Created
September 4, 2022 15:13
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| /** | |
| * Generate html string suitable for rendering in PDF | |
| */ | |
| export const generateReportPdfHTML = async (options: GenerateReportPdfOptions): Promise<string> => { | |
| const pages = CustomReportTemplate({ ...options, ssr: true }); | |
| const pagesContent = _.map(pages, ({ name, content }) => ( | |
| <Flex key={`box-${name}`} flexDir="column" h="100vh" style={{ pageBreakBefore: 'always' }}> | |
| {content} | |
| </Flex> | |
| )); | |
| const body = ReactDOMServer.renderToString( | |
| <ChakraProvider theme={theme}> | |
| <>{pagesContent}</> | |
| </ChakraProvider>, | |
| ); | |
| const styles = ` | |
| <style> | |
| html, | |
| body, | |
| #app { | |
| font-size: 14px; | |
| font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol"; | |
| overflow-x: inherit !important; | |
| overflow-y: inherit !important; | |
| } | |
| *, *::before, *::after { | |
| color: black !important; | |
| } | |
| </style> | |
| `; | |
| const html = ` | |
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charSet="UTF-8" /> | |
| ${styles} | |
| </head> | |
| <body> | |
| ${body} | |
| </body> | |
| </html> | |
| `; | |
| return html; | |
| }; |
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| export class PdfService { | |
| constructor(private configService: ConfigService) {} | |
| async generatePdfWithPuppeteer(html: string): Promise<Buffer> { | |
| const options: puppeteer.PDFOptions = { | |
| format: 'a4', | |
| printBackground: true, | |
| scale: Page.serverScale, | |
| }; | |
| const browser = await puppeteer.launch({ | |
| executablePath: this.configService.config.pdf.chromiumPath, | |
| args: [ | |
| '--headless', | |
| '--no-sandbox', | |
| '--disable-setuid-sandbox', | |
| '--disable-gpu', | |
| '--disable-software-rasterize', | |
| '--disable-dev-shm-usage', | |
| '--single-process', | |
| '--no-zygote', | |
| ], | |
| }); | |
| try { | |
| const page = await browser.newPage(); | |
| await page.setContent(html, { | |
| waitUntil: 'domcontentloaded', | |
| }); | |
| const pdf = await page.pdf(options); | |
| await page.close(); | |
| await browser.close(); | |
| return pdf; | |
| } finally { | |
| await browser.close(); | |
| } | |
| } | |
| generatePDF(html: string): Promise<Buffer> { | |
| return this.generatePdfWithPuppeteer(html); | |
| } | |
| } |
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