import { useState, useRef, useEffect, useMemo } from 'react'
import type { MainTab } from '../../types/navigation'
import { useAuthStore } from '../../store/authStore'
import { useMenuStore } from '../../store/menuStore'
import { useMapStore } from '../../store/mapStore'
import UserManualPopup from '../ui/UserManualPopup'

interface TopBarProps {
  activeTab: MainTab
  onTabChange: (tab: MainTab) => void
}

export function TopBar({ activeTab, onTabChange }: TopBarProps) {
  const [showQuickMenu, setShowQuickMenu] = useState(false)
  const [showManual, setShowManual] = useState(false)
  const quickMenuRef = useRef<HTMLDivElement>(null)
  const { hasPermission, user, logout } = useAuthStore()
  const { menuConfig, isLoaded } = useMenuStore()
  const { mapToggles, toggleMap, mapTypes, measureMode, setMeasureMode } = useMapStore()

  const MAP_TABS = new Set<string>(['prediction', 'hns', 'scat', 'incidents'])
  const isMapTab = MAP_TABS.has(activeTab)

  const handleToggleMeasure = (mode: 'distance' | 'area') => {
    if (!isMapTab) return;
    setMeasureMode(measureMode === mode ? null : mode);
    setShowQuickMenu(false);
  };

  const tabs = useMemo(() => {
    if (!isLoaded || menuConfig.length === 0) return []

    return menuConfig
      .filter((m) => m.enabled && hasPermission(m.id))
      .sort((a, b) => a.order - b.order)
  }, [hasPermission, user?.permissions, menuConfig, isLoaded])

  useEffect(() => {
    const handler = (e: MouseEvent) => {
      if (quickMenuRef.current && !quickMenuRef.current.contains(e.target as Node)) setShowQuickMenu(false)
    }
    if (showQuickMenu) document.addEventListener('mousedown', handler)
    return () => document.removeEventListener('mousedown', handler)
  }, [showQuickMenu])

  return (
    <div className="h-[52px] bg-bg-1 border-b border-border flex items-center justify-between px-5 relative z-[100]">
      {/* Left Section */}
      <div className="flex items-center gap-4">
        {/* Logo */}
        <button
          onClick={() => tabs[0] && onTabChange(tabs[0].id as MainTab)}
          className="flex items-center hover:opacity-80 transition-opacity cursor-pointer"
          title="홈으로 이동"
        >
          <img src="/wing_logo_white.svg" alt="WING 해양환경 위기대응" className="h-3.5" />
        </button>

        {/* Divider */}
        <div className="w-px h-6 bg-border-light" />

        {/* Tabs */}
        <div className="flex gap-0.5">
          {tabs.map((tab) => {
            const isIncident = tab.id === 'incidents'
            const isMonitor = tab.id === 'monitor'
            const handleClick = () => {
              if (isMonitor) {
                window.open(import.meta.env.VITE_SITUATIONAL_URL ?? 'https://kcg.gc-si.dev', '_blank')
              } else {
                onTabChange(tab.id as MainTab)
              }
            }
            return (
            <button
              key={tab.id}
              onClick={handleClick}
              title={tab.label}
              className={`
                px-2.5 xl:px-4 py-2 rounded-sm text-[13px] transition-all duration-200
                font-korean tracking-[0.2px]
                ${isIncident ? 'font-extrabold border-l border-l-[rgba(99,102,241,0.2)] ml-1' : 'font-semibold'}
                ${isMonitor ? 'border-l border-l-[rgba(239,68,68,0.25)] ml-1 flex items-center gap-1.5' : ''}
                ${
                  isMonitor
                    ? 'text-[#f87171] hover:text-[#fca5a5] hover:bg-[rgba(239,68,68,0.1)]'
                    : activeTab === tab.id
                      ? isIncident
                        ? 'text-[#a5b4fc] bg-[rgba(99,102,241,0.18)] shadow-[0_0_8px_rgba(99,102,241,0.3)]'
                        : 'text-[#22d3ee] bg-[rgba(6,182,212,0.15)] shadow-[0_0_8px_rgba(6,182,212,0.3)]'
                      : isIncident
                        ? 'text-[#818cf8] hover:text-[#a5b4fc] hover:bg-[rgba(99,102,241,0.1)]'
                        : 'text-[#c8d6e5] hover:text-white hover:bg-[rgba(255,255,255,0.08)]'
                }
              `}
            >
              {isMonitor ? (
                <>
                  <span className="hidden xl:flex items-center gap-1.5">
                    <span className="w-1.5 h-1.5 rounded-full bg-[#f87171] animate-pulse inline-block" />
                    {tab.label}
                  </span>
                  <span className="xl:hidden text-[16px] leading-none">{tab.icon}</span>
                </>
              ) : (
                <>
                  <span className="xl:hidden text-[16px] leading-none">{tab.icon}</span>
                  <span className="hidden xl:inline">{tab.label}</span>
                </>
              )}
            </button>
            )
          })}
        </div>
      </div>

