static items on your page to only show up once, instead of on every page.",
      optional: true,
    },
    lazyLoad: {
      type: "boolean",
      label: "Lazy Load",
      description: "Set this to **true** if you want our software to wait for content to lazy load.",
      optional: true,
    },
    waitTime: {
      type: "integer",
      label: "Wait Time",
      description: "**Time in milliseconds** that you want our software to wait after the page is loaded. You typically use this when you have long running JavaScript for graphs and tables.",
      optional: true,
    },
    css: {
      type: "string",
      label: "CSS",
      description: "Use custom CSS to overwrite the default styles of your page.",
      optional: true,
    },
  },
  async run({ $ }) {
    if ((!this.url && !this.html) || (this.url && this.html)) {
      throw new ConfigurationError("You must provide either URL or HTML.");
    }
    const response = await this.html2Pdf.createPdf({
      $,
      responseType: "arraybuffer",
      params: {
        url: this.url,
        html: this.html,
        header: this.header,
        footer: this.footer,
        page_offset: this.pageOffset,
        page_size: this.pageSize,
        orientation: this.orientation,
        width: this.width,
        height: this.height,
        top: this.top,
        bottom: this.bottom,
        left: this.left,
        right: this.right,
        unit: this.unit,
        css_media_type: this.cssMediaType,
        optimize_layout: this.optimizeLayout,
        lazy_load: this.lazyLoad,
        wait_time: this.waitTime,
        css: this.css,
      },
    });

    const filePath = `/tmp/${Date.now()}.pdf`;
    fs.writeFileSync(filePath, response);

    $.export("$summary", "Generated PDF is saved at");
    $.export("file_path", filePath);
    return filePath;
  },
};

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.

Label	Prop	Type	Description
HTML 2 PDF	`html2Pdf`	`app`	This component uses the HTML 2 PDF app.
URL	`url`	`string`	The URL you want to convert to PDF.
HTML	`html`	`string`	The HTML you want to convert to PDF.
Header	`header`	`string`	Header in HTML format.
Footer	`footer`	`string`	Footer in HTML format.
Page Offset	`pageOffset`	`integer`	Number to offset your page number
Page Size	`pageSize`	`string`	Select a value from the drop down menu:`{ "value": "A0", "label": "A0 - 841 x 1189 mm, 33.1 x 46.8 in" }{ "value": "A1", "label": "A1 - 594 x 841 mm, 23.4 x 33.1 in" }{ "value": "A2", "label": "A2 - 420 x 594 mm, 16.5 x 23.4 in" }{ "value": "A3", "label": "A3 - 297 x 420 mm, 11.7 x 16.5 in" }{ "value": "A4", "label": "A4 - 210 x 297 mm, 8.3 x 11.7 in" }{ "value": "A5", "label": "A5 - 148 x 210 mm, 5.8 x 8.3 in" }{ "value": "A6", "label": "A6 - 105 x 148 mm, 4.1 x 5.8 in" }{ "value": "A7", "label": "A7 - 74 x 105 mm, 2.9 x 4.1 in" }{ "value": "A8", "label": "A8 - 52 x 74 mm, 2.1 x 2.9 in" }{ "value": "A9", "label": "A9 - 37 x 52 mm, 1.5 x 2.1 in" }{ "value": "B0", "label": "B0 - 1000 x 1414 mm, 39.4 x 55.7 in" }{ "value": "B1", "label": "B1 - 707 x 1000 mm, 27.8 x 39.4 in" }{ "value": "B2", "label": "B2 - 500 x 707 mm, 19.7 x 27.8 in" }{ "value": "B3", "label": "B3 - 353 x 500 mm, 13.9 x 19.7 in" }{ "value": "B4", "label": "B4 - 250 x 353 mm, 9.8 x 13.9 in" }{ "value": "B5", "label": "B5 - 176 x 250 mm, 6.9 x 9.8 in" }{ "value": "B6", "label": "B6 - 125 x 176 mm, 4.9 x 6.9 in" }{ "value": "B7", "label": "B7 - 88 x 125 mm, 3.5 x 4.9 in" }{ "value": "B8", "label": "B8 - 62 x 88 mm, 2.4 x 3.5 in" }{ "value": "B9", "label": "B9 - 44 x 62 mm, 1.7 x 2.4 in" }{ "value": "B10", "label": "B10 - 31 x 44 mm, 1.2 x 1.7 in" }{ "value": "C5E", "label": "C5E - 163 x 229 mm" }{ "value": "Comm10E", "label": "Comm10E - 105 x 241 mm, U.S. Common 10 Envelope" }{ "value": "DLE", "label": "DLE - 110 x 220 mm" }{ "value": "Executive", "label": "Executive - 7.25 x 10.5 in" }{ "value": "Folio", "label": "Folio - 210 x 330 mm" }{ "value": "Ledger", "label": "Ledger - 17 x 11 in" }{ "value": "Legal", "label": "Legal - 8.5 x 14.0 in" }{ "value": "Letter", "label": "Letter - 8.5 x 11.0 in" }{ "value": "Tabloid", "label": "Tabloid - 11 x 17 in" }`
Orientation	`orientation`	`string`	Select a value from the drop down menu:`portraitlandscape`
Width	`width`	`string`	Custom width (overrides 'Page Size').
Height	`height`	`string`	Custom height (overrides 'Page Size').
Top Margin	`top`	`string`	You need one if you want to display a header.
Bottom Margin	`bottom`	`string`	You need one if you want to display a footer.
Left	`left`	`string`	Left margin.
Right	`right`	`string`	Right margin.
Unit	`unit`	`string`	Select a value from the drop down menu:`{ "label": "Millimeters (Default)", "value": "mm" }{ "label": "Centimeters", "value": "cm" }{ "label": "Inches", "value": "in" }{ "label": "Pixels", "value": "px" }`
CSS Media Type	`cssMediaType`	`string`	Select a value from the drop down menu:`printscreen`
Optimize Layout	`optimizeLayout`	`boolean`	Set this to true if you want us to auto-optimize your layout. This helps static items on your page to only show up once, instead of on every page.
Lazy Load	`lazyLoad`	`boolean`	Set this to true if you want our software to wait for content to lazy load.
Wait Time	`waitTime`	`integer`	Time in milliseconds that you want our software to wait after the page is loaded. You typically use this when you have long running JavaScript for graphs and tables.
CSS	`css`	`string`	Use custom CSS to overwrite the default styles of your page.

Action Authentication#

HTML 2 PDF uses API keys for authentication. When you connect your HTML 2 PDF account, Pipedream securely stores the keys so you can easily authenticate to HTML 2 PDF APIs in both code and no-code steps.

About HTML 2 PDF#

Convert HTML to PDF without effort.

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