新增数学思维自学板块与考试板块(9模块154课+初一上5套真实试卷客观题)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/app/exam/actions.ts

@@ -0,0 +1,37 @@
+"use server";
+
+// xuchao: 考试判分——按卷面题判分,错题进错题本,达标联动数学打卡
+import { revalidatePath } from "next/cache";
+import { getSessionUser } from "@/lib/auth";
+import { gradeAnswers, type AnswerValue } from "@/lib/grammar";
+import { getPaper, paperQuestions, recordExam } from "@/lib/exam";
+import { recordWrong } from "@/lib/wrongbook";
+
+export type ExamResult =
+  | { score: number; passed: boolean; correct: number; total: number; detail: boolean[] }
+  | { error: string };
+
+// 提交试卷:服务端判分、记录成绩、错题入库;可重考,取最近一次成绩
+export async function takeExam(paperId: string, answers: AnswerValue[]): Promise<ExamResult> {
+  const user = await getSessionUser();
+  if (!user || user.role !== "child") return { error: "会话无效,请重新激活设备" };
+
+  const paper = await getPaper(paperId);
+  if (!paper) return { error: "试卷不存在" };
+
+  const questions = paperQuestions(paper);
+  if (questions.length === 0) return { error: "试卷暂无题目" };
+
+  const g = gradeAnswers(questions, answers);
+  questions.forEach((q, i) => {
+    if (!g.detail[i]) void recordWrong(user.id, "exam", paperId, paper.title, q, answers[i]);
+  });
+  await recordExam(user.id, paperId, paper.title, g.score, g.correct, g.total, g.passed, answers);
+
+  revalidatePath("/exam");
+  revalidatePath(`/exam/${paperId}`);
+  revalidatePath("/kid");
+  revalidatePath("/parent");
+  revalidatePath("/wrongbook");
+  return g;
+}