refactor: consolidate admin authorization into layout and introduce AdminShell component

app/admin/backend/actions.ts

@@ -0,0 +1,78 @@
+"use server";
+
+import { readdirSync } from "fs";
+import { join } from "path";
+
+export async function refetchPlatform(
+  platform: string
+): Promise<{ count: number | null }> {
+  // Validate platform against actual files to prevent path traversal
+  const dir = join(process.cwd(), "lib", "followers");
+  const validPlatforms = readdirSync(dir)
+    .filter((f) => f.endsWith(".ts") && f !== "index.ts")
+    .map((f) => f.replace(".ts", ""));
+
+  if (!validPlatforms.includes(platform)) {
+    throw new Error("Invalid platform");
+  }
+
+  let count: number | null = null;
+  let tiktokProfile = null;
+
+  try {
+    const mod = await import(`@/lib/followers/${platform}`);
+    const fns = Object.entries(mod).filter(
+      ([, v]) => typeof v === "function"
+    ) as [string, Function][];
+
+    // Prefer function with "Count" or "Member" in name
+    const countFn = fns.find(([name]) => /count|member/i.test(name));
+    const fn = countFn || fns[0];
+
+    if (fn) {
+      const result = await fn[1]();
+      if (typeof result === "number") {
+        count = result;
+      } else if (result === null) {
+        count = null;
+      } else if (
+        result &&
+        typeof result === "object" &&
+        "followerCount" in result
+      ) {
+        count = result.followerCount;
+        tiktokProfile = result;
+      }
+    }
+  } catch (err) {
+    console.error(`Failed to fetch ${platform}:`, err);
+    throw new Error(`Failed to fetch ${platform}`);
+  }
+
+  // Update Redis cache
+  try {
+    const { getRedisClient } = await import("@/lib/redis");
+    const redis = await getRedisClient();
+
+    const cached = await redis.get("erika:follower_counts");
+    const counts: Record<string, number | null> = cached
+      ? JSON.parse(cached)
+      : {};
+    counts[platform] = count;
+    await redis.set("erika:follower_counts", JSON.stringify(counts), {
+      ex: 3600,
+    });
+
+    if (tiktokProfile) {
+      await redis.set(
+        "erika:tiktok_profile",
+        JSON.stringify(tiktokProfile),
+        { ex: 3600 }
+      );
+    }
+  } catch {
+    // Redis unavailable
+  }
+
+  return { count };
+}

app/admin/backend/client.tsx

@@ -0,0 +1,81 @@
+"use client";
+
+import { useState } from "react";
+import {
+  Card,
+  CardContent,
+  CardHeader,
+  CardTitle,
+} from "@/components/ui/card";
+import { Button } from "@/components/ui/button";
+import { Badge } from "@/components/ui/badge";
+import { RefreshCw } from "lucide-react";
+import { refetchPlatform } from "./actions";
+import { toast } from "sonner";
+
+interface Platform {
+  name: string;
+  cachedCount: number | null;
+}
+
+function formatCount(n: number | null): string {
+  if (n === null) return "No data";
+  if (n >= 1_000_000) return `${(n / 1_000_000).toFixed(1)}M`;
+  if (n >= 1_000) return `${(n / 1_000).toFixed(1)}K`;
+  return n.toString();
+}
+
+export function BackendClient({ platforms }: { platforms: Platform[] }) {
+  const [data, setData] = useState<Platform[]>(platforms);
+  const [loading, setLoading] = useState<string | null>(null);
+
+  const handleRefetch = async (platform: string) => {
+    setLoading(platform);
+    try {
+      const result = await refetchPlatform(platform);
+      setData((prev) =>
+        prev.map((p) =>
+          p.name === platform ? { ...p, cachedCount: result.count } : p
+        )
+      );
+      toast.success(`${platform} refetched successfully`);
+    } catch {
+      toast.error(`Failed to refetch ${platform}`);
+    } finally {
+      setLoading(null);
+    }
+  };
+
+  return (
+    <div className="grid gap-4 sm:grid-cols-2">
+      {data.map((p) => (
+        <Card key={p.name}>
+          <CardHeader className="flex flex-row items-center justify-between space-y-0 pb-2">
+            <CardTitle className="text-sm font-medium capitalize">
+              {p.name}
+            </CardTitle>
+            <Badge
+              variant={p.cachedCount !== null ? "default" : "secondary"}
+            >
+              {formatCount(p.cachedCount)}
+            </Badge>
+          </CardHeader>
+          <CardContent>
+            <Button
+              variant="outline"
+              size="sm"
+              className="gap-2"
+              disabled={loading !== null}
+              onClick={() => handleRefetch(p.name)}
+            >
+              <RefreshCw
+                className={`w-3 h-3 ${loading === p.name ? "animate-spin" : ""}`}
+              />
+              Refetch
+            </Button>
+          </CardContent>
+        </Card>
+      ))}
+    </div>
+  );
+}

