Kasir Grosir: starter Flutter POS (scaffold awal)

lib/screens/accounts_receivable.dart

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+import 'package:flutter/material.dart';
+import '../widgets/template_screen.dart';
+import '../widgets/app_drawer.dart';
+
+class AccountsReceivableScreen extends StatelessWidget {
+  const AccountsReceivableScreen({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return const TemplateScreen(
+      title: 'Accounts Receivable',
+      drawer: AppDrawer(),
+      body: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text('Piutang (AR)', style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
+          SizedBox(height: 12),
+          Text('TODO: Invoices, partial payments, aging report.'),
+          SizedBox(height: 12),
+          Text('Catatan:'),
+          Text('- Implement invoice model and payment entries.'),
+        ],
+      ),
+    );
+  }
+}

lib/screens/customers.dart

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+import 'package:flutter/material.dart';
+import '../widgets/template_screen.dart';
+import '../widgets/app_drawer.dart';
+
+class CustomersScreen extends StatelessWidget {
+  const CustomersScreen({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return const TemplateScreen(
+      title: 'Customers',
+      drawer: AppDrawer(),
+      body: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text('Pelanggan', style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
+          SizedBox(height: 12),
+          Text('TODO: Customer list, price tier, credit limit, contact info.'),
+          SizedBox(height: 12),
+          Text('Catatan:'),
+          Text('- Simpan informasi credit limit & term_days untuk AR.'),
+          Text('- Integrate quick select from POS.'),
+        ],
+      ),
+    );
+  }
+}

lib/screens/dashboard.dart

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+import 'package:flutter/material.dart';
+import '../widgets/template_screen.dart';
+import '../widgets/app_drawer.dart';
+
+class DashboardScreen extends StatelessWidget {
+  const DashboardScreen({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return const TemplateScreen(
+      title: 'Dashboard',
+      drawer: AppDrawer(),
+      body: SingleChildScrollView(
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Text('Ringkasan Harian', style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
+            SizedBox(height: 12),
+            Text('- Penjualan hari ini: TODO (implement)') ,
+            Text('- Piutang terutang: TODO (implement)'),
+            Text('- Stok kritis: TODO (implement)'),
+            SizedBox(height: 24),
+            Text('Catatan:', style: TextStyle(fontWeight: FontWeight.bold)),
+            Text('1. Ambil data penjualan lokal (SQLite) dan agregasi untuk ringkasan.'),
+            Text('2. Buat widget chart sederhana setelah data tersedia.'),
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/screens/inventory.dart

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+import 'package:flutter/material.dart';
+import '../widgets/template_screen.dart';
+import '../widgets/app_drawer.dart';
+
+class InventoryScreen extends StatelessWidget {
+  const InventoryScreen({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return const TemplateScreen(
+      title: 'Inventory',
+      drawer: AppDrawer(),
+      body: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text('Stok & Warehousing', style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
+          SizedBox(height: 12),
+          Text('TODO: Multi-warehouse, stock adjustment, transfers.'),
+          SizedBox(height: 12),
+          Text('Catatan:'),
+          Text('- Keep stock movements log for audit.'),
+        ],
+      ),
+    );
+  }
+}

lib/screens/pos.dart

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+import 'package:flutter/material.dart';
+import '../widgets/template_screen.dart';
+import '../widgets/app_drawer.dart';
+
+class PosScreen extends StatelessWidget {
+  const PosScreen({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return TemplateScreen(
+      title: 'POS',
+      drawer: const AppDrawer(),
+      fab: FloatingActionButton(
+        onPressed: () {},
+        tooltip: 'New Transaction',
+        child: const Icon(Icons.add),
+      ),
+      body: Column(
+        children: [
+          Card(
+            child: Padding(
+              padding: const EdgeInsets.all(12.0),
+              child: Row(
+                children: const [
+                  Icon(Icons.search),
+                  SizedBox(width: 8),
+                  Expanded(child: TextField(decoration: InputDecoration.collapsed(hintText: 'Search products'))),
+                ],
+              ),
+            ),
+          ),
+          const SizedBox(height: 12),
+          Expanded(
+            child: GridView.builder(
+              itemCount: 12,
+              gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(crossAxisCount: 3, childAspectRatio: 0.9),
+              itemBuilder: (context, i) {
+                return Card(
+                  child: InkWell(
+                    onTap: () {},
+                    child: Center(child: Text('Product ${i + 1}', textAlign: TextAlign.center)),
+                  ),
+                );
+              },
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/screens/products.dart

