import type { Metadata } from "next";
import Link from "next/link";
import { ActionForm, SubmitButton } from "@/components/forms";
import { OnlineList } from "@/components/online-list";
import { PageHeader } from "@/components/status";
import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
import { NativeSelect, NativeSelectOption } from "@/components/ui/native-select";
import { api, unwrap } from "@/lib/api";
import { setRegistration } from "./actions";
import { AuditTable } from "./audit-table";
import { ConsoleNav, requireConsole } from "./console-nav";

export const metadata: Metadata = { title: "Console" };

type Stat = { label: string; value: number; note: string; href?: string };

export default async function Console() {
  const { me, console: data } = await requireConsole("/console");
  const settings = me.role === "admin" ? await api.console.settings.get().then(unwrap) : undefined;

  const todo: Stat[] = [
    { label: "Drafts", value: data.todo.drafts, note: "to review and publish", href: "/console/products?status=draft" },
    { label: "Member Requests", value: data.todo.memberRequests, note: "waiting in your catalogs", href: "/console/catalogs" },
  ];
  if (data.moderation) {
    todo.push(
      { label: "Catalogs", value: data.todo.pendingCatalogs, note: "waiting for approval", href: "/console/catalogs" },
      { label: "Accounts", value: data.todo.waitingPeople, note: "waiting for approval", href: "/console/people?waiting=true" },
    );
  }
  const mine: Stat[] = [
    { label: "Your Products", value: data.mine.products, note: "you created", href: "/console/products" },
    { label: "Your Catalogs", value: data.mine.catalogs, note: "you're on the team of", href: "/console/catalogs" },
    { label: "Your Rooms", value: data.mine.rooms, note: "you host", href: "/rooms" },
  ];
  const hub: Stat[] = data.moderation
    ? [
        { label: "People", value: data.moderation.counts.people, note: "accounts" },
        { label: "IMVU Accounts", value: data.moderation.counts.links, note: "linked" },
        { label: "Computers", value: data.moderation.counts.computers, note: "signed in" },
      ]
    : [];

  return (
    <>
      <PageHeader title="Console">What you manage on T5DE.</PageHeader>
      <ConsoleNav />
      <div className="space-y-6">
        <StatGrid stats={todo.filter((s) => s.value > 0 || data.moderation)} />
        <StatGrid stats={mine.filter((s) => s.value > 0)} />
        {hub.length > 0 && <StatGrid stats={hub} />}

        {data.moderation && (
          <Card>
            <CardHeader>
              <CardTitle>Online Now</CardTitle>
              <CardDescription>
                {data.moderation.connections} {data.moderation.connections === 1 ? "connection" : "connections"} when
                the page loaded
              </CardDescription>
            </CardHeader>
            <CardContent>
              <OnlineList initial={data.moderation.online} moderator />
            </CardContent>
          </Card>
        )}

        {settings && (
          <Card id="settings">
            <CardHeader>
              <CardTitle>Registration</CardTitle>
              <CardDescription>
                {settings.registration === "closed"
                  ? "Closed: new accounts can sign in, but wait for a moderator's approval."
                  : "Open: new accounts can use the hub at once."}
              </CardDescription>
            </CardHeader>
            <CardContent>
              <ActionForm action={setRegistration}>
                <div className="flex gap-2">
                  <NativeSelect name="registration" defaultValue={settings.registration} aria-label="Registration">
                    <NativeSelectOption value="open">Open</NativeSelectOption>
                    <NativeSelectOption value="closed">Closed</NativeSelectOption>
                  </NativeSelect>
                  <SubmitButton pendingLabel="Setting…">Set</SubmitButton>
                </div>
              </ActionForm>
            </CardContent>
          </Card>
        )}

        <Card>
          <CardHeader>
            <CardTitle>Recent Changes</CardTitle>
            <CardDescription>
              {data.moderation ? "Across the hub." : "To what you manage, and by you."}{" "}
              <Link href="/console/audit" className="underline-offset-4 hover:underline">
                Full audit log
              </Link>
            </CardDescription>
          </CardHeader>
          <CardContent>
            <AuditTable entries={data.audit} />
          </CardContent>
        </Card>
      </div>
    </>
  );
}

function StatGrid({ stats }: { stats: Stat[] }) {
  if (stats.length === 0) return null;
  return (
    <div className="grid gap-4 sm:grid-cols-2 lg:grid-cols-4">
      {stats.map((s) => (
        <Card key={s.label}>
          <CardHeader>
            <CardDescription>{s.label}</CardDescription>
            <CardTitle className="text-3xl font-semibold tabular-nums">{s.value}</CardTitle>
          </CardHeader>
          <CardContent className="text-sm text-muted-foreground">
            {s.href ? (
              <Link href={s.href} className="underline-offset-4 hover:underline">
                {s.note}
              </Link>
            ) : (
              s.note
            )}
          </CardContent>
        </Card>
      ))}
    </div>
  );
}