import { Image } from 'expo-image';
import { Linking, Pressable, Share, StyleSheet, Text, View } from 'react-native';
import { SERVICE_LABELS, STREAMING_SERVICES, openUrl, shareText, trackUrl, type StreamingService, type TrackDTO } from '@musicshare/shared';
import { WEB_URL } from '@/lib/config';
import { useSession } from '@/lib/session';
import { showError } from '@/lib/errors';
import { colors, fonts, radius, space } from '@/lib/theme';
import { Button } from './ui';

/**
 * Links are https universal/app links, so Linking.openURL hands them to the
 * native Spotify / Apple Music / YouTube Music app when it's installed.
 */
const open = (url: string) => Linking.openURL(url).catch((e) => showError(e, "Couldn't open link"));

/** The phone's share sheet, with a link to the song's page (which opens it in any service). */
function shareTrack(track: TrackDTO, from: string | undefined) {
  const url = trackUrl(WEB_URL, track.id, from);
  // Android shows only `message`; iOS shows `url` as a rich link next to it.
  Share.share({ message: `${shareText(track)} ${url}`, url, title: shareText(track) }).catch((e) => showError(e, "Couldn't share"));
}

export function TrackCard({ track, preferred }: { track: TrackDTO; preferred: StreamingService | null | undefined }) {
  const { me } = useSession();
  const primary = preferred ? openUrl(track, preferred) : null;
  const others = STREAMING_SERVICES.filter((s) => s !== preferred);

  return (
    <View style={styles.track}>
      {track.artworkUrl ? (
        <Image source={track.artworkUrl} style={styles.artwork} contentFit="cover" transition={150} />
      ) : (
        <View style={[styles.artwork, styles.artworkEmpty]}>
          <Text style={styles.note}>♪</Text>
        </View>
      )}
      <View style={styles.body}>
        <Text style={styles.title} numberOfLines={1}>
          {track.title}
        </Text>
        <Text style={styles.artist} numberOfLines={1}>
          {track.artist}
          {track.album ? <Text style={styles.muted}> · {track.album}</Text> : null}
        </Text>
        {preferred && primary && (
          <Button
            small
            variant="primary"
            title={`${primary.exact ? 'Open' : 'Search'} in ${SERVICE_LABELS[preferred]}`}
            onPress={() => open(primary.url)}
            style={styles.primary}
          />
        )}
        <View style={styles.services}>
          {others.map((s) => {
            const { url, exact } = openUrl(track, s);
            return (
              <Pressable key={s} onPress={() => open(url)} hitSlop={6} accessibilityRole="link">
                <Text style={[styles.service, !exact && { opacity: 0.55 }]}>{SERVICE_LABELS[s]}</Text>
              </Pressable>
            );
          })}
          <Pressable onPress={() => shareTrack(track, me?.username)} hitSlop={6} accessibilityRole="button" accessibilityLabel="Share this song">
            <Text style={[styles.service, styles.share]}>Share ↗</Text>
          </Pressable>
        </View>
      </View>
    </View>
  );
}

const styles = StyleSheet.create({
  track: { flexDirection: 'row', gap: space.md + 2, alignItems: 'flex-start' },
  artwork: {
    width: 96,
    height: 96,
    borderRadius: 14,
    backgroundColor: colors.surface2,
    borderWidth: StyleSheet.hairlineWidth,
    borderColor: 'rgba(255,255,255,0.12)',
  },
  artworkEmpty: { alignItems: 'center', justifyContent: 'center', backgroundColor: '#3a1a6e' },
  note: { color: 'rgba(255,255,255,0.85)', fontSize: 30 },
  body: { flex: 1, minWidth: 0, gap: 2 },
  title: { color: colors.text, fontFamily: fonts.display, fontSize: 18, letterSpacing: -0.2 },
  artist: { color: colors.text, opacity: 0.85, fontSize: 14 },
  muted: { color: colors.muted },
  share: { backgroundColor: 'rgba(123,47,247,0.28)', borderColor: 'rgba(123,47,247,0.5)' },
  primary: { alignSelf: 'flex-start', marginTop: space.sm },
  services: { flexDirection: 'row', flexWrap: 'wrap', gap: space.xs + 2, marginTop: space.sm + 2 },
  service: {
    color: colors.text,
    fontSize: 12,
    paddingHorizontal: space.sm + 2,
    paddingVertical: 4,
    borderRadius: radius.pill,
    overflow: 'hidden',
    backgroundColor: 'rgba(255,255,255,0.08)',
    borderWidth: StyleSheet.hairlineWidth,
    borderColor: 'rgba(255,255,255,0.12)',
  },
});