const fmtTimestamp = (sec) => {
    if (sec == null) return '';
    const total = Math.floor(sec);
    const h = Math.floor(total / 3600);
    const m = Math.floor((total % 3600) / 60);
    const s = total % 60;
    if (h) return `${h}:${String(m).padStart(2,'0')}:${String(s).padStart(2,'0')}`;
    return `${m}:${String(s).padStart(2,'0')}`;
};

export default function PipelineDetailModal({ pipeline, onClose }) {
    if (!pipeline) return null;
    const meta = pipeline.metadata || {};
    const review = pipeline.review || {};

    return (
        <div className="modal-overlay" onClick={onClose}>
            <div className="modal-body modal-body--lg" onClick={e => e.stopPropagation()}>
                <header className="pdm-header">
                    <h3>{pipeline.compile_title || pipeline.track_title || `Pipeline #${pipeline.id}`}</h3>
                    <span className="pdm-badge">{pipeline.visual_style || 'essential'}</span>
                    <button onClick={onClose} className="pdm-close" aria-label="close">×</button>
                </header>

                <div className="pdm-grid">
                    {pipeline.cover_url && (
                        <figure className="pdm-figure">
                            <img src={pipeline.cover_url} alt="cover" />
                            <figcaption>커버 (배경)</figcaption>
                        </figure>
                    )}
                    {pipeline.thumbnail_url && (
                        <figure className="pdm-figure">
                            <img src={pipeline.thumbnail_url} alt="thumbnail" />
                            <figcaption>썸네일</figcaption>
                        </figure>
                    )}
                </div>

                {pipeline.video_url && (
                    <div className="pdm-video">
                        <video src={pipeline.video_url} controls preload="metadata" width="100%" />
                    </div>
                )}

                {meta.title && (
                    <section className="pdm-section">
                        <h4>메타데이터</h4>
                        <p><strong>제목:</strong> {meta.title}</p>
                        <details>
                            <summary>설명 ({(meta.description || '').length}자)</summary>
                            <pre className="pdm-pre">{meta.description}</pre>
                        </details>
                        <p><strong>태그:</strong> {(meta.tags || []).join(', ')}</p>
                    </section>
                )}

                {review.weighted_total != null && (
                    <section className="pdm-section">
                        <h4>
                            AI 검토
                            <span className={`pdm-verdict pdm-verdict--${review.verdict}`}>
                                {review.verdict}
                            </span>
                            <span className="pdm-score">({review.weighted_total}/100)</span>
                        </h4>
                        <table className="pdm-review-table">
                            <tbody>
                                <tr><td>메타데이터 품질</td><td>{review.metadata_quality?.score}</td></tr>
                                <tr><td>콘텐츠 정책</td><td>{review.policy_compliance?.score}</td></tr>
                                <tr><td>시청 경험</td><td>{review.viewer_experience?.score}</td></tr>
                                <tr><td>트렌드 정렬</td><td>{review.trend_alignment?.score}</td></tr>
                            </tbody>
                        </table>
                        {review.summary && <p className="pdm-summary"><em>{review.summary}</em></p>}
                    </section>
                )}

                {pipeline.tracks && pipeline.tracks.length > 1 && (
                    <section className="pdm-section">
                        <h4>트랙 리스트 ({pipeline.tracks.length})</h4>
                        <ol className="pdm-tracks">
                            {pipeline.tracks.map(t => (
                                <li key={t.id}>
                                    <span className="pdm-track-time">[{fmtTimestamp(t.start_offset_sec)}]</span>
                                    {' '}{t.title}
                                    <span className="pdm-track-dur"> ({fmtTimestamp(t.duration_sec)})</span>
                                </li>
                            ))}
                        </ol>
                    </section>
                )}

                {pipeline.feedback && pipeline.feedback.length > 0 && (
                    <section className="pdm-section">
                        <h4>피드백 히스토리 ({pipeline.feedback.length})</h4>
                        <ul className="pdm-feedback">
                            {pipeline.feedback.map(f => (
                                <li key={f.id}>
                                    <code>[{f.step}]</code> {f.feedback_text}
                                    <small> {(f.received_at || '').replace('T', ' ')}</small>
                                </li>
                            ))}
                        </ul>
                    </section>
                )}

                {pipeline.youtube_video_id && (
                    <a href={`https://youtu.be/${pipeline.youtube_video_id}`}
                       target="_blank" rel="noreferrer" className="pdm-youtube">
                        🎬 YouTube에서 보기
                    </a>
                )}
            </div>
        </div>
    );
}