MusicTopus/src/middleware/Albums.js

import moment from "moment";

import Pages from "./Pages";

import AlbumsModel from "../models/albums";
import ErrorEvent from "../libs/error";

/**
 * Classe permettant la gestion des albums d'un utilisateur
 */
class Albums extends Pages {
    /**
     * Méthode permettant d'ajouter un album dans une collection
     * @param {Object} req
     * @return {Object}
     */
    static async postAddOne(req) {
        const { body, user } = req;
        const data = {
            ...body,
            discogsId: body.id,
            User: user._id,
        };
        data.released = data.released
            ? moment(data.released.replace("-00", "-01"))
            : null;
        delete data.id;

        const album = new AlbumsModel(data);

        return album.save();
    }

    /**
     * Méthode permettant de récupérer les éléments distincts d'une collection
     * @param {String} field
     * @param {ObjectId} user
     * @return {Array}
     */
    static async getAllDistincts(field, user) {
        const distincts = await AlbumsModel.find(
            {
                user,
            },
            [],
            {
                sort: {
                    [field]: 1,
                },
            }
        ).distinct(field);

        return distincts;
    }

    /**
     * Méthode permettant de récupérer la liste des albums d'une collection
     * @return {Object}
     */
    async getAll() {
        const {
            page = 1,
            limit = 4,
            sort = "artists_sort",
            order = "asc",
            artists_sort,
            format,
        } = this.req.query;

        const skip = (page - 1) * limit;

        const where = {};

        if (artists_sort) {
            where.artists_sort = artists_sort;
        }
        if (format) {
            where["formats.name"] = format;
        }

        const count = await AlbumsModel.count({
            user: this.req.user._id,
            ...where,
        });

        const rows = await AlbumsModel.find(
            {
                user: this.req.user._id,
                ...where,
            },
            [],
            {
                skip,
                limit,
                sort: {
                    [sort]: order.toLowerCase() === "asc" ? 1 : -1,
                },
            }
        );

        return {
            rows,
            count,
        };
    }

    /**
     * Méthode permettant de supprimer un élément d'une collection
     * @return {Boolean}
     */
    async deleteOne() {
        const res = await AlbumsModel.findOneAndDelete({
            user: this.req.user._id,
            _id: this.req.params.itemId,
        });

        if (res) {
            return true;
        }

        throw new ErrorEvent(404, "Impossible de trouver cet album");
    }

    /**
     * Méthode permettant de créer la page "ma-collection"
     */
    async loadMyCollection() {
        const artists = await Albums.getAllDistincts(
            "artists_sort",
            this.req.user._id
        );
        const formats = await Albums.getAllDistincts(
            "formats.name",
            this.req.user._id
        );

        this.setPageContent("artists", artists);
        this.setPageContent("formats", formats);
    }

    /**
     * Méthode permettant d'afficher le détails d'un album
     */
    async loadItem() {
        const { itemId: _id } = this.req.params;
        const { _id: User } = this.req.user;
        const item = await AlbumsModel.findOne({
            _id,
            User,
        });

        this.setPageContent("item", item);
    }
}

export default Albums;