import Link from "next/link";
import type { ReactNode } from "react";
import { Activity, RefreshCcw, Settings2, Wifi } from "lucide-react";
import { Button } from "@/components/ui/button";
import { Card, CardContent } from "@/components/ui/card";
import type { DashboardBalanceSummary } from "@/features/dashboard/types/dashboard.types";
import {
  formatCurrency,
  formatSignedCurrency,
  formatSignedPercent,
  getChangeToneClass,
} from "@/features/dashboard/utils/dashboard-format";
import { cn } from "@/lib/utils";

interface StatusHeaderProps {
  summary: DashboardBalanceSummary | null;
  isKisRestConnected: boolean;
  isWebSocketReady: boolean;
  isRealtimePending: boolean;
  isProfileVerified: boolean;
  verifiedAccountNo: string | null;
  isRefreshing: boolean;
  lastUpdatedAt: string | null;
  onRefresh: () => void;
}

/**
 * @description 대시보드 상단 상태 헤더(총자산/손익/연결상태/빠른액션) 컴포넌트입니다.
 * @see features/dashboard/components/DashboardContainer.tsx 대시보드 루트에서 상태 값을 전달받아 렌더링합니다.
 */
export function StatusHeader({
  summary,
  isKisRestConnected,
  isWebSocketReady,
  isRealtimePending,
  isProfileVerified,
  verifiedAccountNo,
  isRefreshing,
  lastUpdatedAt,
  onRefresh,
}: StatusHeaderProps) {
  const toneClass = getChangeToneClass(summary?.totalProfitLoss ?? 0);
  const updatedLabel = lastUpdatedAt
    ? new Date(lastUpdatedAt).toLocaleTimeString("ko-KR", {
        hour12: false,
      })
    : "--:--:--";
  const hasApiTotalAmount =
    Boolean(summary) && (summary?.apiReportedTotalAmount ?? 0) > 0;
  const hasApiNetAssetAmount =
    Boolean(summary) && (summary?.apiReportedNetAssetAmount ?? 0) > 0;
  const isApiTotalAmountDifferent =
    Boolean(summary) &&
    Math.abs(
      (summary?.apiReportedTotalAmount ?? 0) - (summary?.totalAmount ?? 0),
    ) >= 1;
  const realtimeStatusLabel = isWebSocketReady
    ? isRealtimePending
      ? "수신 대기중"
      : "연결됨"
    : "미연결";
  const displayGrossTotalAmount = hasApiTotalAmount
    ? summary?.apiReportedTotalAmount ?? 0
    : summary?.totalAmount ?? 0;

  return (
    <Card className="relative overflow-hidden border-brand-200/80 bg-linear-to-br from-brand-50/80 via-background to-brand-50/20 shadow-sm dark:border-brand-800/45 dark:from-brand-900/25 dark:via-background dark:to-background">
      <div className="pointer-events-none absolute -right-14 -top-14 h-52 w-52 rounded-full bg-brand-300/30 blur-3xl dark:bg-brand-700/20" />
      <div className="pointer-events-none absolute -left-16 bottom-0 h-44 w-44 rounded-full bg-brand-200/25 blur-3xl dark:bg-brand-800/20" />

      <CardContent className="relative space-y-3 p-4 md:p-5">
        <div className="grid gap-3 xl:grid-cols-[1fr_1fr_auto]">
          <div className="rounded-2xl border border-brand-200/70 bg-background/85 p-4 shadow-sm dark:border-brand-800/60 dark:bg-brand-950/20">
            <p className="text-xs font-semibold tracking-wide text-muted-foreground">
              TOTAL ASSET
            </p>
            <p className="mt-2 text-2xl font-bold tracking-tight text-foreground md:text-3xl">
              {summary ? `${formatCurrency(displayGrossTotalAmount)}원` : "-"}
            </p>
            <p className="mt-1 text-xs text-muted-foreground">
              순자산 {summary ? `${formatCurrency(summary.netAssetAmount)}원` : "-"}
            </p>
            <p className="mt-1 text-xs text-muted-foreground">
              현금 {summary ? `${formatCurrency(summary.cashBalance)}원` : "-"} · 평가금{" "}
              {summary ? `${formatCurrency(summary.evaluationAmount)}원` : "-"}
            </p>
          </div>

          <div className="rounded-2xl border border-border/70 bg-background/85 p-4 shadow-sm">
            <p className="text-xs font-semibold tracking-wide text-muted-foreground">
              TODAY P/L
            </p>
            <p className={cn("mt-2 text-2xl font-bold tracking-tight md:text-3xl", toneClass)}>
              {summary ? `${formatSignedCurrency(summary.totalProfitLoss)}원` : "-"}
            </p>
            <p className={cn("mt-1 text-sm font-semibold", toneClass)}>
              {summary ? formatSignedPercent(summary.totalProfitRate) : "-"}
            </p>
            <p className="mt-2 text-xs text-muted-foreground">
              매수금 {summary ? `${formatCurrency(summary.purchaseAmount)}원` : "-"} · 대출금{" "}
              {summary ? `${formatCurrency(summary.loanAmount)}원` : "-"}
            </p>
          </div>

