405 lines
12 KiB
Dart
405 lines
12 KiB
Dart
import 'dart:async';
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import 'package:flutter/material.dart';
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import 'package:qhd_prevention/customWidget/custom_alert_dialog.dart';
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import 'package:qhd_prevention/customWidget/custom_button.dart';
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import 'package:qhd_prevention/customWidget/toast_util.dart';
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import 'package:qhd_prevention/pages/home/study/study_detail_page.dart';
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import 'package:qhd_prevention/pages/my_appbar.dart';
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import 'package:qhd_prevention/http/ApiService.dart';
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import 'dart:convert';
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class Question {
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final Map<String, dynamic> rawData;
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final String questionDry;
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final String questionType;
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final Map<String, String> options;
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String checked;
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Question({
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required this.rawData,
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required this.questionDry,
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required this.questionType,
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required this.options,
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this.checked = '',
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});
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factory Question.fromJson(Map<String, dynamic> json) {
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final type = json['QUESTIONTYPE'] as String? ?? '1';
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final opts = <String, String>{};
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if (type == '1' || type == '2' || type == '3') {
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opts['A'] = json['OPTIONA'] as String? ?? '';
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opts['B'] = json['OPTIONB'] as String? ?? '';
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if (type != '3') {
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opts['C'] = json['OPTIONC'] as String? ?? '';
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opts['D'] = json['OPTIOND'] as String? ?? '';
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}
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}
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final raw = Map<String, dynamic>.from(json);
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return Question(
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rawData: raw,
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questionDry: json['QUESTIONDRY'] as String? ?? '',
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questionType: type,
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options: opts,
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);
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}
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}
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class TakeExamPage extends StatefulWidget {
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const TakeExamPage({
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required this.examInfo,
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required this.examType,
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super.key,
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});
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final Map<String, dynamic> examInfo;
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final TakeExamType examType;
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@override
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State<TakeExamPage> createState() => _TakeExamPageState();
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}
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class _TakeExamPageState extends State<TakeExamPage> {
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late final List<Question> questions;
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late final Map<String, dynamic> info;
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int current = 0;
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late int remainingSeconds;
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Timer? _timer;
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final questionTypeMap = <String, String>{
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'1': '单选题',
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'2': '多选题',
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'3': '判断题',
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'4': '填空题',
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};
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@override
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void initState() {
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super.initState();
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info = widget.examInfo['pd'] as Map<String, dynamic>? ?? {};
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final rawList = widget.examInfo['inputQue'] as List<dynamic>? ?? [];
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questions =
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rawList
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.map((e) => Question.fromJson(e as Map<String, dynamic>))
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.toList();
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final numberOfExams = widget.examInfo['NUMBEROFEXAMS'] as String? ?? '0';
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WidgetsBinding.instance.addPostFrameCallback((_) {
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if (numberOfExams == '-9999') {
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_showTip('强化学习考试开始，限时${info['ANSWERSHEETTIME']}分钟，请注意答题时间！');
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} else {
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_showTip('您无考试次数！');
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}
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});
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final minutes = info['ANSWERSHEETTIME'] as int? ?? 0;
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remainingSeconds = minutes * 60;
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_startTimer();
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}
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@override
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void dispose() {
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_timer?.cancel();
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super.dispose();
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}
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Future<void> _showTip(String content) {
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return showDialog<void>(
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context: context,
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builder:
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(_) => CustomAlertDialog(
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title: '温馨提示',
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content: content,
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cancelText: '',
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confirmText: '确定',
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onConfirm: () {},
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),
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);
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}
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bool _validateCurrentAnswer() {
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final q = questions[current];
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if (q.checked.isEmpty) {
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_showTip('请对本题进行作答。');
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return false;
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}
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if (q.questionType == '2' && q.checked.split(',').length < 2) {
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_showTip('多选题最少需要选择两个答案。');
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return false;
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}
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return true;
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}
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void _startTimer() {
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_timer = Timer.periodic(const Duration(seconds: 1), (timer) {
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if (remainingSeconds <= 0) {
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timer.cancel();
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_onTimeUp();
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} else {
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setState(() => remainingSeconds--);
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}
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});
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}
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void _chooseTopic(String type, String key) {
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final q = questions[current];
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if (type == 'radio' || type == 'judge') {
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q.checked = (q.checked == key) ? '' : key;
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} else {
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final arr = q.checked.isNotEmpty ? q.checked.split(',') : <String>[];
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if (arr.contains(key))
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arr.remove(key);
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else
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arr.add(key);
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arr.sort();
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q.checked = arr.join(',');
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}
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setState(() {});
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}
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void _nextQuestion() {
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if (!_validateCurrentAnswer()) return;
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if (current < questions.length - 1) setState(() => current++);
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}
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void _previousQuestion() {
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if (current > 0) setState(() => current--);
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}
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void _confirmSubmit() {
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if (!_validateCurrentAnswer()) return;
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showDialog<void>(
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context: context,
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builder:
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(_) => CustomAlertDialog(
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title: '温馨提示',
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content: '请确认是否交卷！',
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cancelText: '取消',
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onCancel: () {},
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onConfirm: _submit,
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),
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);
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}
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Future<void> _submit() async {
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for (var q in questions) {
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if (q.questionType == '2') q.checked = q.checked.replaceAll(',', '');
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q.rawData['checked'] = q.checked;
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}
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final data = {
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'STAGEEXAMPAPERINPUT_ID':
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widget.examInfo['STRENGTHEN_PAPER_QUESTION_ID'],
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'STUDENT_ID': widget.examInfo['STUDENT_ID'],
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'CLASS_ID': widget.examInfo['CLASS_ID'],
