import { useEffect, useState, useRef, useCallback } from 'react'
import { useGesture } from '@use-gesture/react'
import {
  X,
  ChevronLeft,
  ChevronRight,
  Download,
  Copy,
  ZoomIn,
  ZoomOut,
  Maximize,
  Minimize,
  Play,
  ChevronDown,
  HardDrive,
  Calendar,
  CalendarClock,
  Image as ImageIcon,
  Eye,
  Pencil,
  Film,
  Clock,
  RotateCcw,
} from 'lucide-react'
import { formatBytes, formatDate, formatPlatformName } from '../lib/utils'
import { notificationManager } from '../lib/notificationManager'

// Helper to format video duration
const formatDuration = (seconds: number): string => {
  if (!seconds || seconds <= 0) return ''
  const h = Math.floor(seconds / 3600)
  const m = Math.floor((seconds % 3600) / 60)
  const s = Math.floor(seconds % 60)
  if (h > 0) return `${h}:${m.toString().padStart(2, '0')}:${s.toString().padStart(2, '0')}`
  return `${m}:${s.toString().padStart(2, '0')}`
}

// Helper to format resolution - uses shorter dimension for accurate labeling
// A 720x1280 portrait video is 720p, a 1920x1080 landscape video is 1080p
const formatResolution = (width: number, height: number): string => {
  if (!width || !height) return ''
  // Use the shorter dimension for resolution label (handles portrait videos correctly)
  const shortSide = Math.min(width, height)
  if (shortSide >= 2160) return '4K'
  if (shortSide >= 1440) return '1440p'
  if (shortSide >= 1080) return '1080p'
  if (shortSide >= 720) return '720p'
  if (shortSide >= 480) return '480p'
  if (shortSide >= 360) return '360p'
  return `${shortSide}p`
}

interface EnhancedLightboxProps {
  items: any[]
  currentIndex: number
  onClose: () => void
  onNavigate: (index: number) => void
  onDelete?: (item: any) => void
  onEditDate?: (item: any) => void
  getPreviewUrl: (item: any) => string
  getThumbnailUrl: (item: any) => string
  isVideo: (item: any) => boolean
  renderActions?: (item: any) => React.ReactNode
  hideFaceRecognition?: boolean
}

export default function EnhancedLightbox({
  items,
  currentIndex,
  onClose,
  onNavigate,
  onDelete,
  onEditDate,
  getPreviewUrl,
  getThumbnailUrl,
  isVideo,
  renderActions,
  hideFaceRecognition = false,
}: EnhancedLightboxProps) {
  const currentItem = items[currentIndex]
  const [zoom, setZoom] = useState(1)
  const [pan, setPan] = useState({ x: 0, y: 0 })
  const [isPanning, setIsPanning] = useState(false)
  const [panStart, setPanStart] = useState({ x: 0, y: 0 })
  const [isFullscreen, setIsFullscreen] = useState(false)
  const [showMetadata, setShowMetadata] = useState(false)

  // Embedded file metadata (from ffprobe/exiftool)
  const [embeddedMetadata, setEmbeddedMetadata] = useState<{
    title?: string | null
    artist?: string | null
    description?: string | null
    comment?: string | null
    date?: string | null
    source?: string | null
  } | null>(null)
  const [embeddedMetadataLoading, setEmbeddedMetadataLoading] = useState(false)

  // Loading states
  const [imageLoading, setImageLoading] = useState(true)
  const [imageError, setImageError] = useState(false)
  const [preloadedImages, setPreloadedImages] = useState<Set<number>>(new Set())

  // Image dimensions for accurate zoom percentage calculation
  const [naturalSize, setNaturalSize] = useState<{ width: number; height: number } | null>(null)
  const [displayedSize, setDisplayedSize] = useState<{ width: number; height: number } | null>(null)

  // Calculate max zoom to allow reaching 100% of original image (plus 50% extra for zooming beyond)
  // If image is displayed at 25% of original, maxZoom = 4 to reach 100%, then *1.5 = 6 for extra zoom
  const maxZoom = naturalSize && displayedSize
    ? Math.max(5, Math.ceil((naturalSize.width / displayedSize.width) * 1.5))
    : 5

  const containerRef = useRef<HTMLDivElement>(null)
  const imageRef = useRef<HTMLImageElement>(null)
  const videoRef = useRef<HTMLVideoElement>(null)
  const thumbnailStripRef = useRef<HTMLDivElement>(null)

  // Preload adjacent images
  useEffect(() => {
    const preloadImage = (index: number) => {
      if (index < 0 || index >= items.length || preloadedImages.has(index)) return
      if (isVideo(items[index])) return

      const img = new Image()
      img.src = getPreviewUrl(items[index])
      img.onload = () => {
        setPreloadedImages(prev => new Set([...prev, index]))
      }
    }

