103 lines
2.7 KiB
Dart
103 lines
2.7 KiB
Dart
import 'dart:io';
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import 'dart:typed_data';
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import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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import '../services/app_state.dart';
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/// Full-screen, pinch-zoomable view of a receipt photo. Pass
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/// [localImagePath] for a receipt still held locally, or [driveFileId] for
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/// one already uploaded to the cloud and removed locally — in which case
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/// it's downloaded on demand (no local caching afterward).
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class ReceiptImageScreen extends StatefulWidget {
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final String? localImagePath;
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final String? driveFileId;
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const ReceiptImageScreen({super.key, this.localImagePath, this.driveFileId})
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: assert(localImagePath != null || driveFileId != null,
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'Must provide either a local path or a Drive file ID');
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@override
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State<ReceiptImageScreen> createState() => _ReceiptImageScreenState();
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}
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class _ReceiptImageScreenState extends State<ReceiptImageScreen> {
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Uint8List? _downloadedBytes;
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bool _loading = false;
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String? _error;
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@override
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void initState() {
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super.initState();
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if (widget.driveFileId != null) {
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_download();
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}
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}
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Future<void> _download() async {
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setState(() {
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_loading = true;
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_error = null;
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});
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final provider = context.read<AppState>().activeProvider;
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if (provider == null) {
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setState(() {
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_error = 'Not connected to a cloud storage provider.';
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_loading = false;
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});
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return;
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}
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final session = provider.beginSession();
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try {
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final bytes = await session.downloadFileBytes(widget.driveFileId!);
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if (!mounted) return;
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setState(() {
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_downloadedBytes = Uint8List.fromList(bytes);
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_loading = false;
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});
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} catch (e) {
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if (!mounted) return;
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setState(() {
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_error = 'Could not download receipt: $e';
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_loading = false;
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});
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} finally {
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session.close();
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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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return Scaffold(
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backgroundColor: Colors.black,
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appBar: AppBar(
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backgroundColor: Colors.black,
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foregroundColor: Colors.white,
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title: const Text('Receipt'),
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),
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body: Center(child: _buildBody()),
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);
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}
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Widget _buildBody() {
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if (widget.localImagePath != null) {
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return InteractiveViewer(child: Image.file(File(widget.localImagePath!)));
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}
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if (_loading) {
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return const CircularProgressIndicator(color: Colors.white);
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}
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if (_error != null) {
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return Padding(
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padding: const EdgeInsets.all(24),
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child: Text(_error!, style: const TextStyle(color: Colors.white)),
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);
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}
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if (_downloadedBytes != null) {
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return InteractiveViewer(child: Image.memory(_downloadedBytes!));
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}
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return const SizedBox.shrink();
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}
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}
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