const axios = require('axios');
require('dotenv').config();

const API_KEY = process.env.TMDB_API_KEY;
const BASE = 'https://api.themoviedb.org/3';
let genreMap = null;

async function loadGenres() {
  if (genreMap) return genreMap;
  const [movieRes, tvRes] = await Promise.all([
    axios.get(`${BASE}/genre/movie/list`, { params: { api_key: API_KEY } }),
    axios.get(`${BASE}/genre/tv/list`, { params: { api_key: API_KEY } })
  ]);
  genreMap = {};
  (movieRes.data.genres || []).forEach(g => genreMap[g.id] = g.name);
  (tvRes.data.genres || []).forEach(g => genreMap[g.id] = g.name);
  return genreMap;
}

async function search(query, mediaType) {
  if (!API_KEY) throw new Error('TMDB_API_KEY not set in environment');
  await loadGenres();
  const params = { api_key: API_KEY, query, include_adult: false, page: 1 };
  let url = `${BASE}/search/multi`;
  if (mediaType === 'movie' || mediaType === 'tv') url = `${BASE}/search/${mediaType}`;
  const res = await axios.get(url, { params });
  const results = (res.data.results || []).slice(0, 12);
  return results.map(r => {
    const title = r.title || r.name || r.original_title || r.original_name || '';
    const overview = r.overview || '';
    const genreIds = r.genre_ids || (r.genres ? r.genres.map(g => g.id) : []);
    const genres = genreIds.map(id => genreMap[id]).filter(Boolean);
    return {
      id: r.id,
      title,
      type: r.media_type || (r.title ? 'movie' : 'tv'),
      overview,
      genres,
      poster: r.poster_path ? `https://image.tmdb.org/t/p/w342${r.poster_path}` : null
    };
  });
}

module.exports = { search };