import Link from 'next/link';
import { createTrack, deleteTrack, toggleTrack } from '@/actions/admin-radio-autodj';
import { StatusCard } from '@/components/admin/dashboard';
import { prisma } from '@/lib/prisma';

export const dynamic = 'force-dynamic';

export const metadata = { title: 'Radio AutoDJ' };

type Track = {
  id: bigint;
  title: string;
  artist: string | null;
  album: string | null;
  artworkUrl: string | null;
  duration: number | null;
  playCount: number;
  lastPlayedAt: Date | null;
  isActive: boolean;
  sortOrder: number;
};

/** Render an integer second count as m:ss, or an em dash when unset. */
function formatDuration(seconds: number | null): string {
  if (seconds == null || seconds < 0) return '—';
  const m = Math.floor(seconds / 60);
  const s = seconds % 60;
  return `${m}:${String(s).padStart(2, '0')}`;
}

function formatDate(d: Date | null): string {
  return d ? d.toISOString().slice(0, 16).replace('T', ' ') : '—';
}

export default async function AdminRadioAutoDjPage() {
  let tracks: Track[] = [];
  let dbError = false;

  try {
    tracks = await prisma.radioAutoDjPlaylist
      .findMany({
        select: {
          id: true,
          title: true,
          artist: true,
          album: true,
          artworkUrl: true,
          duration: true,
          playCount: true,
          lastPlayedAt: true,
          isActive: true,
          sortOrder: true,
        },
        orderBy: [{ sortOrder: 'asc' }, { title: 'asc' }],
      })
      .catch(() => {
        dbError = true;
        return [];
      });
  } catch {
    dbError = true;
    tracks = [];
  }

  const activeCount = tracks.filter((t) => t.isActive).length;
  const inactiveCount = tracks.length - activeCount;

  return (
    <main>
      <nav className="muted" style={{ marginBottom: '0.5rem' }}>
        <Link href="/admin/radio">Radio</Link> ·{' '}
        <Link href="/admin/radio/settings">Settings</Link> ·{' '}
        <Link href="/admin/radio/banners">Banners</Link> ·{' '}
        <Link href="/admin/radio/ranks">Ranks</Link> ·{' '}
        <Link href="/admin/radio/history">History</Link> ·{' '}
        <Link href="/admin/radio/autodj">AutoDJ</Link>
      </nav>

      <section className="mt-6">
        <h2>Radio AutoDJ</h2>
        <p className="muted" style={{ marginTop: '-0.4rem' }}>
          Fallback playlist (<code>radio_auto_dj_playlist</code>) the radio rotates
          through when no live DJ is streaming. Ordered by sort order then title.
        </p>

        {dbError ? (
          <div className="card" style={{ marginBottom: '1.5rem' }}>
            <p className="muted" style={{ margin: 0 }}>
              Could not load the AutoDJ playlist (database unavailable).
            </p>
          </div>
        ) : (
          <div className="grid grid-cols-[repeat(auto-fit,minmax(180px,1fr))] gap-3.5 mb-6">
            <StatusCard label="Tracks" value={tracks.length} icon="🎵" />
            <StatusCard
              label="Active"
              value={activeCount}
              state={activeCount > 0 ? 'ok' : 'neutral'}
              icon="▶️"
            />
            <StatusCard
              label="Inactive"
              value={inactiveCount}
              state={inactiveCount > 0 ? 'warn' : 'neutral'}
              icon="⏸️"
            />
          </div>
        )}
      </section>

