scripts/render-carousel.mjs

import { readFile, writeFile, mkdir } from 'node:fs/promises';
import { resolve, join } from 'node:path';
import { unzipSync } from 'fflate';
import { parseLayout, validateDocument } from '../src/document.mjs';
import { nativeRenderer } from '../src/renderer.mjs';

const [input, output] = process.argv.slice(2);
if (!input || !output) throw new Error('Usage: CAROUSEL_RENDERER_CONFIG=/path/renderer.json node scripts/render-carousel.mjs project.carousel output-directory');
const renderer = nativeRenderer();
if (!renderer) throw new Error('Set CAROUSEL_RENDERER_CONFIG after running setup-native-renderer.mjs');
const bytes = await readFile(resolve(input));
const members = unzipSync(bytes);
const document = validateDocument(parseLayout(Buffer.from(members['carousel.yaml']).toString('utf8')));
const result = await renderer.render(bytes, { slideCount: document.slides });
await mkdir(resolve(output), { recursive: true });
for (const slide of result.slides) await writeFile(join(resolve(output), slide.file), slide.bytes);
await writeFile(join(resolve(output), 'preview.png'), result.sheet);
const report = { engine: result.engine, slides: result.slides.map(({ bytes, ...metadata }) => metadata), warnings: result.warnings, preview: join(resolve(output), 'preview.png'), visual_review: 'not performed' };
await writeFile(join(resolve(output), 'render.json'), JSON.stringify(report, null, 2) + '\n');
console.log(JSON.stringify(report, null, 2));