'use client'

import { useEffect, useRef, useState } from 'react'
import TagSelector from '@/components/tags/TagSelector'
import { useUserSettings } from '@/hooks/useUserSettings'

interface Props {
  url: string
  name: string
  onClose: () => void
  onPrev?: () => void
  onNext?: () => void
  itemKey?: string
  onTagsChanged?: () => void
  onAiTag?: () => Promise<void>
  context?: 'mixed' | 'movies' | 'tv'
}

export default function VideoPlayerModal({ url, name, onClose, onPrev, onNext, itemKey, onTagsChanged, onAiTag, context = 'mixed' }: Props) {
  const settings = useUserSettings()
  const autoPlay = context === 'mixed' ? settings.mixedAutoplay : context === 'movies' ? settings.moviesAutoplay : settings.tvAutoplay
  const loop     = context === 'mixed' ? settings.mixedLoop     : context === 'movies' ? settings.moviesLoop     : settings.tvLoop
  const muted    = context === 'mixed' ? settings.mixedMuted    : context === 'movies' ? settings.moviesMuted    : settings.tvMuted
  const overlayRef = useRef<HTMLDivElement>(null)
  const [showTags, setShowTags] = useState(false)
  const [aiTagging, setAiTagging] = useState(false)
  const [aiTagError, setAiTagError] = useState<string | null>(null)
  const [tagRefreshKey, setTagRefreshKey] = useState(0)

  useEffect(() => {
    const handleKey = (e: KeyboardEvent) => {
      if (e.key === 'Escape') onClose()
      if (e.key === 'ArrowLeft') onPrev?.()
      if (e.key === 'ArrowRight') onNext?.()
    }
    document.addEventListener('keydown', handleKey)
    document.body.style.overflow = 'hidden'
    return () => {
      document.removeEventListener('keydown', handleKey)
      document.body.style.overflow = ''
    }
  }, [onClose, onPrev, onNext])

  const handleOverlayClick = (e: React.MouseEvent) => {
    if (e.target === overlayRef.current) onClose()
  }

  return (
    <div
      ref={overlayRef}
      className="fixed inset-0 z-50 flex flex-col items-center p-4 gap-3 overflow-hidden max-h-screen"
      style={{ backgroundColor: 'rgba(0,0,0,0.9)', height: '100vh', maxHeight: '100vh' }}
      onClick={handleOverlayClick}
    >
      {/* Toolbar */}
      <div className={`flex items-center justify-between w-full flex-shrink-0 ${showTags ? '' : 'max-w-4xl'}`}>
        <span className="text-sm truncate max-w-[80%]" style={{ color: 'var(--text-secondary)' }}>
          {name}
        </span>
        <div className="flex items-center gap-2 flex-shrink-0">
          {itemKey && (
            <button
              onClick={(e) => { e.stopPropagation(); setShowTags((v) => !v) }}
              className="w-8 h-8 rounded-full flex items-center justify-center text-sm transition-colors"
              style={{
                backgroundColor: showTags ? 'var(--accent)' : 'var(--surface)',
                color: showTags ? '#fff' : 'var(--text-primary)',
              }}
              onMouseEnter={(e) => {
                if (!showTags) (e.currentTarget as HTMLElement).style.backgroundColor = 'var(--surface-hover)'
              }}
              onMouseLeave={(e) => {
                if (!showTags) (e.currentTarget as HTMLElement).style.backgroundColor = 'var(--surface)'
              }}
              aria-label={showTags ? 'Hide tags' : 'Show tags'}
              title="Tags"
            >
              🏷
            </button>
          )}
          {onAiTag && (
            <button
              onClick={async (e) => {
                e.stopPropagation()
                setAiTagging(true)
                setAiTagError(null)
                try {
                  await onAiTag()
                  setTagRefreshKey((k) => k + 1)
                  onTagsChanged?.()
                } catch (err) {
                  setAiTagError(err instanceof Error ? err.message : 'AI tagging failed')
                  setTimeout(() => setAiTagError(null), 4000)
                } finally {
                  setAiTagging(false)
                }
              }}
              disabled={aiTagging}
              className="w-8 h-8 rounded-full flex items-center justify-center text-sm transition-colors disabled:opacity-50"
              style={{
                backgroundColor: aiTagError ? '#7f1d1d' : 'var(--surface)',
                color: aiTagError ? '#fca5a5' : 'var(--text-primary)',
              }}
              onMouseEnter={(e) => {
                if (!aiTagging && !aiTagError) (e.currentTarget as HTMLElement).style.backgroundColor = 'var(--surface-hover)'
              }}
              onMouseLeave={(e) => {
                if (!aiTagError) (e.currentTarget as HTMLElement).style.backgroundColor = 'var(--surface)'
              }}
              aria-label="AI Tag this video"
              title={aiTagError ?? (aiTagging ? 'Tagging…' : 'AI Tag')}
            >
              {aiTagging ? (
                <span className="animate-spin" style={{ display: 'inline-block' }}>⟳</span>
              ) : '✨'}
            </button>
          )}
          <button
            onClick={onClose}
            className="w-8 h-8 rounded-full flex items-center justify-center text-sm flex-shrink-0 transition-colors"
            style={{ backgroundColor: 'var(--surface)', color: 'var(--text-primary)' }}
            onMouseEnter={(e) => ((e.currentTarget as HTMLElement).style.backgroundColor = 'var(--surface-hover)')}
            onMouseLeave={(e) => ((e.currentTarget as HTMLElement).style.backgroundColor = 'var(--surface)')}
            aria-label="Close"
          >
            ✕
          </button>
        </div>
      </div>

