"use client";

import React, { useState, useEffect, useRef, ReactNode } from "react";
import { useRouter } from "next/navigation";
import { useAuth } from "@/hooks/useAuth";
import { usePopSettings } from "@/hooks/pop/usePopSettings";

interface PopShellProps {
  children: ReactNode;
  showBanner?: boolean;
  title?: string;
  showBack?: boolean;
  headerRight?: ReactNode;
  fullBleed?: boolean;
}

export function PopShell({ children, showBanner = true, title, showBack = false, headerRight, fullBleed = false }: PopShellProps) {
  const router = useRouter();
  const { user, logout } = useAuth();
  const displayName = user?.userName || user?.userId || "사용자";
  const deptName = user?.deptName || "";
  const initial = displayName.charAt(0);
  const [mounted, setMounted] = useState(false);
  const [hours, setHours] = useState("00");
  const [minutes, setMinutes] = useState("00");
  const [seconds, setSeconds] = useState("00");
  const [dateStr, setDateStr] = useState("2026-01-01");
  const [colonVisible, setColonVisible] = useState(true);
  const [profileOpen, setProfileOpen] = useState(false);
  const profileRef = useRef<HTMLDivElement>(null);

  useEffect(() => {
    setMounted(true);

    function tick() {
      const now = new Date();
      setHours(String(now.getHours()).padStart(2, "0"));
      setMinutes(String(now.getMinutes()).padStart(2, "0"));
      setSeconds(String(now.getSeconds()).padStart(2, "0"));
      setDateStr(
        `${now.getFullYear()}-${String(now.getMonth() + 1).padStart(2, "0")}-${String(now.getDate()).padStart(2, "0")}`
      );
    }

    tick();
    const clockInterval = setInterval(tick, 1000);
    const blinkInterval = setInterval(() => {
      setColonVisible((v) => !v);
    }, 500);

    return () => {
      clearInterval(clockInterval);
      clearInterval(blinkInterval);
    };
  }, []);

  // Profile dropdown: close on outside click
  useEffect(() => {
    function handleClickOutside(e: MouseEvent) {
      if (profileRef.current && !profileRef.current.contains(e.target as Node)) {
        setProfileOpen(false);
      }
    }
    if (profileOpen) {
      document.addEventListener("mousedown", handleClickOutside);
    }
    return () => {
      document.removeEventListener("mousedown", handleClickOutside);
    };
  }, [profileOpen]);

  const handlePcMode = async () => {
    setProfileOpen(false);
    if (document.fullscreenElement) {
      try { await document.exitFullscreen(); } catch {}
    }
    router.push("/");
  };

  const handlePopHome = () => {
    setProfileOpen(false);
    router.push("/pop/home");
  };

  const toggleFullscreen = async () => {
    setProfileOpen(false);
    try {
      if (document.fullscreenElement) {
        await document.exitFullscreen();
      } else {
        await document.documentElement.requestFullscreen();
      }
    } catch {
      // fullscreen not supported
    }
  };

  const handleLogout = () => {
    setProfileOpen(false);
    logout();
  };

  // POP 설정에서 배너 텍스트 로드 (POP화면설정에서 관리)
  const { settings: popSettings } = usePopSettings("/pop/home");
  const homeConfig = (popSettings as any)?.screens?.home;
  const bannerEnabled = homeConfig?.bannerEnabled ?? true;
  const bannerText = homeConfig?.bannerText;
  const marqueeText = bannerText || "[공지] 금일 오후 3시 전체 안전교육 실시 예정입니다. 전 직원 필참 바랍니다. \u00a0\u00a0|\u00a0\u00a0 [알림] 내일 설비 정기점검으로 인한 3호기 가동 중지 예정 \u00a0\u00a0|\u00a0\u00a0 [안내] 4월 생산실적 우수팀 발표 - 생산1팀 축하드립니다!";

