add exceljs for xlsx file gen

main.js

@@ -6,7 +6,8 @@ const config = require("./config/db.config.js");
 const session = require('express-session');
 const bcrypt = require('bcrypt');
 const signupRouter = require('./signup'); // Adjust path as necessary
-
+const ExcelJS = require('exceljs');
+const cors = require('cors');
 
 const PORT = process.env.PORT || 8080; // Default port is 5000
 
@@ -33,11 +34,13 @@ const pool = mysql.createPool({
 });
 
 
-
-
-
 const app = express();
 
+app.use(cors()); // Enable CORS for all origins
+// app.use(cors({
+//   origin: '[ http://192.168.1.6:8081 , http://localhost:8081 ]'
+// }));
+
 app.set('view engine', 'ejs');
 app.set('views', path.join(__dirname, 'views'));
 
@@ -54,6 +57,19 @@ app.use(express.static(path.join(__dirname, 'static')));
 app.use(signupRouter);
 
 
+app.get('/x', function (request, response) {
+  if (request.session.loggedin) {
+    // Output username
+    // response.send('Welcome back, ' + request.session.username + '!');
+    console.log(request.session.username, 'open main page');
+    // Render home page with username
+    response.render('home', { username: request.session.username });
+  } else {
+    // response.send('Please login to view this page!');
+    response.redirect('/login');
+  }
+});
+
 app.get('/login', function (request, response) {
   /// Render login template with any message from query parameters
   console.log('Message:', request.query.message); // Log the message
@@ -64,6 +80,7 @@ app.get('/login', function (request, response) {
 });
 
 
+
 app.post('/auth', async function (request, response) {
   // Capture the input fields
   const { login, password } = request.body;
@@ -151,6 +168,7 @@ app.get('/logout', function (request, response) {
   });
 });
 
+
 // Serve the signup form
 app.get('/signup', function (request, response) {
 
@@ -182,6 +200,67 @@ if (!config.enableSignup) {
   });
 
 
+  app.get('/download', async (req, res) => {
+    const filename = req.query.filename || 'default.xlsx'; // Get filename from query parameter
+    console.log('got the filename', filename);
+
+    const workbook = new ExcelJS.Workbook();
+    const worksheet = workbook.addWorksheet('Sheet1');
+
+    // Set column widths
+    worksheet.columns = [
+        { width: 9 },
+        { width: 16 },
+        { width: 42 },
+        { width: 94 }
+    ];
+
+    // Add header row
+    const headerRow = worksheet.addRow(['Модель', 'Сер.номер', 'Заявленная неисправность', 'Произведенная работа']);
+
+    // Define border style
+    const thinBlackBorder = {
+        top: { style: 'thin', color: { argb: 'FF000000' } },
+        left: { style: 'thin', color: { argb: 'FF000000' } },
+        bottom: { style: 'thin', color: { argb: 'FF000000' } },
+        right: { style: 'thin', color: { argb: 'FF000000' } }
+    };
+
+    // Style the header row
+    headerRow.eachCell({ includeEmpty: true }, (cell, colNumber) => {
+        cell.fill = {
+            type: 'pattern',
+            pattern: 'solid',
+            fgColor: { argb: '92D050' }
+        };
+        cell.font = {
+            name: 'Calibri',
+            size: 11,
+            color: { argb: '000000' },
+            bold: false
+        };
+        cell.alignment = { vertical: 'middle', horizontal: 'center' };
+        cell.border = thinBlackBorder;
+    });
+
+    // Style the rest of the cells with border
+    worksheet.eachRow({ includeEmpty: true }, (row) => {
+        row.eachCell({ includeEmpty: true }, (cell) => {
+            if (!cell.border) {  // Apply border only if not already defined
+                cell.border = thinBlackBorder;
+            }
+        });
+    });
+
+    // Generate buffer from workbook
+    const buffer = await workbook.xlsx.writeBuffer();
+
+    // Set headers and send file
+    res.setHeader('Content-Disposition', `attachment; filename*=UTF-8''${encodeURIComponent(filename)}.xlsx`);
+    res.setHeader('Content-Type', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
+    res.send(buffer);
+});
+
 app.listen(PORT, () => {
   console.info(`Listening on http://0.0.0.0:${PORT}/`);
 });