// screens-library.jsx

function Library({ navigate, onOpenAsset, openProject }) {
  const { ASSETS: ALL_ASSETS, BINS, PROJECTS } = window.ZAMPP_DATA;
  const [view, setView] = React.useState('grid');
  const [filter, setFilter] = React.useState('all');
  const [search, setSearch] = React.useState('');

  let assets = openProject
    ? ALL_ASSETS.filter(a => a.project_id === openProject.id)
    : ALL_ASSETS;
  if (filter !== 'all') assets = assets.filter(a => a.status === filter);
  if (search) assets = assets.filter(a => a.name.toLowerCase().includes(search.toLowerCase()));

  const displayTitle = openProject ? openProject.name : 'All Assets';
  const errorCount = ALL_ASSETS.filter(a => a.status === 'error').length;
  const recentCount = ALL_ASSETS.filter(a => (Date.now() - new Date(a.created_at)) < 86400000).length;

  return (
    <div className="library-layout">
      <aside className="library-rail">
        <div>
          <h4>Projects</h4>
          <div className="rail-list">
            <div className={`rail-item ${!openProject ? 'active' : ''}`} onClick={() => navigate('library')} style={{ cursor: 'pointer' }}>
              <Icon name="library" size={13} className="rail-icon" />
              <span>All projects</span>
              <span className="rail-count">{ALL_ASSETS.length}</span>
            </div>
            {PROJECTS.slice(0, 8).map(p => (
              <div key={p.id} className={`rail-item ${openProject && openProject.id === p.id ? 'active' : ''}`} style={{ cursor: 'pointer' }}
                onClick={() => { navigate('projects'); }}>
                <span className="rail-color-dot" style={{ background: p.color }} />
                <span style={{ overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>{p.name}</span>
                <span className="rail-count">{p.assets}</span>
              </div>
            ))}
          </div>
        </div>
        {BINS.length > 0 && (
          <div>
            <h4>Bins</h4>
            <div className="rail-list">
              {BINS.map(b => (
                <div key={b.id} className="rail-item">
                  <Icon name={binIcon(b.icon)} size={13} className="rail-icon" />
                  <span>{b.name}</span>
                  <span className="rail-count">{b.count}</span>
                </div>
              ))}
            </div>
          </div>
        )}
        <div>
          <h4>Smart filters</h4>
          <div className="rail-list">
            {errorCount > 0 && <div className="rail-item" onClick={() => setFilter('error')} style={{ cursor: 'pointer' }}><Icon name="alert" size={13} className="rail-icon" /><span>Errors</span><span className="rail-count">{errorCount}</span></div>}
            <div className="rail-item" onClick={() => setFilter('all')} style={{ cursor: 'pointer' }}><Icon name="clock" size={13} className="rail-icon" /><span>Last 24h</span><span className="rail-count">{recentCount}</span></div>
            <div className="rail-item" onClick={() => setFilter('ready')} style={{ cursor: 'pointer' }}><Icon name="check" size={13} className="rail-icon" /><span>Ready</span><span className="rail-count">{ALL_ASSETS.filter(a => a.status === 'ready').length}</span></div>
          </div>
        </div>
      </aside>

      <div className="library-main">
        <div className="library-toolbar">
          <div className="toolbar-title">{displayTitle}</div>
          <span className="count">· {assets.length} assets</span>
          <div style={{ flex: 1 }} />
          <div className="search" style={{ width: 220 }}>
            <Icon name="search" className="search-icon" />
            <input value={search} onChange={e => setSearch(e.target.value)} placeholder="Filter assets…" />
          </div>
          <div className="tab-group">
            {['all', 'ready', 'processing', 'live', 'error'].map(f => (
              <button key={f} className={filter === f ? 'active' : ''} onClick={() => setFilter(f)}>
                {f === 'all' ? 'All' : f[0].toUpperCase() + f.slice(1)}
              </button>
            ))}
          </div>
          <div className="tab-group">
            <button className={view === 'grid' ? 'active' : ''} onClick={() => setView('grid')}><Icon name="grid" size={12} /></button>
            <button className={view === 'list' ? 'active' : ''} onClick={() => setView('list')}><Icon name="list" size={12} /></button>
          </div>
          <button className="btn primary" onClick={() => navigate('upload')}><Icon name="upload" />Upload</button>
        </div>

        {assets.length === 0 ? (
          <div style={{ padding: 60, textAlign: 'center', color: 'var(--text-3)' }}>No assets match this filter.</div>
        ) : view === 'grid' ? (
          <div className="library-grid">
            {assets.map(a => <AssetCard key={a.id} asset={a} onOpen={() => onOpenAsset(a)} />)}
          </div>
        ) : (
          <div className="library-list">
            <div className="list-row head">
              <div></div><div>Name</div><div>Duration</div><div>Resolution</div><div>Codec</div><div>Size</div><div>Updated</div><div></div>
            </div>
            {assets.map(a => (
              <div key={a.id} className="list-row" onClick={() => onOpenAsset(a)} style={{ cursor: 'pointer' }}>
                <div className="thumb"><AssetThumb asset={a} /></div>
                <div>
                  <div className="name">{a.name}</div>
                  <div style={{ display: 'flex', gap: 6, marginTop: 2 }}>
                    <StatusDot status={a.status} />
                    <span style={{ fontSize: 11, color: 'var(--text-3)' }}>{a.status}</span>
                  </div>
                </div>
                <div className="col-sub">{a.duration}</div>
                <div className="col-sub">{a.res}</div>
                <div className="col-sub">{a.codec || '—'}</div>
                <div className="col-sub">{a.size}</div>
                <div className="col-sub">{a.updated}</div>
                <button className="icon-btn" onClick={e => e.stopPropagation()}><Icon name="more" /></button>
              </div>
            ))}
          </div>
        )}
      </div>
    </div>
  );
}

function AssetCard({ asset, onOpen }) {
  return (
    <div className="asset-card" onClick={onOpen}>
      <AssetThumb asset={asset} />
      <div className="thumb-status">
        {asset.status === 'live' && <span className="badge live">LIVE</span>}
        {asset.status === 'processing' && <span className="badge warning">Processing</span>}
        {asset.status === 'error' && <span className="badge danger">Error</span>}
      </div>
      {(asset.type === 'video' || !asset.type) && asset.duration !== '—' && <div className="thumb-duration">{asset.duration}</div>}
      <div className="meta">
        <div className="name">{asset.name}</div>
        <div className="sub">
          <span>{asset.res}</span>
          <span>·</span>
          <span>{asset.size}</span>
        </div>
      </div>
    </div>
  );
}

function binIcon(name) {
  return { grid: 'library', live: 'record', film: 'film', proxy: 'proxy', audio: 'audio', package: 'package' }[name] || 'folder';
}

window.Library = Library;
window.AssetCard = AssetCard;