Added basic card generation function

ref #14

src/PdfCreator.ts

@@ -9,6 +9,7 @@ import path from 'path';
 import { PDFDocument } from 'pdf-lib';
 import puppeteer from "puppeteer";
 import { Runner } from './models/Runner';
+import { RunnerCard } from './models/RunnerCard';
 import { RunnerGroup } from './models/RunnerGroup';
 /**
  * This class is responsible for all things pdf creation.
@@ -112,6 +113,30 @@ export class PdfCreator {
         return pdf
     }
 
+    /**
+     * Generate runner card pdfs.
+     * @param cards The runner cars you want to generate the cards for.
+     * @param locale The locale used for the cards (default:en)
+     */
+    public async generateRunnerCards(cards: RunnerCard[], locale: string = "en"): Promise<Buffer> {
+        if (cards.length > 10) {
+            let pdf_promises = new Array<Promise<Buffer>>();
+            let i, j;
+            for (i = 0, j = cards.length; i < j; i += 10) {
+                let chunk = cards.slice(i, i + 10);
+                pdf_promises.push(this.generateRunnerCards(chunk, locale));
+            }
+            const pdfs = await Promise.all(pdf_promises);
+            return await this.mergePdfs(pdfs);
+        }
+        await i18next.changeLanguage(locale);
+        const template_source = fs.readFileSync(`${this.templateDir}/runner_card.html`, 'utf8');
+        const template = Handlebars.compile(template_source);
+        const result = template({ cards })
+        const pdf = await this.renderPdf(result, { format: "A4", landscape: false });
+        return pdf
+    }
+
     /**
      * Converts all images in html to base64.
      * Works with image files in the template directory or images from urls.