  return (
    <div className="min-h-screen min-h-dvh flex flex-col" style={{ background: "#F5F5F5" }}>
      {/* ===== HEADER ===== */}
      <header
        className="sticky top-0 z-50 flex items-center justify-between px-4 sm:px-6 lg:px-8 py-3"
        style={{ background: "#1a1a2e" }}
      >
        {/* Left: Back + Logo + Company */}
        <div className="flex items-center gap-3 min-w-0">
          {showBack && (
            <button
              onClick={() => router.back()}
              className="w-10 h-10 rounded-xl bg-white/10 flex items-center justify-center shrink-0 hover:bg-white/20 active:scale-95 transition-all"
            >
              <svg className="w-5 h-5 text-white" fill="none" stroke="currentColor" strokeWidth={2} viewBox="0 0 24 24">
                <path strokeLinecap="round" strokeLinejoin="round" d="M15.75 19.5L8.25 12l7.5-7.5" />
              </svg>
            </button>
          )}
          <div
            className="flex items-center gap-3 min-w-0 cursor-pointer"
            onClick={() => router.push("/pop/home")}
          >
            <div
              className="w-10 h-10 rounded-xl bg-blue-500 flex items-center justify-center shrink-0"
              style={{ boxShadow: "0 4px 12px rgba(59,130,246,.35)" }}
            >
              <svg
                className="w-5 h-5 text-white"
                fill="none"
                stroke="currentColor"
                strokeWidth={2}
                viewBox="0 0 24 24"
              >
                <path
                  strokeLinecap="round"
                  strokeLinejoin="round"
                  d="M3.75 6A2.25 2.25 0 016 3.75h2.25A2.25 2.25 0 0110.5 6v2.25a2.25 2.25 0 01-2.25 2.25H6a2.25 2.25 0 01-2.25-2.25V6zM3.75 15.75A2.25 2.25 0 016 13.5h2.25a2.25 2.25 0 012.25 2.25V18a2.25 2.25 0 01-2.25 2.25H6A2.25 2.25 0 013.75 18v-2.25zM13.5 6a2.25 2.25 0 012.25-2.25H18A2.25 2.25 0 0120.25 6v2.25A2.25 2.25 0 0118 10.5h-2.25a2.25 2.25 0 01-2.25-2.25V6zM13.5 15.75a2.25 2.25 0 012.25-2.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-2.25A2.25 2.25 0 0113.5 18v-2.25z"
                />
              </svg>
            </div>
            <div className="flex flex-col min-w-0">
              {title ? (
                <span className="text-white text-lg font-bold tracking-tight leading-tight truncate">
                  {title}
                </span>
              ) : (
                <>
                  <span className="text-white text-lg font-bold tracking-tight leading-tight truncate">
                    {user?.companyName || "POP"}
                  </span>
                  <span className="text-white/50 text-xs font-medium leading-tight">
                    현장 관리 시스템
                  </span>
                </>
              )}
            </div>
          </div>
        </div>

        {/* Center: Clock (desktop) */}
        <div className="hidden sm:flex flex-col items-center">
          {mounted && (
            <>
              <div
                className="flex items-center text-white font-bold text-2xl tracking-wider"
                style={{ fontVariantNumeric: "tabular-nums" }}
              >
                <span>{hours}</span>
                <span
                  className="transition-opacity duration-100"
                  style={{ opacity: colonVisible ? 1 : 0 }}
                >
                  :
                </span>
                <span>{minutes}</span>
                <span
                  className="transition-opacity duration-100"
                  style={{ opacity: colonVisible ? 1 : 0 }}
                >
                  :
                </span>
                <span>{seconds}</span>
              </div>
              <span className="text-white/50 text-xs font-medium mt-0.5">{dateStr}</span>
            </>
          )}
        </div>

        {/* Right: Mobile clock + Profile */}
        <div className="flex items-center gap-3">
          {/* Mobile clock */}
          {mounted && (
            <div className="sm:hidden flex items-center gap-1.5 text-white/60 text-sm">
              <svg
                className="w-4 h-4"
                fill="none"
                stroke="currentColor"
                strokeWidth={2}
                viewBox="0 0 24 24"
              >
                <path
                  strokeLinecap="round"
                  strokeLinejoin="round"
                  d="M12 6v6h4.5m4.5 0a9 9 0 11-18 0 9 9 0 0118 0z"
                />
              </svg>
              <span>
                {hours}:{minutes}
              </span>
            </div>
          )}

