incr: move pdf printer to main

- fix pdf printing

main/registerIpcMainActionListeners.ts

@@ -4,12 +4,12 @@ import fs from 'fs/promises';
 import path from 'path';
 import databaseManager from '../backend/database/manager';
 import { Main } from '../main';
-import saveHtmlAsPdf from '../src/saveHtmlAsPdf';
 import { DatabaseMethod } from '../utils/db/types';
 import { DatabaseResponse } from '../utils/ipc/types';
 import { IPC_ACTIONS } from '../utils/messages';
 import { getUrlAndTokenString, sendError } from './contactMothership';
 import { getLanguageMap } from './getLanguageMap';
+import { saveHtmlAsPdf } from './saveHtmlAsPdf';
 
 export default function registerIpcMainActionListeners(main: Main) {
   ipcMain.handle(IPC_ACTIONS.TOGGLE_MAXIMIZE_CURRENT_WINDOW, (event) => {
@@ -46,7 +46,7 @@ export default function registerIpcMainActionListeners(main: Main) {
   ipcMain.handle(
     IPC_ACTIONS.SAVE_HTML_AS_PDF,
     async (event, html, savePath) => {
-      return await saveHtmlAsPdf(html, savePath);
+      return await saveHtmlAsPdf(html, savePath, app);
     }
   );
 

main/saveHtmlAsPdf.ts

@@ -0,0 +1,56 @@
+import { App, BrowserWindow } from 'electron';
+import fs from 'fs/promises';
+import path from 'path';
+
+const PRINT_OPTIONS = {
+  marginsType: 1, // no margin
+  pageSize: 'A4',
+  printBackground: true,
+  printBackgrounds: true,
+  printSelectionOnly: false,
+};
+
+export async function saveHtmlAsPdf(
+  html: string,
+  savePath: string,
+  app: App
+): Promise<boolean> {
+  /**
+   * Store received html as a file in a tempdir,
+   * this will be loaded into the print view
+   */
+  const tempRoot = app.getPath('temp');
+  const filename = path.parse(savePath).name;
+  const htmlPath = path.join(tempRoot, `${filename}.html`);
+  await fs.writeFile(htmlPath, html, { encoding: 'utf-8' });
+
+  const printWindow = getInitializedPrintWindow(htmlPath);
+
+  /**
+   * After the printWindow content is ready, save as pdf and
+   * then close the window and delete the temp html file.
+   */
+  return await new Promise((resolve) => {
+    printWindow.webContents.once('did-finish-load', () => {
+      printWindow.webContents.printToPDF(PRINT_OPTIONS).then((data) => {
+        fs.writeFile(savePath, data).then(() => {
+          printWindow.close();
+          fs.unlink(htmlPath).then(() => {
+            resolve(true);
+          });
+        });
+      });
+    });
+  });
+}
+
+function getInitializedPrintWindow(printFilePath: string) {
+  const printWindow = new BrowserWindow({
+    width: 595,
+    height: 842,
+    show: false,
+  });
+
+  printWindow.loadFile(printFilePath);
+  return printWindow;
+}

schemas/app/PrintSettings.json

@@ -115,23 +115,19 @@
       "fieldtype": "Select",
       "options": [
         {
-          "value": "Inter",
-          "label": "Inter"
+          "value": "Arial",
+          "label": "Arial"
         },
         {
           "value": "Times New Roman",
           "label": "Times New Roman"
         },
-        {
-          "value": "Arial",
-          "label": "Arial"
-        },
         {
           "value": "Courier",
           "label": "Courier"
         }
       ],
-      "default": "Inter"
+      "default": "Arial"
     }
   ],
   "quickEditFields": [

src/pages/PrintView/PrintView.vue

@@ -56,6 +56,7 @@ import Button from 'src/components/Button.vue';
 import PageHeader from 'src/components/PageHeader.vue';
 import InvoiceTemplate from 'src/components/SalesInvoice/InvoiceTemplate.vue';
 import TwoColumnForm from 'src/components/TwoColumnForm.vue';
+import { fyo } from 'src/initFyo';
 import { makePDF } from 'src/utils/ipcCalls';
 import { IPC_ACTIONS } from 'utils/messages';
 
