34 lines
1.3 KiB
TypeScript
34 lines
1.3 KiB
TypeScript
import { TeacherError } from './config-client';
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export interface TeacherSuggestions {
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intro: string;
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questions: string[];
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}
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/** Validate model output before it can become interactive student questions. */
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export function parseTeacherSuggestions(response: string): TeacherSuggestions {
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const invalid = () => new TeacherError(
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502,
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'teacher_suggestions_invalid',
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'老师这次没能整理好可以讨论的问题，请再试一次，或直接告诉老师你的想法。'
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);
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const text = response.trim();
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const fenced = text.match(/^```(?:json)?\s*\n([\s\S]*?)\n```$/i);
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let parsed: unknown;
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try {
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parsed = JSON.parse(fenced ? fenced[1] : text);
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} catch {
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throw invalid();
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}
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if (!parsed || typeof parsed !== 'object' || Array.isArray(parsed)) throw invalid();
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const { intro, questions } = parsed as Record<string, unknown>;
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if (
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typeof intro !== 'string' || !intro.trim() || intro.trim().length > 400 ||
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!Array.isArray(questions) || questions.length < 2 || questions.length > 3 ||
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questions.some((question) => typeof question !== 'string' || !question.trim() || question.trim().length > 120)
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) throw invalid();
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const uniqueQuestions = [...new Set(questions.map((question: string) => question.trim()))];
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if (uniqueQuestions.length < 2) throw invalid();
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return { intro: intro.trim(), questions: uniqueQuestions };
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}
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