481 lines
16 KiB
Dart
481 lines
16 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import '../../../app/providers.dart';
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import '../../../core/constants/app_constants.dart';
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import '../../../core/theme/app_colors.dart';
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import '../../../core/theme/app_dimens.dart';
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import '../../../core/theme/app_typography.dart';
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import '../../../core/widgets/numeric_keypad.dart';
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import '../../../core/widgets/primary_button.dart';
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import '../../../domain/entities/customer.dart';
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import '../../pos/providers/cart_controller.dart';
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/// Attaches a customer to the current bill: a mobile number, a name, or
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/// neither.
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///
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/// Deliberately not a lookup screen. There is no search against the customers
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/// already on the terminal, no recent list, and no membership tier — a cashier
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/// at a queue keys the number, keys the name if the shopper gives one, and
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/// carries on. A number that turns out to be registered already is reused
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/// silently rather than being turned into a decision the counter has to make.
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///
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/// Nothing here blocks the sale: Skip closes it with a walk-in bill.
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Future<void> showCustomerCaptureSheet(BuildContext context) {
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return showModalBottomSheet<void>(
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context: context,
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isScrollControlled: true,
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backgroundColor: Colors.transparent,
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builder: (_) => const _CustomerCaptureSheet(),
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);
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}
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class _CustomerCaptureSheet extends ConsumerStatefulWidget {
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const _CustomerCaptureSheet();
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@override
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ConsumerState<_CustomerCaptureSheet> createState() =>
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_CustomerCaptureSheetState();
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}
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class _CustomerCaptureSheetState extends ConsumerState<_CustomerCaptureSheet> {
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String _digits = '';
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final _name = TextEditingController();
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bool _saving = false;
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String? _error;
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bool get _complete => _digits.length == AppConstants.mobileNumberLength;
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@override
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void dispose() {
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_name.dispose();
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super.dispose();
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}
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void _append(String d) {
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if (_digits.length >= AppConstants.mobileNumberLength) return;
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setState(() {
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_digits += d;
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_error = null;
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});
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}
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void _backspace() {
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if (_digits.isEmpty) return;
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setState(() {
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_digits = _digits.substring(0, _digits.length - 1);
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_error = null;
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});
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}
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void _clear() {
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setState(() {
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_digits = '';
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_error = null;
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});
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}
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void _attachAndClose(Customer? customer) {
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ref.read(cartControllerProvider.notifier).attachCustomer(customer);
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Navigator.of(context).pop();
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}
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/// Saves the number under the name given, then puts it on the bill.
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///
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/// The name is optional — a bare number is still worth keeping, because it
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/// is what the WhatsApp bill is sent to.
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///
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/// A number already on file is the ordinary case, not an error: the existing
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/// record is picked up and attached, and a freshly typed name is written
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/// over the stored one so a correction at the counter sticks. The cashier
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/// sees the same thing either way, which is the point of not having a lookup
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/// step.
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Future<void> _save() async {
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if (!_complete) {
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setState(() => _error = 'Enter all '
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'${AppConstants.mobileNumberLength} digits of the mobile number.');
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return;
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}
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final typed = _name.text.trim();
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final name = typed.isEmpty
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? 'Customer ${_digits.substring(_digits.length - 4)}'
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: typed;
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setState(() {
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_saving = true;
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_error = null;
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});
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final repo = ref.read(customerRepositoryProvider);
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try {
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final created = await repo.create(
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Customer(id: '', name: name, mobile: _digits),
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);
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if (mounted) _attachAndClose(created);
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} on StateError {
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// Already registered. Reuse the row rather than making the counter
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// reconcile it.
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try {
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final existing = await repo.findByMobile(_digits);
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if (existing == null) throw StateError('lookup failed');
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final updated = typed.isEmpty || typed == existing.name
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? existing
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: await repo.update(existing.copyWith(name: typed));
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if (mounted) _attachAndClose(updated);
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} catch (_) {
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if (!mounted) return;
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setState(() {
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_saving = false;
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_error = 'Could not save customer. Try again.';
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});
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}
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} catch (_) {
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if (!mounted) return;
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setState(() {
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_saving = false;
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_error = 'Could not save customer. Try again.';
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});
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}
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}
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@override
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Widget build(BuildContext context) {
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final attached = ref.watch(
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cartControllerProvider.select((c) => c.customer),
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);
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return Padding(
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padding: EdgeInsets.only(bottom: MediaQuery.viewInsetsOf(context).bottom),
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child: Container(
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constraints: BoxConstraints(
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maxHeight: MediaQuery.sizeOf(context).height * 0.9,
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),
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decoration: const BoxDecoration(
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color: AppColors.surface,
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borderRadius:
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BorderRadius.vertical(top: Radius.circular(AppRadius.xxl)),
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),
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child: SafeArea(
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top: false,
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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_grabber(),
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// Everything inside is capped and centred. A modal sheet on a
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// 27-inch till used to run the full width of the screen, which
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// put the keypad and the fields at opposite ends of the desk.
