Generate PDF with HTML 2 PDF API on Updated Page in Database from Notion API

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Updated Page in Database from the Notion API

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Getting Started#

This integration creates a workflow with a Notion 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 Updated Page in Database trigger
1. Connect your Notion account
2. Configure timer
3. Select a Database ID
4. Configure Include New Pages
5. Optional- Select one or more Property Types
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#

Updated Page in Database on Notion

Description:Emit new event when a page in a database is updated. To select a specific page, use `Updated Page ID` instead

Version:0.1.3

Key:notion-updated-page

View on GitHub

Notion Overview#

Notion's API allows for the creation, reading, updating, and deleting of pages, databases, and their contents within Notion. Using Pipedream's platform, you can build workflows that connect Notion with various other services to automate tasks such as content management, task tracking, and data synchronization. With Pipedream's serverless execution, you can trigger these workflows on a schedule, or by external events from other services, without managing any infrastructure.

Trigger Code#

import notion from "../../notion.app.mjs";
import sampleEmit from "./test-event.mjs";
import base from "../common/base.mjs";
import constants from "../common/constants.mjs";
import zlib from "zlib";

export default {
  ...base,
  key: "notion-updated-page",
  name: "Updated Page in Database", /* eslint-disable-line pipedream/source-name */
  description: "Emit new event when a page in a database is updated. To select a specific page, use `Updated Page ID` instead",
  version: "0.1.3",
  type: "source",
  dedupe: "unique",
  props: {
    ...base.props,
    databaseId: {
      propDefinition: [
        notion,
        "databaseId",
      ],
    },
    includeNewPages: {
      type: "boolean",
      label: "Include New Pages",
      description: "Set to `true` to emit events when pages are created. Set to `false` to ignore new pages.",
      default: true,
    },
    properties: {
      propDefinition: [
        notion,
        "propertyTypes",
        (c) => ({
          parentId: c.databaseId,
          parentType: "database",
        }),
      ],
      description: "Only emit events when one or more of the selected properties have changed",
      optional: true,
    },
  },
  hooks: {
    async activate() {
      console.log("Activating: fetching pages and properties");
      this._setLastUpdatedTimestamp(Date.now());
      const propertyValues = {};
      const propertiesToCheck = await this._getPropertiesToCheck();
      const params = this.lastUpdatedSortParam();
      const pagesStream = this.notion.getPages(this.databaseId, params);
      for await (const page of pagesStream) {
        for (const propertyName of propertiesToCheck) {
          const currentValue = this._maybeRemoveFileSubItems(page.properties[propertyName]);
          propertyValues[page.id] = {
            ...propertyValues[page.id],
            [propertyName]: currentValue,
          };
        }
      }
      this._setPropertyValues(propertyValues);
    },
    async deactivate() {
      console.log("Deactivating: clearing states");
      this._setLastUpdatedTimestamp(null);
    },
  },
  methods: {
    ...base.methods,
    _getLastUpdatedTimestamp() {
      return this.db.get(constants.timestamps.LAST_EDITED_TIME);
    },
    _setLastUpdatedTimestamp(ts) {
      this.db.set(constants.timestamps.LAST_EDITED_TIME, ts);
    },
    _getPropertyValues() {
      const compressed = this.db.get("propertyValues");
      const buffer = Buffer.from(compressed, "base64");
      const decompressed = zlib.inflateSync(buffer).toString();
      return JSON.parse(decompressed);
    },
    _setPropertyValues(propertyValues) {
      const string = JSON.stringify(propertyValues);
      const compressed = zlib.deflateSync(string).toString("base64");
      this.db.set("propertyValues", compressed);
    },
    async _getPropertiesToCheck() {
      if (this.properties?.length) {
        return this.properties;
      }
      const { properties } = await this.notion.retrieveDatabase(this.databaseId);
      return Object.keys(properties);
    },
    _maybeRemoveFileSubItems(property) {
      // Files & Media type:
      // `url` and `expiry_time` are constantly updated by Notion, so ignore these fields
      if (property.type === "files") {
        const modified = structuredClone(property);
        for (const file of modified.files) {
          if (file.type === "file") {
            delete file.file;
          }
        }
        return modified;
      }
      return property;
    },
    _generateMeta(obj, summary) {
      const { id } = obj;
      const title = this.notion.extractPageTitle(obj);
      const ts = Date.now();
      return {
        id: `${id}-${ts}`,
        summary: `${summary}: ${title}`,
        ts,
      };
    },
    _emitEvent(page, changes = [], isNewPage = true) {
      const meta = isNewPage
        ? this._generateMeta(page, constants.summaries.PAGE_ADDED)
        : this._generateMeta(page, constants.summaries.PAGE_UPDATED);
      const event = {
        page,
        changes,
      };
      this.$emit(event, meta);
    },
  },
  async run() {
    const lastCheckedTimestamp = this._getLastUpdatedTimestamp();
    const propertyValues = this._getPropertyValues();