app/admin/backend/page.tsx

@@ -0,0 +1,46 @@
+import { AdminShell } from "@/components/admin-shell";
+import { readdirSync } from "fs";
+import { join } from "path";
+import { BackendClient } from "./client";
+
+export const dynamic = "force-dynamic";
+
+export default async function BackendPage() {
+  // Auto-discover platform files from lib/followers/
+  const dir = join(process.cwd(), "lib", "followers");
+  const platforms = readdirSync(dir)
+    .filter((f) => f.endsWith(".ts") && f !== "index.ts")
+    .map((f) => f.replace(".ts", ""));
+
+  // Read current cached counts from Redis
+  let counts: Record<string, number | null> = {};
+  try {
+    const { getRedisClient } = await import("@/lib/redis");
+    const redis = await getRedisClient();
+    const cached = await redis.get("erika:follower_counts");
+    if (cached) {
+      counts = JSON.parse(cached);
+    }
+  } catch {
+    // Redis unavailable
+  }
+
+  const platformData = platforms.map((p) => ({
+    name: p,
+    cachedCount: counts[p] ?? null,
+  }));
+
+  return (
+    <AdminShell>
+      <div className="p-6 space-y-6 max-w-4xl mx-auto w-full">
+        <div>
+          <h1 className="text-3xl font-bold tracking-tight">Backend</h1>
+          <p className="text-muted-foreground mt-1">
+            Follower API connections and cache management
+          </p>
+        </div>
+        <BackendClient platforms={platformData} />
+      </div>
+    </AdminShell>
+  );
+}

app/admin/form/[id]/client.tsx

@@ -14,7 +14,7 @@ import { Separator } from "@/components/ui/separator";
 import { RadioGroup, RadioGroupItem } from "@/components/ui/radio-group";
 import { Checkbox } from "@/components/ui/checkbox";
 import { toast } from "sonner";
-import { updateForm } from "@/app/actions/form";
+import { updateForm } from "@/app/admin/form/actions";
 import {
   createQuestion,
   updateQuestion,

app/admin/form/[id]/extra/client.tsx

@@ -8,7 +8,7 @@ import { Input } from "@/components/ui/input";
 import { Textarea } from "@/components/ui/textarea";
 import { Label } from "@/components/ui/label";
 import { toast } from "sonner";
-import { updateForm } from "@/app/actions/form";
+import { updateForm } from "@/app/admin/form/actions";
 import { Loader2, Save } from "lucide-react";
 
 interface FormExtraClientProps {

app/admin/form/[id]/layout.tsx

@@ -1,6 +1,3 @@
-import { getServerSession } from "next-auth";
-import { authOptions } from "@/app/api/auth/[...nextauth]/route";
-import { redirect } from "next/navigation";
 import { SidebarProvider, SidebarTrigger } from "@/components/ui/sidebar";
 import { AdminSidebar } from "./client";
 import { Metadata } from "next";
@@ -19,16 +16,6 @@ export default async function AdminFormLayout(
   }
 ) {
   const params = await props.params;
-  const session = await getServerSession(authOptions);
-  const adminIds = (process.env.ADMIN_DISCORD_IDS ?? "")
-    .split(",")
-    .map((s) => s.trim())
-    .filter(Boolean);
-  const discordId = (session?.user as any)?.discordId;
-
-  if (!discordId || !adminIds.includes(discordId)) {
-    redirect("/form");
-  }
 
