// Converse.js
// https://conversejs.org
//
// Copyright (c) 2020, the Converse.js contributors
// Licensed under the Mozilla Public License (MPLv2)
//
// Webpack entry file
//
// The purpose of this file is to provide an initial temporary public API
// (window.converse) for **before** the rest of converse.js is loaded so
// that we can set the __webpack_public_path__ global variable.
//
// Once the rest converse.js has been loaded, window.converse will be replaced
// with the full-fledged public API.

const plugins = {};

const converse = {
    plugins: {
        add (name, plugin) {
            if (plugins[name] !== undefined) {
                throw new TypeError(
                    `Error: plugin with name "${name}" has already been ` + 'registered!'
                );
            }
            plugins[name] = plugin;
        }
    },

    initialize (settings={}) {
        return converse.load(settings).initialize(settings);
    },

    /**
     * Public API method which explicitly loads Converse and allows you the
     * possibility to pass in configuration settings which need to be defined
     * before loading. Currently this is only the [assets_path](https://conversejs.org/docs/html/configuration.html#assets_path)
     * setting.
     *
     * If not called explicitly, this method will be called implicitly once
     * {@link converse.initialize} is called.
     *
     * In most cases, you probably don't need to explicitly call this method,
     * however, until converse.js has been loaded you won't have access to the
     * utility methods and globals exposed via {@link converse.env}. So if you
     * need to access `converse.env` outside of any plugins and before
     * `converse.initialize` has been called, then you need to call
     * `converse.load` first.
     *
     * @memberOf converse
     * @method load
     * @param { object } settings A map of configuration-settings that are needed at load time.
     * @example
     * converse.load({assets_path: '/path/to/assets/'});
     */
    load (settings={}) {
        if (settings.assets_path) {
            __webpack_public_path__ = settings.assets_path; // eslint-disable-line no-undef
        }
        require('./index.js');
        Object.keys(plugins).forEach(name => converse.plugins.add(name, plugins[name]));
        return converse;
    }
}

window.converse = converse;

/**
 * Once Converse.js has loaded, it'll dispatch a custom event with the name `converse-loaded`.
 * You can listen for this event in order to be informed as soon as converse.js has been
 * loaded and parsed, which would mean it's safe to call `converse.initialize`.
 * @event converse-loaded
 * @example window.addEventListener('converse-loaded', () => converse.initialize());
 */
const ev = new CustomEvent('converse-loaded', {'detail': { converse }});
window.dispatchEvent(ev);

export default converse;