    // Preload next and previous images
    preloadImage(currentIndex + 1)
    preloadImage(currentIndex - 1)
  }, [currentIndex, items, getPreviewUrl, isVideo, preloadedImages])

  // Fetch embedded metadata when item changes (only when metadata panel is shown)
  useEffect(() => {
    if (!showMetadata || !currentItem?.file_path) {
      setEmbeddedMetadata(null)
      return
    }

    const fetchEmbeddedMetadata = async () => {
      setEmbeddedMetadataLoading(true)
      try {
        const response = await fetch(
          `/api/media/embedded-metadata?file_path=${encodeURIComponent(currentItem.file_path)}`,
          { credentials: 'include' }
        )
        if (response.ok) {
          const data = await response.json()
          // Only set if we got meaningful data
          if (data.title || data.artist || data.description || data.comment) {
            setEmbeddedMetadata(data)
          } else {
            setEmbeddedMetadata(null)
          }
        }
      } catch (error) {
        console.error('Failed to fetch embedded metadata:', error)
        setEmbeddedMetadata(null)
      } finally {
        setEmbeddedMetadataLoading(false)
      }
    }

    fetchEmbeddedMetadata()
  }, [currentItem?.file_path, showMetadata])

  // Keyboard shortcuts
  useEffect(() => {
    const handleKeyDown = (e: KeyboardEvent) => {
      // Ignore if user is typing in an input
      if (e.target instanceof HTMLInputElement || e.target instanceof HTMLTextAreaElement) return

      switch (e.key) {
        case 'ArrowLeft':
          e.preventDefault()
          if (currentIndex > 0) onNavigate(currentIndex - 1)
          break
        case 'ArrowRight':
          e.preventDefault()
          if (currentIndex < items.length - 1) onNavigate(currentIndex + 1)
          break
        case 'Escape':
          e.preventDefault()
          onClose()
          break
        case 'Delete':
          e.preventDefault()
          if (onDelete && confirm(`Delete ${currentItem.filename || currentItem.original_filename}?`)) {
            onDelete(currentItem)
          }
          break
        case 'f':
        case 'F':
          e.preventDefault()
          toggleFullscreen()
          break
        case '+':
        case '=':
          e.preventDefault()
          setZoom(z => Math.min(z + 0.5, maxZoom))
          break
        case '-':
        case '_':
          e.preventDefault()
          setZoom(z => Math.max(z - 0.5, 1))
          break
        case '0':
          e.preventDefault()
          setZoom(1)
          setPan({ x: 0, y: 0 })
          break
        case '1':
          // Jump to 100% actual size
          e.preventDefault()
          if (naturalSize && displayedSize) {
            const zoomFor100 = naturalSize.width / displayedSize.width
            setZoom(zoomFor100)
          }
          break
      }
    }

    window.addEventListener('keydown', handleKeyDown)
    return () => window.removeEventListener('keydown', handleKeyDown)
  }, [currentIndex, items.length, onNavigate, onClose, onDelete, currentItem, isVideo, maxZoom, naturalSize, displayedSize])

  // Reset zoom/pan when changing items
  useEffect(() => {
    setZoom(1)
    setPan({ x: 0, y: 0 })
    setImageLoading(true)
    setImageError(false)
    setNaturalSize(null)
    setDisplayedSize(null)
  }, [currentIndex])

  // Check if image is already loaded (cached) - onLoad might not fire for cached images
  useEffect(() => {
    if (imageRef.current && !isVideo(currentItem)) {
      if (imageRef.current.complete && imageRef.current.naturalHeight !== 0) {
        // Image is already loaded from cache
        setImageLoading(false)
        setImageError(false)
        // Capture dimensions for cached images
        setNaturalSize({ width: imageRef.current.naturalWidth, height: imageRef.current.naturalHeight })
        setDisplayedSize({ width: imageRef.current.clientWidth, height: imageRef.current.clientHeight })
      }
    }
  }, [currentIndex, currentItem, isVideo])

  // Mouse wheel zoom
  const handleWheel = useCallback((e: WheelEvent) => {
    if (e.ctrlKey || e.metaKey) {
      e.preventDefault()
      const delta = e.deltaY > 0 ? -0.2 : 0.2
      setZoom(z => Math.max(1, Math.min(maxZoom, z + delta)))
    }
  }, [maxZoom])

  useEffect(() => {
    const container = containerRef.current
    if (container) {
      container.addEventListener('wheel', handleWheel, { passive: false })
      return () => container.removeEventListener('wheel', handleWheel)
    }
  }, [handleWheel])

  // Pan handling
  const handleMouseDown = (e: React.MouseEvent) => {
    if (zoom > 1 && !isVideo(currentItem)) {
      setIsPanning(true)
      setPanStart({ x: e.clientX - pan.x, y: e.clientY - pan.y })
    }
  }

  const handleMouseMove = (e: React.MouseEvent) => {
    if (isPanning) {
      setPan({
        x: e.clientX - panStart.x,
        y: e.clientY - panStart.y,
      })
    }
  }

  const handleMouseUp = () => {
    setIsPanning(false)
  }

  // Refs for direct DOM manipulation during gestures (avoids React re-renders)
  const gestureZoomRef = useRef(zoom)
  const gesturePanRef = useRef(pan)

