import Playlist from '../models/Playlist.js';
import ApiError from '../controllers/ErrorController.js';

class PlaylistService {
    async create({name}) {
        const playlist = await Playlist.create({name, date: new Date()});

        return {playlist};
    }
    
    async getAll({page, search}) {
        const limit = page ? 10 : 0 

        const playlists = await Playlist.find({name: {$regex: search || '', $options: 'i'}}).skip(page * limit).limit(limit).sort({_id: -1});
        const count = await Playlist.countDocuments({name: {$regex: search || '', $options: 'i'}});

        return {playlists, count: Math.ceil(count/limit)};
    }

    async getOne({id}) {
        const playlist = await Playlist.findById(id);
        if(!playlist) {
            throw ApiError.BadRequest('Плейлиста не существует'); 
        }

        return {playlist};
    }
    async edit({id, name}) {
        const playlist = await Playlist.findByIdAndUpdate(id, {name}, {returnOriginal: false});
        if(!playlist) {
            throw ApiError.BadRequest('Плейлиста не существует'); 
        }
        
        return {playlist};
    }

    async delete({id}) {
        const playlist = await Playlist.findByIdAndDelete(id).select(['login']);
        if(!playlist) {
            throw ApiError.BadRequest('Плейлиста не существует'); 
        }

        return {playlist};
    }
}

export default new PlaylistService();