✨ Poll answer
This commit is contained in:
501
lib/widgets/poll/poll_submit.dart
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501
lib/widgets/poll/poll_submit.dart
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import 'package:flutter/material.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:island/models/poll.dart';
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import 'package:island/pods/network.dart';
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/// A poll answering widget that shows one question at a time and collects answers.
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///
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/// Usage:
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/// PollSubmit(
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/// poll: poll,
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/// onSubmit: (answers) {
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/// // answers is Map<String, dynamic>: questionId -> answer
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/// // answer types by question:
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/// // - singleChoice: String optionId
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/// // - multipleChoice: List<String> optionIds
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/// // - yesNo: bool
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/// // - rating: int (1..5)
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/// // - freeText: String
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/// },
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/// )
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class PollSubmit extends ConsumerStatefulWidget {
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const PollSubmit({
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super.key,
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required this.poll,
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required this.onSubmit,
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this.initialAnswers,
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this.onCancel,
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this.showProgress = true,
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});
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final SnPollWithStats poll;
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/// Callback when user submits all answers. Map questionId -> answer.
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final void Function(Map<String, dynamic> answers) onSubmit;
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/// Optional initial answers, keyed by questionId.
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final Map<String, dynamic>? initialAnswers;
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/// Optional cancel callback.
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final VoidCallback? onCancel;
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/// Whether to show a progress indicator (e.g., "2 / N").
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final bool showProgress;
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@override
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ConsumerState<PollSubmit> createState() => _PollSubmitState();
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}
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class _PollSubmitState extends ConsumerState<PollSubmit> {
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late final List<SnPollQuestion> _questions;
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int _index = 0;
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bool _submitting = false;
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/// Collected answers, keyed by questionId
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late Map<String, dynamic> _answers;
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/// Local controller for free text input
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final TextEditingController _textController = TextEditingController();
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/// Local state holders for inputs to avoid rebuilding whole list
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String? _singleChoiceSelected; // optionId
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final Set<String> _multiChoiceSelected = {};
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bool? _yesNoSelected;
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int? _ratingSelected; // 1..5
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@override
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void initState() {
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super.initState();
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// Ensure questions are ordered by `order`
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_questions = [...widget.poll.questions]
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..sort((a, b) => a.order.compareTo(b.order));
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_answers = Map<String, dynamic>.from(widget.initialAnswers ?? {});
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_loadCurrentIntoLocalState();
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}
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@override
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void didUpdateWidget(covariant PollSubmit oldWidget) {
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super.didUpdateWidget(oldWidget);
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if (oldWidget.poll.id != widget.poll.id) {
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_index = 0;
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_answers = Map<String, dynamic>.from(widget.initialAnswers ?? {});
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_questions
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..clear()
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..addAll(
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[...widget.poll.questions]
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..sort((a, b) => a.order.compareTo(b.order)),
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);
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_loadCurrentIntoLocalState();
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}
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}
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@override
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void dispose() {
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_textController.dispose();
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super.dispose();
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}
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SnPollQuestion get _current => _questions[_index];
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void _loadCurrentIntoLocalState() {
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final q = _current;
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final saved = _answers[q.id];
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_singleChoiceSelected = null;
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_multiChoiceSelected.clear();
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_yesNoSelected = null;
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_ratingSelected = null;
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_textController.text = '';
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switch (q.type) {
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case SnPollQuestionType.singleChoice:
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if (saved is String) _singleChoiceSelected = saved;
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break;
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case SnPollQuestionType.multipleChoice:
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if (saved is List) {
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_multiChoiceSelected.addAll(saved.whereType<String>());
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}
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break;
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case SnPollQuestionType.yesNo:
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if (saved is bool) _yesNoSelected = saved;
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break;
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case SnPollQuestionType.rating:
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if (saved is int) _ratingSelected = saved;
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break;
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case SnPollQuestionType.freeText:
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if (saved is String) _textController.text = saved;
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break;
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}
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}
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bool _isCurrentAnswered() {
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final q = _current;
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if (!q.isRequired) return true;
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switch (q.type) {
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case SnPollQuestionType.singleChoice:
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return _singleChoiceSelected != null;
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case SnPollQuestionType.multipleChoice:
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return _multiChoiceSelected.isNotEmpty;
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case SnPollQuestionType.yesNo:
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return _yesNoSelected != null;
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case SnPollQuestionType.rating:
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return (_ratingSelected ?? 0) > 0;
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case SnPollQuestionType.freeText:
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return _textController.text.trim().isNotEmpty;
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}
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}
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void _persistCurrentAnswer() {
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final q = _current;
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switch (q.type) {
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case SnPollQuestionType.singleChoice:
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if (_singleChoiceSelected == null) {
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_answers.remove(q.id);
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} else {
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_answers[q.id] = _singleChoiceSelected!;
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}
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break;
