528 lines
22 KiB
Dart
528 lines
22 KiB
Dart
import 'package:file_picker/file_picker.dart';
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import 'package:flutter/material.dart';
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import '../../app/app_theme.dart';
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import '../../services/diagnostic_log.dart';
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import '../../services/school_page_diagnostic.dart';
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import 'feedback_submission.dart';
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typedef FeedbackAttachmentPicker = Future<FeedbackAttachment?> Function();
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class FeedbackPage extends StatefulWidget {
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const FeedbackPage({
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super.key,
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this.sender = const UnconfiguredFeedbackSender(),
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this.pickAttachment,
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this.limits = FeedbackLimits.defaults,
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});
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final FeedbackSender sender;
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final FeedbackAttachmentPicker? pickAttachment;
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final FeedbackLimits limits;
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@override
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State<FeedbackPage> createState() => _FeedbackPageState();
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}
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class _FeedbackPageState extends State<FeedbackPage> {
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final _form = GlobalKey<FormState>();
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final _message = TextEditingController();
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final _contact = TextEditingController();
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final _school = TextEditingController();
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final _attachments = <FeedbackAttachment>[];
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var _kind = FeedbackKind.problem;
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var _submitting = false;
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var _picking = false;
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var _success = false;
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var _uncertain = false;
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var _includeLogs = false;
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var _includeHtml = false;
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String? _error;
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FeedbackSubmission? _pendingSubmission;
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@override
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void dispose() {
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_message.dispose();
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_contact.dispose();
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_school.dispose();
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super.dispose();
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}
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void _changed([String? value]) {
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setState(() {
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_pendingSubmission = null;
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_error = null;
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});
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}
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Future<void> _addAttachment() async {
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if (_picking || _submitting) return;
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if (_attachments.length >= widget.limits.maxAttachments) {
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setState(() => _error = '最多添加 ${widget.limits.maxAttachments} 个附件');
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return;
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}
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setState(() => _picking = true);
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try {
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FeedbackAttachment? attachment;
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if (widget.pickAttachment != null) {
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attachment = await widget.pickAttachment!();
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} else {
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final file = await FilePicker.pickFile(
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type: FileType.custom,
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allowedExtensions: FeedbackAttachment.supportedTypes.keys.toList(),
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);
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if (file != null) {
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final knownSize = file.lengthSync();
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if (knownSize != null && knownSize > widget.limits.maxFileBytes) {
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throw FeedbackException(
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'单个附件不能超过 ${_mb(widget.limits.maxFileBytes)} MB',
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);
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}
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attachment = await FeedbackAttachment.read(
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name: file.name,
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stream: file.readAsByteStream(),
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maxBytes: widget.limits.maxFileBytes,
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);
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}
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}
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if (!mounted || attachment == null) return;
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FeedbackSubmission.validateAttachments([
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..._attachments,
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attachment,
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], widget.limits);
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setState(() {
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_attachments.add(attachment!);
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_pendingSubmission = null;
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_error = null;
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});
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} on FeedbackException catch (error) {
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if (mounted) setState(() => _error = error.message);
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} catch (_) {
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if (mounted) setState(() => _error = '无法读取附件，请重新选择');
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} finally {
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if (mounted) setState(() => _picking = false);
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}
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}
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Future<void> _submit() async {
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if (_submitting || _picking) return;
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if (!_uncertain && !(_form.currentState?.validate() ?? false)) return;
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FocusScope.of(context).unfocus();
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setState(() => _submitting = true);
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try {
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final html =
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_pendingSubmission == null &&
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_kind == FeedbackKind.problem &&
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_includeHtml
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? SchoolPageDiagnostic.instance.export()
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: null;
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if (_pendingSubmission == null &&
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_kind == FeedbackKind.problem &&
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_includeHtml &&
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html == null) {
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throw const FeedbackException(
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'最近10分钟没有可用的本科导入页面。请返回学校页面再尝试导入，然后提交反馈；也可以取消附带HTML。',
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);
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}
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_pendingSubmission ??= _kind == FeedbackKind.problem
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? FeedbackSubmission.problem(
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id: FeedbackSubmission.newId(),
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message: _message.text,
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contact: _contact.text,
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attachments: _attachments,
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limits: widget.limits,
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diagnosticLog: _includeLogs
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? await DiagnosticLog.instance.export()
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: null,
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diagnosticHtml: html,
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)
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: FeedbackSubmission.development(
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id: FeedbackSubmission.newId(),
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school: _school.text,
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contact: _contact.text,
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);
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setState(() {
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_submitting = true;
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_error = null;
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});
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await widget.sender.send(_pendingSubmission!);
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if (_pendingSubmission?.diagnosticHtml != null) {
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SchoolPageDiagnostic.instance.clear();
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}
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if (mounted) setState(() => _success = true);
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} on FeedbackDeliveryUncertain catch (error) {
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if (mounted) {
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setState(() {
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_uncertain = true;
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_error = error.message;
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});
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}
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} on FeedbackException catch (error) {
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if (mounted) setState(() => _error = error.message);
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} catch (_) {
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if (mounted) setState(() => _error = '提交未完成，请检查网络后重试。填写内容和附件已保留。');
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} finally {
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if (mounted) setState(() => _submitting = false);
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}
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}