      <section className="mt-6">
        <h2>Add track</h2>
        <form action={createTrack} className="card">
          <div className="grid cols-2">
            <div>
              <label htmlFor="new_title" style={{ display: 'block', fontWeight: 700 }}>
                Title
              </label>
              <input
                id="new_title"
                name="title"
                placeholder="Track title"
                required
                style={{ width: '100%' }}
              />
            </div>
            <div>
              <label htmlFor="new_artist" style={{ display: 'block', fontWeight: 700 }}>
                Artist
              </label>
              <input id="new_artist" name="artist" style={{ width: '100%' }} />
            </div>
            <div>
              <label htmlFor="new_album" style={{ display: 'block', fontWeight: 700 }}>
                Album
              </label>
              <input id="new_album" name="album" style={{ width: '100%' }} />
            </div>
            <div>
              <label htmlFor="new_artworkUrl" style={{ display: 'block', fontWeight: 700 }}>
                Artwork URL
              </label>
              <input
                id="new_artworkUrl"
                name="artworkUrl"
                placeholder="https://…/cover.png"
                style={{ width: '100%' }}
              />
            </div>
            <div>
              <label htmlFor="new_duration" style={{ display: 'block', fontWeight: 700 }}>
                Duration (seconds)
              </label>
              <input
                id="new_duration"
                name="duration"
                type="number"
                min={0}
                placeholder="e.g. 215"
                style={{ width: '100%' }}
              />
            </div>
            <div>
              <label htmlFor="new_sortOrder" style={{ display: 'block', fontWeight: 700 }}>
                Sort order
              </label>
              <input
                id="new_sortOrder"
                name="sortOrder"
                type="number"
                defaultValue={0}
                style={{ width: '100%' }}
              />
            </div>
            <div style={{ display: 'flex', alignItems: 'flex-end' }}>
              <label style={{ display: 'inline-flex', gap: '0.4rem', alignItems: 'center' }}>
                <input type="checkbox" name="isActive" value="1" defaultChecked /> Active
              </label>
            </div>
          </div>
          <div style={{ marginTop: '0.75rem' }}>
            <button type="submit" className="btn btn-primary">
              Add track
            </button>
          </div>
        </form>
      </section>

      <section className="mt-6">
        <h2>Playlist ({tracks.length})</h2>
        {tracks.length === 0 ? (
          <p className="muted">No AutoDJ tracks yet — add one above.</p>
        ) : (
          <div style={{ overflowX: 'auto' }}>
            <table>
              <thead>
                <tr>
                  <th>Order</th>
                  <th>Title</th>
                  <th>Artist</th>
                  <th>Album</th>
                  <th>Duration</th>
                  <th>Plays</th>
                  <th>Last played</th>
                  <th>Status</th>
                  <th>Actions</th>
                </tr>
              </thead>
              <tbody>
                {tracks.map((t) => (
                  <tr key={String(t.id)}>
                    <td className="muted">{t.sortOrder}</td>
                    <td>
                      <span
                        style={{ display: 'inline-flex', gap: '0.5rem', alignItems: 'center' }}
                      >
                        {t.artworkUrl ? (
                          <img
                            src={t.artworkUrl}
                            alt=""
                            width={32}
                            height={32}
                            style={{ borderRadius: 4, objectFit: 'cover' }}
                          />
                        ) : null}
                        <strong>{t.title}</strong>
                      </span>
                    </td>
                    <td className="muted">{t.artist ?? '—'}</td>
                    <td className="muted">{t.album ?? '—'}</td>
                    <td className="muted">{formatDuration(t.duration)}</td>
                    <td className="muted">{t.playCount}</td>
                    <td className="muted">{formatDate(t.lastPlayedAt)}</td>
                    <td>
                      <span className={`inline-block text-[0.72rem] font-bold px-2 py-0.5 rounded-full ${t.isActive ? 'bg-green-600/20 text-[var(--color-text)]' : 'bg-red-500/22 text-[var(--color-text)]'}`}>
                        {t.isActive ? 'active' : 'inactive'}
                      </span>
                    </td>
                    <td>
                      <div style={{ display: 'flex', gap: '0.4rem', flexWrap: 'wrap' }}>
                        <form action={toggleTrack}>
                          <input type="hidden" name="id" value={String(t.id)} />
                          <input type="hidden" name="isActive" value={t.isActive ? '0' : '1'} />
                          <button type="submit" className="btn">
                            {t.isActive ? 'Deactivate' : 'Activate'}
                          </button>
                        </form>
                        <form action={deleteTrack}>
                          <input type="hidden" name="id" value={String(t.id)} />
                          <button type="submit" className="btn btn-danger">
                            Delete
                          </button>
                        </form>
                      </div>
                    </td>
                  </tr>
                ))}
              </tbody>
            </table>
          </div>
        )}
      </section>
    </main>
  );
}