   return (
     <SidebarProvider>

app/admin/form/actions.ts

@@ -51,5 +51,4 @@ export async function deleteForm(id: string) {
 
   await db.delete(forms).where(eq(forms.id, id));
   revalidatePath("/admin/form");
-  redirect("/admin/form");
 }

app/admin/form/page.tsx

@@ -1,5 +1,4 @@
 import { db } from "@/db";
-import { forms } from "@/db/schema";
 import Link from "next/link";
 import { Button } from "@/components/ui/button";
 import {
@@ -11,103 +10,91 @@ import {
   TableRow,
 } from "@/components/ui/table";
 import { Badge } from "@/components/ui/badge";
-import { Plus, Trash2 } from "lucide-react";
+import { Plus } from "lucide-react";
 import { redirect } from "next/navigation";
-import { deleteForm } from "@/app/actions/form";
-import { getServerSession } from "next-auth";
-import { authOptions } from "@/app/api/auth/[...nextauth]/route";
+import { DeleteFormButton } from "@/components/delete-buttons";
+import { AdminShell } from "@/components/admin-shell";
 
 export const dynamic = "force-dynamic";
 
 export default async function AdminFormsPage() {
-  const session = await getServerSession(authOptions);
-  const adminIds = (process.env.ADMIN_DISCORD_IDS ?? "")
-    .split(",")
-    .map((s) => s.trim())
-    .filter(Boolean);
-  const discordId = (session?.user as any)?.discordId;
-
-  if (!discordId || !adminIds.includes(discordId)) {
-    redirect("/");
-  }
   const formsList = await db.query.forms.findMany({
     orderBy: (f, { desc }) => [desc(f.createdAt)],
   });
 
   return (
-    <div className="space-y-6 max-w-4xl mx-auto p-4 md:p-6 pb-12">
-      <div className="flex items-center justify-between">
-        <div>
-          <h1 className="text-3xl font-bold tracking-tight">Forms</h1>
-          <p className="text-muted-foreground mt-1">
-            Manage your custom forms and view submissions.
-          </p>
+    <AdminShell>
+      <div className="space-y-6 p-4 md:p-6 pb-12 w-full">
+        <div className="flex items-center justify-between">
+          <div>
+            <h1 className="text-3xl font-bold tracking-tight">Forms</h1>
+            <p className="text-muted-foreground mt-1">
+              Manage your custom forms and view submissions.
+            </p>
+          </div>
+          <form action={async () => {
+            "use server";
+            const { forms } = await import("@/db/schema");
+            const [newForm] = await db.insert(forms).values({
+              title: "New Form",
+              description: "",
+            }).returning();
+            redirect(`/admin/form/${newForm.id}`);
+          }}>
+            <Button type="submit">
+              <Plus className="mr-2 h-4 w-4" />
+              Create Form
+            </Button>
+          </form>
         </div>
-        <form action={async () => {
-          "use server";
-          const [newForm] = await db.insert(forms).values({
-            title: "New Form",
-            description: "",
-          }).returning();
-          redirect(`/admin/form/${newForm.id}`);
-        }}>
-          <Button type="submit">
-            <Plus className="mr-2 h-4 w-4" />
-            Create Form
-          </Button>
-        </form>
-      </div>
 
