import { NextResponse } from "next/server";
import { REEL_POSTER_COUNT } from "@/lib/constants";
import { fetchTMDBMovies } from "@/lib/tmdb-fetch";

interface ReelPoster {
  tmdb_id: number;
  poster_path: string;
  title: string;
}

// Always-pinned entries that lead the carousel.
const PINNED_REEL_POSTERS: ReelPoster[] = [
  {
    tmdb_id: 615,
    title: "The Passion of the Christ",
    poster_path: "/rBM5o2HpmCfDejuIPybI09tkY3V.jpg",
  },
];

// Fallback: fetch popular movies for reel posters.
// In production, the cron job populates the landing_reel_posters table.
export async function GET() {
  try {
    const params = new URLSearchParams({
      language: "en-US",
      page: "1",
      include_adult: "false",
    });

    const { movies, error, status } = await fetchTMDBMovies("/movie/popular", params);

    if (error) {
      return NextResponse.json({ error }, { status: status ?? 502 });
    }

    const popular: ReelPoster[] = movies.map((m) => ({
      tmdb_id: m.id,
      poster_path: m.poster_path!,
      title: m.title,
    }));

    const seen = new Set<number>();
    const posters: ReelPoster[] = [];
    for (const p of [...PINNED_REEL_POSTERS, ...popular]) {
      if (seen.has(p.tmdb_id)) continue;
      seen.add(p.tmdb_id);
      posters.push(p);
      if (posters.length >= REEL_POSTER_COUNT) break;
    }

    return NextResponse.json({ posters });
  } catch {
    return NextResponse.json({ error: "Internal server error" }, { status: 500 });
  }
}