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Flexible(
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child: Center(
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child: ConstrainedBox(
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constraints: const BoxConstraints(maxWidth: 900),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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_header(attached),
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const Divider(height: 1),
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Flexible(
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child: SingleChildScrollView(
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padding: const EdgeInsets.fromLTRB(
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AppSpacing.xxl,
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AppSpacing.xl,
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AppSpacing.xxl,
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AppSpacing.xxl,
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),
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child: LayoutBuilder(
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builder: (context, box) {
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// Side by side once there is room for both.
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final wide = box.maxWidth >= 660;
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final entry = _entryColumn();
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final details = _detailsColumn();
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if (!wide) {
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return Column(
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children: [
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entry,
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const SizedBox(height: AppSpacing.xl),
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details,
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],
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);
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}
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return Row(
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crossAxisAlignment:
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CrossAxisAlignment.start,
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children: [
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SizedBox(width: 300, child: entry),
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const SizedBox(width: AppSpacing.xxl),
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Expanded(child: details),
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],
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);
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},
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),
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),
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),
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],
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),
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),
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),
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),
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],
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),
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),
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),
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);
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}
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Widget _grabber() => Container(
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width: 40,
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height: 4,
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margin: const EdgeInsets.symmetric(vertical: AppSpacing.md),
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decoration: const BoxDecoration(
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color: AppColors.border,
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borderRadius: AppRadius.brPill,
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),
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);
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Widget _header(Customer? attached) => Padding(
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padding: const EdgeInsets.fromLTRB(
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AppSpacing.xxl,
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0,
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AppSpacing.lg,
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AppSpacing.lg,
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),
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child: Row(
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children: [
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Container(
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width: 40,
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height: 40,
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decoration: BoxDecoration(
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color: AppColors.primarySurface,
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borderRadius: AppRadius.brSm,
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border: Border.all(color: AppColors.primaryBorder),
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),
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child: const Icon(Icons.person_add_alt_1_outlined,
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size: 20, color: AppColors.primary,),
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),
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const SizedBox(width: AppSpacing.md),
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Expanded(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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mainAxisSize: MainAxisSize.min,
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children: [
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Text(
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attached == null ? 'Add customer' : 'Change customer',
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overflow: TextOverflow.ellipsis,
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style: const TextStyle(
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fontSize: 18,
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fontWeight: FontWeight.w600,
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letterSpacing: -0.3,
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color: AppColors.textPrimary,
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height: 1.2,
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),
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),
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const Text(
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'Optional — number and name, or skip',
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overflow: TextOverflow.ellipsis,
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style: TextStyle(
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fontSize: 12.5,
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color: AppColors.textSecondary,
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),
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),
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],
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),
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),
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const SizedBox(width: AppSpacing.sm),
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TextButton(
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onPressed: _saving ? null : () => _attachAndClose(null),
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style: TextButton.styleFrom(
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foregroundColor: AppColors.textSecondary,
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minimumSize: const Size(0, 38),
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),
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child: const Text('Skip'),
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),
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IconButton(
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onPressed: _saving ? null : () => Navigator.of(context).pop(),
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icon: const Icon(Icons.close_rounded),
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color: AppColors.textTertiary,
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tooltip: 'Close',
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),
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],
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),
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);
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// ----------------------------------------------------------------- Entry
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Widget _entryColumn() => Column(
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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_display(),
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const SizedBox(height: AppSpacing.sm),
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Text(
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_complete
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? 'Number complete'
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: '${AppConstants.mobileNumberLength - _digits.length} more '
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'digit(s)',
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textAlign: TextAlign.center,
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style: const TextStyle(
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fontSize: 11.5,
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color: AppColors.textTertiary,
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),
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),
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const SizedBox(height: AppSpacing.lg),
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Center(
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child: NumericKeypad(
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maxWidth: 300,
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onKey: _append,
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onBackspace: _backspace,
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onClear: _clear,
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),
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),
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],
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);
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/// The number as it is keyed, grouped 5 + 5 the way it is read aloud.