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'NUMBEROFEXAMS': widget.examInfo['NUMBEROFEXAMS'],
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'entrySite': widget.examType.name,
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'PASSSCORE': info['PASSSCORE'],
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'EXAMSCORE': info['EXAMSCORE'],
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'EXAMTIMEBEGIN': info['EXAMTIMEBEGIN'],
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'options': jsonEncode(questions.map((q) => q.rawData).toList()),
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};
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final res = await ApiService.submitExam(data);
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if (res['result'] == 'success') {
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final score = res['examScore'] ?? '0';
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final passed = res['examResult'] != '0';
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showDialog<void>(
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context: context,
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builder:
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(_) => CustomAlertDialog(
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title: '温馨提示',
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content:
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passed
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? '您的成绩为 $score 分，恭喜您通过本次考试，请继续保持！'
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: '您的成绩为 $score 分，很遗憾您没有通过本次考试，请再接再厉！',
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cancelText: '',
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confirmText: '确定',
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onConfirm: () {
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Navigator.pop(context);
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},
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),
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);
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}
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}
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void _onTimeUp() {
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ToastUtil.showError(context, '考试时间已结束');
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_submit();
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}
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Widget _buildOptions(Question q) {
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if (q.questionType == '4') {
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return TextField(
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controller: TextEditingController(text: q.checked),
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onChanged: (val) => q.checked = val,
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maxLength: 255,
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decoration: const InputDecoration(
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hintText: '请输入内容',
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border: OutlineInputBorder(),
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),
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);
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}
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final keys = q.questionType == '3' ? ['A', 'B'] : ['A', 'B', 'C', 'D'];
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return Column(
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children:
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keys.map((key) {
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final active = q.checked.split(',').contains(key);
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return GestureDetector(
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onTap:
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() => _chooseTopic(
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q.questionType == '3'
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? 'judge'
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: (q.questionType == '2' ? 'multiple' : 'radio'),
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key,
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),
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child: Container(
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margin: const EdgeInsets.symmetric(vertical: 8),
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child: Row(
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children: [
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Container(
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width: 40,
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height: 40,
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alignment: Alignment.center,
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decoration: BoxDecoration(
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color: active ? Colors.blue : Colors.grey.shade200,
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shape: BoxShape.circle,
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),
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child: Text(
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key,
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style: TextStyle(
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color: active ? Colors.white : Colors.black87,
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),
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),
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),
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const SizedBox(width: 16),
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Expanded(
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child: Text(
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q.options[key] ?? '',
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style: const TextStyle(fontSize: 16),
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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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}).toList(),
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);
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}
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String get _formattedTime {
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final m = remainingSeconds ~/ 60;
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final s = remainingSeconds % 60;
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return '${m.toString().padLeft(2, '0')}:${s.toString().padLeft(2, '0')}';
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}
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@override
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Widget build(BuildContext context) {
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final q = questions.isNotEmpty ? questions[current] : null;
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return PopScope(
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canPop: false, // 禁用返回
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child: Scaffold(
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appBar: const MyAppbar(title: '课程考试', isBack: false,),
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body: Padding(
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padding: const EdgeInsets.all(16),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Stack(
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children: [
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Container(
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width: double.infinity,
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height: 120,
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decoration: BoxDecoration(
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image: const DecorationImage(
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image: AssetImage('assets/study/bgimg1.png'),
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fit: BoxFit.cover,
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),
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borderRadius: BorderRadius.circular(8),
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),
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),
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Positioned.fill(
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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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Text(
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'考试科目：${info['EXAMNAME'] ?? ''}',
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style: const TextStyle(
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color: Colors.white,
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fontSize: 18,
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fontWeight: FontWeight.bold,
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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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'当前试题 ${current + 1}/${questions.length}',
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style: const TextStyle(
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color: Colors.white,
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fontSize: 16,
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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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'考试剩余时间：$_formattedTime',
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style: const TextStyle(
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color: Colors.white,
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fontSize: 16,
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),
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),
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],
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),
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),
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),
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],
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),
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const SizedBox(height: 16),
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if (q != null) ...[
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Text(
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'${current + 1}. ${q.questionDry} （${questionTypeMap[q.questionType] ?? ''}）',
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style: const TextStyle(
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fontWeight: FontWeight.bold,
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fontSize: 18,
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),
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),
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const SizedBox(height: 16),
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_buildOptions(q),
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],
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const Spacer(),
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Row(
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children: [
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if (current > 0)
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Expanded(
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child: CustomButton(
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text: '上一题',
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backgroundColor: Colors.grey.shade200,
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textStyle: const TextStyle(color: Colors.black54),
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onPressed: _previousQuestion,
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),
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),
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if (current > 0 && current < questions.length - 1)
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const SizedBox(width: 16),
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if (current < questions.length - 1)
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Expanded(
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child: CustomButton(
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text: '下一题',
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backgroundColor: Colors.blue,
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onPressed: _nextQuestion,
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),
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),
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if (current == questions.length - 1)
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Expanded(
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child: CustomButton(
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text: '交卷',
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backgroundColor: Colors.blue,
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onPressed: _confirmSubmit,
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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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