"use client";

import { useState } from "react";
import { useRouter } from "next/navigation";
import { markPayoutPaidAction } from "@/features/payout/actions";
import { formatRupiah } from "@/lib/utils";

type PayoutStatus = "HELD" | "RELEASED" | "PAID" | "CANCELLED";

export type PayoutCardData = {
  id: string;
  amount: number;
  currency: string;
  status: PayoutStatus;
  heldUntil: Date;
  releasedAt: Date | null;
  paidAt: Date | null;
  cancelledAt: Date | null;
  bankName: string | null;
  bankAccountNumber: string | null;
  bankAccountName: string | null;
  adminNote: string | null;
  createdAt: Date;
  trip: { id: string; title: string; date: Date; endDate: Date | null; status: string };
  organizer: { id: string; name: string; email: string };
  booking: {
    id: string;
    amount: number;
    status: string;
    user: { id: string; name: string; email: string };
  };
  processedBy: { id: string; name: string; email: string } | null;
};

function formatDate(d: Date | null | string): string {
  if (!d) return "—";
  return new Date(d).toLocaleString("id-ID", {
    day: "2-digit",
    month: "short",
    year: "numeric",
    hour: "2-digit",
    minute: "2-digit",
  });
}

function formatDay(d: Date | null | string): string {
  if (!d) return "—";
  return new Date(d).toLocaleDateString("id-ID", {
    day: "2-digit",
    month: "short",
    year: "numeric",
  });
}

export function PayoutReviewCard({ payout }: { payout: PayoutCardData }) {
  const router = useRouter();
  const [open, setOpen] = useState(false);
  const [note, setNote] = useState("");
  const [error, setError] = useState("");
  const [loading, setLoading] = useState(false);

  async function submit() {
    setError("");
    setLoading(true);
    const fd = new FormData();
    fd.set("payoutId", payout.id);
    fd.set("adminNote", note);
    const result = await markPayoutPaidAction(fd);
    setLoading(false);
    if (result.error) {
      setError(result.error);
      return;
    }
    setOpen(false);
    setNote("");
    router.refresh();
  }

  const bankAvailable =
    payout.bankName && payout.bankAccountNumber && payout.bankAccountName;

  return (
    <article className="rounded-2xl border border-neutral-200 bg-white p-5 shadow-sm sm:p-6">
      <header className="flex flex-wrap items-start justify-between gap-3 border-b border-neutral-100 pb-4">
        <div className="min-w-0">
          <h3 className="truncate text-base font-bold text-neutral-900">
            {payout.trip.title}
          </h3>
          <p className="mt-0.5 text-xs text-neutral-500">
            Booking {payout.booking.user.name} · trip{" "}
            {formatDay(payout.trip.date)}
            {" · "}
            <span className="font-mono">{payout.id.slice(0, 8)}…</span>
          </p>
        </div>
        <StatusPill status={payout.status} />
      </header>

      <div className="mt-4 grid gap-4 sm:grid-cols-2">
        <Field
          label="Organizer"
          value={`${payout.organizer.name} · ${payout.organizer.email}`}
        />
        <Field
          label="Nominal payout"
          value={`${formatRupiah(payout.amount)} ${payout.currency !== "IDR" ? `(${payout.currency})` : ""}`}
          highlight
        />
        <Field label="Booking" value={`${formatRupiah(payout.booking.amount)} · ${payout.booking.status}`} />
        <Field
          label="Hold sampai"
          value={formatDay(payout.heldUntil)}
        />
        {payout.releasedAt && (
          <Field label="Direlease" value={formatDate(payout.releasedAt)} />
        )}
        {payout.paidAt && (
          <Field label="Dibayar" value={formatDate(payout.paidAt)} />
        )}
        {payout.cancelledAt && (
          <Field label="Dibatalkan" value={formatDate(payout.cancelledAt)} />
        )}
      </div>

      <div className="mt-4 rounded-xl bg-neutral-50 p-3 text-sm">
        <p className="mb-1 text-xs font-semibold uppercase tracking-wide text-neutral-500">
          Rekening tujuan transfer
        </p>
        {bankAvailable ? (
          <div className="space-y-0.5 text-neutral-800">
            <p className="font-semibold">{payout.bankName}</p>
            <p className="font-mono text-sm">{payout.bankAccountNumber}</p>
            <p className="text-xs text-neutral-600">
              a/n {payout.bankAccountName}
            </p>
          </div>
        ) : (
          <p className="text-amber-700">
            ⚠️ Organizer belum menyelesaikan verifikasi (KYC) — tidak ada rekening
            snapshot. Hubungi organizer untuk konfirmasi rekening sebelum transfer.
          </p>
        )}
      </div>