  // Keep refs in sync when state changes from other sources (buttons, reset)
  useEffect(() => {
    gestureZoomRef.current = zoom
    gesturePanRef.current = pan
  }, [zoom, pan])

  // Gesture handling with @use-gesture/react for smooth pinch-to-zoom
  useGesture(
    {
      onPinch: ({ offset: [scale], last }) => {
        if (isVideo(currentItem)) return
        const newZoom = Math.max(1, Math.min(maxZoom, scale))
        gestureZoomRef.current = newZoom

        // Direct DOM update during gesture
        if (imageRef.current) {
          const p = gesturePanRef.current
          imageRef.current.style.transform = `scale3d(${newZoom}, ${newZoom}, 1) translate3d(${p.x / newZoom}px, ${p.y / newZoom}px, 0)`
        }

        // Sync to React state only on gesture end
        if (last) {
          setZoom(newZoom)
        }
      },
      onDrag: ({ offset: [x, y], pinching, last }) => {
        if (isVideo(currentItem) || pinching) return
        const currentZoom = gestureZoomRef.current
        if (currentZoom <= 1) return

        gesturePanRef.current = { x, y }

        // Direct DOM update during gesture
        if (imageRef.current) {
          imageRef.current.style.transform = `scale3d(${currentZoom}, ${currentZoom}, 1) translate3d(${x / currentZoom}px, ${y / currentZoom}px, 0)`
        }

        // Sync to React state only on gesture end
        if (last) {
          setPan({ x, y })
        }
      },
    },
    {
      target: imageRef,
      eventOptions: { passive: false },
      pinch: {
        scaleBounds: { min: 1, max: maxZoom },
        rubberband: true,
      },
      drag: {
        from: () => [gesturePanRef.current.x, gesturePanRef.current.y],
      },
    }
  )

  // Toggle fullscreen
  const toggleFullscreen = () => {
    if (!document.fullscreenElement) {
      containerRef.current?.requestFullscreen()
      setIsFullscreen(true)
    } else {
      document.exitFullscreen()
      setIsFullscreen(false)
    }
  }

  // Quick actions
  const handleDownload = async () => {
    try {
      const url = getPreviewUrl(currentItem)
      const filename = currentItem.filename || currentItem.original_filename
      const response = await fetch(url)
      const blob = await response.blob()
      const downloadUrl = window.URL.createObjectURL(blob)
      const a = document.createElement('a')
      a.href = downloadUrl
      a.download = filename
      document.body.appendChild(a)
      a.click()
      document.body.removeChild(a)
      window.URL.revokeObjectURL(downloadUrl)
      notificationManager.success('Download', 'File downloaded successfully', '📥')
    } catch (error) {
      notificationManager.error('Download Failed', 'Failed to download file', '❌')
    }
  }

  const handleCopyPath = () => {
    const path = currentItem.file_path || currentItem.original_file_path
    navigator.clipboard.writeText(path)
    notificationManager.success('Copied', 'File path copied to clipboard', '📋')
  }

  // Scroll thumbnail into view
  useEffect(() => {
    const thumbnailStrip = thumbnailStripRef.current
    if (thumbnailStrip) {
      const thumbnail = thumbnailStrip.children[currentIndex] as HTMLElement
      if (thumbnail) {
        thumbnail.scrollIntoView({ behavior: 'smooth', block: 'nearest', inline: 'center' })
      }
    }
  }, [currentIndex])

  return (
    <div
      ref={containerRef}
      className="fixed inset-0 bg-black/90 z-50 flex flex-col"
      style={{
        touchAction: 'none',
        // Safe area insets for iPhone notch
        paddingTop: 'env(safe-area-inset-top)',
        paddingBottom: 'env(safe-area-inset-bottom)',
        paddingLeft: 'env(safe-area-inset-left)',
        paddingRight: 'env(safe-area-inset-right)',
      }}
      onClick={onClose}
      onMouseMove={handleMouseMove}
      onMouseUp={handleMouseUp}
      onMouseLeave={handleMouseUp}
    >
      {/* Top Bar - with safe area offset */}
      <div
        className="absolute left-0 right-0 bg-gradient-to-b from-black/80 to-transparent p-4 z-10"
        style={{ top: 'env(safe-area-inset-top, 0px)' }}
        onClick={(e) => e.stopPropagation()}
      >
        <div className="flex items-center justify-between max-w-7xl mx-auto">
          {/* Title */}
          <div className="flex-1 min-w-0 text-white">
            <h3 className="text-lg font-medium truncate">
              {currentItem.filename || currentItem.original_filename}
            </h3>
            <p className="text-sm text-white/70">
              {currentIndex + 1} / {items.length}
            </p>
          </div>