    if (!lastCheckedTimestamp) {
      // recently updated (deactivated / activated), skip execution
      console.log("Awaiting restart completion: skipping execution");
      return;
    }

    const params = {
      ...this.lastUpdatedSortParam(),
      filter: {
        timestamp: "last_edited_time",
        last_edited_time: {
          on_or_after: new Date(lastCheckedTimestamp).toISOString(),
        },
      },
    };
    let newLastUpdatedTimestamp = lastCheckedTimestamp;
    const propertiesToCheck = await this._getPropertiesToCheck();
    const pagesStream = this.notion.getPages(this.databaseId, params);

    for await (const page of pagesStream) {
      const changes = [];
      let isNewPage = false;
      let propertyHasChanged = false;

      newLastUpdatedTimestamp = Math.max(
        newLastUpdatedTimestamp,
        Date.parse(page.last_edited_time),
      );

      if (lastCheckedTimestamp > Date.parse(page.last_edited_time)) {
        break;
      }

      for (const propertyName of propertiesToCheck) {
        const previousValue = structuredClone(propertyValues[page.id]?.[propertyName]);
        // value used to compare and to save to this.db
        const currentValueToSave = this._maybeRemoveFileSubItems(page.properties[propertyName]);
        // (unmodified) value that should be emitted
        const currentValueToEmit = page.properties[propertyName];

        const pageExistsInDB = propertyValues[page.id] != null;
        const propertyChanged =
          JSON.stringify(previousValue) !== JSON.stringify(currentValueToSave);

        if (pageExistsInDB && propertyChanged) {
          propertyHasChanged = true;
          propertyValues[page.id] = {
            ...propertyValues[page.id],
            [propertyName]: currentValueToSave,
          };
          changes.push({
            property: propertyName,
            previousValue,
            currentValue: currentValueToEmit,
          });
        }

        if (!pageExistsInDB) {
          isNewPage = true;
          propertyHasChanged = true;
          propertyValues[page.id] = {
            [propertyName]: currentValueToSave,
          };
          changes.push({
            property: propertyName,
            previousValue,
            currentValue: currentValueToEmit,
          });
        }
      }

      if (isNewPage && !this.includeNewPages) {
        console.log(`Ignoring new page: ${page.id}`);
        continue;
      }

      if (propertyHasChanged) {
        this._emitEvent(page, changes, isNewPage);
      }
    }

    this._setLastUpdatedTimestamp(newLastUpdatedTimestamp);
    this._setPropertyValues(propertyValues);
  },
  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
Notion	`notion`	`app`	This component uses the Notion app.
N/A	`db`	`$.service.db`	This component uses `$.service.db` to maintain state between executions.
	`timer`	`$.interface.timer`
Database ID	`databaseId`	`string`	Select a value from the drop down menu.
Include New Pages	`includeNewPages`	`boolean`	Set to `true` to emit events when pages are created. Set to `false` to ignore new pages.
Property Types	`properties`	`string[]`	Select a value from the drop down menu.

Trigger Authentication#

Notion uses OAuth authentication. When you connect your Notion account, Pipedream will open a popup window where you can sign into Notion and grant Pipedream permission to connect to your account. Pipedream securely stores and automatically refreshes the OAuth tokens so you can easily authenticate any Notion API.

Pipedream requests the following authorization scopes when you connect your account:

About Notion#

Notion is a new tool that blends your everyday work apps into one. It's the all-in-one workspace for you and your team.

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.