import { headers } from "next/headers";
import { auth } from "@/lib/auth";
import { prisma } from "@/lib/prisma";
import { redirect } from "next/navigation";
import Link from "next/link";
import { LogoutButton } from "@/components/layout/logout-button";
import { getSetting } from "@/lib/settings";
import { StopImpersonateBanner } from "@/components/admin/stop-impersonate-banner";

export default async function StudentLayout({ children }: { children: React.ReactNode }) {
  const session = await auth.api.getSession({ headers: await headers() });
  if (!session) redirect("/login");

  const isImpersonating = !!(session.session as { impersonatedBy?: string }).impersonatedBy;

  // Force password change for auto-provisioned buyers (temp password).
  // Skip while an admin is impersonating — they only view the client's cabinet;
  // the client sets their own password on a real first login.
  const dbUser = await prisma.user.findUnique({
    where: { id: session.user.id },
    select: { mustChangePassword: true },
  });
  if (dbUser?.mustChangePassword && !isImpersonating) redirect("/change-password");

  // Maintenance mode: non-admin users see the maintenance page
  if (session.user.role !== "admin") {
    const maintenance = await getSetting("maintenanceMode");
    if (maintenance === "true") redirect("/maintenance");
  }

  const [schoolName, logoUrl, showLogo, socialYoutube, socialVk, socialTelegram, orgRequisites] =
    await Promise.all([
      getSetting("schoolName"),
      getSetting("logoUrl"),
      getSetting("showLogo"),
      getSetting("socialYoutube"),
      getSetting("socialVk"),
      getSetting("socialTelegram"),
      getSetting("orgRequisites"),
    ]);

  return (
    <div className="min-h-screen flex flex-col" style={{ backgroundColor: "var(--background)" }}>
      {isImpersonating && <StopImpersonateBanner userName={session.user.name} />}
      <header
        className="sticky top-0 z-10 flex items-center justify-between px-6 py-3"
        style={{ borderBottom: "2px solid var(--border)", backgroundColor: "var(--background)" }}
      >
        <Link href="/dashboard" className="flex items-center gap-2 font-bold tracking-wide" style={{ color: "var(--foreground)" }}>
          {logoUrl && showLogo === "true" && (
            // eslint-disable-next-line @next/next/no-img-element
            <img src={logoUrl} alt={schoolName} className="h-6 w-auto object-contain" />
          )}
          {schoolName}
        </Link>
        <div className="flex items-center gap-4">
          <Link href="/wrapped" className="text-sm hover:underline" style={{ color: "var(--muted-foreground)" }}>
            Wrapped
          </Link>
          {process.env.TOOLBOX_VISIBLE === "true" && (
            <Link href="/tools" className="text-sm hover:underline" style={{ color: "var(--muted-foreground)" }}>
              Инструменты
            </Link>
          )}
          <Link href="/questions" className="text-sm hover:underline" style={{ color: "var(--muted-foreground)" }}>
            Вопросы
          </Link>
          <Link href="/profile" className="text-sm hover:underline" style={{ color: "var(--muted-foreground)" }}>
            {session.user.name}
          </Link>
          <LogoutButton />
        </div>
      </header>
      <div className="flex-1 flex flex-col">{children}</div>
      {(socialYoutube || socialVk || socialTelegram || orgRequisites) && (
        <footer
          className="px-6 py-4 flex flex-col sm:flex-row items-center justify-between gap-3 text-xs"
          style={{ borderTop: "2px solid var(--border)", color: "var(--muted-foreground)" }}
        >
          {orgRequisites && (
            <p className="whitespace-pre-line text-center sm:text-left">{orgRequisites}</p>
          )}
          {(socialYoutube || socialVk || socialTelegram) && (
            <div className="flex items-center gap-4 flex-shrink-0">
              {socialYoutube && (
                <a href={socialYoutube} target="_blank" rel="noopener noreferrer" className="hover:underline">
                  YouTube
                </a>
              )}
              {socialVk && (
                <a href={socialVk} target="_blank" rel="noopener noreferrer" className="hover:underline">
                  VK
                </a>
              )}
              {socialTelegram && (
                <a href={socialTelegram} target="_blank" rel="noopener noreferrer" className="hover:underline">
                  Telegram
                </a>
              )}
            </div>
          )}
        </footer>
      )}
    </div>
  );
}