feat: dukung penjualan produk per timbangan
Produk kini punya cara jual `unit` (cacah) atau `weight` (timbangan), mengikuti kontrak backend di docs/integration-weight-based-products.md. - tipe SellBy, domain/infrastructure unit baru, dan endpoint /api/v1/units - dialog input berat saat produk timbangan ditambahkan ke keranjang - tiap penimbangan jadi baris keranjang sendiri; total baris dihitung berat x harga satuan, sedangkan produk cacah tetap digabung - request ke backend mengirim quantity 1 dan membawa berat - migrasi DB v3: kolom sell_by, unit_id, unit_name, unit_abbreviation di tabel products supaya satuan tetap tampil saat offline - tampilan keranjang, struk, split bill, void, dan refund memakai berat - test/weight_based_products_test.dart menutup perilaku di atas (9 test) Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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@@ -21,10 +21,33 @@ class VariantDialog extends StatelessWidget {
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return GestureDetector(
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onTap: () {
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// Aksi saat varian dipilih
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context.maybePop();
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context.read<CheckoutFormBloc>().add(
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CheckoutFormEvent.addItem(product, variant),
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);
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final bloc = context.read<CheckoutFormBloc>();
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// Context dialog ini mati begitu di-pop, jadi dialog lanjutan
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// dibuka lewat context milik Navigator.
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final navigator = Navigator.of(context, rootNavigator: true);
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navigator.pop();
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// Produk timbangan lanjut ke papan angka; varian hanya mengubah
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// harga per satuannya.
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if (product.isSoldByWeight) {
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showDialog(
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context: navigator.context,
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builder: (context) => WeightInputDialog(
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product: product,
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variant: variant,
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onSubmit: (weight) => bloc.add(
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CheckoutFormEvent.addWeightedItem(
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product,
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variant,
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weight,
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),
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),
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),
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);
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return;
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}
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bloc.add(CheckoutFormEvent.addItem(product, variant));
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},
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child: Container(
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width: (context.deviceWidth * 0.4 - 12 - 32) / 2 - 6, // 2 per row
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