import React from 'react';

export interface SubtitleSegment {
  id: number;
  startTime: string;
  endTime: string;
  duration: string;
  sourceText: string;
  targetText?: string;
  isCurrent?: boolean;
}

export interface VideoInfo {
  title: string;
  duration: string;
  totalSegments: number;
  currentSegment: number;
}

interface SubtitlingModuleProps {
  videoInfo: VideoInfo;
  subtitleSegments: SubtitleSegment[];
  currentDisplayedSubtitle?: string;
  onSegmentClick?: (id: number) => void;
  getSegmentButtonClass?: (id: number) => string;
  onPlayPause?: () => void;
  isPlaying?: boolean;
  onSaveSegment?: (id: number, text: string) => void;
}

/**
 * Reusable subtitling interface template for future weeks.
 * Not currently rendered in any page; kept for reuse.
 */
const SubtitlingModule: React.FC<SubtitlingModuleProps> = ({
  videoInfo,
  subtitleSegments,
  currentDisplayedSubtitle,
  onSegmentClick,
  getSegmentButtonClass,
  onPlayPause,
  isPlaying,
}) => {
  return (
    <div className="grid grid-cols-1 lg:grid-cols-2 gap-8">
      <div className="bg-white rounded-xl shadow-lg border border-gray-100 p-6">
        <div className="mb-4">
          <h3 className="text-xl font-bold text-gray-900 mb-2">{videoInfo.title}</h3>
        </div>
        <div className="bg-black rounded-lg aspect-video overflow-hidden relative">
          <div className="absolute inset-0 flex items-center justify-center text-white/70 text-sm">Video Placeholder</div>
          {currentDisplayedSubtitle && (
            <div className="absolute bottom-8 left-1/2 transform -translate-x-1/2 z-10">
              <div className="bg-black bg-opacity-80 text-white px-6 py-3 rounded-lg text-center max-w-lg">
                <p className={`text-base font-medium leading-relaxed tracking-wide ${currentDisplayedSubtitle.length <= 42 ? 'whitespace-nowrap' : 'whitespace-pre-line'}`}>
                  {currentDisplayedSubtitle}
                </p>
              </div>
            </div>
          )}
        </div>
      </div>

      <div className="bg-white rounded-xl shadow-lg border border-gray-100 p-6">
        <h3 className="text-xl font-bold text-gray-900 mb-4">Translation Workspace</h3>
        <div className="grid grid-cols-9 gap-1 mb-6">
          {subtitleSegments.map((segment) => (
            <button
              key={segment.id}
              onClick={() => onSegmentClick && onSegmentClick(segment.id)}
              className={`px-1 py-1 rounded text-xs w-full ${getSegmentButtonClass ? getSegmentButtonClass(segment.id) : ''}`}
            >
              {segment.id}
            </button>
          ))}
        </div>
        <div className="flex items-center gap-2 mb-4">
          <button onClick={onPlayPause} className="px-3 py-1.5 text-sm rounded-md border border-gray-300">
            {isPlaying ? 'Pause' : 'Play'}
          </button>
          <div className="text-sm text-gray-600">{videoInfo.currentSegment}/{videoInfo.totalSegments}</div>
        </div>
        <div className="space-y-4">
          {subtitleSegments.map(seg => (
            <div key={seg.id} className="border border-gray-200 rounded-lg p-3">
              <div className="text-xs text-gray-500 mb-1">{seg.startTime} → {seg.endTime} ({seg.duration})</div>
              <div className="text-sm text-gray-800 mb-2">{seg.sourceText}</div>
              <textarea className="w-full border border-gray-300 rounded p-2 text-sm" defaultValue={seg.targetText || ''} rows={2} />
            </div>
          ))}
        </div>
      </div>
    </div>
  );
};

export default SubtitlingModule;