          <div className="flex flex-col gap-2 rounded-2xl border border-border/70 bg-background/85 p-3">
            <Button
              type="button"
              variant="outline"
              onClick={onRefresh}
              disabled={isRefreshing}
              className="w-full border-brand-200 text-brand-700 hover:bg-brand-50 dark:border-brand-700 dark:text-brand-300 dark:hover:bg-brand-900/30"
            >
              <RefreshCcw className={cn("mr-2 h-4 w-4", isRefreshing ? "animate-spin" : "")} />
              다시 불러오기
            </Button>
            <Button
              asChild
              className="w-full bg-brand-600 text-white hover:bg-brand-700 dark:bg-brand-600 dark:text-white dark:hover:bg-brand-500"
            >
              <Link href="/settings">
                <Settings2 className="mr-2 h-4 w-4" />
                연결 설정
              </Link>
            </Button>
            <div className="mt-1 rounded-xl border border-border/70 bg-muted/30 px-2.5 py-2 text-[11px] text-muted-foreground">
              <p>업데이트 {updatedLabel}</p>
              <p>계좌 {maskAccountNo(verifiedAccountNo)}</p>
            </div>
          </div>
        </div>

        <div className="grid gap-2 sm:grid-cols-2 xl:grid-cols-4">
          <OverviewMetric
            icon={<Wifi className="h-3.5 w-3.5" />}
            label="REST 연결"
            value={isKisRestConnected ? "정상" : "끊김"}
            toneClass={
              isKisRestConnected
                ? "border-emerald-300/70 bg-emerald-50/60 text-emerald-700 dark:border-emerald-700/50 dark:bg-emerald-950/30 dark:text-emerald-300"
                : "border-red-300/70 bg-red-50/60 text-red-700 dark:border-red-700/50 dark:bg-red-950/30 dark:text-red-300"
            }
          />
          <OverviewMetric
            icon={<Activity className="h-3.5 w-3.5" />}
            label="실시간 시세"
            value={realtimeStatusLabel}
            toneClass={
              isWebSocketReady
                ? isRealtimePending
                  ? "border-amber-300/70 bg-amber-50/60 text-amber-700 dark:border-amber-700/50 dark:bg-amber-950/30 dark:text-amber-300"
                  : "border-emerald-300/70 bg-emerald-50/60 text-emerald-700 dark:border-emerald-700/50 dark:bg-emerald-950/30 dark:text-emerald-300"
                : "border-slate-300/70 bg-slate-50/60 text-slate-700 dark:border-slate-700/50 dark:bg-slate-900/30 dark:text-slate-300"
            }
          />
          <OverviewMetric
            icon={<Activity className="h-3.5 w-3.5" />}
            label="계좌 인증"
            value={isProfileVerified ? "완료" : "미완료"}
            toneClass={
              isProfileVerified
                ? "border-emerald-300/70 bg-emerald-50/60 text-emerald-700 dark:border-emerald-700/50 dark:bg-emerald-950/30 dark:text-emerald-300"
                : "border-amber-300/70 bg-amber-50/60 text-amber-700 dark:border-amber-700/50 dark:bg-amber-950/30 dark:text-amber-300"
            }
          />
          <OverviewMetric
            icon={<Activity className="h-3.5 w-3.5" />}
            label="총예수금(KIS)"
            value={summary ? `${formatCurrency(summary.totalDepositAmount)}원` : "-"}
            toneClass="border-brand-200/80 bg-brand-50/70 text-brand-700 dark:border-brand-700/60 dark:bg-brand-900/35 dark:text-brand-300"
          />
        </div>

        {hasApiTotalAmount && isApiTotalAmountDifferent ? (
          <p className="text-xs text-muted-foreground">
            내부 계산 총자산 {formatCurrency(summary?.totalAmount ?? 0)}원 · KIS 총자산{" "}
            {formatCurrency(summary?.apiReportedTotalAmount ?? 0)}원
          </p>
        ) : null}
        {hasApiNetAssetAmount ? (
          <p className="text-xs text-muted-foreground">
            KIS 집계 순자산 {formatCurrency(summary?.apiReportedNetAssetAmount ?? 0)}원
          </p>
        ) : null}
      </CardContent>
    </Card>
  );
}

function OverviewMetric({
  icon,
  label,
  value,
  toneClass,
}: {
  icon: ReactNode;
  label: string;
  value: string;
  toneClass: string;
}) {
  return (
    <div className={cn("rounded-xl border px-3 py-2", toneClass)}>
      <p className="flex items-center gap-1 text-[11px] font-medium opacity-85">
        {icon}
        {label}
      </p>
      <p className="mt-0.5 text-xs font-semibold">{value}</p>
    </div>
  );
}

/**
 * @description 계좌번호를 마스킹해 표시합니다.
 * @param value 계좌번호(8-2)
 * @returns 마스킹 문자열
 * @see features/dashboard/components/StatusHeader.tsx 시스템 상태 영역 계좌 표시
 */
function maskAccountNo(value: string | null) {
  if (!value) return "-";
  const digits = value.replace(/\D/g, "");
  if (digits.length !== 10) return "********";
  return "********-**";
}