"use client";

import { useCallback, useEffect, useState } from "react";
import { useSearchParams } from "next/navigation";
import { useTranslation } from "react-i18next";

import { getDrawResultByNo } from "@/api/draw";
import { getTicketDrawMyMatch } from "@/api/ticket-items";
import Link from "next/link";
import { Button, buttonVariants } from "@/components/ui/button";
import { PlayerPanel } from "@/components/layout/player-panel";
import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card";
import { Skeleton } from "@/components/ui/skeleton";
import { DrawWinningCheckPanel } from "@/features/results/draw-winning-check-panel";
import { JackpotResultsStrip } from "@/features/results/jackpot-results-strip";
import { TwentyThreeResultsGrid } from "@/features/results/twenty-three-results-grid";
import { useCurrencyCatalog } from "@/hooks/use-currency-catalog";
import { getPlayerBearerTokenPayload } from "@/lib/lottery-auth";
import { formatPlayerInstant } from "@/lib/player-datetime";
import { formatMinorAsCurrency } from "@/lib/money";
import { isCreditFundingPlayer } from "@/lib/player-funding-mode";
import { norm4d } from "@/lib/norm-4d";
import { useActivePlayerCurrency } from "@/hooks/use-active-player-currency";
import { resultsPrizeLabelKey, RESULTS_TOP_PRIZE_KEYS } from "@/lib/results-prize-labels";
import { cn } from "@/lib/utils";
import { usePlayerSessionStore } from "@/stores/player-session-store";
import type { DrawResultDetailPayload } from "@/types/api/draw-results";

type DrawResultDetailScreenProps = {
  drawNo: string;
};

/** §4.6 开奖结果详情：23 分区 + [< >] 切换 + 本人命中高亮 + Jackpot */
export function DrawResultDetailScreen({ drawNo }: DrawResultDetailScreenProps) {
  const { t } = useTranslation("player");
  const searchParams = useSearchParams();
  const checkOpen = searchParams.get("check") === "1";
  const { activeCurrency } = useActivePlayerCurrency();
  const creditMode = isCreditFundingPlayer(usePlayerSessionStore((state) => state.profile));
  useCurrencyCatalog();
  const [data, setData] = useState<DrawResultDetailPayload | null>(null);
  const [error, setError] = useState<string | null>(null);
  const [loading, setLoading] = useState(true);
  const [activeProviderCode, setActiveProviderCode] = useState<string>("");
  const [highlightSet, setHighlightSet] = useState<ReadonlySet<string> | null>(null);
  const [myTotals, setMyTotals] = useState<{
    win: number;
    jackpot: number;
    hasBets: boolean;
  } | null>(null);

  const load = useCallback(async () => {
    setLoading(true);
    setError(null);
    try {
      const row = await getDrawResultByNo(drawNo, { currency: activeCurrency });
      setData(row);
      setActiveProviderCode(String(row.provider_code ?? row.provider_results?.[0]?.provider_code ?? ""));
    } catch {
      setData(null);
      setError(t("results.unavailable"));
    } finally {
      setLoading(false);
    }
  }, [activeCurrency, drawNo, t]);

  useEffect(() => {
    queueMicrotask(() => {
      void load();
    });
  }, [load]);

  useEffect(() => {
    let cancelled = false;
    queueMicrotask(() => {
      if (!data) {
        setHighlightSet(null);
        setMyTotals(null);
        return;
      }
      const token = getPlayerBearerTokenPayload();
      if (!token) {
        setHighlightSet(new Set());
        setMyTotals(null);
        return;
      }
      void (async () => {
        try {
          const m = await getTicketDrawMyMatch(data.draw_no);
          if (cancelled) return;
          setHighlightSet(new Set(m.hit_numbers_4d.map((n) => norm4d(n))));
          setMyTotals({
            win: m.total_win_minor,
            jackpot: m.total_jackpot_win_minor,
            hasBets: m.has_bets,
          });
        } catch {
          if (!cancelled) {
            setHighlightSet(new Set());
            setMyTotals(null);
          }
        }
      })();
    });
    return () => {
      cancelled = true;
    };
  }, [data]);

