feat: add edit session header, fix css conflicts with cs-scan-row prefix

modules/conssheets/routes.py

@@ -773,6 +773,91 @@ def register_routes(bp):
                               header_fields=header_fields,
                               form_data={})
     
+    @bp.route('/session/<int:session_id>/edit-header', methods=['GET', 'POST'])
+    @login_required
+    def edit_session_header(session_id):
+        """Edit header fields for an existing session"""
+        sess = query_db('''
+            SELECT cs.*, cp.process_name, cp.process_key, cp.id as process_id
+            FROM cons_sessions cs
+            JOIN cons_processes cp ON cs.process_id = cp.id
+            WHERE cs.id = ?
+        ''', [session_id], one=True)
+        
+        if not sess:
+            flash('Session not found', 'danger')
+            return redirect(url_for('conssheets.index'))
+        
+        # Check permission
+        if sess['created_by'] != session['user_id'] and session['role'] not in ['owner', 'admin']:
+            flash('Permission denied', 'danger')
+            return redirect(url_for('conssheets.index'))
+        
+        # Get header fields
+        header_fields = query_db('''
+            SELECT * FROM cons_process_fields
+            WHERE process_id = ? AND table_type = 'header' AND is_active = 1
+            ORDER BY sort_order, id
+        ''', [sess['process_id']])
+        
+        # Get existing values
+        existing_values = query_db('''
+            SELECT cpf.field_name, cshv.field_value
+            FROM cons_process_fields cpf
+            LEFT JOIN cons_session_header_values cshv
+                ON cpf.id = cshv.field_id AND cshv.session_id = ?
+            WHERE cpf.process_id = ? AND cpf.table_type = 'header' AND cpf.is_active = 1
+        ''', [session_id, sess['process_id']])
+        
+        # Build form_data dict from existing values
+        form_data = {row['field_name']: row['field_value'] for row in existing_values if row['field_value']}
+        
+        if request.method == 'POST':
+            # Validate required fields
+            missing_required = []
+            for field in header_fields:
+                if field['is_required']:
+                    value = request.form.get(field['field_name'], '').strip()
+                    if not value:
+                        missing_required.append(field['field_label'])
+            
+            if missing_required:
+                flash(f'Required fields missing: {", ".join(missing_required)}', 'danger')
+                return render_template('conssheets/new_session.html',
+                                      process=sess,
+                                      header_fields=header_fields,
+                                      form_data=request.form,
+                                      edit_mode=True,
+                                      session_id=session_id)
+            
+            # Update header field values
+            for field in header_fields:
+                value = request.form.get(field['field_name'], '').strip()
+                existing = query_db(
+                    'SELECT id FROM cons_session_header_values WHERE session_id = ? AND field_id = ?',
+                    [session_id, field['id']], one=True
+                )
+                if existing:
+                    execute_db(
+                        'UPDATE cons_session_header_values SET field_value = ? WHERE session_id = ? AND field_id = ?',
+                        [value, session_id, field['id']]
+                    )
+                else:
+                    if value:
+                        execute_db(
+                            'INSERT INTO cons_session_header_values (session_id, field_id, field_value) VALUES (?, ?, ?)',
+                            [session_id, field['id'], value]
+                        )
+            
+            flash('Header updated successfully!', 'success')
+            return redirect(url_for('conssheets.scan_session', session_id=session_id))
+        
+        return render_template('conssheets/new_session.html',
+                              process=sess,
+                              header_fields=header_fields,
+                              form_data=form_data,
+                              edit_mode=True,
+                              session_id=session_id)
     
     @bp.route('/session/<int:session_id>')
     @login_required
@@ -833,6 +918,41 @@ def register_routes(bp):
                               dup_key_field=dup_key_field)
     
     
+    @bp.route('/session/<int:session_id>/update-header', methods=['POST'])
+    @login_required
+    def update_session_header(session_id):
+        """Update header field values for a session"""
+        sess = query_db('SELECT * FROM cons_sessions WHERE id = ?', [session_id], one=True)
+        
+        if not sess:
+            return jsonify({'success': False, 'message': 'Session not found'})
+        
+        # Check permission
+        if sess['created_by'] != session['user_id'] and session['role'] not in ['owner', 'admin']:
+            return jsonify({'success': False, 'message': 'Permission denied'})
+        
+        data = request.get_json()
+        field_values = data.get('field_values', {})
+        
+        for field_id, field_value in field_values.items():
+            # Check if value already exists
+            existing = query_db(
+                'SELECT id FROM cons_session_header_values WHERE session_id = ? AND field_id = ?',
+                [session_id, field_id], one=True
+            )
+            if existing:
+                execute_db(
+                    'UPDATE cons_session_header_values SET field_value = ? WHERE session_id = ? AND field_id = ?',
+                    [field_value, session_id, field_id]
+                )
+            else:
+                execute_db(
+                    'INSERT INTO cons_session_header_values (session_id, field_id, field_value) VALUES (?, ?, ?)',
+                    [session_id, field_id, field_value]
+                )
+        
+        return jsonify({'success': True})
+
     @bp.route('/session/<int:session_id>/scan', methods=['POST'])
     @login_required
     def scan_lot(session_id):