Module Update

src/app/(dashboard)/teacher/exams/[id]/build/page.tsx

@@ -0,0 +1,76 @@
+import { notFound } from "next/navigation"
+import { ExamAssembly } from "@/modules/exams/components/exam-assembly"
+import { getExamById } from "@/modules/exams/data-access"
+import { getQuestions } from "@/modules/questions/data-access"
+import type { Question } from "@/modules/questions/types"
+import type { ExamNode } from "@/modules/exams/components/assembly/selected-question-list"
+import { createId } from "@paralleldrive/cuid2"
+
+export default async function BuildExamPage({ params }: { params: Promise<{ id: string }> }) {
+  const { id } = await params
+  
+  const exam = await getExamById(id)
+  if (!exam) return notFound()
+
+  // Fetch all available questions (for selection pool)
+  // In a real app, this might be paginated or filtered by exam subject/grade
+  const { data: questionsData } = await getQuestions({ pageSize: 100 })
+  
+  const questionOptions: Question[] = questionsData.map((q) => ({
+    id: q.id,
+    content: q.content as any,
+    type: q.type as any,
+    difficulty: q.difficulty ?? 1,
+    createdAt: new Date(q.createdAt),
+    updatedAt: new Date(q.updatedAt),
+    author: q.author ? {
+      id: q.author.id,
+      name: q.author.name || "Unknown",
+      image: q.author.image || null
+    } : null,
+    knowledgePoints: (q.questionsToKnowledgePoints || []).map((kp) => ({
+      id: kp.knowledgePoint.id,
+      name: kp.knowledgePoint.name
+    }))
+  }))
+
+  const initialSelected = (exam.questions || []).map(q => ({
+    id: q.id,
+    score: q.score || 0
+  }))
+
+  // Prepare initialStructure on server side to avoid hydration mismatch with random IDs
+  let initialStructure: ExamNode[] = exam.structure as ExamNode[] || []
+  
+  if (initialStructure.length === 0 && initialSelected.length > 0) {
+    initialStructure = initialSelected.map(s => ({
+      id: createId(), // Generate stable ID on server
+      type: 'question',
+      questionId: s.id,
+      score: s.score
+    }))
+  }
+
+  return (
+    <div className="flex h-full flex-col space-y-8 p-8">
+      <div className="flex items-center justify-between">
+        <div>
+          <h2 className="text-2xl font-bold tracking-tight">Build Exam</h2>
+          <p className="text-muted-foreground">Add questions and adjust scores.</p>
+        </div>
+      </div>
+      <ExamAssembly
+        examId={exam.id}
+        title={exam.title}
+        subject={exam.subject}
+        grade={exam.grade}
+        difficulty={exam.difficulty}
+        totalScore={exam.totalScore}
+        durationMin={exam.durationMin}
+        initialSelected={initialSelected}
+        initialStructure={initialStructure}
+        questionOptions={questionOptions}
+      />
+    </div>
+  )
+}