import Link from "next/link";
import { Badge } from "@/components/ui/badge";
import { tr } from "@/i18n/tr";
import { cn } from "@/lib/utils";
import { formatMoney } from "@/shared/format";
import { formatAssetQuantity } from "@/shared/assets";
import type { AssetsReport, ContactsReport } from "../extra";
import { dayLabel } from "./report-frame";

const signed = (n: number) => `${n > 0 ? "+" : n < 0 ? "−" : ""}${formatMoney(Math.abs(n))}`;
const bp = (n: number | null) =>
  n === null
    ? ""
    : ` (${n < 0 ? "−" : "+"}%${(Math.abs(n) / 100).toLocaleString("tr-TR", { maximumFractionDigits: 1 })})`;

function Stat({ label, value, tone }: { label: string; value: string; tone?: string }) {
  return (
    <div className="rounded-xl border bg-card p-3">
      <p className="text-xs text-muted-foreground">{label}</p>
      <p className={cn("text-lg font-semibold tabular-nums", tone)}>{value}</p>
    </div>
  );
}

export function ContactsReportView({ data }: { data: ContactsReport }) {
  const t = tr.reports.contacts;
  return (
    <div className="flex flex-col gap-6">
      <div className="grid grid-cols-2 gap-3 md:grid-cols-4">
        <Stat label={t.owesMe} value={formatMoney(data.totals.owesMeMinor)} tone="text-income" />
        <Stat label={t.iOwe} value={formatMoney(data.totals.iOweMinor)} tone="text-expense" />
        <Stat
          label={`${t.receivable} (${t.value.toLocaleLowerCase("tr-TR")})`}
          value={formatMoney(data.inKindTotals.receivableMinor)}
        />
        <Stat
          label={`${t.debt} (${t.value.toLocaleLowerCase("tr-TR")})`}
          value={formatMoney(data.inKindTotals.debtMinor)}
        />
      </div>

      <section aria-labelledby="cari-h" className="flex flex-col gap-2">
        <h2 id="cari-h" className="font-medium">
          {t.contact}
        </h2>
        {data.contacts.length ? (
          <div className="overflow-x-auto rounded-xl border bg-card">
            <table className="w-full min-w-[28rem] text-sm tabular-nums">
              <thead className="border-b text-xs text-muted-foreground">
                <tr>
                  <th className="px-3 py-2 text-left font-normal">{t.contact}</th>
                  <th className="px-3 py-2 text-left font-normal">{t.direction}</th>
                  <th className="px-3 py-2 text-right font-normal">{t.balance}</th>
                  <th className="px-3 py-2 text-right font-normal">{t.due}</th>
                </tr>
              </thead>
              <tbody className="divide-y">
                {data.contacts.map((c) => (
                  <tr key={c.id}>
                    <td className="px-3 py-1.5">
                      <Link href={`/cari/${c.id}`} className="hover:underline">
                        {c.name}
                      </Link>
                    </td>
                    <td className="px-3 py-1.5">{c.balanceMinor > 0 ? t.owesMe : t.iOwe}</td>
                    <td
                      className={cn(
                        "px-3 py-1.5 text-right font-medium",
                        c.balanceMinor > 0 ? "text-income" : "text-expense",
                      )}
                    >
                      {formatMoney(Math.abs(c.balanceMinor))}
                    </td>
                    <td className="px-3 py-1.5 text-right">
                      {c.dueDate ? dayLabel(c.dueDate) : "—"}
                      {t.dueStates[c.due] ? (
                        <Badge
                          variant="outline"
                          className={cn(
                            "ml-2",
                            c.due === "overdue" && "border-expense/50 text-expense",
                          )}
                        >
                          {t.dueStates[c.due]}
                        </Badge>
                      ) : null}
                    </td>
                  </tr>
                ))}
              </tbody>
            </table>
          </div>
        ) : (
          <p className="rounded-lg border border-dashed p-6 text-center text-sm text-muted-foreground">
            {t.noContacts}
          </p>
        )}
      </section>

      <section aria-labelledby="ayni-h" className="flex flex-col gap-2">
        <div>
          <h2 id="ayni-h" className="font-medium">
            {t.inKindTitle}
          </h2>
          <p className="text-xs text-muted-foreground">{t.inKindHint}</p>
        </div>
        {data.inKind.length ? (
          <div className="overflow-x-auto rounded-xl border bg-card">
            <table className="w-full min-w-[32rem] text-sm tabular-nums">
              <thead className="border-b text-xs text-muted-foreground">
                <tr>
                  <th className="px-3 py-2 text-left font-normal">{t.contact}</th>
                  <th className="px-3 py-2 text-left font-normal">{t.direction}</th>
                  <th className="px-3 py-2 text-right font-normal">{t.remaining}</th>
                  <th className="px-3 py-2 text-right font-normal">{t.value}</th>
                  <th className="px-3 py-2 text-right font-normal">{t.since}</th>
                </tr>
              </thead>
              <tbody className="divide-y">
                {data.inKind.map((d) => (
                  <tr key={d.id}>
                    <td className="px-3 py-1.5">
                      <Link href={`/cari/${d.contactId}`} className="hover:underline">
                        {d.contactName}
                      </Link>
                    </td>
                    <td className="px-3 py-1.5">
                      {d.direction === "receivable" ? t.receivable : t.debt}
                    </td>
                    <td className="px-3 py-1.5 text-right">{d.remainingLabel}</td>
                    <td className="px-3 py-1.5 text-right">
                      {d.valueMinor === null ? "—" : formatMoney(d.valueMinor)}
                    </td>
                    <td className="px-3 py-1.5 text-right">{dayLabel(d.date)}</td>
                  </tr>
                ))}
              </tbody>
            </table>
          </div>
        ) : (
          <p className="rounded-lg border border-dashed p-6 text-center text-sm text-muted-foreground">
            {t.noInKind}
          </p>
        )}
        {data.inKindTotals.unpriced ? (
          <p className="text-xs text-muted-foreground">{t.unpriced(data.inKindTotals.unpriced)}</p>
        ) : null}
      </section>
    </div>
  );
}

