Fix .gitignore, add secure pairing key route, and fix template errors

.gitignore

@@ -1,4 +1,11 @@
+
 recticel/
 .venv/
 __pycache__/
 app/__pycache__/
+tray/
+jdk-11.0.20-full/
+# Ignore generated or local files
+py_app/instance/pairing_keys.json
+py_app/app/forked_tray.py
+backup/print_module.html

py_app/app/routes.py

@@ -1,3 +1,17 @@
+import json
+from flask import Blueprint
+bp = Blueprint('main', __name__)
+@bp.route('/get_pairing_keys')
+def get_pairing_keys():
+    """Return all pairing keys as JSON for client selection."""
+    keys_path = os.path.join(current_app.instance_path, 'pairing_keys.json')
+    try:
+        with open(keys_path, 'r') as f:
+            keys = json.load(f)
+    except Exception as e:
+        print(f"Error loading pairing keys: {e}")
+        return jsonify({'success': False, 'error': str(e), 'pairing_keys': []}), 500
+    return jsonify({'success': True, 'pairing_keys': keys})
 import os
 import mariadb
 from datetime import datetime, timedelta
@@ -932,10 +946,65 @@ def upload_data():
 def print_module():
     return render_template('print_module.html')
 
+
+import secrets
+from datetime import datetime, timedelta
+
+@bp.route('/generate_pairing_key', methods=['POST'])
+def generate_pairing_key():
+    """Generate a secure pairing key for a printer and store it."""
+    printer_name = request.form.get('printer_name', '').strip()
+    if not printer_name:
+        flash('Printer name is required.', 'danger')
+        return redirect(url_for('main.download_extension'))
+
+    # Generate a secure random key
+    pairing_key = secrets.token_urlsafe(32)
+    warranty_until = (datetime.utcnow() + timedelta(days=365)).strftime('%Y-%m-%d')
+
+    # Load existing keys
+    keys_path = os.path.join(current_app.instance_path, 'pairing_keys.json')
+    try:
+        if os.path.exists(keys_path):
+            with open(keys_path, 'r') as f:
+                keys = json.load(f)
+        else:
+            keys = []
+    except Exception as e:
+        keys = []
+
+    # Add new key
+    keys.append({
+        'printer_name': printer_name,
+        'pairing_key': pairing_key,
+        'warranty_until': warranty_until
+    })
+
+    # Save updated keys
+    with open(keys_path, 'w') as f:
+        json.dump(keys, f, indent=2)
+
+    # Pass new key and all keys to template
+    return render_template('download_extension.html',
+                           pairing_key=pairing_key,
+                           printer_name=printer_name,
+                           warranty_until=warranty_until,
+                           pairing_keys=keys)
+
 @bp.route('/download_extension')
 def download_extension():
     """Route for downloading the Chrome extension"""
-    return render_template('download_extension.html')
+    # Load all pairing keys for display
+    keys_path = os.path.join(current_app.instance_path, 'pairing_keys.json')
+    try:
+        if os.path.exists(keys_path):
+            with open(keys_path, 'r') as f:
+                keys = json.load(f)
+        else:
+            keys = []
+    except Exception as e:
+        keys = []
+    return render_template('download_extension.html', pairing_keys=keys)
 
 @bp.route('/extension_files/<path:filename>')
 def extension_files(filename):

py_app/app/templates/download_extension.html

@@ -1,43 +1,44 @@
 {% extends "base.html" %}
-
-{% block title %}Quality Recticel Print Service Downloads{% endblock %}
-
 {% block content %}
-<div class="container-fluid">
-    <!-- Header Section -->
-    <div class="row justify-content-center mb-4">
-        <div class="col-md-12">
-            <div class="text-center">
-                <h1 class="display-4">🖨️ Quality Recticel Print Solutions</h1>
-                <p class="lead">Choose Your Printing Method: Chrome Extension or Windows Service</p>
-                <div class="alert alert-info mx-auto" style="max-width: 800px;">
-                    <strong>🆕 TWO POWERFUL OPTIONS:</strong> Simple browser-based Chrome extension or enterprise-grade Windows service for advanced printing needs.
+<div style="max-width: 600px; margin: 40px auto; padding: 32px; background: #fff; border-radius: 12px; box-shadow: 0 2px 12px #0002;">
+    <h2>QZ Tray Pairing Key Management</h2>
+    <form id="pairing-form" method="POST" action="/generate_pairing_key" style="margin-bottom: 32px;">
+        <label for="printer_name">Printer Name:</label>
+        <input type="text" id="printer_name" name="printer_name" required style="margin: 0 8px 0 8px;">
+        <button type="submit">Generate Pairing Key</button>
+    </form>
+    <div id="pairing-result">
+        {% if pairing_key %}
+        <div style="margin-bottom: 16px;">
+            <strong>Pairing Key:</strong> <span style="font-family: monospace;">{{ pairing_key }}</span><br>
+            <strong>Printer Name:</strong> {{ printer_name }}<br>
+            <strong>Valid Until:</strong> {{ warranty_until }}
         </div>
+        {% endif %}
     </div>
+    <h3>Active Pairing Keys</h3>
+    <table style="width:100%; border-collapse:collapse;">
+        <thead>
+            <tr style="background:#f0f0f0;">
+                <th style="padding:8px; border:1px solid #ccc;">Printer Name</th>
+                <th style="padding:8px; border:1px solid #ccc;">Pairing Key</th>
+                <th style="padding:8px; border:1px solid #ccc;">Valid Until</th>
+            </tr>
+        </thead>
+        <tbody>
+            {% for key in pairing_keys %}
+            <tr>
+                <td style="padding:8px; border:1px solid #ccc;">{{ key.printer_name }}</td>
+                <td style="padding:8px; border:1px solid #ccc; font-family:monospace;">{{ key.pairing_key }}</td>
+                <td style="padding:8px; border:1px solid #ccc;">{{ key.warranty_until }}</td>
+            </tr>
+            {% endfor %}
+        </tbody>
+    </table>
 </div>
-    </div>
-
-    <!-- Overview Card -->
-    <div class="row justify-content-center mb-4">
-        <div class="col-md-10">
-            <div class="card border-primary">
-                <div class="card-header bg-primary text-white">
-                    <h3 class="mb-0">🚀 Two Printing Solutions Available</h3>
-                </div>
-                <div class="card-body">
-                    <div class="row">
-                        <div class="col-md-6">
-                            <h5><EFBFBD> Chrome Extension (Recommended)</h5>
-                            <ul>
-                                <li>✅ <strong>Easy Setup</strong> - 2 minutes to install</li>
-                                <li>✅ <strong>Cross-Platform</strong> - Windows, Mac, Linux</li>
-                                <li>✅ <strong>User Control</strong> - Print dialog for printer selection</li>
-                                <li>✅ <strong>Zero Configuration</strong> - Works immediately</li>
-                                <li>✅ <strong>Secure</strong> - No external services needed</li>
-                            </ul>
-                        </div>
-                        <div class="col-md-6">
-                            <h5>🔧 Windows Service (Enterprise)</h5>
+<script>
+// Optionally add AJAX for key generation if you want dynamic updates
+</script>
                             <ul>
                                 <li>⚡ <strong>Silent Printing</strong> - No user interaction needed</li>
                                 <li><EFBFBD>️ <strong>Direct Printer Access</strong> - System-level printing</li>