74 lines
2.0 KiB
TypeScript
74 lines
2.0 KiB
TypeScript
import { Processor, WorkerHost } from '@nestjs/bullmq';
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import { Job } from 'bullmq';
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import * as puppeteer from 'puppeteer';
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import * as pdfPrinter from 'pdf-to-printer';
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import * as path from 'path';
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import * as fs from 'fs';
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import * as os from 'os';
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@Processor('printer')
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export class PrinterProcessor extends WorkerHost {
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async process(job: Job<any>): Promise<any> {
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const data = job.data;
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const tempFilePath = path.join(os.tmpdir(), `print-${job.id}-${Date.now()}.pdf`);
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let browser;
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try {
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browser = await puppeteer.launch({
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headless: true,
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args: ['--no-sandbox', '--disable-setuid-sandbox']
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});
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const page = await browser.newPage();
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const width = data.width || '80mm';
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const height = data.height;
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const fullHtml = `
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<script src="https://cdn.tailwindcss.com"></script>
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<style>
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html, body { margin: 0; padding: 0; }
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body { zoom: 1.4; transform-origin: top left; }
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@page { size: ${width} ${height || 'auto'}; margin: 0; }
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</style>
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</head>
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<body>${data.html}</body>
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</html>
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`;
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await page.setContent(fullHtml, { waitUntil: 'networkidle0' });
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const pdfOptions: any = {
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path: tempFilePath,
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printBackground: true,
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width: width,
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margin: { top: '0px', right: '0px', bottom: '0px', left: '0px' }
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};
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if (height) pdfOptions.height = height;
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await page.pdf(pdfOptions);
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await browser.close();
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await pdfPrinter.print(tempFilePath, {
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printer: data.printerName,
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silent: true
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});
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return { status: 'success', jobId: job.id };
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} catch (error) {
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if (browser) await browser.close();
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console.error(`Erro no Job ${job.id}:`, error);
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throw error;
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} finally {
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if (fs.existsSync(tempFilePath)) {
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fs.unlinkSync(tempFilePath);
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}
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}
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}
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} |