          {/* Quick Actions */}
          <div className="flex items-center gap-1 ml-2 sm:ml-4 flex-shrink-0">
            <button
              type="button"
              style={{ touchAction: 'manipulation', WebkitTapHighlightColor: 'transparent' }}
              onPointerUp={(e) => { e.stopPropagation(); e.preventDefault(); handleDownload() }}
              onClick={(e) => { e.stopPropagation(); handleDownload() }}
              className="p-2.5 hover:bg-white/20 rounded-lg transition-colors min-w-[44px] min-h-[44px] flex items-center justify-center"
              title="Download (D)"
            >
              <Download className="w-5 h-5 text-white" />
            </button>
            <button
              type="button"
              style={{ touchAction: 'manipulation', WebkitTapHighlightColor: 'transparent' }}
              onPointerUp={(e) => { e.stopPropagation(); e.preventDefault(); handleCopyPath() }}
              onClick={(e) => { e.stopPropagation(); handleCopyPath() }}
              className="hidden sm:flex p-2.5 hover:bg-white/20 rounded-lg transition-colors min-w-[44px] min-h-[44px] items-center justify-center"
              title="Copy Path"
            >
              <Copy className="w-5 h-5 text-white" />
            </button>
            {/* Zoom controls - hidden on mobile, use pinch-to-zoom instead */}
            {!isVideo(currentItem) && (
              <>
                <button
                  type="button"
                  style={{ touchAction: 'manipulation', WebkitTapHighlightColor: 'transparent' }}
                  onPointerUp={(e) => { e.stopPropagation(); e.preventDefault(); setZoom(z => Math.max(1, z - 0.5)) }}
                  onClick={(e) => { e.stopPropagation(); setZoom(z => Math.max(1, z - 0.5)) }}
                  disabled={zoom <= 1}
                  className="hidden sm:flex p-2.5 hover:bg-white/20 rounded-lg transition-colors disabled:opacity-50 min-w-[44px] min-h-[44px] items-center justify-center"
                  title="Zoom Out (-)"
                >
                  <ZoomOut className="w-5 h-5 text-white" />
                </button>
                <button
                  type="button"
                  style={{ touchAction: 'manipulation', WebkitTapHighlightColor: 'transparent' }}
                  onPointerUp={(e) => { e.stopPropagation(); e.preventDefault(); setZoom(z => Math.min(maxZoom, z + 0.5)) }}
                  onClick={(e) => { e.stopPropagation(); setZoom(z => Math.min(maxZoom, z + 0.5)) }}
                  disabled={zoom >= maxZoom}
                  className="hidden sm:flex p-2.5 hover:bg-white/20 rounded-lg transition-colors disabled:opacity-50 min-w-[44px] min-h-[44px] items-center justify-center"
                  title="Zoom In (+)"
                >
                  <ZoomIn className="w-5 h-5 text-white" />
                </button>
                {/* Current zoom percentage */}
                <span className="hidden sm:block text-white text-sm min-w-[3rem] text-center">
                  {naturalSize && displayedSize
                    ? `${Math.round((displayedSize.width / naturalSize.width) * zoom * 100)}%`
                    : `${Math.round(zoom * 100)}%`}
                </span>
                {/* 100% button */}
                <button
                  type="button"
                  style={{ touchAction: 'manipulation', WebkitTapHighlightColor: 'transparent' }}
                  onPointerUp={(e) => {
                    e.stopPropagation()
                    e.preventDefault()
                    if (naturalSize && displayedSize) {
                      setZoom(naturalSize.width / displayedSize.width)
                    }
                  }}
                  onClick={(e) => {
                    e.stopPropagation()
                    if (naturalSize && displayedSize) {
                      setZoom(naturalSize.width / displayedSize.width)
                    }
                  }}
                  disabled={!naturalSize || !displayedSize || Math.abs((displayedSize.width / naturalSize.width) * zoom - 1) < 0.01}
                  className="hidden sm:block px-2 py-1 hover:bg-white/20 rounded-lg transition-colors disabled:opacity-50 text-white text-sm font-medium"
                  title="Actual Size (1)"
                >
                  100%
                </button>
                <button
                  type="button"
                  style={{ touchAction: 'manipulation', WebkitTapHighlightColor: 'transparent' }}
                  onPointerUp={(e) => { e.stopPropagation(); e.preventDefault(); setZoom(1); setPan({ x: 0, y: 0 }) }}
                  onClick={(e) => { e.stopPropagation(); setZoom(1); setPan({ x: 0, y: 0 }) }}
                  disabled={zoom === 1 && pan.x === 0 && pan.y === 0}
                  className="hidden sm:flex p-2.5 hover:bg-white/20 rounded-lg transition-colors disabled:opacity-50 min-w-[44px] min-h-[44px] items-center justify-center"
                  title="Reset View (0)"
                >
                  <RotateCcw className="w-5 h-5 text-white" />
                </button>
              </>
            )}
            <button
              type="button"
              style={{ touchAction: 'manipulation', WebkitTapHighlightColor: 'transparent' }}
              onPointerUp={(e) => { e.stopPropagation(); e.preventDefault(); toggleFullscreen() }}
              onClick={(e) => { e.stopPropagation(); toggleFullscreen() }}
              className="p-2.5 hover:bg-white/20 rounded-lg transition-colors min-w-[44px] min-h-[44px] flex items-center justify-center"
              title="Fullscreen (F)"
            >
              {isFullscreen ? (
                <Minimize className="w-5 h-5 text-white" />
              ) : (
                <Maximize className="w-5 h-5 text-white" />
              )}
            </button>
            <button
              type="button"
              style={{ touchAction: 'manipulation', WebkitTapHighlightColor: 'transparent' }}
              onPointerUp={(e) => {
                e.stopPropagation()
                e.preventDefault()
                onClose()
              }}
              onClick={(e) => {
                e.stopPropagation()
                e.preventDefault()
                onClose()
              }}
              className="p-2.5 hover:bg-white/20 rounded-lg transition-colors min-w-[44px] min-h-[44px] flex items-center justify-center"
              title="Close (Esc)"
            >
              <X className="w-6 h-6 text-white" />
            </button>
          </div>
        </div>
      </div>

