update print ui and report dashboard

lib/presentation/components/print/print_ui.dart

@@ -36,7 +36,7 @@ class PrintUi {
 
     bytes += builder.orderInfo(
       orderNumber: order.orderNumber,
-      customerName: order.metadata['customer_name'] ?? 'John Doe',
+      customerName: order.metadata['customer_name'] ?? '-',
       cashierName: cashierName,
       paymentMethod: order.payments.last.paymentMethodName,
       tableNumber: order.tableNumber,
@@ -103,7 +103,7 @@ class PrintUi {
     bytes += builder.dateTime(DateTime.now());
     bytes += builder.orderInfo(
       orderNumber: order.orderNumber,
-      customerName: order.metadata['customer_name'] ?? 'John Doe',
+      customerName: order.metadata['customer_name'] ?? '-',
       cashierName: cashierName,
       paymentMethod: order.payments.isEmpty
           ? ''
@@ -159,7 +159,7 @@ class PrintUi {
       bytes += builder.dateTime(DateTime.now());
       bytes += builder.orderInfo(
         orderNumber: order.orderNumber,
-        customerName: order.metadata['customer_name'] ?? 'John Doe',
+        customerName: order.metadata['customer_name'] ?? '-',
         cashierName: cashierName,
         tableNumber: order.tableNumber,
       );
@@ -210,7 +210,7 @@ class PrintUi {
       bytes += builder.dateTime(DateTime.now());
       bytes += builder.orderInfo(
         orderNumber: order.orderNumber,
-        customerName: order.metadata['customer_name'] ?? 'John Doe',
+        customerName: order.metadata['customer_name'] ?? '-',
         cashierName: cashierName,
         tableNumber: order.tableNumber,
       );
@@ -304,7 +304,7 @@ class PrintUi {
 
     bytes += builder.orderInfo(
       orderNumber: order.orderNumber,
-      customerName: order.metadata['customer_name'] ?? 'John Doe',
+      customerName: order.metadata['customer_name'] ?? '-',
       cashierName: cashierName,
       paymentMethod: order.payments.isEmpty
           ? null
@@ -370,7 +370,7 @@ class PrintUi {
 
     bytes += builder.orderInfo(
       orderNumber: order.orderNumber,
-      customerName: order.metadata['customer_name'] ?? 'John Doe',
+      customerName: order.metadata['customer_name'] ?? '-',
       cashierName: cashierName,
       paymentMethod: order.payments.isEmpty
           ? null
@@ -435,7 +435,7 @@ class PrintUi {
 
     bytes += builder.orderInfo(
       orderNumber: order.orderNumber,
-      customerName: order.metadata['customer_name'] ?? 'John Doe',
+      customerName: order.metadata['customer_name'] ?? '-',
       cashierName: cashierName,
       paymentMethod: order.payments.isEmpty
           ? null

lib/presentation/pages/main/pages/report/widgets/dashboard/report_dashboard_sales_chart.dart

@@ -109,9 +109,10 @@ class ReportDashboardSalesChart extends StatelessWidget {
                   bottomTitles: AxisTitles(
                     sideTitles: SideTitles(
                       showTitles: true,
-                      interval:
-                          (maxX - minX) /
-                          (sortedSales.length > 6 ? 6 : sortedSales.length),
+                      interval: sortedSales.length <= 1
+                          ? 1
+                          : (maxX - minX) /
+                              (sortedSales.length > 6 ? 6 : sortedSales.length),
                       getTitlesWidget: (value, meta) {
                         final date = DateTime.fromMillisecondsSinceEpoch(
                           value.toInt(),