  if (loading) {
    return (
      <PlayerPanel
        title={t("results.detailTitle")}
        backHref="/results"
        backLabel={t("results.title")}
      >
        <div className="space-y-3">
          <Skeleton className="h-12 rounded-xl" />
          <Skeleton className="h-56 rounded-xl" />
        </div>
      </PlayerPanel>
    );
  }

  if (error || !data) {
    return (
      <PlayerPanel
        title={t("results.detailTitle")}
        backHref="/results"
        backLabel={t("results.title")}
      >
        <div className="rounded-xl border border-red-200 bg-red-50 px-3 py-3 text-sm text-red-700">
          <p>{error ?? t("results.noData")}</p>
          <Button type="button" size="sm" variant="secondary" onClick={() => void load()}>
            {t("actions.retry")}
          </Button>
        </div>
      </PlayerPanel>
    );
  }

  const currency = data.jackpot?.currency_code ?? activeCurrency;
  const providerResults = data.provider_results ?? [];
  const activeProviderResult =
    providerResults.find((row) => String(row.provider_code ?? "") === activeProviderCode)
    ?? providerResults[0]
    ?? null;
  const activeResults = activeProviderResult?.results ?? data.results;
  const showMyPayout =
    myTotals &&
    myTotals.hasBets &&
    (myTotals.win > 0 || myTotals.jackpot > 0);
  const showHitOnly =
    myTotals?.hasBets &&
    highlightSet &&
    highlightSet.size > 0 &&
    myTotals &&
    myTotals.win === 0 &&
    myTotals.jackpot === 0;

  return (
    <PlayerPanel
      title={t("results.detailTitle")}
      backHref="/results"
      backLabel={t("results.title")}
    >
      <div className="flex flex-col gap-3">
        <JackpotResultsStrip currencyCode={currency} />