      {/* Navigation Buttons */}
      <button
        type="button"
        style={{ touchAction: 'manipulation', WebkitTapHighlightColor: 'transparent' }}
        onClick={(e) => {
          e.stopPropagation()
          e.preventDefault()
          if (currentIndex > 0) onNavigate(currentIndex - 1)
        }}
        disabled={currentIndex === 0}
        className="absolute left-4 top-1/2 -translate-y-1/2 p-2 bg-black/30 hover:bg-black/50 rounded-full text-white disabled:opacity-30 transition-colors z-10 min-w-[48px] min-h-[48px] flex items-center justify-center"
        title="Previous (←)"
      >
        <ChevronLeft className="w-7 h-7" />
      </button>

      <button
        type="button"
        style={{ touchAction: 'manipulation', WebkitTapHighlightColor: 'transparent' }}
        onClick={(e) => {
          e.stopPropagation()
          e.preventDefault()
          if (currentIndex < items.length - 1) onNavigate(currentIndex + 1)
        }}
        disabled={currentIndex === items.length - 1}
        className="absolute right-4 top-1/2 -translate-y-1/2 p-2 bg-black/30 hover:bg-black/50 rounded-full text-white disabled:opacity-30 transition-colors z-10 min-w-[48px] min-h-[48px] flex items-center justify-center"
        title="Next (→)"
      >
        <ChevronRight className="w-7 h-7" />
      </button>

      {/* Main Content Area */}
      <div className="flex-1 flex items-center justify-center p-2 sm:p-4 pt-16 sm:pt-20 pb-32 sm:pb-40" onClick={(e) => e.stopPropagation()}>
        {isVideo(currentItem) ? (
          <div className="relative flex flex-col items-center justify-center" style={{ touchAction: 'auto' }}>
            {/* Video Player */}
            <div className="relative bg-black rounded-xl overflow-hidden shadow-2xl" style={{ touchAction: 'auto' }}>
              <video
                ref={videoRef}
                key={getPreviewUrl(currentItem)}
                src={getPreviewUrl(currentItem)}
                className="max-w-[90vw] max-h-[70vh] w-auto h-auto"
                controls
                autoPlay
                playsInline
                preload="auto"
                // @ts-ignore - AirPlay attributes
                x-webkit-airplay="allow"
                airplay="allow"
                onLoadStart={() => setImageLoading(true)}
                onLoadedData={() => {
                  setImageLoading(false)
                  // Try to play unmuted first, if blocked by browser, try muted
                  if (videoRef.current) {
                    videoRef.current.play().catch(() => {
                      // Autoplay blocked - try muted (works on iOS)
                      if (videoRef.current) {
                        videoRef.current.muted = true
                        videoRef.current.play().catch(() => {
                          // Still blocked - give up, user can tap play
                        })
                      }
                    })
                  }
                }}
                onCanPlay={() => setImageLoading(false)}
                onError={(e) => {
                  console.error('Video load error:', e)
                  setImageLoading(false)
                }}
              />
            </div>

