import { Suspense } from "react";
import { getServerSession } from "next-auth";
import { redirect } from "next/navigation";
import {
  Activity,
  Database,
  MessageCircle,
  Music2,
  RadioTower,
} from "lucide-react";
import { AdminShellServer } from "@/components/admin-shell-server";
import { Skeleton } from "@/components/ui/skeleton";
import {
  SidebarGroup,
  SidebarGroupContent,
  SidebarMenu,
  SidebarMenuButton,
  SidebarMenuItem,
} from "@/components/ui/sidebar";
import {
  Tooltip,
  TooltipContent,
  TooltipTrigger,
} from "@/components/ui/tooltip";
import { getAdminDiscordIds, getSessionDiscordId } from "@/lib/auth/auth";
import { authOptions } from "@/lib/auth/auth-options";
import { getAdminServiceHealth } from "@/lib/admin/service-health";
import { RobloxIcon, YoutubeIcon } from "@/lib/icons";
import { cn } from "@/lib/utils";

const iconByService = {
  database: Database,
  redis: RadioTower,
  youtube: YoutubeIcon,
  tiktok: Music2,
  discord: MessageCircle,
  roblox: RobloxIcon,
} as const;

async function AdminHealthStatus() {
  const snapshot = await getAdminServiceHealth();
  const unavailable = snapshot.services.filter(
    (service) => service.status === "unavailable",
  ).length;
  const summary = unavailable
    ? `${unavailable} ${unavailable === 1 ? "service" : "services"} unavailable`
    : "All systems operational";

  return (
    <SidebarGroup className="pb-0">
      <SidebarGroupContent>
        <SidebarMenu>
          <SidebarMenuItem>
            <SidebarMenuButton size="lg" tooltip={summary} aria-label={summary}>
              <Activity
                className={cn(
                  "hidden group-data-[collapsible=icon]:block",
                  unavailable ? "text-destructive" : "text-emerald-500",
                )}
              />
              <div className="flex min-w-0 flex-1 items-center justify-between gap-2 group-data-[collapsible=icon]:hidden">
                <div className="flex flex-col gap-1">
                  {(["core", "integration"] as const).map((category) => (
                    <div key={category} className="flex items-center gap-1">
                      {snapshot.services
                        .filter((service) => service.category === category)
                        .map((service) => {
                          const Icon =
                            iconByService[
                              service.id as keyof typeof iconByService
                            ];
                          return (
                            <Tooltip key={service.id}>
                              <TooltipTrigger asChild>
                                <span
                                  className={cn(
                                    "flex [&>svg]:shrink-0",
                                    category === "core"
                                      ? "[&>svg]:size-5"
                                      : "[&>svg]:size-4",
                                    service.status === "operational"
                                      ? "text-emerald-500"
                                      : "text-destructive",
                                  )}
                                  aria-label={`${service.label}: ${service.status}`}
                                >
                                  <Icon />
                                </span>
                              </TooltipTrigger>
                              <TooltipContent side="bottom">
                                {service.label}: {service.status}
                              </TooltipContent>
                            </Tooltip>
                          );
                        })}
                    </div>
                  ))}
                </div>
                <span className="truncate text-xs">{summary}</span>
              </div>
            </SidebarMenuButton>
          </SidebarMenuItem>
        </SidebarMenu>
      </SidebarGroupContent>
    </SidebarGroup>
  );
}

function AdminHealthStatusSkeleton() {
  return (
    <SidebarGroup className="pb-0">
      <SidebarGroupContent>
        <SidebarMenu>
          <SidebarMenuItem className="flex h-12 items-center gap-2 px-2">
            <Skeleton className="size-4" />
            <Skeleton className="h-3 flex-1" />
          </SidebarMenuItem>
        </SidebarMenu>
      </SidebarGroupContent>
    </SidebarGroup>
  );
}

export default async function AdminLayout({
  children,
}: {
  children: React.ReactNode;
}) {
  const session = await getServerSession(authOptions);
  const discordId = getSessionDiscordId(session);

  if (!discordId || !getAdminDiscordIds().includes(discordId)) {
    redirect("/");
  }

  return (
    <AdminShellServer
      healthStatus={
        <Suspense fallback={<AdminHealthStatusSkeleton />}>
          <AdminHealthStatus />
        </Suspense>
      }
    >
      {children}
    </AdminShellServer>
  );
}