113 lines
3.8 KiB
Dart
113 lines
3.8 KiB
Dart
import 'models.dart';
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/// Combines strict local matching with an advisory semantic AI result.
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///
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/// Progress is deliberately permissive: a strict local match can continue if
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/// AI is unavailable or disagrees. Mastery evidence is conservative: a free
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/// scene produces independent evidence only when local and AI agree and the
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/// learner received no answer-level help.
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DialogueTurnDecision resolveDialogueTurnDecision({
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required LocalDialogueVerdict local,
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required DialogueAiIntervention? ai,
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required bool aiWasAttempted,
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required bool isFreeScene,
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required DialogueSupportLevel supportLevel,
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}) {
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if (local == LocalDialogueVerdict.rejected) {
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return const DialogueTurnDecision(
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canAdvance: false,
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evidenceOutcome: EvidenceKind.languageError,
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validationSource: DialogueValidationSource.local,
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supportLevel: DialogueSupportLevel.none,
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feedback: '请输入一个有效的英文回答。',
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);
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}
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final aiAccepted =
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ai?.accepted == true &&
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ai?.goalSatisfied == true &&
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ai?.verdict == DialogueAiVerdict.accepted;
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final assisted = switch (supportLevel) {
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DialogueSupportLevel.hint ||
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DialogueSupportLevel.translation ||
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DialogueSupportLevel.correction ||
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DialogueSupportLevel.skipped => true,
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_ => false,
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};
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if (local == LocalDialogueVerdict.accepted && aiAccepted) {
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return DialogueTurnDecision(
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canAdvance: true,
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evidenceOutcome: !isFreeScene
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? (assisted ? EvidenceKind.assisted : EvidenceKind.pending)
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: (assisted
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? EvidenceKind.assisted
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: EvidenceKind.independentSuccess),
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validationSource: DialogueValidationSource.localAndAi,
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supportLevel: supportLevel,
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feedback: ai?.explanation,
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);
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}
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if (aiAccepted) {
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return DialogueTurnDecision(
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canAdvance: true,
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evidenceOutcome: assisted ? EvidenceKind.assisted : EvidenceKind.pending,
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validationSource: DialogueValidationSource.ai,
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supportLevel: supportLevel == DialogueSupportLevel.none
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? DialogueSupportLevel.validationOnly
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: supportLevel,
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feedback: ai?.explanation,
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);
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}
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if (local == LocalDialogueVerdict.accepted) {
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final aiExplicitlyRejected =
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ai?.verdict == DialogueAiVerdict.correctable ||
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ai?.verdict == DialogueAiVerdict.offTopic;
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if (aiExplicitlyRejected) {
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return DialogueTurnDecision(
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canAdvance: false,
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evidenceOutcome: assisted
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? EvidenceKind.assisted
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: EvidenceKind.pending,
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validationSource: DialogueValidationSource.disagreement,
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supportLevel: supportLevel,
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feedback: ai?.explanation,
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suggestion: ai?.suggestion,
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);
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}
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final source = aiWasAttempted
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? (ai == null
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? DialogueValidationSource.unavailable
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: DialogueValidationSource.disagreement)
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: DialogueValidationSource.local;
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return DialogueTurnDecision(
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canAdvance: true,
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evidenceOutcome: assisted
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? EvidenceKind.assisted
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: aiWasAttempted
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? EvidenceKind.pending
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: isFreeScene
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? EvidenceKind.independentSuccess
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: EvidenceKind.pending,
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validationSource: source,
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supportLevel: supportLevel,
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feedback: ai?.explanation,
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);
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}
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return DialogueTurnDecision(
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canAdvance: false,
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evidenceOutcome: assisted ? EvidenceKind.assisted : EvidenceKind.pending,
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validationSource: aiWasAttempted
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? (ai == null
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? DialogueValidationSource.unavailable
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: DialogueValidationSource.localAndAi)
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: DialogueValidationSource.local,
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supportLevel: supportLevel,
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feedback: ai?.explanation ?? '暂时无法确认这句是否完成本轮任务，请换一种说法。',
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suggestion: ai?.suggestion,
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);
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}
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