-      <div className="border rounded-md">
-        <Table>
-          <TableHeader>
-            <TableRow>
-              <TableHead>Title</TableHead>
-              <TableHead>Status</TableHead>
-              <TableHead>Created</TableHead>
-              <TableHead className="text-right">Actions</TableHead>
-            </TableRow>
-          </TableHeader>
-          <TableBody>
-            {formsList.length === 0 ? (
+        <div className="border rounded-md">
+          <Table>
+            <TableHeader>
               <TableRow>
-                <TableCell colSpan={4} className="h-24 text-center text-muted-foreground">
-                  No forms found. Create one to get started.
-                </TableCell>
+                <TableHead>Title</TableHead>
+                <TableHead>Status</TableHead>
+                <TableHead>Created</TableHead>
+                <TableHead className="text-right">Actions</TableHead>
               </TableRow>
-            ) : (
-              formsList.map((form) => (
-                <TableRow key={form.id}>
-                  <TableCell className="font-medium">{form.title}</TableCell>
-                  <TableCell>
-                    {form.isOpen ? (
-                      <Badge variant="default">Open</Badge>
-                    ) : (
-                      <Badge variant="secondary">Closed</Badge>
-                    )}
-                  </TableCell>
-                  <TableCell>
-                    {form.createdAt ? new Date(form.createdAt).toLocaleDateString() : 'N/A'}
-                  </TableCell>
-                  <TableCell className="text-right space-x-2">
-                    <Button variant="outline" asChild size="sm">
-                      <Link href={`/admin/form/${form.id}`}>Edit</Link>
-                    </Button>
-                    <Button variant="outline" asChild size="sm">
-                      <Link href={`/admin/form/${form.id}/result`}>Results</Link>
-                    </Button>
-                    <form className="inline-block" action={deleteForm.bind(null, form.id)}>
-                      <Button variant="outline" size="sm" type="submit" className="text-destructive hover:text-destructive">
-                        <Trash2 className="h-4 w-4" />
-                      </Button>
-                    </form>
+            </TableHeader>
+            <TableBody>
+              {formsList.length === 0 ? (
+                <TableRow>
+                  <TableCell colSpan={4} className="h-24 text-center text-muted-foreground">
+                    No forms found. Create one to get started.
                   </TableCell>
                 </TableRow>
-              ))
-            )}
-          </TableBody>
-        </Table>
+              ) : (
+                formsList.map((form) => (
+                  <TableRow key={form.id}>
+                    <TableCell className="font-medium">{form.title}</TableCell>
+                    <TableCell>
+                      {form.isOpen ? (
+                        <Badge variant="default">Open</Badge>
+                      ) : (
+                        <Badge variant="secondary">Closed</Badge>
+                      )}
+                    </TableCell>
+                    <TableCell>
+                      {form.createdAt ? new Date(form.createdAt).toLocaleDateString() : 'N/A'}
+                    </TableCell>
+                    <TableCell className="text-right space-x-2">
+                      <Button variant="outline" asChild size="sm">
+                        <Link href={`/admin/form/${form.id}`}>Edit</Link>
+                      </Button>
+                      <Button variant="outline" asChild size="sm">
+                        <Link href={`/admin/form/${form.id}/result`}>Results</Link>
+                      </Button>
+                      <DeleteFormButton formId={form.id} />
+                    </TableCell>
+                  </TableRow>
+                ))
+              )}
+            </TableBody>
+          </Table>
+        </div>
       </div>
-    </div>
+    </AdminShell>
   );
 }

app/admin/layout.tsx

@@ -0,0 +1,22 @@
+import { getServerSession } from "next-auth";
+import { authOptions } from "@/app/api/auth/[...nextauth]/route";
+import { redirect } from "next/navigation";
+
+export default async function AdminLayout({
+  children,
+}: {
+  children: React.ReactNode;
+}) {
+  const session = await getServerSession(authOptions);
+  const adminIds = (process.env.ADMIN_DISCORD_IDS ?? "")
+    .split(",")
+    .map((s) => s.trim())
+    .filter(Boolean);
+  const discordId = (session?.user as any)?.discordId;
+
+  if (!discordId || !adminIds.includes(discordId)) {
+    redirect("/");
+  }
+
+  return <>{children}</>;
+}

app/admin/page.tsx

@@ -0,0 +1,56 @@
+import { AdminShell } from "@/components/admin-shell";
+import Link from "next/link";
+import {
+  Card,
+  CardHeader,
+  CardTitle,
+  CardDescription,
+} from "@/components/ui/card";
+import { ClipboardList, Server } from "lucide-react";
+
+export default function AdminPage() {
+  return (
+    <AdminShell>
+      <div className="p-6 space-y-6 max-w-4xl mx-auto w-full">
+        <div>
+          <h1 className="text-3xl font-bold tracking-tight">Dashboard</h1>
+          <p className="text-muted-foreground mt-1">Admin control panel</p>
+        </div>
+
+        <div className="grid gap-4 sm:grid-cols-2">
+          <Link href="/admin/form">
+            <Card className="hover:border-primary/50 transition-colors cursor-pointer">
+              <CardHeader>
+                <div className="flex items-center gap-3">
+                  <ClipboardList className="w-5 h-5 text-primary" />
+                  <div>
+                    <CardTitle>Forms</CardTitle>
+                    <CardDescription>
+                      Manage custom forms and view submissions
+                    </CardDescription>
+                  </div>
+                </div>
+              </CardHeader>
+            </Card>
+          </Link>
+
+          <Link href="/admin/backend">
+            <Card className="hover:border-primary/50 transition-colors cursor-pointer">
+              <CardHeader>
+                <div className="flex items-center gap-3">
+                  <Server className="w-5 h-5 text-primary" />
+                  <div>
+                    <CardTitle>Backend</CardTitle>
+                    <CardDescription>
+                      Follower API settings and cache management
+                    </CardDescription>
+                  </div>
+                </div>
+              </CardHeader>
+            </Card>
+          </Link>
+        </div>
+      </div>
+    </AdminShell>
+  );
+}