      {showTags ? (
        <div className="flex gap-4 w-full flex-1 min-h-0 items-start overflow-hidden">
          {/* Video */}
          <div className="flex-1 min-w-0 min-h-0 flex items-center justify-center max-h-full relative">
            <video
              key={url}
              src={url}
              controls
              autoPlay={autoPlay}
              muted={muted}
              loop={loop}
              className="w-full h-full object-contain rounded-lg"
              style={{ backgroundColor: '#000' }}
              onClick={(e) => e.stopPropagation()}
            />
            {onPrev && (
              <button
                onClick={(e) => { e.stopPropagation(); onPrev() }}
                className="absolute left-2 top-1/2 -translate-y-1/2 w-12 h-12 rounded-full flex items-center justify-center text-lg transition-opacity hover:opacity-100 opacity-70"
                style={{ backgroundColor: 'rgba(0,0,0,0.4)', color: '#fff' }}
                aria-label="Previous"
              >
                ‹
              </button>
            )}
            {onNext && (
              <button
                onClick={(e) => { e.stopPropagation(); onNext() }}
                className="absolute right-2 top-1/2 -translate-y-1/2 w-12 h-12 rounded-full flex items-center justify-center text-lg transition-opacity hover:opacity-100 opacity-70"
                style={{ backgroundColor: 'rgba(0,0,0,0.4)', color: '#fff' }}
                aria-label="Next"
              >
                ›
              </button>
            )}
          </div>
          {/* Tag panel */}
          <div
            className="w-80 h-full max-h-full flex-shrink-0 rounded-xl overflow-y-auto p-4"
            style={{ backgroundColor: 'var(--surface)', border: '1px solid var(--border)' }}
            onClick={(e) => e.stopPropagation()}
          >
            <p className="text-xs font-semibold uppercase tracking-wider mb-3" style={{ color: 'var(--text-secondary)' }}>
              Tags
            </p>
            <TagSelector itemKey={itemKey!} onTagsChanged={onTagsChanged} refreshKey={tagRefreshKey} />
          </div>
        </div>
      ) : (
        <div className="w-full flex-1 min-h-0 flex items-center justify-center overflow-hidden max-h-full relative">
          <video
            key={url}
            src={url}
            controls
            autoPlay={autoPlay}
            muted={muted}
            loop={loop}
            className="w-full h-full max-w-4xl object-contain rounded-lg"
            style={{ backgroundColor: '#000' }}
            onClick={(e) => e.stopPropagation()}
          />
          {onPrev && (
            <button
              onClick={(e) => { e.stopPropagation(); onPrev() }}
              className="absolute left-2 top-1/2 -translate-y-1/2 w-12 h-12 rounded-full flex items-center justify-center text-lg transition-opacity hover:opacity-100 opacity-70"
              style={{ backgroundColor: 'rgba(0,0,0,0.4)', color: '#fff' }}
              aria-label="Previous"
            >
              ‹
            </button>
          )}
          {onNext && (
            <button
              onClick={(e) => { e.stopPropagation(); onNext() }}
              className="absolute right-2 top-1/2 -translate-y-1/2 w-12 h-12 rounded-full flex items-center justify-center text-lg transition-opacity hover:opacity-100 opacity-70"
              style={{ backgroundColor: 'rgba(0,0,0,0.4)', color: '#fff' }}
              aria-label="Next"
            >
              ›
            </button>
          )}
        </div>
      )}
    </div>
  )
}