        <Card className="overflow-hidden border-[#e5edf8] bg-white shadow-[0_10px_28px_rgba(15,23,42,0.06)]">
          <CardHeader className="space-y-3 border-b border-[#edf2f9] bg-[#f8fbff] pb-3">
            <div className="flex flex-wrap items-center justify-between gap-2">
              {data.previous_draw_no ? (
                <Link
                  href={`/results/${encodeURIComponent(data.previous_draw_no)}`}
                  prefetch={false}
                  className={cn(
                    buttonVariants({ variant: "outline", size: "sm" }),
                    "min-w-[5rem] rounded-full border-[#dce7f7] bg-white text-[#0b56b7] hover:bg-[#f1f6ff]",
                  )}
                >
                  {t("results.previous")}
                </Link>
              ) : (
                <Button type="button" variant="outline" size="sm" className="min-w-[5rem] rounded-full border-[#e6edf8] bg-white text-slate-400" disabled>
                  {t("results.previous")}
                </Button>
              )}
              <div className="flex min-w-0 flex-1 flex-col items-center text-center">
                <CardTitle className="truncate font-mono text-lg font-black text-[#0b3f96]">
                  {data.draw_no}
                </CardTitle>
                <CardDescription className="mt-1 font-mono text-xs text-slate-500">
                  {t("results.drawTime", {
                    time: formatPlayerInstant(data.draw_time_iso ?? data.draw_time ?? null),
                  })}
                </CardDescription>
              </div>
              {data.next_draw_no ? (
                <Link
                  href={`/results/${encodeURIComponent(data.next_draw_no)}`}
                  prefetch={false}
                  className={cn(
                    buttonVariants({ variant: "outline", size: "sm" }),
                    "min-w-[5rem] rounded-full border-[#dce7f7] bg-white text-[#0b56b7] hover:bg-[#f1f6ff]",
                  )}
                >
                  {t("results.next")}
                </Link>
              ) : (
                <Button type="button" variant="outline" size="sm" className="min-w-[5rem] rounded-full border-[#e6edf8] bg-white text-slate-400" disabled>
                  {t("results.next")}
                </Button>
              )}
            </div>
          </CardHeader>
          <CardContent className="space-y-3 pt-3">
            <div className="rounded-xl border border-[#e8eef7] bg-[#f8fbff] p-3 shadow-[0_4px_14px_rgba(15,23,42,0.04)]">
              <div className="flex items-center justify-between gap-2">
                <p className="text-sm font-black text-[#0b3f96]">
                  {t("results.detailTitle")}
                </p>
                <span className="rounded-full bg-[#f2f6ff] px-2.5 py-1 text-xs font-bold text-[#0b56b7]">
                  {t("results.detail")}
                </span>
              </div>
              {providerResults.length > 1 ? (
                <div className="mt-3 flex flex-wrap gap-2">
                  {providerResults.map((row) => {
                    const code = String(row.provider_code ?? "");
                    const active = code === String(activeProviderResult?.provider_code ?? "");
                    return (
                      <button
                        key={code || row.provider_name || row.result_version}
                        type="button"
                        onClick={() => setActiveProviderCode(code)}
                        className={cn(
                          "rounded-full border px-3 py-1 text-xs font-bold transition-colors",
                          active
                            ? "border-[#0b56b7] bg-[#0b56b7] text-white"
                            : "border-[#dce7f7] bg-white text-[#0b56b7] hover:bg-[#f1f6ff]",
                        )}
                      >
                        {row.provider_name || row.provider_code || "Provider"}
                      </button>
                    );
                  })}
                </div>
              ) : null}
              <div className="mt-3 grid grid-cols-3 gap-2 text-center">
                {RESULTS_TOP_PRIZE_KEYS.map((tier) => (
                  <div
                    key={tier}
                    className="rounded-lg border border-[#edf2f8] bg-white py-2 shadow-[0_4px_12px_rgba(15,23,42,0.03)]"
                  >
                    <p className="text-[11px] font-bold text-[#7890b8]">
                      {t(resultsPrizeLabelKey(tier))}
                    </p>
                    <p className="mt-1 font-mono text-lg font-black tabular-nums text-[#e5002c]">
                      {activeResults[tier]}
                    </p>
                  </div>
                ))}
              </div>
            </div>

            <TwentyThreeResultsGrid
              numbers={activeResults}
              highlighted4d={highlightSet ?? undefined}
            />

            {showMyPayout && myTotals ? (
              <div className="rounded-xl border border-emerald-200 bg-emerald-50 px-3 py-3 text-sm shadow-[0_4px_14px_rgba(15,23,42,0.03)]">
                <p className="font-bold text-emerald-900">
                  {t(creditMode ? "results.creditMyWin" : "results.myPayout")}
                </p>
                <p className="mt-2 font-mono text-xs tabular-nums text-emerald-900/80">
                  {t("results.regular", {
                    amount: formatMinorAsCurrency(myTotals.win, currency),
                  })}
                  {myTotals.jackpot > 0 ? (
                    <>
                      {" "}
                      ·{" "}
                      {t("results.jackpot", {
                        amount: formatMinorAsCurrency(myTotals.jackpot, currency),
                      })}
                    </>
                  ) : null}
                </p>
              </div>
            ) : null}

            {showHitOnly ? (
              <div className="rounded-xl border border-amber-200 bg-amber-50 px-3 py-3 text-xs text-amber-950">
                {t(creditMode ? "results.creditHitPending" : "results.hitPending")}
              </div>
            ) : null}

            <DrawWinningCheckPanel
              key={checkOpen ? `${data.draw_no}:check` : data.draw_no}
              drawNo={data.draw_no}
              businessDate={data.business_date}
              drawTimeIso={data.draw_time_iso}
              drawTime={data.draw_time}
              defaultOpen={checkOpen}
            />
          </CardContent>
        </Card>
      </div>
    </PlayerPanel>
  );
}