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@override
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Widget build(BuildContext context) => PopScope(
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canPop: !_submitting,
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child: Scaffold(
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appBar: AppBar(title: const Text('反馈与共建')),
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body: _success
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? _successView(context)
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: _uncertain
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? _uncertainView()
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: Form(
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key: _form,
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child: ListView(
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padding: const EdgeInsets.all(22),
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children: [
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SegmentedButton<FeedbackKind>(
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segments: const [
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ButtonSegment(
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value: FeedbackKind.problem,
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label: Text('反馈问题和建议'),
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),
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ButtonSegment(
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value: FeedbackKind.development,
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label: Text('我要参与开发'),
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),
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],
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selected: {_kind},
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showSelectedIcon: false,
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onSelectionChanged: _submitting
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? null
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: (value) {
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setState(() {
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_kind = value.single;
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_pendingSubmission = null;
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_error = null;
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});
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_form.currentState?.reset();
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},
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),
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const SizedBox(height: 18),
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SurfaceCard(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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_kind == FeedbackKind.problem
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? '告诉我们哪里需要改进'
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: '一起让课表变得更好',
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style: const TextStyle(
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fontSize: 18,
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fontWeight: FontWeight.w700,
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),
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),
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const SizedBox(height: 8),
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Text(
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_kind == FeedbackKind.problem
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? '请描述遇到的问题或你的建议。联系方式和图片、视频都可以选填。'
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: '请留下你的学校和联系方式，方便开发者与你联系。',
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style: TextStyle(
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fontSize: 12,
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height: 1.7,
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color: ink.withValues(alpha: 0.6),
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),
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),
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const SizedBox(height: 20),
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if (_kind == FeedbackKind.problem)
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TextFormField(
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key: const Key('feedback-message'),
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controller: _message,
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enabled: !_submitting,
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minLines: 4,
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maxLines: 8,
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maxLength: 5000,
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decoration: const InputDecoration(
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labelText: '问题或建议（必填）',
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alignLabelWithHint: true,
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),
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onChanged: _changed,
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validator: (value) =>
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(value?.trim().isEmpty ?? true)
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? '请填写问题或建议'
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: null,
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)
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else
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TextFormField(
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key: const Key('feedback-school'),
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controller: _school,
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enabled: !_submitting,
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maxLength: 200,
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decoration: const InputDecoration(
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labelText: '学校（必填）',
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),
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onChanged: _changed,
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validator: (value) =>
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(value?.trim().isEmpty ?? true)
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? '请填写学校'
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: null,
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),
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const SizedBox(height: 14),
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TextFormField(
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key: const Key('feedback-contact'),
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controller: _contact,
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enabled: !_submitting,
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maxLength: 200,
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decoration: InputDecoration(
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labelText: _kind == FeedbackKind.problem
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? '联系方式（选填）'
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: '联系方式（必填）',
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hintText: '微信、QQ、邮箱等',
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),
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onChanged: _changed,
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validator: (value) =>
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_kind == FeedbackKind.development &&
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(value?.trim().isEmpty ?? true)
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? '请填写联系方式'
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: null,
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),
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if (_kind == FeedbackKind.problem) ...[
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CheckboxListTile(
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key: const Key('feedback-logs'),
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contentPadding: EdgeInsets.zero,
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title: const Text('附带近10分钟诊断日志'),
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subtitle: const Text(
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'包含登录跳转、课表读取及错误状态，帮助排查问题；不包含密码、验证码或课表内容。',
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),
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value: _includeLogs,
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onChanged: _submitting
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? null
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: (value) {
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setState(() {
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_includeLogs = value ?? false;
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if (!_includeLogs) _includeHtml = false;
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_pendingSubmission = null;
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_error = null;
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});
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},
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),
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CheckboxListTile(
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key: const Key('feedback-html'),
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contentPadding: EdgeInsets.zero,
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title: const Text('附带最近一次本科导入页面HTML'),
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subtitle: const Text(
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'需先勾选日志。网页可能含姓名、学号、课程、教师和考场信息，仅保留最近10分钟，单独作为邮件附件发送。',
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),
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value: _includeHtml,
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onChanged: _submitting || !_includeLogs
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? null
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: (value) async {
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var accepted = value ?? false;
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if (accepted) {
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accepted =
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await showDialog<bool>(
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context: context,
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builder: (context) => AlertDialog(
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title: const Text('附带网页排查资料？'),
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content: const Text(
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'附件可能包含你的姓名、学号、课程及考试信息，将发送给开发者用于排查导入问题。密码、验证码、Cookie和认证参数不会包含在附件中。',
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),
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actions: [
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TextButton(
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onPressed: () =>
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Navigator.pop(
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context,
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false,
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),
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child: const Text('取消'),
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),
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FilledButton(
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onPressed: () =>
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Navigator.pop(
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context,
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true,
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),
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child: const Text('同意附带'),
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),
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],
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),
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) ??