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Widget _display() {
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final filled = _digits.isNotEmpty;
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final head = _digits.length <= 5 ? _digits : _digits.substring(0, 5);
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final tail = _digits.length <= 5 ? '' : _digits.substring(5);
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return Container(
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height: 64,
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padding: const EdgeInsets.only(left: AppSpacing.md, right: AppSpacing.xs),
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decoration: BoxDecoration(
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color: filled ? AppColors.surface : AppColors.surfaceAlt,
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borderRadius: AppRadius.brLg,
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border: Border.all(
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color: filled ? AppColors.primary : AppColors.border,
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width: filled ? 1.4 : 1,
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),
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),
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child: Row(
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children: [
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Container(
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padding: const EdgeInsets.symmetric(
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horizontal: AppSpacing.sm,
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vertical: 3,
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),
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decoration: const BoxDecoration(
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color: AppColors.surfaceAlt,
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borderRadius: AppRadius.brXs,
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),
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child: const Text(
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'+91',
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style: TextStyle(
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fontSize: 13,
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fontWeight: FontWeight.w700,
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color: AppColors.textSecondary,
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),
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),
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),
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const SizedBox(width: AppSpacing.md),
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Expanded(
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child: FittedBox(
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fit: BoxFit.scaleDown,
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alignment: Alignment.centerLeft,
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child: filled
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? Text(
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tail.isEmpty ? head : '$head $tail',
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style: AppTypography.money(23).copyWith(
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letterSpacing: 1.5,
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color: AppColors.textPrimary,
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),
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)
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: Text(
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'Mobile number',
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style: TextStyle(
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fontSize: 16,
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color: AppColors.textTertiary.withValues(alpha: 0.9),
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),
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),
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),
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),
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if (filled)
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IconButton(
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onPressed: _saving ? null : _clear,
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icon: const Icon(Icons.backspace_outlined, size: 18),
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color: AppColors.textTertiary,
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tooltip: 'Clear',
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),
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],
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),
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);
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}
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// --------------------------------------------------------------- Details
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Widget _detailsColumn() => Column(
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crossAxisAlignment: CrossAxisAlignment.stretch,
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mainAxisSize: MainAxisSize.min,
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children: [
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_hint(),
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const SizedBox(height: AppSpacing.lg),
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TextField(
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controller: _name,
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textCapitalization: TextCapitalization.words,
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enabled: !_saving,
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onSubmitted: (_) => _save(),
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inputFormatters: [LengthLimitingTextInputFormatter(60)],
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decoration: const InputDecoration(
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labelText: 'Customer name',
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hintText: 'Optional',
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prefixIcon: Icon(Icons.person_outline_rounded),
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),
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),
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if (_error != null) ...[
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const SizedBox(height: AppSpacing.sm),
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Text(
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_error!,
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style: const TextStyle(color: AppColors.danger, fontSize: 12.5),
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),
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],
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const SizedBox(height: AppSpacing.lg),
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PrimaryButton(
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label: 'Save & use',
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icon: Icons.person_add_alt_1_rounded,
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large: true,
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busy: _saving,
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onPressed: _complete && !_saving ? _save : null,
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),
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const SizedBox(height: AppSpacing.sm),
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PrimaryButton(
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label: 'Skip — no customer',
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tone: ButtonTone.neutral,
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onPressed: _saving ? null : () => _attachAndClose(null),
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),
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],
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);
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Widget _hint() => Container(
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width: double.infinity,
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padding: const EdgeInsets.all(AppSpacing.lg),
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decoration: BoxDecoration(
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color: AppColors.surfaceAlt,
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borderRadius: AppRadius.brLg,
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border: Border.all(color: AppColors.border),
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),
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child: const Row(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Icon(Icons.dialpad_rounded,
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size: 19, color: AppColors.textTertiary,),
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SizedBox(width: AppSpacing.md),
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Expanded(
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child: Text(
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'Key in the mobile number, add a name if the shopper gives '
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'one, then save. The name is optional and the whole step can '
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'be skipped — the sale is never held up by it.',
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style: TextStyle(
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fontSize: 13,
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color: AppColors.textSecondary,
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height: 1.5,
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),
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),
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),
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],
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),
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);
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}
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