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case SnPollQuestionType.multipleChoice:
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if (_multiChoiceSelected.isEmpty) {
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_answers.remove(q.id);
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} else {
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_answers[q.id] = _multiChoiceSelected.toList(growable: false);
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}
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break;
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case SnPollQuestionType.yesNo:
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if (_yesNoSelected == null) {
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_answers.remove(q.id);
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} else {
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_answers[q.id] = _yesNoSelected!;
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}
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break;
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case SnPollQuestionType.rating:
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if (_ratingSelected == null) {
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_answers.remove(q.id);
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} else {
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_answers[q.id] = _ratingSelected!;
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}
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break;
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case SnPollQuestionType.freeText:
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final text = _textController.text.trim();
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if (text.isEmpty) {
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_answers.remove(q.id);
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} else {
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_answers[q.id] = text;
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}
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break;
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}
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}
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Future<void> _submitToServer() async {
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// Persist current question before final submit
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_persistCurrentAnswer();
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setState(() {
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_submitting = true;
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});
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try {
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final dio = ref.read(apiClientProvider);
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await dio.post(
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'/sphere/polls/${widget.poll.id}/answer',
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data: {'answer': _answers},
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);
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// Only call onSubmit after server accepts
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widget.onSubmit(Map<String, dynamic>.unmodifiable(_answers));
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} catch (e) {
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if (mounted) {
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ScaffoldMessenger.of(
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context,
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).showSnackBar(SnackBar(content: Text('Failed to submit poll: $e')));
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}
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} finally {
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if (mounted) {
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setState(() {
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_submitting = false;
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});
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}
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}
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}
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void _next() {
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if (_submitting) return;
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_persistCurrentAnswer();
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if (_index < _questions.length - 1) {
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setState(() {
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_index++;
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_loadCurrentIntoLocalState();
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});
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} else {
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// Final submit to API
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_submitToServer();
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}
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}
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void _back() {
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if (_submitting) return;
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_persistCurrentAnswer();
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if (_index > 0) {
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setState(() {
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_index--;
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_loadCurrentIntoLocalState();
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});
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} else {
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// at the first question; allow cancel if provided
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widget.onCancel?.call();
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}
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}
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Widget _buildHeader(BuildContext context) {
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final q = _current;
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return Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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if (widget.poll.title != null || widget.poll.description != null)
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Padding(
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padding: const EdgeInsets.only(bottom: 12),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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if (widget.poll.title != null)
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Text(
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widget.poll.title!,
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style: Theme.of(context).textTheme.titleLarge,
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),
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if (widget.poll.description != null)
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Padding(
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padding: const EdgeInsets.only(top: 4),
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child: Text(
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widget.poll.description!,
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style: Theme.of(context).textTheme.bodyMedium?.copyWith(
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color: Theme.of(
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context,
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).textTheme.bodyMedium?.color?.withOpacity(0.7),
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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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if (widget.showProgress)
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Text(
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'${_index + 1} / ${_questions.length}',
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style: Theme.of(context).textTheme.labelMedium,
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),
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Row(
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children: [
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Expanded(
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child: Text(
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q.title,
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style: Theme.of(context).textTheme.titleMedium,
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),
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),
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if (q.isRequired)
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Padding(
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padding: const EdgeInsets.only(left: 8),
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child: Text(
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'*',
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style: Theme.of(context).textTheme.titleMedium?.copyWith(
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color: Theme.of(context).colorScheme.error,
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),
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),
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),
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],
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),
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if (q.description != null)
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Padding(
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padding: const EdgeInsets.only(top: 4),
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child: Text(
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q.description!,
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style: Theme.of(context).textTheme.bodySmall?.copyWith(
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color: Theme.of(
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context,
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).textTheme.bodySmall?.color?.withOpacity(0.7),
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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 _buildBody(BuildContext context) {
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final q = _current;
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switch (q.type) {
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case SnPollQuestionType.singleChoice:
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return _buildSingleChoice(context, q);
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case SnPollQuestionType.multipleChoice:
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return _buildMultipleChoice(context, q);
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case SnPollQuestionType.yesNo:
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return _buildYesNo(context, q);
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case SnPollQuestionType.rating:
