interface StatCard {
  label: string;
  value: string;
  sub: { type: "trend" | "stable"; text: string; color?: string };
  icon: string;
  iconBg: string;
  iconColor: string;
}

interface ServiceStatsCardsProps {
  totalSent: number;
  successRate: number;
  deviceCount: number;
  todaySent: number;
  sentChangeRate?: number;
  successRateChange?: number;
  deviceCountChange?: number;
  todaySentChangeRate?: number;
}

export default function ServiceStatsCards({
  totalSent,
  successRate,
  deviceCount,
  todaySent,
  sentChangeRate = 0,
  successRateChange = 0,
  deviceCountChange = 0,
  todaySentChangeRate = 0,
}: ServiceStatsCardsProps) {
  const noChange: StatCard["sub"] = { type: "stable", text: "변동 없음" };

  const cards: StatCard[] = [
    {
      label: "총 발송 수",
      value: totalSent.toLocaleString(),
      sub: sentChangeRate === 0
        ? noChange
        : sentChangeRate > 0
          ? { type: "trend", text: `+${sentChangeRate.toLocaleString()}`, color: "text-indigo-600" }
          : { type: "trend", text: `${sentChangeRate.toLocaleString()}`, color: "text-red-500" },
      icon: "equalizer",
      iconBg: "bg-indigo-50",
      iconColor: "text-indigo-600",
    },
    {
      label: "성공률",
      value: `${successRate}%`,
      sub: successRateChange === 0
        ? noChange
        : successRateChange > 0
          ? { type: "trend", text: `+${successRateChange.toFixed(1)}%`, color: "text-emerald-600" }
          : { type: "trend", text: `${successRateChange.toFixed(1)}%`, color: "text-red-500" },
      icon: "check_circle",
      iconBg: "bg-emerald-50",
      iconColor: "text-emerald-600",
    },
    {
      label: "등록 기기 수",
      value: deviceCount.toLocaleString(),
      sub: deviceCountChange === 0
        ? noChange
        : deviceCountChange > 0
          ? { type: "trend", text: `+${deviceCountChange.toLocaleString()} today`, color: "text-amber-600" }
          : { type: "trend", text: `${deviceCountChange.toLocaleString()} today`, color: "text-red-500" },
      icon: "devices",
      iconBg: "bg-amber-50",
      iconColor: "text-amber-600",
    },
    {
      label: "오늘 발송",
      value: todaySent.toLocaleString(),
      sub: todaySentChangeRate === 0
        ? noChange
        : todaySentChangeRate > 0
          ? { type: "trend", text: `+${todaySentChangeRate.toLocaleString()}`, color: "text-[#2563EB]" }
          : { type: "trend", text: `${todaySentChangeRate.toLocaleString()}`, color: "text-red-500" },
      icon: "today",
      iconBg: "bg-[#2563EB]/5",
      iconColor: "text-[#2563EB]",
    },
  ];

  return (
    <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-4 gap-4 mb-8">
      {cards.map((card) => (
        <div
          key={card.label}
          className="bg-white border border-gray-200 rounded-lg shadow-sm p-6"
        >
          <div className="flex items-start justify-between">
            <div className="flex-1">
              <p className="text-xs text-[#64748b] font-semibold uppercase tracking-wide">
                {card.label}
              </p>
              <p className="text-2xl font-bold text-[#0f172a] mt-2">
                {card.value}
              </p>
              <div className="mt-2">
                {card.sub.type === "trend" && (
                  <p className={`text-xs ${card.sub.color ?? "text-green-600"} font-medium flex items-center gap-1`}>
                    <span
                      className="material-symbols-outlined"
                      style={{ fontSize: "14px" }}
                    >
                      {card.sub.text.startsWith("-") ? "trending_down" : "trending_up"}
                    </span>
                    <span>{card.sub.text}</span>
                  </p>
                )}
                {card.sub.type === "stable" && (
                  <p className="text-xs text-gray-600 font-medium flex items-center gap-1">
                    <span className="w-2 h-2 rounded-full bg-gray-400" />
                    <span>{card.sub.text}</span>
                  </p>
                )}
              </div>
            </div>
            <div
              className={`size-12 rounded-lg ${card.iconBg} flex items-center justify-center flex-shrink-0`}
            >
              <span
                className={`material-symbols-outlined ${card.iconColor} text-2xl`}
              >
                {card.icon}
              </span>
            </div>
          </div>
        </div>
      ))}
    </div>
  );
}