          {/* Custom header right content (e.g. cart icon) */}
          {headerRight}

          <div className="hidden sm:block h-5 w-px bg-white/20" />

          {/* Profile with Dropdown */}
          <div className="relative" ref={profileRef}>
            <button
              onClick={() => setProfileOpen((v) => !v)}
              className="flex items-center gap-2.5 cursor-pointer"
            >
              <div className="hidden sm:flex flex-col items-end">
                <span className="text-sm text-white/90 font-semibold leading-tight">{displayName}</span>
                <span className="text-xs text-white/40 font-medium leading-tight">{deptName}</span>
              </div>
              <div
                className="w-10 h-10 rounded-full bg-blue-500 flex items-center justify-center text-sm font-bold text-white shrink-0 transition-transform active:scale-95"
                style={{ boxShadow: "0 2px 8px rgba(59,130,246,.35)" }}
              >
                {initial}
              </div>
            </button>

            {/* Profile Dropdown */}
            <div
              className={`absolute right-0 top-full mt-2 w-56 bg-white rounded-xl shadow-lg border border-gray-200 overflow-hidden z-[60] transition-all duration-200 origin-top-right ${
                profileOpen
                  ? "opacity-100 scale-100 translate-y-0"
                  : "opacity-0 scale-95 -translate-y-1 pointer-events-none"
              }`}
            >
              {/* User Info */}
              <div className="px-4 py-3 border-b border-gray-100">
                <p className="text-sm font-semibold text-gray-900">{displayName}</p>
                <p className="text-xs text-gray-400 mt-0.5">{deptName || user?.userId}</p>
              </div>

              {/* Menu Items */}
              <div className="py-1">
                <button
                  onClick={handlePcMode}
                  className="flex items-center gap-3 w-full px-4 text-sm text-gray-700 hover:bg-gray-50 active:scale-95 transition-all"
                  style={{ minHeight: 48 }}
                >
                  <span className="text-base">🖥</span>
                  <span>PC 모드 전환</span>
                </button>
                <button
                  onClick={toggleFullscreen}
                  className="flex items-center gap-3 w-full px-4 text-sm text-gray-700 hover:bg-gray-50 active:scale-95 transition-all"
                  style={{ minHeight: 48 }}
                >
                  <span className="text-base">📱</span>
                  <span>앱 모드 (전체화면)</span>
                </button>
                <button
                  onClick={handlePopHome}
                  className="flex items-center gap-3 w-full px-4 text-sm text-gray-700 hover:bg-gray-50 active:scale-95 transition-all"
                  style={{ minHeight: 48 }}
                >
                  <span className="text-base">🏠</span>
                  <span>POP 홈</span>
                </button>
              </div>

              {/* Logout */}
              <div className="border-t border-gray-100 py-1">
                <button
                  onClick={handleLogout}
                  className="flex items-center gap-3 w-full px-4 text-sm text-red-500 hover:bg-red-50 active:scale-95 transition-all"
                  style={{ minHeight: 48 }}
                >
                  <span className="text-base">🚪</span>
                  <span>로그아웃</span>
                </button>
              </div>
            </div>
          </div>
        </div>
      </header>

      {/* ===== NOTICE BANNER (Marquee) ===== */}
      {showBanner && bannerEnabled && <div className="bg-amber-50 border-b border-amber-200 px-4 py-2 flex items-center gap-3">
        <div className="flex items-center gap-1.5 shrink-0">
          <span className="text-amber-600 text-sm">📢</span>
          <span className="text-xs font-bold text-amber-700">공지</span>
        </div>
        <div className="overflow-hidden whitespace-nowrap flex-1">
          <div
            className="inline-block text-sm text-amber-800"
            style={{
              animation: "popMarquee 30s linear infinite",
            }}
          >
            {marqueeText}
          </div>
        </div>
      </div>}

      {/* ===== MAIN CONTENT ===== */}
      <main className={fullBleed
        ? "flex-1 overflow-hidden"
        : "max-w-[1400px] mx-auto w-full px-4 sm:px-6 lg:px-8 py-5 sm:py-6 flex flex-col gap-5 sm:gap-6 flex-1 overflow-y-auto"
      }>
        {children}
      </main>

      {/* FOOTER 삭제 — POP 화면에서 불필요 */}

      {/* Marquee keyframes */}
      <style jsx global>{`
        @keyframes popMarquee {
          0% {
            transform: translateX(100%);
          }
          100% {
            transform: translateX(-100%);
          }
        }
      `}</style>
    </div>
  );
}