components/admin-shell.tsx

@@ -0,0 +1,89 @@
+"use client";
+
+import { usePathname } from "next/navigation";
+import Link from "next/link";
+import {
+  SidebarProvider,
+  Sidebar,
+  SidebarContent,
+  SidebarGroup,
+  SidebarGroupLabel,
+  SidebarGroupContent,
+  SidebarMenu,
+  SidebarMenuItem,
+  SidebarMenuButton,
+  SidebarHeader,
+  SidebarInset,
+  SidebarTrigger,
+} from "@/components/ui/sidebar";
+import { ClipboardList, Server, LayoutDashboard } from "lucide-react";
+
+export function AdminShell({ children }: { children: React.ReactNode }) {
+  const pathname = usePathname();
+
+  return (
+    <SidebarProvider>
+      <div className="flex w-full min-h-screen bg-background text-foreground">
+        <Sidebar variant="sidebar" collapsible="icon">
+          <SidebarHeader className="border-b border-border py-4 px-4">
+            <span className="font-bold tracking-wider text-primary text-sm uppercase">
+              Admin
+            </span>
+          </SidebarHeader>
+
+          <SidebarContent>
+            <SidebarGroup>
+              <SidebarGroupLabel>Navigation</SidebarGroupLabel>
+              <SidebarGroupContent>
+                <SidebarMenu>
+                  <SidebarMenuItem>
+                    <SidebarMenuButton
+                      asChild
+                      isActive={pathname === "/admin"}
+                    >
+                      <Link href="/admin">
+                        <LayoutDashboard className="w-4 h-4" />
+                        <span>Dashboard</span>
+                      </Link>
+                    </SidebarMenuButton>
+                  </SidebarMenuItem>
+
+                  <SidebarMenuItem>
+                    <SidebarMenuButton
+                      asChild
+                      isActive={pathname === "/admin/form"}
+                    >
+                      <Link href="/admin/form">
+                        <ClipboardList className="w-4 h-4" />
+                        <span>Form</span>
+                      </Link>
+                    </SidebarMenuButton>
+                  </SidebarMenuItem>
+
+                  <SidebarMenuItem>
+                    <SidebarMenuButton
+                      asChild
+                      isActive={pathname.startsWith("/admin/backend")}
+                    >
+                      <Link href="/admin/backend">
+                        <Server className="w-4 h-4" />
+                        <span>Backend</span>
+                      </Link>
+                    </SidebarMenuButton>
+                  </SidebarMenuItem>
+                </SidebarMenu>
+              </SidebarGroupContent>
+            </SidebarGroup>
+          </SidebarContent>
+        </Sidebar>
+
+        <SidebarInset>
+          <div className="md:hidden p-2">
+            <SidebarTrigger />
+          </div>
+          {children}
+        </SidebarInset>
+      </div>
+    </SidebarProvider>
+  );
+}

components/delete-buttons.tsx

@@ -3,7 +3,7 @@
 import { useState } from "react";
 import { Button } from "@/components/ui/button";
 import { Trash2, Loader2 } from "lucide-react";
-import { deleteForm } from "@/app/actions/form";
+import { deleteForm } from "@/app/admin/form/actions";
 import { deleteSubmission, deleteAllSubmissions } from "@/app/actions/submissions";
 import { toast } from "sonner";
 import { useRouter } from "next/navigation";