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+import 'package:flutter/material.dart';
+import '../widgets/template_screen.dart';
+import '../widgets/app_drawer.dart';
+
+class ProductsScreen extends StatelessWidget {
+  const ProductsScreen({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return const TemplateScreen(
+      title: 'Products',
+      drawer: AppDrawer(),
+      body: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text('Produk / Katalog', style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
+          SizedBox(height: 12),
+          Text('TODO: Implement CRUD produk (SKU, barcode, harga, stok, unit, pack).'),
+          SizedBox(height: 12),
+          Text('Catatan:'),
+          Text('- Buat Room/SQLite entity untuk product.'),
+          Text('- Tambahkan import CSV untuk bulk upload.'),
+        ],
+      ),
+    );
+  }
+}

lib/screens/purchase_orders.dart

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+import 'package:flutter/material.dart';
+import '../widgets/template_screen.dart';
+import '../widgets/app_drawer.dart';
+
+class PurchaseOrdersScreen extends StatelessWidget {
+  const PurchaseOrdersScreen({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return const TemplateScreen(
+      title: 'Purchase Orders',
+      drawer: AppDrawer(),
+      body: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text('Purchase Orders', style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
+          SizedBox(height: 12),
+          Text('TODO: Create PO, receive partial/full, update stock & cost.'),
+          SizedBox(height: 12),
+          Text('Catatan:'),
+          Text('- Track expected_date & received_status.'),
+        ],
+      ),
+    );
+  }
+}

lib/screens/reports.dart

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+import 'package:flutter/material.dart';
+import '../widgets/template_screen.dart';
+import '../widgets/app_drawer.dart';
+
+class ReportsScreen extends StatelessWidget {
+  const ReportsScreen({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return const TemplateScreen(
+      title: 'Reports',
+      drawer: AppDrawer(),
+      body: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text('Laporan', style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
+          SizedBox(height: 12),
+          Text('TODO: Sales per day, per product, AR aging, inventory valuation.'),
+          SizedBox(height: 12),
+          Text('Catatan:'),
+          Text('- Start with CSV export and simple list views.'),
+        ],
+      ),
+    );
+  }
+}

lib/screens/settings.dart

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+import 'package:flutter/material.dart';
+import '../widgets/template_screen.dart';
+import '../widgets/app_drawer.dart';
+
+class SettingsScreen extends StatelessWidget {
+  const SettingsScreen({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return const TemplateScreen(
+      title: 'Settings',
+      drawer: AppDrawer(),
+      body: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text('Pengaturan', style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
+          SizedBox(height: 12),
+          Text('TODO: Store profile, tax settings, printer config, backup/restore.'),
+          SizedBox(height: 12),
+          Text('Catatan:'),
+          Text('- Add page to configure Bluetooth printer later.'),
+        ],
+      ),
+    );
+  }
+}

lib/screens/suppliers.dart

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+import 'package:flutter/material.dart';
+import '../widgets/template_screen.dart';
+import '../widgets/app_drawer.dart';
+
+class SuppliersScreen extends StatelessWidget {
+  const SuppliersScreen({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return const TemplateScreen(
+      title: 'Suppliers',
+      drawer: AppDrawer(),
+      body: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text('Supplier', style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
+          SizedBox(height: 12),
+          Text('TODO: Supplier master, PO creation and contact info.'),
+          SizedBox(height: 12),
+          Text('Catatan:'),
+          Text('- Implement PO flow: create, send, receive.'),
+        ],
+      ),
+    );
+  }
+}

lib/screens/users.dart

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+import 'package:flutter/material.dart';
+import '../widgets/template_screen.dart';
+import '../widgets/app_drawer.dart';
+
+class UsersScreen extends StatelessWidget {
+  const UsersScreen({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return const TemplateScreen(
+      title: 'Users',
+      drawer: AppDrawer(),
+      body: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text('User Management', style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
+          SizedBox(height: 12),
+          Text('TODO: Roles & permissions (admin, kasir, gudang, sales).'),
+          SizedBox(height: 12),
+          Text('Catatan:'),
+          Text('- Implement simple local PIN auth for kasir initially.'),
+        ],
+      ),
+    );
+  }
+}

lib/screens/utilities.dart

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+import 'package:flutter/material.dart';
+import '../widgets/template_screen.dart';
+import '../widgets/app_drawer.dart';
+
+class UtilitiesScreen extends StatelessWidget {
+  const UtilitiesScreen({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return const TemplateScreen(
+      title: 'Utilities',
+      drawer: AppDrawer(),
+      body: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text('Utilities', style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
+          SizedBox(height: 12),
+          Text('TODO: Import/Export CSV, label printing, backup/restore.'),
+          SizedBox(height: 12),
+          Text('Catatan:'),
+          Text('- Provide CSV templates for bulk import.'),
+        ],
+      ),
+    );
+  }
+}