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return _buildRating(context, q);
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case SnPollQuestionType.freeText:
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return _buildFreeText(context, q);
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}
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}
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Widget _buildSingleChoice(BuildContext context, SnPollQuestion q) {
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final options = [...?q.options]..sort((a, b) => a.order.compareTo(b.order));
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return Column(
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children: [
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for (final opt in options)
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RadioListTile<String>(
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value: opt.id,
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groupValue: _singleChoiceSelected,
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onChanged: (val) => setState(() => _singleChoiceSelected = val),
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title: Text(opt.label),
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subtitle: opt.description != null ? Text(opt.description!) : null,
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),
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],
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);
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}
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Widget _buildMultipleChoice(BuildContext context, SnPollQuestion q) {
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final options = [...?q.options]..sort((a, b) => a.order.compareTo(b.order));
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return Column(
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children: [
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for (final opt in options)
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CheckboxListTile(
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value: _multiChoiceSelected.contains(opt.id),
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onChanged: (val) {
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setState(() {
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if (val == true) {
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_multiChoiceSelected.add(opt.id);
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} else {
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_multiChoiceSelected.remove(opt.id);
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}
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});
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},
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title: Text(opt.label),
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subtitle: opt.description != null ? Text(opt.description!) : null,
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),
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],
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);
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}
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Widget _buildYesNo(BuildContext context, SnPollQuestion q) {
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return Row(
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children: [
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Expanded(
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child: SegmentedButton<bool>(
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segments: const [
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ButtonSegment(value: true, label: Text('Yes')),
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ButtonSegment(value: false, label: Text('No')),
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],
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selected: _yesNoSelected == null ? {} : {_yesNoSelected!},
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onSelectionChanged: (sel) {
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setState(() {
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_yesNoSelected = sel.isEmpty ? null : sel.first;
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});
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},
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multiSelectionEnabled: false,
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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 _buildRating(BuildContext context, SnPollQuestion q) {
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const max = 5;
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return Row(
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mainAxisAlignment: MainAxisAlignment.center,
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children: List.generate(max, (i) {
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final value = i + 1;
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final selected = (_ratingSelected ?? 0) >= value;
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return IconButton(
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icon: Icon(
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selected ? Icons.star : Icons.star_border,
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color: selected ? Colors.amber : null,
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),
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onPressed: () {
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setState(() {
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_ratingSelected = value;
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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 _buildFreeText(BuildContext context, SnPollQuestion q) {
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return TextField(
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controller: _textController,
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maxLines: 6,
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decoration: const InputDecoration(border: OutlineInputBorder()),
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);
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}
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Widget _buildNavBar(BuildContext context) {
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final isLast = _index == _questions.length - 1;
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final canProceed = _isCurrentAnswered() && !_submitting;
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return Row(
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children: [
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OutlinedButton.icon(
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icon: const Icon(Icons.arrow_back),
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label: Text(_index == 0 ? 'Cancel' : 'Back'),
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onPressed: _submitting ? null : _back,
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),
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const Spacer(),
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FilledButton.icon(
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icon:
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_submitting
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? const SizedBox(
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width: 16,
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height: 16,
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child: CircularProgressIndicator(strokeWidth: 2),
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)
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: Icon(isLast ? Icons.check : Icons.arrow_forward),
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label: Text(isLast ? 'Submit' : 'Next'),
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onPressed: canProceed ? _next : null,
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),
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],
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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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if (_questions.isEmpty) {
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return const SizedBox.shrink();
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}
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return Column(
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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_buildHeader(context),
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const SizedBox(height: 12),
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_AnimatedStep(key: ValueKey(_current.id), child: _buildBody(context)),
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const SizedBox(height: 16),
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_buildNavBar(context),
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],
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);
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}
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}
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/// Simple fade/slide transition between questions.
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class _AnimatedStep extends StatelessWidget {
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const _AnimatedStep({super.key, required this.child});
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final Widget child;
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@override
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Widget build(BuildContext context) {
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return AnimatedSwitcher(
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duration: const Duration(milliseconds: 250),
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transitionBuilder: (child, anim) {
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final offset = Tween<Offset>(
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begin: const Offset(0.1, 0),
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end: Offset.zero,
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).animate(anim);
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final fade = CurvedAnimation(parent: anim, curve: Curves.easeInOut);
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return FadeTransition(
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opacity: fade,
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child: SlideTransition(position: offset, child: child),
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);
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},
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child: child,
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);
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}
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}
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Reference in New Issue
Block a user