70 lines
2.1 KiB
JavaScript
70 lines
2.1 KiB
JavaScript
#!/usr/bin/env node
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// Assemble rendered slide PNGs into a 16:9 PPTX: one full-bleed image per slide,
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// native speaker notes, document metadata.
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//
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// Usage:
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// node build.mjs <pngdir> <out.pptx> [--notes notes.json] [--title T] [--author A] [--subject S]
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import { createRequire } from 'node:module';
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import { existsSync, readdirSync, readFileSync } from 'node:fs';
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import path from 'node:path';
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const require = createRequire(import.meta.url);
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const PptxGenJS = require('pptxgenjs');
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const args = process.argv.slice(2);
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if (!args[0] || !args[1]) {
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console.error(
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'usage: node build.mjs <pngdir> <out.pptx> [--notes notes.json] [--title T] [--author A] [--subject S]',
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);
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process.exit(1);
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}
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const invocationDir = process.env.INIT_CWD || process.cwd();
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const dir = path.resolve(invocationDir, args[0]);
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const out = path.resolve(invocationDir, args[1]);
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const opt = (flag, fallback) => {
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const index = args.indexOf(flag);
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return index >= 0 ? args[index + 1] : fallback;
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};
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const presentation = new PptxGenJS();
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presentation.layout = 'LAYOUT_WIDE'; // 13.333 x 7.5 in
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presentation.title = opt('--title', path.basename(out, '.pptx'));
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presentation.author = opt('--author', 'ThothII');
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presentation.subject = opt('--subject', '');
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const notesOption = opt('--notes', null);
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const notesPath = notesOption
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? path.resolve(invocationDir, notesOption)
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: path.join(dir, 'notes.json');
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const notes = existsSync(notesPath)
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? JSON.parse(readFileSync(notesPath, 'utf8'))
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: {};
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const pngs = readdirSync(dir)
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.filter(file => /^\d+\.png$/.test(file))
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.sort((left, right) => Number.parseInt(left, 10) - Number.parseInt(right, 10));
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if (pngs.length === 0) {
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console.error('no NN.png files in ' + dir);
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process.exit(1);
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}
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for (const file of pngs) {
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const slideNumber = Number.parseInt(file, 10);
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const slide = presentation.addSlide();
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slide.background = { color: 'FCFAFA' };
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slide.addImage({
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path: path.join(dir, file),
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x: 0,
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y: 0,
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w: 13.333,
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h: 7.5,
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});
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if (notes[slideNumber]) {
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slide.addNotes(notes[slideNumber]);
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}
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}
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await presentation.writeFile({ fileName: out });
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console.log('built', out, '-', pngs.length, 'slides');
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