wehub-resource-sync
71 lines
1.9 KiB
JavaScript
71 lines
1.9 KiB
JavaScript
const createFilesLib = require("../lib.js");
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/**
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* Applies AnythingLLM branding to a PDF document.
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* Adds a logo watermark or fallback text to the bottom-right of each page.
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* @param {PDFDocument} pdfDoc - The pdf-lib PDFDocument instance
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* @param {Object} pdfLib - The pdf-lib module exports (rgb, StandardFonts)
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* @returns {Promise<void>}
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*/
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async function applyBranding(pdfDoc, { rgb, StandardFonts }) {
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const font = await pdfDoc.embedFont(StandardFonts.HelveticaOblique);
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const pages = pdfDoc.getPages();
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const logoPng = createFilesLib.getLogo({
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forDarkBackground: false,
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format: "buffer",
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});
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const logoImage = logoPng ? await pdfDoc.embedPng(logoPng) : null;
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const logoWidth = 80;
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const logoHeight = logoImage
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? (logoImage.height / logoImage.width) * logoWidth
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: 0;
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const marginRight = 20;
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const marginBottom = 20;
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for (const page of pages) {
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const { width } = page.getSize();
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if (logoImage) {
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const createdWithText = "created with";
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const fontSize = 7;
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const textWidth = font.widthOfTextAtSize(createdWithText, fontSize);
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const logoX = width - marginRight - logoWidth;
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page.drawText(createdWithText, {
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x: logoX + (logoWidth - textWidth) / 2,
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y: marginBottom + logoHeight + 2,
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size: fontSize,
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font,
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color: rgb(0.6, 0.6, 0.6),
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opacity: 0.6,
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});
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page.drawImage(logoImage, {
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x: logoX,
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y: marginBottom,
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width: logoWidth,
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height: logoHeight,
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opacity: 0.6,
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});
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} else {
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const fallbackText = "Created with AnythingLLM";
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const fontSize = 9;
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const textWidth = font.widthOfTextAtSize(fallbackText, fontSize);
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page.drawText(fallbackText, {
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x: width - marginRight - textWidth,
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y: marginBottom,
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size: fontSize,
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font,
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color: rgb(0.6, 0.6, 0.6),
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});
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}
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}
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}
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module.exports = {
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applyBranding,
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};
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