export function AssetsReportView({ data }: { data: AssetsReport }) {
  const t = tr.reports.assets;
  const p = data.period;
  const tone = (n: number | null) =>
    n === null ? "" : n < 0 ? "text-expense" : n > 0 ? "text-income" : "";
  return (
    <div className="flex flex-col gap-6">
      <section aria-labelledby="period-h" className="flex flex-col gap-2">
        <h2 id="period-h" className="font-medium">
          {t.periodTitle}: {dayLabel(p.from)} – {dayLabel(p.to)}
        </h2>
        <div className="grid grid-cols-2 gap-3 md:grid-cols-5">
          <Stat
            label={t.startValue}
            value={p.startValueMinor === null ? "—" : formatMoney(p.startValueMinor)}
          />
          <Stat label={t.invested} value={formatMoney(p.investedMinor)} />
          <Stat label={t.proceeds} value={formatMoney(p.proceedsMinor)} />
          <Stat
            label={t.endValue}
            value={p.endValueMinor === null ? "—" : formatMoney(p.endValueMinor)}
          />
          <Stat
            label={t.profit}
            value={p.profitMinor === null ? "—" : `${signed(p.profitMinor)}${bp(p.profitBp)}`}
            tone={tone(p.profitMinor)}
          />
        </div>
        {p.excluded ? (
          <p className="text-xs text-muted-foreground">{t.excluded(p.excluded)}</p>
        ) : null}
      </section>

      {data.items.length ? (
        <div className="overflow-x-auto rounded-xl border bg-card">
          <table className="w-full min-w-[40rem] text-sm tabular-nums">
            <thead className="border-b text-xs text-muted-foreground">
              <tr>
                <th className="px-3 py-2 text-left font-normal">{t.asset}</th>
                <th className="px-3 py-2 text-right font-normal">{t.quantity}</th>
                <th className="px-3 py-2 text-right font-normal">{t.cost}</th>
                <th className="px-3 py-2 text-right font-normal">{t.value}</th>
                <th className="px-3 py-2 text-right font-normal">{t.unrealized}</th>
                <th className="px-3 py-2 text-right font-normal">{t.realized}</th>
              </tr>
            </thead>
            <tbody className="divide-y">
              {data.items.map((a) => (
                <tr key={a.id}>
                  <td className="px-3 py-1.5">
                    <Link href={`/birikim/${a.id}`} className="hover:underline">
                      {a.name || a.label}
                    </Link>
                  </td>
                  <td className="px-3 py-1.5 text-right">
                    {formatAssetQuantity(a.assetKey, a.summary.quantity)}
                  </td>
                  <td className="px-3 py-1.5 text-right">{formatMoney(a.summary.costMinor)}</td>
                  <td className="px-3 py-1.5 text-right">
                    {a.summary.currentValueMinor === null
                      ? t.noPrice
                      : formatMoney(a.summary.currentValueMinor)}
                  </td>
                  <td className={cn("px-3 py-1.5 text-right", tone(a.summary.unrealizedMinor))}>
                    {a.summary.unrealizedMinor === null
                      ? "—"
                      : `${signed(a.summary.unrealizedMinor)}${bp(a.summary.unrealizedBp)}`}
                  </td>
                  <td className={cn("px-3 py-1.5 text-right", tone(a.summary.realizedMinor))}>
                    {signed(a.summary.realizedMinor)}
                  </td>
                </tr>
              ))}
            </tbody>
            <tfoot className="border-t font-medium">
              <tr>
                <td className="px-3 py-2">{t.total}</td>
                <td />
                <td className="px-3 py-2 text-right">{formatMoney(data.totals.costMinor)}</td>
                <td className="px-3 py-2 text-right">{formatMoney(data.totals.valueMinor)}</td>
                <td className={cn("px-3 py-2 text-right", tone(data.totals.unrealizedMinor))}>
                  {signed(data.totals.unrealizedMinor)}
                </td>
                <td className={cn("px-3 py-2 text-right", tone(data.totals.realizedMinor))}>
                  {signed(data.totals.realizedMinor)}
                </td>
              </tr>
            </tfoot>
          </table>
        </div>
      ) : (
        <p className="rounded-lg border border-dashed p-6 text-center text-sm text-muted-foreground">
          {t.empty}
        </p>
      )}
    </div>
  );
}