58 lines
1.9 KiB
Dart
58 lines
1.9 KiB
Dart
import 'courses/courses.dart';
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import 'models.dart';
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import 'speech_compare.dart';
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class ReviewCheckResult {
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const ReviewCheckResult({
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required this.complete,
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required this.message,
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this.dictation,
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});
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final bool complete;
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final String message;
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/// Word-by-word comparison with the dictated sentence; null otherwise.
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final SpokenComparison? dictation;
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}
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/// Checks only the minimum information a learner needs to produce in a
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/// review. The rule and the hint come from the core item's course JSON, which
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/// accepts contractions and variable slot values instead of one fixed
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/// sentence.
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class ReviewFeedback {
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const ReviewFeedback._();
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static ReviewCheckResult check(ReviewItem item, String input) {
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final dictation = item.skill == dictationSkill
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? coreDictationSentences[item.id]
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: null;
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if (dictation != null) {
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final comparison = compareSpoken(dictation.sentence, input);
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final missing = comparison.total - comparison.heardCount;
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final wrong = missing + comparison.extraWords.length;
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return ReviewCheckResult(
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complete: comparison.matches,
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message: comparison.matches
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? '听写正确。'
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: '有 $wrong 处和听到的句子不一致。再听一次，检查拼写和漏掉的词。',
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dictation: comparison,
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);
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}
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final complete = isCoreItem(item.id)
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? coreItemUsedIn(item.id, input)
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: RegExp(r"[a-z]+(?:'[a-z]+)?")
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.allMatches(normalizeAnswer(input))
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.map((match) => match.group(0))
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.toSet()
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.length >=
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2;
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return ReviewCheckResult(
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complete: complete,
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message: complete
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? '表达已完成，可以进入下一次复习安排。'
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: coreReviewHints[item.id] ?? '再补充本次目标中的关键英文词或句型。',
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);
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}
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}
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