feat: implement QuestionBank CRUD with pagination and template query

- Add pagination support to findAll (page, limit query params) - Add findByTemplateId method to service - Add GET /by-template/:templateId endpoint to controller - Service already includes CRUD for QuestionBank and QuestionBankItem
2026-04-23 17:19:11 +08:00
commit 0a9588abb7
492 changed files with 112453 additions and 0 deletions
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+import { AIMessage } from '@langchain/core/messages';
+import { RunnableConfig } from '@langchain/core/runnables';
+import { EvaluationState } from '../state';
+
+/**
+ * Node responsible for presenting the current question or follow-up to the user.
+ */
+export const interviewerNode = async (
+  state: EvaluationState,
+  config?: RunnableConfig,
+): Promise<Partial<EvaluationState>> => {
+  const { questions, currentQuestionIndex, shouldFollowUp, messages } = state;
+
+  console.log('[InterviewerNode] Entering node...', {
+    numQuestions: questions?.length,
+    currentIndex: currentQuestionIndex,
+    shouldFollowUp,
+    numMessages: messages?.length,
+  });
+
+  if (!questions || questions.length === 0) {
+    const isZh = state.language === 'zh';
+    const isJa = state.language === 'ja';
+    const msg = isZh
+      ? '很抱歉，我无法为此会话生成任何问题。'
+      : isJa
+        ? '申し訳ありませんが、このセッションの問題を生成できませんでした。'
+        : "I'm sorry, I couldn't generate any questions for this session.";
+    return {
+      messages: [new AIMessage(msg)],
+    };
+  }
+
+  const currentQuestion = questions[currentQuestionIndex];
+
+  // If it's a follow-up, we add a prefix to the label later.
+  // If we've run out of questions and no follow-up requested, we shouldn't be here, but let's be safe.
+  if (currentQuestionIndex >= questions.length) {
+    return { shouldFollowUp: false };
+  }
+
+  const isZh = state.language === 'zh';
+  const isJa = state.language === 'ja';
+
+  let prompt = '';
+
+  if (
+    shouldFollowUp &&
+    state.feedbackHistory &&
+    state.feedbackHistory.length > 0
+  ) {
+    // Construct a follow-up prompt based on last feedback
+    const lastFeedbackMsg =
+      state.feedbackHistory[state.feedbackHistory.length - 1];
+    const feedbackText = lastFeedbackMsg.content.toString();
+
+    // Extract the "Feedback: ..." part if possible, otherwise use whole text
+    const feedbackMatch = feedbackText.match(
+      /(?:Feedback|反馈|フィードバック): ([\s\S]*)/i,
+    );
+    const specificFeedback = feedbackMatch
+      ? feedbackMatch[1].trim()
+      : feedbackText;
+
+    const followUpLabel = isZh
+      ? '补充追问'
+      : isJa
+        ? '追加の質問'
+        : 'Follow-up Clarification';
+    const followUpInstruction = isZh
+      ? '根据以上反馈，请补充更具体的信息：'
+      : isJa
+        ? '上記のフィードバックに基づき、より具体的な情報を追加してください：'
+        : 'Based on the feedback above, please provide more specific details:';
+
+    prompt = `${followUpLabel}\n\n${specificFeedback}\n\n${followUpInstruction}`;
+  } else {
+    // Standard question presentation
+    const label = isZh
+      ? `问题 ${currentQuestionIndex + 1}`
+      : isJa
+        ? `質問 ${currentQuestionIndex + 1}`
+        : `Question ${currentQuestionIndex + 1}`;
+
+    const instruction = isZh
+      ? '请提供您的回答。'
+      : isJa
+        ? '回答を入力してください。'
+        : 'Please provide your answer.';
+
+    prompt = `${label}: ${currentQuestion.questionText}\n\n${instruction}`;
+  }
+
+  console.log('[InterviewerNode] Returning question:', { currentQuestionIndex, questionText: currentQuestion?.questionText });
+  return {
+    messages: [new AIMessage(prompt)],
+    shouldFollowUp: false,
+  };
+};