import { useState } from "react";
import {
  useLedgerJournal,
  type LedgerEntryRow,
} from "~/requestHandler/use-admin-hooks";
import {
  AdminTable,
  AdminPagination,
  AdminToolbar,
  AdminSearch,
  AdminSelect,
  StatusBadge,
  faToman,
  faDate,
  useDebouncedValue,
  type Column,
} from "~/components/admin/DataTable";

const PAGE_SIZE = 25;

// Journal entry_type → Persian label + tone.
const ENTRY: Record<string, { label: string; tone: "green" | "blue" | "red" }> = {
  deposit: { label: "واریز", tone: "green" },
  purchase: { label: "خرید", tone: "blue" },
  seller_credit: { label: "اعتبار فروشنده", tone: "green" },
  platform_fee: { label: "کارمزد پلتفرم", tone: "blue" },
  refund: { label: "بازپرداخت", tone: "red" },
  seller_reversal: { label: "برگشت فروشنده", tone: "red" },
  payout: { label: "تسویه", tone: "red" },
};

const ACCOUNT: Record<string, string> = {
  user_wallet: "کیف پول کاربر",
  seller_balance: "موجودی فروشنده",
  platform: "پلتفرم",
  external: "خارجی",
};

export default function LedgerJournal() {
  const [page, setPage] = useState(1);
  const [search, setSearch] = useState("");
  const [account, setAccount] = useState("");
  const [entryType, setEntryType] = useState("");
  const debouncedSearch = useDebouncedValue(search);

  const { data, isLoading } = useLedgerJournal({
    page,
    page_size: PAGE_SIZE,
    search: debouncedSearch,
    account,
    entry_type: entryType,
  });

  const reset = (fn: () => void) => {
    fn();
    setPage(1);
  };

  const columns: Column<LedgerEntryRow>[] = [
    {
      header: "نوع",
      render: (e) => {
        const t = ENTRY[e.entryType] || { label: e.entryType, tone: "blue" as const };
        return <StatusBadge label={t.label} tone={t.tone} />;
      },
    },
    {
      header: "حساب",
      render: (e) => (
        <span className="text-GRAY text-[12px] whitespace-nowrap">
          {ACCOUNT[e.account] || e.account}
        </span>
      ),
    },
    {
      header: "مبلغ",
      render: (e) => (
        <span
          className={cnDelta(e.delta)}
          dir="ltr"
        >
          {e.delta >= 0 ? "+" : "−"}
          {faToman(Math.abs(e.delta))}
        </span>
      ),
    },
    {
      header: "طرف",
      render: (e) => (
        <span className="text-GRAY text-[11px] tabular-nums" dir="ltr">
          {e.sellerName || e.userPhone || "—"}
        </span>
      ),
    },
    {
      header: "سفارش",
      render: (e) => (
        <span className="text-GRAY tabular-nums">{e.order ? e.order.slice(0, 8) : "—"}</span>
      ),
    },
    {
      header: "تاریخ",
      render: (e) => <span className="text-GRAY whitespace-nowrap">{faDate(e.createdAt)}</span>,
    },
  ];

  return (
    <div>
      <AdminToolbar>
        <AdminSearch
          value={search}
          onChange={(v) => reset(() => setSearch(v))}
          placeholder="جستجوی فروشگاه / تلفن / توضیح…"
        />
        <AdminSelect
          value={account}
          onChange={(v) => reset(() => setAccount(v))}
          options={[
            { value: "", label: "همه حساب‌ها" },
            { value: "user_wallet", label: "کیف پول کاربر" },
            { value: "seller_balance", label: "موجودی فروشنده" },
            { value: "platform", label: "پلتفرم" },
            { value: "external", label: "خارجی" },
          ]}
        />
        <AdminSelect
          value={entryType}
          onChange={(v) => reset(() => setEntryType(v))}
          options={[
            { value: "", label: "همه انواع" },
            { value: "deposit", label: "واریز" },
            { value: "purchase", label: "خرید" },
            { value: "seller_credit", label: "اعتبار فروشنده" },
            { value: "platform_fee", label: "کارمزد پلتفرم" },
            { value: "refund", label: "بازپرداخت" },
            { value: "seller_reversal", label: "برگشت فروشنده" },
            { value: "payout", label: "تسویه" },
          ]}
        />
      </AdminToolbar>
      <AdminTable
        columns={columns}
        rows={data?.results || []}
        isLoading={isLoading}
        getRowKey={(e) => e.id}
      />
      <AdminPagination page={page} pageSize={PAGE_SIZE} count={data?.count || 0} onPageChange={setPage} />
    </div>
  );
}

function cnDelta(delta: number) {
  return `tabular-nums whitespace-nowrap font-semibold ${
    delta >= 0 ? "text-GREEN" : "text-RED"
  }`;
}