import {
  BookOpenCheck,
  ChartPie,
  ChevronRight,
  Coins,
  HandCoins,
  ShoppingCart,
  Tags,
  Target,
  Trash2,
  TrendingUp,
  Users,
} from "lucide-react";
import type { Metadata } from "next";
import Link from "next/link";
import { notFound } from "next/navigation";
import { PageHeader } from "@/components/page-header";
import { monthLabel, formatPct } from "@/features/reports/components/report-frame";
import { getCategoryReport, getTrendReport } from "@/features/reports/service";
import { tr } from "@/i18n/tr";
import { requireActiveHousehold } from "@/lib/dal";
import { cn } from "@/lib/utils";
import { formatMoney } from "@/shared/format";

const t = tr.reports;
export const metadata: Metadata = { title: t.title };

const REPORTS = [
  { href: "/raporlar/kakeibo", key: "kakeibo", icon: BookOpenCheck },
  { href: "/raporlar/kategoriler", key: "categories", icon: ChartPie },
  { href: "/raporlar/trend", key: "trend", icon: TrendingUp },
  { href: "/raporlar/kisi-hesap", key: "people", icon: Users },
  { href: "/raporlar/butce", key: "budget", icon: Target },
  { href: "/raporlar/cari", key: "contacts", icon: HandCoins },
  { href: "/raporlar/birikim", key: "assets", icon: Coins },
  { href: "/raporlar/alisveris", key: "shopping", icon: ShoppingCart },
  { href: "/raporlar/birim-fiyat", key: "unitPrice", icon: Tags },
  { href: "/raporlar/fire", key: "waste", icon: Trash2 },
] as const;

/** /raporlar — bu bütçe ayının özeti ve raporlar. */
export default async function ReportsPage() {
  const { user, household } = await requireActiveHousehold("viewer");
  const [trend, cats] = await Promise.all([
    getTrendReport(user.id, household.id, 1),
    getCategoryReport(user.id, household.id),
  ]);
  if (!trend || !cats) notFound();
  const m = trend.months[0]!;
  const top = cats.breakdown.rows.filter((r) => r.amountMinor > 0).slice(0, 3);
  const stats = [
    { label: t.hub.income, value: formatMoney(m.incomeMinor), tone: "text-income" },
    { label: t.hub.expense, value: formatMoney(m.expenseMinor), tone: "text-expense" },
    {
      label: t.hub.net,
      value: `${m.netMinor < 0 ? "−" : ""}${formatMoney(Math.abs(m.netMinor))}`,
      tone: m.netMinor < 0 ? "text-expense" : undefined,
    },
    { label: t.hub.savings, value: formatPct(m.savingsPct) },
  ];
  return (
    <>
      <PageHeader title={t.title} description={t.description} />
      <section aria-labelledby="hub-month" className="rounded-xl border bg-card p-4">
        <h2 id="hub-month" className="text-sm font-medium">
          {t.hub.thisMonth}: <span className="capitalize">{monthLabel(m.month)}</span>{" "}
          <span className="font-normal text-muted-foreground">({t.trend.ongoing})</span>
        </h2>
        <dl className="mt-3 grid grid-cols-2 gap-3 md:grid-cols-4">
          {stats.map((s) => (
            <div key={s.label}>
              <dt className="text-xs text-muted-foreground">{s.label}</dt>
              <dd className={cn("text-lg font-semibold tabular-nums", s.tone)}>{s.value}</dd>
            </div>
          ))}
        </dl>
        {top.length ? (
          <div className="mt-4">
            <h3 className="text-xs text-muted-foreground">{t.hub.topCategories}</h3>
            <ul className="mt-1 flex flex-col gap-1 text-sm">
              {top.map((r) => (
                <li key={r.id} className="flex justify-between gap-3">
                  <span className="truncate">{r.name}</span>
                  <span className="tabular-nums">
                    {formatMoney(r.amountMinor)}{" "}
                    <span className="text-muted-foreground">· {formatPct(r.sharePct)}</span>
                  </span>
                </li>
              ))}
            </ul>
          </div>
        ) : null}
      </section>
      <ul className="grid gap-3 md:grid-cols-2">
        {REPORTS.map((r) => {
          const c = t.hub.cards[r.key];
          const Icon = r.icon;
          return (
            <li key={r.href}>
              <Link
                href={r.href}
                className="flex h-full items-start gap-3 rounded-xl border bg-card p-4 transition-colors hover:bg-accent/40 focus-visible:ring-2 focus-visible:ring-ring focus-visible:outline-none"
              >
                <span className="flex size-9 shrink-0 items-center justify-center rounded-lg bg-muted">
                  <Icon className="size-4.5 text-muted-foreground" aria-hidden />
                </span>
                <span className="min-w-0 flex-1">
                  <span className="block font-medium">{c.title}</span>
                  <span className="block text-sm text-muted-foreground">{c.description}</span>
                </span>
                <ChevronRight className="mt-2 size-4 text-muted-foreground" aria-hidden />
              </Link>
            </li>
          );
        })}
      </ul>
    </>
  );
}