Add print-to-pdf endpoint to system.ts

Author: basst85

src/server/api/system.ts

@@ -1,5 +1,6 @@
 import express from 'express'
 import {BrowserWindow, systemPreferences} from 'electron'
+import {writeFile} from 'fs'
 const router = express.Router();
 
 router.get('/can-prompt-touch-id', (req, res) => {
@@ -47,4 +48,26 @@ router.post('/print', async (req, res) => {
   await printWindow.loadURL(`data:text/html;charset=UTF-8,${html}`);
 });
 
+router.post('/print-to-pdf', async (req, res) => {
+  const {path, html} = req.body;
+
+  let printWindow = new BrowserWindow({
+    show: false,
+  });
+
+  printWindow.webContents.on('did-finish-load', () => {
+    printWindow.webContents.printToPDF({}).then(data => {
+      writeFile(path, data, (e) => {
+        if (e) throw error;
+      });
+    }).catch(e => {
+      res.status(400).json({
+        error: e.message,
+      });
+    });
+  });
+
+  await printWindow.loadURL(`data:text/html;charset=UTF-8,${html}`);
+});
+
 export default router;