完整性更新

现在已经实现了大部分基础功能

src/modules/dashboard/data-access.ts

@@ -0,0 +1,103 @@
+import "server-only"
+
+import { cache } from "react"
+import { count, desc, eq, gt } from "drizzle-orm"
+
+import { db } from "@/shared/db"
+import {
+  chapters,
+  classes,
+  exams,
+  homeworkAssignments,
+  homeworkSubmissions,
+  questions,
+  sessions,
+  textbooks,
+  users,
+} from "@/shared/db/schema"
+import type { AdminDashboardData } from "./types"
+
+export const getAdminDashboardData = cache(async (): Promise<AdminDashboardData> => {
+  const now = new Date()
+
+  const [
+    activeSessionsRow,
+    userCountRow,
+    userRoleRows,
+    classCountRow,
+    textbookCountRow,
+    chapterCountRow,
+    questionCountRow,
+    examCountRow,
+    homeworkAssignmentCountRow,
+    homeworkAssignmentPublishedCountRow,
+    homeworkSubmissionCountRow,
+    homeworkSubmissionToGradeCountRow,
+    recentUserRows,
+  ] = await Promise.all([
+    db.select({ value: count() }).from(sessions).where(gt(sessions.expires, now)),
+    db.select({ value: count() }).from(users),
+    db.select({ role: users.role, value: count() }).from(users).groupBy(users.role),
+    db.select({ value: count() }).from(classes),
+    db.select({ value: count() }).from(textbooks),
+    db.select({ value: count() }).from(chapters),
+    db.select({ value: count() }).from(questions),
+    db.select({ value: count() }).from(exams),
+    db.select({ value: count() }).from(homeworkAssignments),
+    db.select({ value: count() }).from(homeworkAssignments).where(eq(homeworkAssignments.status, "published")),
+    db.select({ value: count() }).from(homeworkSubmissions),
+    db.select({ value: count() }).from(homeworkSubmissions).where(eq(homeworkSubmissions.status, "submitted")),
+    db
+      .select({
+        id: users.id,
+        name: users.name,
+        email: users.email,
+        role: users.role,
+        createdAt: users.createdAt,
+      })
+      .from(users)
+      .orderBy(desc(users.createdAt))
+      .limit(8),
+  ])
+
+  const activeSessionsCount = Number(activeSessionsRow[0]?.value ?? 0)
+  const userCount = Number(userCountRow[0]?.value ?? 0)
+  const classCount = Number(classCountRow[0]?.value ?? 0)
+  const textbookCount = Number(textbookCountRow[0]?.value ?? 0)
+  const chapterCount = Number(chapterCountRow[0]?.value ?? 0)
+  const questionCount = Number(questionCountRow[0]?.value ?? 0)
+  const examCount = Number(examCountRow[0]?.value ?? 0)
+  const homeworkAssignmentCount = Number(homeworkAssignmentCountRow[0]?.value ?? 0)
+  const homeworkAssignmentPublishedCount = Number(homeworkAssignmentPublishedCountRow[0]?.value ?? 0)
+  const homeworkSubmissionCount = Number(homeworkSubmissionCountRow[0]?.value ?? 0)
+  const homeworkSubmissionToGradeCount = Number(homeworkSubmissionToGradeCountRow[0]?.value ?? 0)
+
+  const userRoleCounts = userRoleRows
+    .map((r) => ({ role: r.role ?? "unknown", count: Number(r.value ?? 0) }))
+    .sort((a, b) => b.count - a.count)
+
+  const recentUsers = recentUserRows.map((u) => ({
+    id: u.id,
+    name: u.name,
+    email: u.email,
+    role: u.role,
+    createdAt: u.createdAt.toISOString(),
+  }))
+
+  return {
+    activeSessionsCount,
+    userCount,
+    userRoleCounts,
+    classCount,
+    textbookCount,
+    chapterCount,
+    questionCount,
+    examCount,
+    homeworkAssignmentCount,
+    homeworkAssignmentPublishedCount,
+    homeworkSubmissionCount,
+    homeworkSubmissionToGradeCount,
+    recentUsers,
+  }
+})
+