import Link from "next/link";
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";

  return (
    <Card className="relative overflow-hidden border-brand-200 shadow-sm dark:border-brand-800/50">
      {/* ========== BACKGROUND DECORATION ========== */}
      <div className="pointer-events-none absolute inset-x-0 top-0 h-20 bg-linear-to-r from-brand-100/70 via-brand-50/50 to-transparent dark:from-brand-900/35 dark:via-brand-900/20" />

      <CardContent className="relative grid gap-3 p-4 md:grid-cols-[1fr_1fr_1fr_auto]">
        {/* ========== TOTAL ASSET ========== */}
        <div className="rounded-xl border border-border/70 bg-background/90 px-4 py-3">
          <p className="text-xs font-medium text-muted-foreground">내 자산 (순자산 실시간)</p>
          <p className="mt-1 text-xl font-semibold tracking-tight">
            {summary ? `${formatCurrency(summary.totalAmount)}원` : "-"}
          </p>
          <p className="mt-1 text-xs text-muted-foreground">
            현금(예수금) {summary ? `${formatCurrency(summary.cashBalance)}원` : "-"}
          </p>
          <p className="mt-1 text-xs text-muted-foreground">
            주식 평가금{" "}
            {summary ? `${formatCurrency(summary.evaluationAmount)}원` : "-"}
          </p>
          <p className="mt-1 text-xs text-muted-foreground">
            총예수금(KIS){" "}
            {summary ? `${formatCurrency(summary.totalDepositAmount)}원` : "-"}
          </p>
          <p className="mt-1 text-[11px] text-muted-foreground/80">
            총예수금은 결제 대기 금액이 포함될 수 있어 체감 현금과 다를 수 있습니다.
          </p>
          <p className="mt-1 text-xs text-muted-foreground">
            순자산(대출 반영){" "}
            {summary ? `${formatCurrency(summary.netAssetAmount)}원` : "-"}
          </p>
          {hasApiTotalAmount && isApiTotalAmountDifferent ? (
            <p className="mt-1 text-xs text-muted-foreground">
              KIS 집계 총자산 {formatCurrency(summary?.apiReportedTotalAmount ?? 0)}원
            </p>
          ) : null}
          {hasApiNetAssetAmount ? (
            <p className="mt-1 text-xs text-muted-foreground">
              KIS 집계 순자산 {formatCurrency(summary?.apiReportedNetAssetAmount ?? 0)}원
            </p>
          ) : null}
        </div>

        {/* ========== PROFIT/LOSS ========== */}
        <div className="rounded-xl border border-border/70 bg-background/90 px-4 py-3">
          <p className="text-xs font-medium text-muted-foreground">현재 손익</p>
          <p
            className={cn(
              "mt-1 text-xl font-semibold tracking-tight",
              toneClass,
            )}
          >
            {summary ? `${formatSignedCurrency(summary.totalProfitLoss)}원` : "-"}
          </p>
          <p className={cn("mt-1 text-xs font-medium", toneClass)}>
            {summary ? formatSignedPercent(summary.totalProfitRate) : "-"}
          </p>
          <p className="mt-1 text-xs text-muted-foreground">
            현재 평가금액{" "}
            {summary ? `${formatCurrency(summary.evaluationAmount)}원` : "-"}
          </p>
          <p className="mt-1 text-xs text-muted-foreground">
            총 매수금액{" "}
            {summary ? `${formatCurrency(summary.purchaseAmount)}원` : "-"}
          </p>
        </div>

        {/* ========== CONNECTION STATUS ========== */}
        <div className="rounded-xl border border-border/70 bg-background/90 px-4 py-3">
          <p className="text-xs font-medium text-muted-foreground">연결 상태</p>
          <div className="mt-2 flex flex-wrap items-center gap-2 text-xs font-medium">
            <span
              className={cn(
                "inline-flex items-center gap-1 rounded-full px-2 py-1",
                isKisRestConnected
                  ? "bg-emerald-500/10 text-emerald-600 dark:text-emerald-400"
                  : "bg-red-500/10 text-red-600 dark:text-red-400",
              )}
            >
              <Wifi className="h-3.5 w-3.5" />
              서버 {isKisRestConnected ? "연결됨" : "연결 끊김"}
            </span>
            <span
              className={cn(
                "inline-flex items-center gap-1 rounded-full px-2 py-1",
                isWebSocketReady
                  ? isRealtimePending
                    ? "bg-amber-500/10 text-amber-700 dark:text-amber-400"
                    : "bg-emerald-500/10 text-emerald-600 dark:text-emerald-400"
                  : "bg-muted text-muted-foreground",
              )}
            >
              <Activity className="h-3.5 w-3.5" />
              실시간 시세 {realtimeStatusLabel}
            </span>
            <span
              className={cn(
                "inline-flex items-center gap-1 rounded-full px-2 py-1",
                isProfileVerified
                  ? "bg-emerald-500/10 text-emerald-600 dark:text-emerald-400"
                  : "bg-amber-500/10 text-amber-700 dark:text-amber-400",
              )}
            >
              <Activity className="h-3.5 w-3.5" />
              계좌 인증 {isProfileVerified ? "완료" : "미완료"}
            </span>
          </div>
          <p className="mt-2 text-xs text-muted-foreground">
            마지막 업데이트 {updatedLabel}
          </p>
          <p className="mt-1 text-xs text-muted-foreground">
            계좌 {maskAccountNo(verifiedAccountNo)}
          </p>
          <p className="mt-1 text-xs text-muted-foreground">
            대출금 {summary ? `${formatCurrency(summary.loanAmount)}원` : "-"}
          </p>
        </div>

        {/* ========== QUICK ACTIONS ========== */}
        <div className="flex flex-col gap-2 sm:flex-row md:flex-col md:items-stretch md:justify-center">
          <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("h-4 w-4 mr-2", isRefreshing ? "animate-spin" : "")}
            />
            지금 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="h-4 w-4 mr-2" />
              연결 설정
            </Link>
          </Button>
        </div>
      </CardContent>
    </Card>
  );
}

/**
 * @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 "********-**";
}