      {payout.adminNote && (
        <div className="mt-3 rounded-xl bg-blue-50 p-3 text-sm text-blue-800">
          <p className="mb-1 text-xs font-semibold uppercase tracking-wide text-blue-600">
            Catatan admin
          </p>
          <p className="whitespace-pre-wrap">{payout.adminNote}</p>
        </div>
      )}

      {payout.processedBy && (
        <p className="mt-3 text-xs text-neutral-500">
          Diproses oleh {payout.processedBy.name}
          {payout.paidAt && ` · transfer ${formatDate(payout.paidAt)}`}
        </p>
      )}

      {payout.status === "RELEASED" && (
        <div className="mt-5 border-t border-neutral-100 pt-4">
          {error && (
            <div className="mb-3 rounded-lg bg-red-50 px-3 py-2 text-xs text-red-600">
              {error}
            </div>
          )}
          {open ? (
            <div className="space-y-2">
              <p className="text-xs font-semibold uppercase tracking-wide text-neutral-600">
                Tandai Sudah Transfer
              </p>
              <textarea
                value={note}
                onChange={(e) => setNote(e.target.value)}
                rows={2}
                placeholder="Referensi transfer / nomor mutasi bank (wajib)"
                className="w-full rounded-xl border border-neutral-200 bg-neutral-50 px-3 py-2 text-sm focus:bg-white"
              />
              <div className="flex gap-2">
                <button
                  type="button"
                  onClick={submit}
                  disabled={loading || note.trim().length < 3}
                  className="rounded-xl bg-primary-600 px-4 py-2 text-sm font-bold text-white hover:bg-primary-700 disabled:opacity-50"
                >
                  {loading ? "Memproses…" : "Tandai PAID"}
                </button>
                <button
                  type="button"
                  onClick={() => {
                    setOpen(false);
                    setNote("");
                    setError("");
                  }}
                  disabled={loading}
                  className="rounded-xl border border-neutral-200 bg-white px-4 py-2 text-sm font-medium text-neutral-600 hover:bg-neutral-50 disabled:opacity-50"
                >
                  Batal
                </button>
              </div>
            </div>
          ) : (
            <button
              type="button"
              onClick={() => setOpen(true)}
              disabled={loading}
              className="rounded-xl bg-primary-600 px-4 py-2 text-sm font-bold text-white hover:bg-primary-700 disabled:opacity-50"
            >
              💸 Tandai sudah ditransfer ke organizer
            </button>
          )}
        </div>
      )}
    </article>
  );
}

function Field({
  label,
  value,
  highlight,
}: {
  label: string;
  value: string;
  highlight?: boolean;
}) {
  return (
    <div>
      <p className="text-xs font-semibold uppercase tracking-wide text-neutral-500">
        {label}
      </p>
      <p
        className={`mt-0.5 text-sm ${
          highlight ? "font-bold text-primary-700" : "text-neutral-800"
        }`}
      >
        {value}
      </p>
    </div>
  );
}

function StatusPill({ status }: { status: PayoutStatus }) {
  const cfg: Record<PayoutStatus, { label: string; cls: string }> = {
    HELD: {
      label: "Ditahan (escrow)",
      cls: "bg-amber-50 text-amber-700 ring-amber-200",
    },
    RELEASED: {
      label: "Siap transfer",
      cls: "bg-blue-50 text-blue-700 ring-blue-200",
    },
    PAID: {
      label: "Selesai",
      cls: "bg-primary-50 text-primary-700 ring-primary-200",
    },
    CANCELLED: {
      label: "Dibatalkan",
      cls: "bg-neutral-100 text-neutral-600 ring-neutral-200",
    },
  };
  const c = cfg[status];
  return (
    <span
      className={`inline-flex items-center rounded-full px-2.5 py-0.5 text-xs font-semibold ring-1 ${c.cls}`}
    >
      {c.label}
    </span>
  );
}