thorio/KGrabber

/**
 * @typedef {import("kgrabber-types/Exporter")} Exporter
 */

/**
 * @type {Exporter[]}
 */
const exporters = [
    require("./list"),
    require("./m3u8"),
    require("./json"),
    require("./html"),
    require("./csv"),
    require("./aria2c"),
    require("./idmbat"),
];

/**
 * Gets all exporters
 * @returns {Exporter[]}
 */
exports.all = () =>
    exporters;

/**
 * Returns all available exporters
 * @param {String} linkType
 * @param {Boolean} samePage Is the browser on the same show's page?
 * @returns {Exporter[]}
 */
exports.available = (linkType, samePage) =>
    exporters.filter((exporter) =>
        filter(exporter, linkType, samePage)
    );

/**
 * Returns all exporters, marked and sorted by availability
 * @param {String} linkType
 * @param {Boolean} samePage Is the browser on the same show's page?
 * @returns {{available:Boolean; exporter:Exporter}[]}
 */
exports.sorted = (linkType, samePage) =>
    exporters.map((exporter) => {
        return { available: filter(exporter, linkType, samePage), exporter };
    })
    .sort((a, b) => b.available - a.available);

/**
 * @param {...Exporter} newExporters
 */
exports.add = (...newExporters) => {
    exporters.push(...newExporters);
};

/**
 * Determines wether an exporter is available
 * @param {Exporter} exporter
 * @param {String} linkType
 * @param {Boolean} samePage
 * @private
 */
function filter(exporter, linkType, samePage) {
    //exclude exporters that are incompatible with the linktype
    if (!exporter.linkTypes.includes(linkType)) {
        return false;
    }
    //exclude exporters that need access to another page
    if (exporter.requireSamePage && !samePage) {
        return false;
    }
    return true;
}