feat: enhance admin pages

src/app/(withAuth)/admin/problems/[problemId]/page.tsx

@@ -0,0 +1,118 @@
+import type { NextPage } from 'next';
+
+import { logger } from '../../../../../infrastructures/pino';
+import { prisma } from '../../../../../infrastructures/prisma';
+import { Box, Heading, Table, Tbody, Td, Th, Thead, Tr, VStack } from '../../../../../infrastructures/useClient/chakra';
+import type { CourseId, ProblemId } from '../../../../../problems/problemData';
+import { courseIdToLectureIds } from '../../../../../problems/problemData';
+import { getEmailFromSession } from '../../../../../utils/session';
+import { dayjs } from '../../../../utils/dayjs';
+
+interface UserProblemInfo {
+  userId: string;
+  email?: string;
+  courseId: string;
+  lectureIndex: number;
+  problemId: string;
+  completedAt: Date | null;
+  elapsedMilliseconds: number;
+  incorrectSubmissionCount: number;
+}
+
+type Props = {
+  params: { problemId: ProblemId };
+};
+
+const StatisticsPage: NextPage<Props> = async (props) => {
+  const userInfos = await fetchUserProblemInfo(props.params.problemId);
+
+  return (
+    <VStack align="stretch" spacing={6}>
+      <Heading as="h1">問題: {props.params.problemId}</Heading>
+      <Box overflowX="auto">
+        <Table size="sm">
+          <Thead>
+            <Tr>
+              <Th>ユーザーID</Th>
+              <Th>Email</Th>
+              <Th>コース</Th>
+              <Th>講義</Th>
+              <Th>完了日時</Th>
+              <Th>所要時間</Th>
+              <Th>不正解回数</Th>
+            </Tr>
+          </Thead>
+          <Tbody>
+            {userInfos.map((info) => (
+              <Tr key={info.userId}>
+                <Td>{info.userId}</Td>
+                <Td>{info.email || 'N/A'}</Td>
+                <Td>{info.courseId}</Td>
+                <Td>{info.lectureIndex + 1}</Td>
+                <Td>{info.completedAt ? dayjs(info.completedAt).format('YYYY-MM-DD HH:mm:ss') : '未完了'}</Td>
+                <Td>{info.elapsedMilliseconds ? dayjs.duration(info.elapsedMilliseconds).humanize() : 'N/A'}</Td>
+                <Td>{info.incorrectSubmissionCount}</Td>
+              </Tr>
+            ))}
+          </Tbody>
+        </Table>
+      </Box>
+    </VStack>
+  );
+};
+
+async function fetchUserProblemInfo(problemId: ProblemId): Promise<UserProblemInfo[]> {
+  try {
+    const sessions = await prisma.problemSession.findMany({
+      where: {
+        problemId,
+        // eslint-disable-next-line unicorn/no-null
+        completedAt: { not: null },
+        submissions: {
+          some: { isCorrect: true },
+        },
+      },
+      orderBy: {
+        completedAt: 'asc',
+      },
+      distinct: ['userId'],
+      include: {
+        submissions: { where: { isCorrect: false }, select: { id: true } },
+      },
+    });
+    console.log('sessions:', sessions);
+
+    return await Promise.all(
+      sessions.map(async (session) => ({
+        userId: session.userId,
+        email: await getEmailFromSession(session.userId),
+        courseId: session.courseId,
+        lectureIndex: getLectureIndex(session.courseId, session.lectureId),
+        problemId: session.problemId,
+        completedAt: session.completedAt,
+        elapsedMilliseconds: session.elapsedMilliseconds,
+        incorrectSubmissionCount: session.submissions.length,
+      }))
+    );
+  } catch (error) {
+    logger.error(`Failed to fetch user problem info for ${problemId}: %o`, error);
+    return [];
+  }
+}
+
+function getLectureIndex(courseId: string, lectureId: string): number {
+  const lectureIds = courseIdToLectureIds[courseId as CourseId];
+  if (!lectureIds) {
+    logger.warn(`Course (${courseId}) not found.`);
+    return -1;
+  }
+  for (const [index, lectureId_] of lectureIds.entries()) {
+    if (lectureId_.includes(lectureId)) {
+      return index;
+    }
+  }
+  logger.warn(`Lecture (${lectureId}) not found in course (${courseId}).`);
+  return -1;
+}
+
+export default StatisticsPage;

src/app/(withAuth)/admin/statistics/page.tsx

@@ -2,7 +2,18 @@ import type { NextPage } from 'next';
 
 import { logger } from '../../../../infrastructures/pino';
 import { prisma } from '../../../../infrastructures/prisma';
-import { Box, Heading, Table, Tbody, Td, Th, Thead, Tr, VStack } from '../../../../infrastructures/useClient/chakra';
+import {
+  Box,
+  Heading,
+  Link,
+  Table,
+  Tbody,
+  Td,
+  Th,
+  Thead,
+  Tr,
+  VStack,
+} from '../../../../infrastructures/useClient/chakra';
 import type { CourseId } from '../../../../problems/problemData';
 import { courseIdToLectureIndexToProblemIds } from '../../../../problems/problemData';
 import { dayjs } from '../../../utils/dayjs';
@@ -41,7 +52,9 @@ const StatisticsPage: NextPage = async () => {
               <Tr key={`${stat.courseId}-${stat.lectureIndex}-${stat.problemId}`}>
                 <Td>{stat.courseId}</Td>
                 <Td>{stat.lectureIndex + 1}</Td>
-                <Td>{stat.problemId}</Td>
+                <Td>
+                  <Link href={`/admin/problems/${stat.problemId}`}>{stat.problemId}</Link>
+                </Td>
                 <Td>{stat.userCount}</Td>
                 <Td>{stat.completedUserCount}</Td>
                 <Td>{dayjs.duration(stat.avgElapsedMilliseconds).humanize()}</Td>