            {/* Video Info Bar */}
            <div className="mt-2 sm:mt-4 flex flex-wrap items-center gap-2 sm:gap-4 text-white/80 text-xs sm:text-sm">
              {/* Channel/Source */}
              {currentItem.source && (
                <span className="flex items-center gap-1">
                  <Film className="w-3 h-3 sm:w-4 sm:h-4" />
                  {currentItem.source}
                </span>
              )}
              {/* Duration */}
              {(currentItem.duration || currentItem.metadata?.duration) && (currentItem.duration > 0 || currentItem.metadata?.duration > 0) && (
                <span className="flex items-center gap-1">
                  <Clock className="w-3 h-3 sm:w-4 sm:h-4" />
                  {formatDuration(currentItem.duration || currentItem.metadata?.duration)}
                </span>
              )}
              {/* File Size */}
              {currentItem.file_size && (
                <span className="flex items-center gap-1">
                  <HardDrive className="w-3 h-3 sm:w-4 sm:h-4" />
                  {formatBytes(currentItem.file_size)}
                </span>
              )}
              {/* Date */}
              {(currentItem.post_date || currentItem.download_date) && (
                <span className="flex items-center gap-1">
                  <Calendar className="w-3 h-3 sm:w-4 sm:h-4" />
                  {formatDate(currentItem.post_date || currentItem.download_date)}
                </span>
              )}
              {/* Resolution */}
              {(currentItem.width && currentItem.height) && (
                <span className="flex items-center gap-1 text-emerald-400 font-medium">
                  <Film className="w-3 h-3 sm:w-4 sm:h-4" />
                  {formatResolution(currentItem.width, currentItem.height)}
                </span>
              )}
              {/* Platform - right aligned */}
              {currentItem.platform && (
                <>
                  <div className="hidden sm:block flex-1" />
                  <span className="text-indigo-400 font-medium">
                    {formatPlatformName(currentItem.platform)}
                  </span>
                </>
              )}
            </div>
          </div>
        ) : (
          <div className="relative flex flex-col items-center justify-center">
            <div
              className="relative"
              onMouseDown={handleMouseDown}
              style={{
                touchAction: 'none',
              }}
            >
              {imageLoading && (
                <div className="absolute inset-0 flex items-center justify-center">
                  <div className="w-12 h-12 border-4 border-white/30 border-t-white rounded-full animate-spin" />
                </div>
              )}
              {imageError ? (
                <div className="text-white text-center">
                  <p className="mb-4">Failed to load image</p>
                  <button
                    onClick={() => {
                      setImageError(false)
                      setImageLoading(true)
                    }}
                    className="px-4 py-2 bg-white/20 hover:bg-white/30 rounded transition-colors"
                  >
                    Retry
                  </button>
                </div>
              ) : (
                <img
                  ref={imageRef}
                  key={getPreviewUrl(currentItem)}
                  src={getPreviewUrl(currentItem)}
                  alt={currentItem.filename || currentItem.original_filename}
                  className="max-w-full max-h-[65vh] object-contain rounded-lg select-none"
                  style={{
                    transform: `scale3d(${zoom}, ${zoom}, 1) translate3d(${pan.x / zoom}px, ${pan.y / zoom}px, 0)`,
                    transformOrigin: 'center',
                    opacity: imageLoading ? 0 : 1,
                    transition: 'opacity 0.2s',
                    WebkitTouchCallout: 'none',
                    WebkitUserSelect: 'none',
                    userSelect: 'none',
                  } as React.CSSProperties}
                  onLoad={(e) => {
                    setImageLoading(false)
                    const img = e.target as HTMLImageElement
                    setNaturalSize({ width: img.naturalWidth, height: img.naturalHeight })
                    setDisplayedSize({ width: img.clientWidth, height: img.clientHeight })
                  }}
                  onError={() => {
                    setImageLoading(false)
                    setImageError(true)
                  }}
                  draggable={false}
                />
              )}
            </div>

            {/* Image Info Bar */}
            <div className="mt-2 sm:mt-4 flex flex-wrap items-center gap-2 sm:gap-4 text-white/80 text-xs sm:text-sm">
              {/* Channel/Source */}
              {currentItem.source && (
                <span className="flex items-center gap-1">
                  <Film className="w-3 h-3 sm:w-4 sm:h-4" />
                  {currentItem.source}
                </span>
              )}
              {/* File Size */}
              {currentItem.file_size && (
                <span className="flex items-center gap-1">
                  <HardDrive className="w-3 h-3 sm:w-4 sm:h-4" />
                  {formatBytes(currentItem.file_size)}
                </span>
              )}
              {/* Date */}
              {(currentItem.post_date || currentItem.download_date) && (
                <span className="flex items-center gap-1">
                  <Calendar className="w-3 h-3 sm:w-4 sm:h-4" />
                  {formatDate(currentItem.post_date || currentItem.download_date)}
                </span>
              )}
              {/* Resolution */}
              {(currentItem.width && currentItem.height) && (
                <span className="flex items-center gap-1 text-emerald-400 font-medium">
                  <Film className="w-3 h-3 sm:w-4 sm:h-4" />
                  {formatResolution(currentItem.width, currentItem.height)}
                </span>
              )}
              {/* Platform - right aligned */}
              {currentItem.platform && (
                <>
                  <div className="hidden sm:block flex-1" />
                  <span className="text-indigo-400 font-medium">
                    {formatPlatformName(currentItem.platform)}
                  </span>
                </>
              )}
            </div>
          </div>
        )}
      </div>

