153 lines
4.5 KiB
Dart
153 lines
4.5 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:webview_flutter/webview_flutter.dart';
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import '../../app/app_controller.dart';
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import 'school_session.dart';
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class SchoolAuthPage extends StatefulWidget {
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const SchoolAuthPage({
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super.key,
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required this.session,
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required this.controller,
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});
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final SchoolSession session;
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final AppController controller;
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@override
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State<SchoolAuthPage> createState() => _SchoolAuthPageState();
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}
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class _SchoolAuthPageState extends State<SchoolAuthPage> {
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bool _saving = false;
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@override
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void initState() {
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super.initState();
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widget.session.addListener(_changed);
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WidgetsBinding.instance.addPostFrameCallback((_) => _changed());
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}
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void _changed() {
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if (!mounted) return;
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setState(() {});
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final s = widget.session;
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final courses = s.pendingDraft, exams = s.pendingExams;
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final generation = s.pageGeneration;
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final route = ModalRoute.of(context);
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if (_saving || (courses == null && exams == null)) return;
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_saving = true;
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WidgetsBinding.instance.addPostFrameCallback((_) async {
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if (!mounted) {
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_saving = false;
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return;
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}
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// The session draft must still belong to the same page after navigation.
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if (generation != s.pageGeneration ||
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courses != s.pendingDraft ||
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exams != s.pendingExams) {
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_saving = false;
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_changed();
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return;
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}
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if (courses != null) {
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await widget.controller.applyImport(courses, confirmedEmpty: false);
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}
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if (exams != null) await widget.controller.applyExams(exams);
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final success = widget.controller.lastError == null;
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final acknowledged = s.saved(
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success: success,
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generation: generation,
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draft: courses,
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exams: exams,
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);
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_saving = false;
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if (!mounted) return;
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if (!acknowledged) {
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_changed();
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return;
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}
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if (success && route?.isCurrent == true) {
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Navigator.of(context).pop();
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text(exams == null ? '课表已导入；请核对学期开始日。' : '考试信息已更新'),
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),
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);
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} else {
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setState(() {});
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}
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});
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}
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@override
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void dispose() {
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widget.session.removeListener(_changed);
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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final s = widget.session;
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return Scaffold(
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appBar: AppBar(
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title: const Text('学校认证'),
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actions: [
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IconButton(
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tooltip: '重新认证',
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onPressed: _saving ? null : s.openAuthentication,
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icon: const Icon(Icons.refresh_rounded),
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),
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IconButton(
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tooltip: '重试读取',
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onPressed: _saving
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? null
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: (s.requestingExams ? s.openExams : s.openTimetable),
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icon: const Icon(Icons.sync_rounded),
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),
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],
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),
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body: Column(
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children: [
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if (s.busy || _saving) const LinearProgressIndicator(minHeight: 2),
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Container(
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width: double.infinity,
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padding: const EdgeInsets.all(12),
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color: const Color(0xFFEFF6FF),
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child: Text(
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s.message,
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style: const TextStyle(fontSize: 12, height: 1.5),
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),
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),
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Expanded(
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child: Stack(
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children: [
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WebViewWidget(controller: s.web),
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if (s.finding || _saving)
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Positioned.fill(
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child: ColoredBox(
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color: const Color(0xFFF5F9FE),
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child: Center(
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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const CircularProgressIndicator(),
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const SizedBox(height: 20),
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Text(
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_saving
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? '正在保存，请稍候'
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: (s.requestingExams
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? '正在查找考试安排，请稍候'
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: '正在查找课表，请稍候'),
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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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),
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],
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),
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);
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}
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}
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