115 lines
4 KiB
Dart
115 lines
4 KiB
Dart
import 'dart:io';
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import 'package:flutter/material.dart';
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import 'package:image_picker/image_picker.dart';
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import 'package:provider/provider.dart';
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import '../screens/confirm_fuel_entry_screen.dart';
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import '../services/app_state.dart';
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import '../services/ocr_service.dart';
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import '../services/receipt_parser.dart';
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import 'image_source_sheet.dart';
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/// Long edge and JPEG quality a receipt photo is downscaled to unless
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/// "keep max quality" is on — a receipt is a photo of small printed text,
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/// not something that benefits from a multi-megapixel original, and this
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/// keeps typical files in the low hundreds of KB instead of several MB.
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const receiptImageMaxDimension = 1600.0;
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const receiptImageQuality = 70;
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/// Shared by [VehicleDetailScreen]'s "Log Fuel Receipt" button and the
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/// Receipts tab's "+" action: pick a photo, OCR it, and — unless the
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/// receipt looks like it's from outside Missouri, in which case the user
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/// gets a chance to back out first — hand off to [ConfirmFuelEntryScreen]
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/// for [vehicleId].
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Future<void> captureReceiptForVehicle(BuildContext context, String vehicleId) async {
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final source = await chooseImageSource(context, heading: 'Receipt From');
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if (source == null || !context.mounted) return;
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final keepMaxQuality = context.read<AppState>().keepMaxQualityReceiptPhotos;
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final picker = ImagePicker();
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XFile? photo;
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try {
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photo = await picker.pickImage(
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source: source,
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imageQuality: keepMaxQuality ? null : receiptImageQuality,
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maxWidth: keepMaxQuality ? null : receiptImageMaxDimension,
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maxHeight: keepMaxQuality ? null : receiptImageMaxDimension,
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);
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} catch (e) {
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if (context.mounted) {
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final sourceLabel = source == ImageSource.camera ? 'camera' : 'photo library';
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text('Could not open $sourceLabel: $e')),
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);
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}
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return;
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}
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if (photo == null) return;
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final imageFile = File(photo.path);
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if (!context.mounted) return;
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showDialog(
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context: context,
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barrierDismissible: false,
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builder: (_) => const Center(child: CircularProgressIndicator()),
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);
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final ocrService = OcrService();
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String recognizedText = '';
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try {
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recognizedText = await ocrService.recognizeText(imageFile);
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} catch (_) {
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recognizedText = '';
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} finally {
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ocrService.dispose();
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}
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final parsed = ReceiptParser.parse(recognizedText);
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if (!context.mounted) return;
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Navigator.of(context).pop(); // close the OCR loading spinner
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final state = parsed.state;
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if (state != null && state != 'MO') {
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final proceed = await _confirmNonMissouriPurchase(context, state);
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if (!proceed || !context.mounted) return;
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}
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if (context.mounted) {
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Navigator.of(context).push(
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MaterialPageRoute(
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builder: (_) => ConfirmFuelEntryScreen(
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vehicleId: vehicleId,
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imageFile: imageFile,
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parsed: parsed,
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),
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),
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);
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}
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}
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/// Missouri's fuel tax refund only applies to fuel bought in Missouri —
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/// warn if the receipt's address is somewhere else, and let the user
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/// decide whether to log it anyway (e.g. it might still be worth tracking
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/// for other reasons even if it won't qualify for a refund).
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Future<bool> _confirmNonMissouriPurchase(BuildContext context, String stateCode) async {
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final stateName = usStateNames[stateCode] ?? stateCode;
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final proceed = await showDialog<bool>(
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context: context,
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builder: (context) => AlertDialog(
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title: const Text('Non-Missouri Purchase'),
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content: Text(
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'This receipt looks like it\'s from a gas station in $stateName. '
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'The Missouri fuel tax refund only applies to fuel purchased in '
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'Missouri.\n\nDo you still want to add this entry?',
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),
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actions: [
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TextButton(onPressed: () => Navigator.of(context).pop(false), child: const Text('No')),
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FilledButton(onPressed: () => Navigator.of(context).pop(true), child: const Text('Yes')),
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],
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),
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);
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return proceed ?? false;
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}
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