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false;
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}
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if (!mounted) return;
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setState(() {
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_includeHtml = accepted;
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_pendingSubmission = null;
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_error = null;
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});
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},
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),
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const SizedBox(height: 10),
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const Text(
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'图片或视频（选填）',
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style: TextStyle(fontWeight: FontWeight.w600),
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),
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const SizedBox(height: 6),
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Text(
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'最多 ${widget.limits.maxAttachments} 个，每个 ${_mb(widget.limits.maxFileBytes)} MB，合计 ${_mb(widget.limits.maxTotalBytes)} MB',
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style: TextStyle(
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fontSize: 11,
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color: ink.withValues(alpha: 0.55),
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),
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),
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for (var i = 0; i < _attachments.length; i++)
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ListTile(
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contentPadding: EdgeInsets.zero,
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leading: Icon(
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_attachments[i].contentType.startsWith('image/')
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? Icons.image_outlined
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: Icons.videocam_outlined,
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),
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title: Text(
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_attachments[i].filename,
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maxLines: 2,
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overflow: TextOverflow.ellipsis,
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),
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subtitle: Text(
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'${(_attachments[i].size / 1024).toStringAsFixed(1)} KB',
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),
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trailing: IconButton(
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tooltip: '移除 ${_attachments[i].filename}',
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onPressed: _submitting
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? null
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: () => setState(() {
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_attachments.removeAt(i);
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_pendingSubmission = null;
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_error = null;
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}),
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icon: const Icon(Icons.close_rounded),
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),
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),
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const SizedBox(height: 8),
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OutlinedButton.icon(
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key: const Key('feedback-add-media'),
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onPressed: _submitting || _picking
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? null
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: _addAttachment,
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icon: const Icon(Icons.attach_file_rounded),
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label: Text(_picking ? '正在读取附件…' : '添加图片或视频'),
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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(height: 16),
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if (_error != null) ...[
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Text(
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_error!,
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style: TextStyle(
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color: Theme.of(context).colorScheme.error,
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),
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semanticsLabel: _error,
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),
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const SizedBox(height: 14),
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],
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FilledButton(
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key: const Key('feedback-submit'),
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onPressed: _submitting || _picking ? null : _submit,
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child: _submitting
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? const Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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SizedBox(
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width: 16,
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height: 16,
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child: CircularProgressIndicator(
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strokeWidth: 2,
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color: Colors.white,
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),
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),
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SizedBox(width: 10),
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Text('正在提交…'),
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],
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)
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: const Text('提交'),
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),
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const SizedBox(height: 12),
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Text(
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'点击提交后，仅发送你在当前类型填写的内容和选择的附件。',
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textAlign: TextAlign.center,
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style: TextStyle(
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fontSize: 11,
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height: 1.6,
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color: ink.withValues(alpha: 0.5),
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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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Widget _uncertainView() => ListView(
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padding: const EdgeInsets.all(28),
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children: [
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const Icon(Icons.mail_outline_rounded, color: river, size: 54),
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const SizedBox(height: 18),
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const Text(
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'提交状态待确认',
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textAlign: TextAlign.center,
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style: TextStyle(fontSize: 22, fontWeight: FontWeight.w700),
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),
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const SizedBox(height: 14),
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Text(
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_error ?? FeedbackDeliveryUncertain.instructions,
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style: const TextStyle(height: 1.7),
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),
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const SizedBox(height: 20),
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const Text('提交编号（可长按复制）'),
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const SizedBox(height: 8),
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SelectableText(
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_pendingSubmission!.id,
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key: const Key('feedback-uncertain-id'),
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),
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const SizedBox(height: 20),
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FilledButton(
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key: const Key('feedback-check-original'),
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onPressed: _submitting ? null : _submit,
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child: Text(_submitting ? '正在检查…' : '检查原提交状态'),
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),
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const SizedBox(height: 10),
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const Text(
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'检查会使用原提交编号和原内容。核对完成前，退出后也请勿创建相同内容的新反馈。',
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style: TextStyle(fontSize: 12, height: 1.6),
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),
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],
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);
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Widget _successView(BuildContext context) => Center(
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child: Padding(
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padding: const EdgeInsets.all(28),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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const Icon(
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Icons.check_circle_outline_rounded,
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color: river,
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size: 54,
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),
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const SizedBox(height: 18),
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const Text(
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'提交成功',
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style: TextStyle(fontSize: 22, fontWeight: FontWeight.w700),
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),
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const SizedBox(height: 10),
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Text(
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_kind == FeedbackKind.problem
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? '感谢你的反馈，我们已收到。'
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: '感谢你愿意参与，我们已收到你的信息。',
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textAlign: TextAlign.center,
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),
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const SizedBox(height: 22),
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FilledButton(
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onPressed: () => Navigator.of(context).maybePop(),
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child: const Text('完成'),
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),
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],
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),
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),
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);
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String _mb(int bytes) => (bytes / (1024 * 1024)).toStringAsFixed(0);
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}
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