class MangaService {

  async getMangaById(db, mangaId) {
    const sqlQuery = 'SELECT * FROM mangas WHERE mangaId = ?';
    const results = await db.query(sqlQuery, [mangaId]);
    return results[0];
  }

  async getMangaIdByName(db, mangaName) {
    const sqlQuery = 'SELECT mangaId FROM mangas WHERE mangaName = ?';
    const results = await db.query(sqlQuery, [mangaName]);
    return results[0];
  }

  async insertMangaInfo(db, mangaInfo) {
    const sqlQuery = `
      INSERT INTO mangas (
        mangaId,
        mangaName,
        mangaAuthor,
        mangaNickname,
        mangaStatus
      ) VALUES (?, ?, ?, ?, ?)
    `;

    const params = [
      mangaInfo.mangaId,
      mangaInfo.name,
      mangaInfo.author,
      JSON.stringify(mangaInfo.nickNames),
      mangaInfo.status
    ];

    return await db.query(sqlQuery, params);
  }

  async insertMangaChapter(db, chapterInfo) {
    const sqlQuery = `
      INSERT INTO chapters (
        mangaId,
        chapterOrder,
        chapterName
      ) VALUES (?, ?, ?)
    `;

    const params = [
      chapterInfo.mangaId,
      chapterInfo.chapterOrder,
      chapterInfo.chapterName
    ];

    return await db.query(sqlQuery, params);
  }

  async insertMangaGenres(db, genres) {
    const sqlQuery = `
      INSERT INTO manga_genres (
        mangaId,
        genreId
      ) VALUES (?, ?)
    `;

    const params = [
      genres.mangaId,
      genres.genreId
    ];

    return await db.query(sqlQuery, params);
  }
}

module.exports = new MangaService();