"use strict";

class trdom_torrentmanager extends EventTarget {
    #logcb;
    #log(loglevel, msg) {
        if (this.#logcb !== null) {
            this.#logcb('trdom_torrentmanager', loglevel, msg);
        }
    }

    #element = document.createElement('div');
    getElement() {
        return this.#element;
    }

    #torrentDB = {};
    get torrents() {
        return this.#torrentDB;
    }

    constructor(logcb = null) {
        super();
        this.#logcb = logcb;
        this.#element.classList.add('trweb_torrentlistview', 'container-fluid');
    }

    handleEvent(e) {
        this.#log(6, `Handling event of type ${e.type}`);
        switch (e.type) {
        // if we get info of a torrent that we don't have in the DB, create it,
        // then alert trdom_servermanager so it can add server controls to it
        // that'll also handle alerting trtorrents of new servers
        case 'torrent-update':
            let hash = e.detail.torrentHash;
            if (this.#torrentDB[hash] == null) {
                let torrent = new trtorrent(hash);
                this.#torrentDB[hash] = torrent;
                this.#element.appendChild(torrent.element);
                this.dispatchEvent(new CustomEvent(
                    'torrent-created',
                    {
                        detail: {
                            torrentHash: hash, 
                            torrentObject: torrent,
                            torrentInfo: e.detail.torrentInfo,
                            serverName: e.detail.serverName,
                            serverObject: e.detail.serverObject
                        }
                    }
                ));
            }
            break;
        case 'torrentserver-added':
            let server = e.detail.serverObject;
            // see this handler
            server.addEventListener('torrent-update', this);
            break;
        default:
            this.#log(5, `Event type ${e.type} not supported`);
            break;
        }
    }
}