Add Song model type

import { Base } from "./Base.js"

import { getFavoriteIds, addFavorite, removeFavorite } from "./favorites.js"

export default class Song extends Base {

    static async forceLoad() {

        return await m.request({ url: "/songs.json" })

    }

    get favorite() {

        return getFavoriteIds().has(this.id || this.uuid)

    }

    set favorite(isFavorite) {

        if (isFavorite) {

            addFavorite(this.id || this.uuid)

        } else {

            removeFavorite(this.id || this.uuid)

        }

    }

    toggleFavorite() {

        this.favorite = !this.favorite

    }

}