      {/* Right Section */}
      <div className="flex items-center gap-3">
        {/* Status Badge */}
        <div className="flex items-center gap-2 px-3 py-1.5 bg-[rgba(239,68,68,0.1)] border border-[rgba(239,68,68,0.2)] rounded-sm text-xs font-medium text-status-red animate-pulse">
          <div className="w-1.5 h-1.5 rounded-full bg-status-red animate-pulse" />
          사고 진행중
        </div>

        {/* Icon Buttons */}
        <button className="w-9 h-9 rounded-sm border border-border bg-bg-3 text-text-2 flex items-center justify-center hover:bg-bg-hover hover:text-text-1 transition-all">
          🔔
        </button>
        {hasPermission('admin') && (
          <button
            onClick={() => onTabChange('admin')}
            className={`w-9 h-9 rounded-sm border flex items-center justify-center transition-all ${
              activeTab === 'admin'
                ? 'border-primary-cyan bg-[rgba(6,182,212,0.15)] text-primary-cyan'
                : 'border-border bg-bg-3 text-text-2 hover:bg-bg-hover hover:text-text-1'
            }`}
          >
            ⚙️
          </button>
        )}
        {user && (
          <div className="flex items-center gap-2 pl-2 border-l border-border">
            <span className="text-[11px] text-text-2 font-korean">{user.name}</span>
            <button
              onClick={() => logout()}
              className="px-2 py-1 text-[10px] font-semibold text-text-3 border border-border rounded hover:bg-bg-hover hover:text-text-1 transition-all font-korean"
              title="로그아웃"
            >
              로그아웃
            </button>
          </div>
        )}

        {/* Quick Menu */}
        <div ref={quickMenuRef} className="relative">
          <button
            onClick={() => setShowQuickMenu(!showQuickMenu)}
            className={`w-9 h-9 rounded-sm border flex items-center justify-center transition-all ${
              showQuickMenu
                ? 'border-primary-cyan bg-[rgba(6,182,212,0.15)] text-primary-cyan'
                : 'border-border bg-bg-3 text-text-2 hover:bg-bg-hover hover:text-text-1'
            }`}
          >
            <svg width="16" height="16" viewBox="0 0 16 16" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round"><line x1="2" y1="4" x2="14" y2="4" /><line x1="2" y1="8" x2="14" y2="8" /><line x1="2" y1="12" x2="14" y2="12" /></svg>
          </button>

