All files / common/models pdf.js

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'use strict';
 
const puppeteer = require('puppeteer');
const logger = require('../../services/logger');
const config = require('../../server/config.json');
 
module.exports = function(PDF) {
  PDF.createPdf = async (id, lang, accessToken, cb) => {
    const base = `${config.protocol}://${
      config.serviceDomain ? config.serviceDomain : config.host
    }${config.serviceDomain ? '' : `:${config.uiPort}`}`;
 
    if (!id) throw new Error('Resource ID is required!');
    if (!lang) throw new Error('Language is required!');
 
    try {
      const browser = await puppeteer.launch({headless: true, args: ['--no-sandbox']});
      const layoutResult = await PDF.findOne({where: {UserId: accessToken.userId}});
      let layout;
      if (layoutResult) {
        layout = layoutResult.Layout;
      } else {
        layout = 'summary';
      }
      const site = `${base}/resources/${id}/print?token=${
        accessToken.id
      }&layout=${layout}&generation=true&lang=${lang}`;
      // console.log(site)
      const page = await browser.newPage();
      /* page.on('console', msg => console.log('PAGE LOG:', msg.text()));
      await page.evaluate(() => console.log(`url is ${location.href}`)); */
      await page.goto(site, {waitUntil: 'networkidle0'});
      await page.emulateMedia('print');
      const pdf = await page.pdf({
        preferCSSPageSize: true,
        displayHeaderFooter: true,
        headerTemplate: '<p style="margin-top: -20mm !important"></p>',
        footerTemplate: '<p style="font-size:10px; margin-left:550px;" class="pageNumber"></p>',
        width: '210mm',
        height: '297mm',
        margin: {
          top: '20mm',
          left: '2mm',
          bottom: '40mm',
          right: '2mm'
        }
      });
      await browser.close();
      await cb(null, pdf, 'application/pdf');
    } catch (e) {
      console.log(e);
      logger.error(`Error creating PDF, ${e}`);
      throw e;
    }
  };
 
  PDF.remoteMethod('createPdf', {
    http: {
      verb: 'get'
    },
    accepts: [
      {
        arg: 'id',
        type: 'number'
      },
      {
        arg: 'lang',
        type: 'string'
      },
      {
        arg: 'accessToken',
        type: 'object',
        http: ctx => ctx.req.accessToken
      }
    ],
    returns: [
      {
        arg: 'pdf',
        type: 'file',
        root: true
      },
      {
        arg: 'Content-Type',
        type: 'string',
        http: {target: 'header'}
      }
    ]
  });
 
  PDF.selectedLayout = async (layout, accessToken) => {
    if (!layout) throw new Error('Layout is required!');
 
    try {
      const oldLayout = await PDF.findOne({where: {UserId: accessToken.userId}});
      if (oldLayout) {
        oldLayout.updateAttributes({
          Layout: layout
        });
      } else {
        PDF.create({
          UserId: accessToken.userId,
          Layout: layout
        });
      }
      return 'success';
    } catch (e) {
      console.log(e);
      logger.error(`Error creating PDF, ${e}`);
      throw e;
    }
  };
 
  PDF.remoteMethod('selectedLayout', {
    http: {
      verb: 'post'
    },
    accepts: [
      {
        arg: 'layout',
        type: 'string'
      },
      {
        arg: 'accessToken',
        type: 'object',
        http: ctx => ctx.req.accessToken
      }
    ],
    returns: {
      arg: 'result',
      type: 'string'
    }
  });
};