      {/* Metadata Panel Card */}
      <div
        className={`absolute right-6 bottom-32 w-80 transition-all duration-300 ease-in-out ${
          showMetadata ? 'translate-x-0 opacity-100' : 'translate-x-[110%] opacity-0'
        }`}
        style={{ top: 'calc(env(safe-area-inset-top, 0px) + 6rem)' }}
        onClick={(e) => e.stopPropagation()}
      >
        <div className="h-full bg-gradient-to-br from-gray-900/95 to-black/95 backdrop-blur-xl rounded-2xl border border-white/30 shadow-[0_20px_60px_rgba(0,0,0,0.8)] overflow-hidden">
          <div className="p-6 h-full overflow-y-auto">
            <div className="flex items-center justify-between mb-6 pb-4 border-b border-white/20">
              <h3 className="text-white font-semibold text-lg">Details</h3>
            </div>

          <div className="space-y-3 text-sm">
            {/* Embedded Metadata Section */}
            {embeddedMetadataLoading && (
              <div className="text-white/40 text-xs italic">Loading metadata...</div>
            )}

            {embeddedMetadata?.title && (
              <div>
                <div className="text-white/60 mb-1 flex items-center gap-2">
                  <Film className="w-4 h-4" />
                  Title
                </div>
                <div className="text-white">
                  {embeddedMetadata.title}
                </div>
              </div>
            )}

            {embeddedMetadata?.description && (
              <div>
                <div className="text-white/60 mb-1">Description</div>
                <div className="text-white text-xs max-h-24 overflow-y-auto whitespace-pre-wrap">
                  {embeddedMetadata.description}
                </div>
              </div>
            )}

            {/* Post content/description from item (e.g., paid content posts) */}
            {(currentItem.description || currentItem.post_content) && !embeddedMetadata?.description && (
              <div>
                <div className="text-white/60 mb-1">Post Content</div>
                <div className="text-white text-xs max-h-32 overflow-y-auto whitespace-pre-wrap">
                  {currentItem.description || currentItem.post_content}
                </div>
              </div>
            )}

            {(embeddedMetadata && (embeddedMetadata.title || embeddedMetadata.description)) || currentItem.description || currentItem.post_content ? (
              <div className="border-t border-white/10 pt-3 mt-3" />
            ) : null}

            <div>
              <div className="text-white/60 mb-1 flex items-center gap-2">
                <ImageIcon className="w-4 h-4" />
                Filename
              </div>
              <div className="text-white break-all">
                {currentItem.filename || currentItem.original_filename}
              </div>
            </div>

            {(currentItem.width || currentItem.height || naturalSize) && (
              <div>
                <div className="text-white/60 mb-1 flex items-center gap-2">
                  <ImageIcon className="w-4 h-4" />
                  Resolution
                </div>
                <div className="text-white">
                  {currentItem.width && currentItem.height
                    ? `${currentItem.width} x ${currentItem.height}`
                    : naturalSize
                      ? `${naturalSize.width} x ${naturalSize.height}`
                      : 'Loading...'}
                </div>
              </div>
            )}

            {currentItem.file_size && currentItem.file_size > 0 && (
              <div>
                <div className="text-white/60 mb-1 flex items-center gap-2">
                  <HardDrive className="w-4 h-4" />
                  Size
                </div>
                <div className="text-white">
                  {formatBytes(currentItem.file_size)}
                </div>
              </div>
            )}

            {currentItem.post_date && (
              <div>
                <div className="text-white/60 mb-1 flex items-center gap-2">
                  <CalendarClock className="w-4 h-4" />
                  Post Date
                  {onEditDate && (
                    <button
                      onClick={() => onEditDate(currentItem)}
                      className="ml-auto p-1 hover:bg-white/20 rounded transition-colors"
                      title="Edit Post Date"
                    >
                      <Pencil className="w-3.5 h-3.5 text-amber-400" />
                    </button>
                  )}
                </div>
                <div className="text-white">
                  {formatDate(currentItem.post_date)}
                </div>
              </div>
            )}

            <div>
              <div className="text-white/60 mb-1 flex items-center gap-2">
                <Calendar className="w-4 h-4" />
                Download Date
              </div>
              <div className="text-white">
                {formatDate(currentItem.download_date || currentItem.added_date || currentItem.deleted_at)}
              </div>
            </div>

            {currentItem.platform && (
              <div>
                <div className="text-white/60 mb-1">Platform</div>
                <div className="text-white">{formatPlatformName(currentItem.platform)}</div>
              </div>
            )}

            {currentItem.post_id && (
              <div>
                <div className="text-white/60 mb-1">Post ID</div>
                <div className="text-white font-mono">{currentItem.post_id}</div>
              </div>
            )}

