multiple receipts in a trip
This commit is contained in:
davmar
@@ -0,0 +1,188 @@
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/// Shared pick → crop → OCR → parse flow for adding a receipt to a trip.
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library;
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import 'dart:io';
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import 'dart:ui' as ui;
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:google_mlkit_text_recognition/google_mlkit_text_recognition.dart';
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import 'package:image_picker/image_picker.dart';
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import '../crop_receipt_screen.dart';
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import '../models/line_item.dart';
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import 'receipt_parser.dart';
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class CapturedReceiptParse {
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const CapturedReceiptParse({
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required this.items,
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required this.rawText,
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this.imagePath,
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this.needsReview = false,
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this.detectedStore,
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});
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final List<LineItem> items;
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final String rawText;
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final String? imagePath;
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final bool needsReview;
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final String? detectedStore;
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}
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/// Asks camera vs gallery, crops, runs OCR, and returns parsed items.
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///
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/// Returns null if the user cancels at any step.
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Future<CapturedReceiptParse?> captureAndParseReceipt(
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BuildContext context, {
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ImagePicker? picker,
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}) async {
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final source = await showModalBottomSheet<ImageSource>(
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context: context,
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showDragHandle: true,
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builder: (context) {
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return SafeArea(
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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ListTile(
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leading: const Icon(Icons.photo_camera_outlined),
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title: const Text('Take photo'),
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onTap: () => Navigator.pop(context, ImageSource.camera),
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),
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ListTile(
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leading: const Icon(Icons.photo_library_outlined),
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title: const Text('Pick from gallery'),
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onTap: () => Navigator.pop(context, ImageSource.gallery),
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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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if (source == null || !context.mounted) return null;
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final imagePicker = picker ?? ImagePicker();
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final file = await imagePicker.pickImage(source: source, imageQuality: 95);
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if (file == null || !context.mounted) return null;
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final croppedPath = await Navigator.of(context).push<String>(
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MaterialPageRoute(
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fullscreenDialog: true,
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builder: (_) => CropReceiptScreen(imagePath: file.path),
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),
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);
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if (croppedPath == null || !context.mounted) return null;
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return _runOcrAndParse(context, croppedPath);
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}
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Future<CapturedReceiptParse?> _runOcrAndParse(
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BuildContext context,
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String imagePath,
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) async {
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showDialog<void>(
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context: context,
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barrierDismissible: false,
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builder: (context) {
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return const PopScope(
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canPop: false,
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child: Center(
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child: Card(
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child: Padding(
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padding: EdgeInsets.all(24),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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CircularProgressIndicator(),
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SizedBox(height: 16),
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Text('Reading receipt…'),
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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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final recognizer = TextRecognizer(script: TextRecognitionScript.latin);
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try {
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final bytes = await File(imagePath).readAsBytes();
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final codec = await ui.instantiateImageCodec(bytes);
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final frame = await codec.getNextFrame();
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final imageWidth = frame.image.width.toDouble();
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final imageHeight = frame.image.height.toDouble();
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frame.image.dispose();
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final recognized = await recognizer.processImage(
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InputImage.fromFilePath(imagePath),
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);
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final rawText = recognized.text.trim();
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if (rawText.isEmpty) {
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if (context.mounted) {
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Navigator.of(context, rootNavigator: true).pop();
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(content: Text('No text found in this image.')),
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);
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}
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return null;
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}
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final parsed = ReceiptParser.parseRecognizedText(
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recognized,
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imageWidth: imageWidth,
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imageHeight: imageHeight,
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);
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if (context.mounted) {
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Navigator.of(context, rootNavigator: true).pop();
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}
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if (parsed.items.isEmpty) {
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if (context.mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(content: Text('No products found on this receipt.')),
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);
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}
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return null;
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}
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// Fresh ids so merged trips never collide with existing item keys.
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final stamp = DateTime.now().microsecondsSinceEpoch;
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final items = [
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for (var i = 0; i < parsed.items.length; i++)
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parsed.items[i].copyWith(id: 'merged-$stamp-$i'),
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];
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return CapturedReceiptParse(
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items: items,
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rawText: rawText,
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imagePath: imagePath,
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needsReview: !parsed.validationPassed,
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detectedStore: parsed.store,
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);
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} on PlatformException catch (error) {
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if (context.mounted) {
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Navigator.of(context, rootNavigator: true).pop();
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text(
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'Could not read text from this image.'
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'${error.message == null || error.message!.isEmpty ? '' : '\n${error.message}'}',
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),
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),
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);
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}
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return null;
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} catch (error) {
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if (context.mounted) {
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Navigator.of(context, rootNavigator: true).pop();
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text('Could not read text from this image.\n$error')),
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);
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}
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return null;
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} finally {
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await recognizer.close();
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}
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}
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@@ -132,20 +132,19 @@ class ReceiptParseConfig {
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/// True if [line] matches a config keyword.
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///
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/// Short tokens (3 characters or fewer) use a word boundary so `PIN` does
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/// not match `SPINAZIE`. Longer tokens use a case-insensitive substring,
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/// and a letter-only compact form so OCR splits like `Betaal d:` still
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/// match `BETAALD`.
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/// Always uses word boundaries so `CHIP` does not match `CHIPS` and `PIN`
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/// does not match `SPINAZIE`. A letter-only compact form is a fallback for
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/// OCR splits like `Betaal d:` → `BETAALD` (only for keywords of length ≥ 5,
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/// so short tokens like `CHIP` cannot match inside longer product words).
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bool matchesKeyword(String line, String keyword) {
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final upper = line.toUpperCase();
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final key = keyword.toUpperCase();
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if (key.length <= 3) {
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return RegExp('\\b${RegExp.escape(key)}\\b').hasMatch(upper);
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if (RegExp('\\b${RegExp.escape(key)}\\b').hasMatch(upper)) {
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return true;
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}
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if (upper.contains(key)) return true;
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final compactLine = upper.replaceAll(RegExp(r'[^A-Z0-9]'), '');
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final compactKey = key.replaceAll(RegExp(r'[^A-Z0-9]'), '');
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return compactKey.length >= 4 && compactLine.contains(compactKey);
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return compactKey.length >= 5 && compactLine.contains(compactKey);
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}
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bool isStandaloneKeywordLine(String line, List<String> keywords) {
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