          {showQuickMenu && (
            <div className="absolute top-[44px] right-0 w-[220px] bg-[rgba(18,25,41,0.97)] backdrop-blur-xl border border-border rounded-lg shadow-2xl z-[200] py-2 font-korean">
              {/* 거리·면적 계산 */}
              {/* <div className="px-3 py-1.5 flex items-center gap-2 text-[11px] font-bold text-text-3">
                <span>📐</span> 거리·면적 계산
              </div> */}
              <button
                onClick={() => handleToggleMeasure('distance')}
                disabled={!isMapTab}
                className={`w-full px-3 py-2 flex items-center gap-2.5 text-[12px] transition-all ${
                  !isMapTab
                    ? 'text-text-3 opacity-40 cursor-not-allowed'
                    : measureMode === 'distance'
                      ? 'text-primary-cyan bg-[rgba(6,182,212,0.1)]'
                      : 'text-text-2 hover:bg-[rgba(255,255,255,0.06)] hover:text-text-1'
                }`}
              >
                <span className="text-[13px]">↗</span> 거리 재기
                {measureMode === 'distance' && <span className="ml-auto text-[10px] text-primary-cyan">활성</span>}
              </button>
              <button
                onClick={() => handleToggleMeasure('area')}
                disabled={!isMapTab}
                className={`w-full px-3 py-2 flex items-center gap-2.5 text-[12px] transition-all ${
                  !isMapTab
                    ? 'text-text-3 opacity-40 cursor-not-allowed'
                    : measureMode === 'area'
                      ? 'text-primary-cyan bg-[rgba(6,182,212,0.1)]'
                      : 'text-text-2 hover:bg-[rgba(255,255,255,0.06)] hover:text-text-1'
                }`}
              >
                <span className="text-[13px]">⭕</span> 면적 재기
                {measureMode === 'area' && <span className="ml-auto text-[10px] text-primary-cyan">활성</span>}
              </button>

              <div className="my-1.5 border-t border-border" />

              {/* 출력 */}
              <div className="px-3 py-1.5 flex items-center gap-2 text-[11px] font-bold text-text-3">
                <span>🖨</span> 출력
              </div>
              <button className="w-full px-3 py-2 flex items-center gap-2.5 text-[12px] text-text-2 hover:bg-[rgba(255,255,255,0.06)] hover:text-text-1 transition-all">
                <span className="text-[13px]">📸</span> 화면 캡쳐 다운로드
              </button>
              <button onClick={() => window.print()} className="w-full px-3 py-2 flex items-center gap-2.5 text-[12px] text-text-2 hover:bg-[rgba(255,255,255,0.06)] hover:text-text-1 transition-all">
                <span className="text-[13px]">🖨</span> 인쇄
              </button>

              <div className="my-1.5 border-t border-border" />

              {/* 지도 유형 */}
              <div className="px-3 py-1.5 flex items-center gap-2 text-[11px] font-bold text-text-3">
                <span>🗺</span> 지도 유형
              </div>
              {mapTypes.map(item => (
                <button key={item.mapKey} onClick={() => toggleMap(item.mapKey)} className="w-full px-3 py-2 flex items-center justify-between text-[12px] text-text-2 hover:bg-[rgba(255,255,255,0.06)] transition-all">
                  <span className="flex items-center gap-2.5">
                    <span className="text-[13px]">🗺</span> {item.mapNm}
                  </span>
                  <div className={`w-[34px] h-[18px] rounded-full transition-all relative ${mapToggles[item.mapKey] ? 'bg-primary-cyan' : 'bg-bg-3 border border-border'}`}>
                    <div className={`absolute top-[2px] w-[14px] h-[14px] rounded-full bg-white shadow transition-all ${mapToggles[item.mapKey] ? 'left-[16px]' : 'left-[2px]'}`} />
                  </div>
                </button>
              ))}

              <div className="my-1.5 border-t border-border" />

              {/* 매뉴얼 */}
              <button
                onClick={() => {
                  setShowManual(true)
                  setShowQuickMenu(false)
                }}
                className="w-full px-3 py-2 flex items-center gap-2.5 text-[12px] text-text-2 hover:bg-[rgba(255,255,255,0.06)] hover:text-text-1 transition-all"
              >
                <span className="text-[13px]">&#x1F4D6;</span> 사용자 매뉴얼
              </button>
            </div>
          )}
        </div>
      </div>

      {/* 사용자 매뉴얼 팝업 */}
      <UserManualPopup isOpen={showManual} onClose={() => setShowManual(false)} />
    </div>
  )
}