@@ -77,6 +78,10 @@ export default {
   async mounted() {
     this.doc = await fyo.doc.getDoc(this.schemaName, this.name);
     this.printSettings = await fyo.doc.getSingle('PrintSettings');
+
+    if (fyo.store.isDevelopment) {
+      window.pv = this;
+    }
   },
   computed: {
     printTemplate() {
@@ -84,13 +89,33 @@ export default {
     },
   },
   methods: {
+    constructPrintDocument() {
+      const html = document.createElement('html');
+      const head = document.createElement('head');
+      const body = document.createElement('body');
+      const style = document.getElementsByTagName('style');
+      const styleTags = Array.from(style)
+        .map((s) => s.outerHTML)
+        .join('\n');
+
+      head.innerHTML = [
+        '<meta charset="UTF-8">',
+        '<title>Print Window</title>',
+        styleTags,
+      ].join('\n');
+
+      body.innerHTML = this.$refs.printContainer.innerHTML;
+      html.append(head, body);
+      return html.outerHTML;
+    },
     async makePDF() {
       const savePath = await this.getSavePath();
       if (!savePath) return;
 
-      const html = this.$refs.printContainer.innerHTML;
-      fyo.telemetry.log(Verb.Exported, 'SalesInvoice', { extension: 'pdf' });
+
+      const html = this.constructPrintDocument()
       await makePDF(html, savePath);
+      fyo.telemetry.log(Verb.Exported, 'SalesInvoice', { extension: 'pdf' });
     },
     async getSavePath() {
       const options = {

src/print.html

@@ -1,13 +0,0 @@
-<!DOCTYPE html>
-<html>
-
-<head>
-  <meta charset="UTF-8">
-  <title>Print</title>
-</head>
-
-<body>
-  <div class="printTarget"></div>
-</body>
-
-</html>

src/print.ts

@@ -1 +0,0 @@
-import './styles/index.css';

src/saveHtmlAsPdf.ts

@@ -1,59 +0,0 @@
-import { BrowserWindow } from 'electron';
-import fs from 'fs/promises';
-import { sleep } from 'utils';
-
-const PRINT_OPTIONS = {
-  marginsType: 1, // no margin
-  pageSize: 'A4',
-  printBackground: true,
-  printBackgrounds: true,
-  printSelectionOnly: false,
-};
-
-export default async function saveHtmlAsPdf(
-  html: string,
-  savePath: string
-): Promise<void> {
-  const printWindow = getInitializedPrintWindow();
-
-  printWindow.webContents.executeJavaScript(`
-    document.body.innerHTML = \`${html}\`;
-  `);
-
-  return await new Promise((resolve) => {
-    printWindow.webContents.on('did-finish-load', async () => {
-      await sleep(1); // Required else pdf'll be blank.
-
-      const data = await printWindow.webContents.printToPDF(PRINT_OPTIONS);
-      await fs.writeFile(savePath, data);
-
-      resolve();
-    });
-  });
-}
-
-function getInitializedPrintWindow() {
-  const printWindow = new BrowserWindow({
-    width: 595,
-    height: 842,
-    show: false,
-    webPreferences: {
-      contextIsolation: false,
-      nodeIntegration: false,
-    },
-  });
-  const printWindowUrl = getPrintWindowUrl();
-  printWindow.loadURL(printWindowUrl);
-  return printWindow;
-}
-
-function getPrintWindowUrl() {
-  // @ts-ignore
-  let url = global.WEBPACK_DEV_SERVER_URL as string | undefined;
-  if (url) {
-    url = url + 'print';
-  } else {
-    url = 'app://./print.html';
-  }
-  return url;
-}

src/utils/ipcCalls.ts

@@ -26,8 +26,17 @@ export async function showItemInFolder(filePath: string) {
 }
 
 export async function makePDF(html: string, savePath: string) {
-  await ipcRenderer.invoke(IPC_ACTIONS.SAVE_HTML_AS_PDF, html, savePath);
-  showExportInFolder(t`Save as PDF Successful`, savePath);
+  const success = await ipcRenderer.invoke(
+    IPC_ACTIONS.SAVE_HTML_AS_PDF,
+    html,
+    savePath
+  );
+
+  if (success) {
+    showExportInFolder(t`Save as PDF Successful`, savePath);
+  } else {
+    showToast({ message: t`Export Failed`, type: 'error' });
+  }
 }
 
 export async function runWindowAction(name: WindowAction) {

vue.config.js

@@ -32,10 +32,6 @@ module.exports = {
       entry: 'src/renderer.ts',
       filename: 'index.html',
     },
-    print: {
-      entry: 'src/print.ts',
-      filename: 'print.html',
-    },
   },
   runtimeCompiler: true,
   lintOnSave: process.env.NODE_ENV !== 'production',