            {currentItem.source && (
              <div>
                <div className="text-white/60 mb-1">Source</div>
                <div className="text-white">{currentItem.source}</div>
              </div>
            )}

            {currentItem.file_path && (
              <div>
                <div className="text-white/60 mb-1">Path</div>
                <div className="text-white text-xs break-all font-mono">
                  {currentItem.file_path}
                </div>
              </div>
            )}

            {currentItem.deleted_from && (
              <div>
                <div className="text-white/60 mb-1">Deleted From</div>
                <div className="text-white">
                  <span className={`inline-flex items-center px-2.5 py-0.5 rounded-full text-xs font-medium ${
                    currentItem.deleted_from === 'media' ? 'bg-blue-500/20 text-blue-300 border border-blue-400/30' :
                    currentItem.deleted_from === 'review' ? 'bg-yellow-500/20 text-yellow-300 border border-yellow-400/30' :
                    currentItem.deleted_from === 'instagram_perceptual_duplicate_detection' ? 'bg-red-500/20 text-red-300 border border-red-400/30' :
                    'bg-purple-500/20 text-purple-300 border border-purple-400/30'
                  }`}>
                    {currentItem.deleted_from === 'instagram_perceptual_duplicate_detection'
                      ? 'Perceptual Duplicate'
                      : currentItem.deleted_from.charAt(0).toUpperCase() + currentItem.deleted_from.slice(1)}
                  </span>
                </div>
              </div>
            )}

            {!hideFaceRecognition && currentItem.face_recognition && (
              <div>
                <div className="text-white/60 mb-1 flex items-center gap-2">
                  <Eye className="w-4 h-4" />
                  Face Recognition
                </div>
                <div className="text-white">
                  {currentItem.face_recognition.matched ? (
                    <span className="text-green-400">
                      Matched: {currentItem.face_recognition.person_name}
                      {currentItem.face_recognition.confidence && (
                        <span className="text-white/60 ml-2">
                          ({Math.round(currentItem.face_recognition.confidence * 100)}%)
                        </span>
                      )}
                    </span>
                  ) : (
                    <span className="text-red-400">
                      {currentItem.face_recognition.confidence && currentItem.face_recognition.confidence > 0 ? (
                        <>No match ({Math.round(currentItem.face_recognition.confidence * 100)}%)</>
                      ) : (
                        'No match'
                      )}
                    </span>
                  )}
                </div>
              </div>
            )}
          </div>
        </div>
        </div>
      </div>

      {/* Metadata Toggle Button */}
      <button
        onClick={(e) => {
          e.stopPropagation()
          setShowMetadata(!showMetadata)
        }}
        style={{ top: 'calc(env(safe-area-inset-top, 0px) + 6rem)' }}
        className="absolute right-4 p-3 bg-black/30 hover:bg-black/50 rounded-lg text-white transition-colors z-10 min-w-[44px] min-h-[44px] flex items-center justify-center"
        title="Toggle Metadata"
      >
        {showMetadata ? (
          <ChevronRight className="w-5 h-5" />
        ) : (
          <ChevronDown className="w-5 h-5 rotate-90" />
        )}
      </button>

      {/* Action Buttons */}
      {renderActions && (
        <div className="absolute bottom-28 left-1/2 -translate-x-1/2 flex items-center gap-3">
          {renderActions(currentItem)}
        </div>
      )}

      {/* Thumbnail Navigation Strip */}
      <div
        className="absolute left-0 right-0 bg-gradient-to-t from-black/90 to-transparent p-4 pt-8"
        style={{ bottom: 'env(safe-area-inset-bottom, 0px)' }}
        onClick={(e) => e.stopPropagation()}
      >
        <div
          ref={thumbnailStripRef}
          className="flex gap-2 overflow-x-auto overflow-y-visible scrollbar-thin scrollbar-thumb-white/20 scrollbar-track-transparent pt-1 pb-2 px-1"
          style={{ scrollbarWidth: 'thin' }}
        >
          {items.map((item, index) => (
            <button
              key={index}
              onClick={() => onNavigate(index)}
              className={`relative flex-shrink-0 w-24 h-14 bg-slate-800 rounded-lg overflow-hidden transition-all ${
                index === currentIndex
                  ? 'ring-2 ring-red-500 opacity-100 scale-105'
                  : 'opacity-60 hover:opacity-100'
              }`}
              style={{ WebkitTouchCallout: 'none' } as React.CSSProperties}
            >
              <img
                src={getThumbnailUrl(item)}
                alt=""
                className="w-full h-full object-cover"
              />
              {isVideo(item) && (
                <div className="absolute inset-0 bg-black/30 flex items-center justify-center">
                  <Play className="w-4 h-4 text-white/80" />
                </div>
              )}
            </button>
          ))}
        </div>
      </div>
    </div>
  )
}
