113 lines
3.3 KiB
Dart
113 lines
3.3 KiB
Dart
import 'package:flutter/material.dart';
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import '../models/app_version.dart';
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import '../services/app_update_service.dart';
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/// A reusable dialog that can render both flexible and forced updates and
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/// report download progress. Callers should wrap this with `showDialog` and
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/// control ``barrierDismissible`` according to ``info.isForceUpdate``.
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class UpdateDialog extends StatefulWidget {
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final AppUpdateInfo info;
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const UpdateDialog({required this.info, super.key});
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@override
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State<UpdateDialog> createState() => _UpdateDialogState();
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}
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class _UpdateDialogState extends State<UpdateDialog> {
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double _progress = 0;
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bool _downloading = false;
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bool _failed = false;
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Future<void> _startDownload() async {
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setState(() {
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_downloading = true;
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_failed = false;
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});
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try {
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await AppUpdateService.instance.downloadAndInstallApk(
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widget.info.latestVersion!.downloadUrl,
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onProgress: (p) => setState(() => _progress = p),
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);
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// once the installer launches the app is likely to be stopped; we
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// don't pop the dialog explicitly.
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} catch (err) {
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if (!mounted) return;
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setState(() {
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_failed = true;
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_downloading = false;
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});
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ScaffoldMessenger.of(
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context,
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).showSnackBar(SnackBar(content: Text('Download failed: $err')));
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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 notes = widget.info.latestVersion?.releaseNotes ?? '';
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// WillPopScope is deprecated in newer Flutter versions but PopScope
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// has a different API; to avoid breaking changes we continue to use the
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// old widget and suppress the warning.
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// ignore: deprecated_member_use
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return WillPopScope(
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onWillPop: () async {
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// prevent the user from dismissing when download is in progress or
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// when the dialog is forcing an update
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return !widget.info.isForceUpdate && !_downloading;
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},
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child: AlertDialog(
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title: const Text('Update Available'),
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content: Column(
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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if (notes.isNotEmpty) ...[Text(notes), const SizedBox(height: 12)],
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if (_downloading)
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Column(
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children: [
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LinearProgressIndicator(value: _progress),
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const SizedBox(height: 8),
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Text('${(_progress * 100).toStringAsFixed(0)}%'),
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],
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),
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if (_failed)
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const Text(
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'An error occurred while downloading. Please try again.',
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style: TextStyle(color: Colors.red),
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),
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],
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),
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actions: _buildActions(),
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),
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);
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}
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List<Widget> _buildActions() {
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if (_downloading) {
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// don't show any actions while the apk is being fetched
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return <Widget>[];
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}
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if (widget.info.isForceUpdate) {
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return [
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FilledButton(
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onPressed: _startDownload,
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child: const Text('Update Now'),
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),
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];
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}
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return [
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TextButton(
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onPressed: () => Navigator.of(context).pop(),
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child: const Text('Later'),
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),
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FilledButton(onPressed: _startDownload, child: const Text('Update Now')),
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];
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}
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}
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