import { prisma } from "@/lib/db";
import { yearFromPath } from "@/lib/library-path";

// Owned albums (LibraryItem) enriched with the release-group MBID + year from the matching
// MonitoredRelease (joined on artist/album), so the Library grid can show cover art + tracks.
export async function GET() {
  const [items, releases] = await Promise.all([
    prisma.libraryItem.findMany({ orderBy: { importedAt: "desc" } }),
    prisma.monitoredRelease.findMany({
      select: { id: true, artistName: true, album: true, rgMbid: true, firstReleaseDate: true, primaryType: true, artistMbid: true },
    }),
  ]);
  const key = (artist: string, album: string) => `${artist} ${album}`;
  const byKey = new Map(releases.map((r) => [key(r.artistName, r.album), r]));
  return Response.json({
    albums: items.map((li) => {
      const mr = byKey.get(key(li.artist, li.album));
      return {
        id: li.id,
        artist: li.artist,
        album: li.album,
        format: li.format,
        qualityClass: li.qualityClass,
        importedAt: li.importedAt,
        rgMbid: li.rgMbid ?? mr?.rgMbid ?? null,
        // prefer the resolved release year; fall back to the "(YYYY)" in the folder name so
        // manually-imported / metadata-edited albums (no matching release) still show a year
        year: mr?.firstReleaseDate?.slice(0, 4) ?? yearFromPath(li.path),
        primaryType: mr?.primaryType ?? null,
        artistMbid: li.artistMbid ?? mr?.artistMbid ?? null,
        monitoredReleaseId: mr?.id ?? null,
        trackNames: li.trackNames,
      };
    }),
  });
}