// based on http://www.velvetcache.org/2010/08/19/a-simple-javascript-hooks-system


/* exported PluginHost */
const PluginHost = {
	HOOK_ARTICLE_RENDERED: 1,
	HOOK_ARTICLE_RENDERED_CDM: 2,
	HOOK_ARTICLE_SET_ACTIVE: 3,
	HOOK_FEED_SET_ACTIVE: 4,
	HOOK_FEED_LOADED: 5,
	HOOK_ARTICLE_EXPANDED: 6,
	HOOK_ARTICLE_COLLAPSED: 7,
	HOOK_PARAMS_LOADED: 8,
	HOOK_RUNTIME_INFO_LOADED: 9,
	HOOK_FLOATING_TITLE: 10,
	HOOK_INIT_COMPLETE: 11,
	HOOK_HEADLINE_RENDERED: 12,
	HOOK_COUNTERS_RECEIVED: 13,
	HOOK_COUNTERS_PROCESSED: 14,
	HOOK_HEADLINE_MUTATIONS: 15,
	HOOK_HEADLINE_MUTATIONS_SYNCED: 16,
	HOOK_HEADLINES_RENDERED: 17,
	HOOK_HEADLINES_SCROLL_HANDLER: 18,
	HOOK_HEADLINE_TOOLBAR_SELECT_MENU_ITEM2: 19,
	hooks: [],
	register: function (name, callback) {
		if (typeof(this.hooks[name]) == 'undefined')
			this.hooks[name] = [];

		this.hooks[name].push(callback);
	},
	run: function (name, args) {
		//console.warn('PluginHost.run', name);

		if (typeof(this.hooks[name]) != 'undefined')
			for (let i = 0; i < this.hooks[name].length; i++) {
				this.hooks[name][i](args);
			}
	},
	run_until: function (name, check, ...args) {
		//console.warn('PluginHost.run_until', name, check, args);

		if (typeof(this.hooks[name]) != 'undefined')
			for (let i = 0; i < this.hooks[name].length; i++) {
				if (this.hooks[name][i](args) == check)
					return true;
			}

		return false;
	},
	unregister: function (name, callback) {
		for (let i = 0; i < this.hooks[name].length; i++)
			if (this.hooks[name][i] == callback)
				this.hooks[name].splice(i, 1);
	}
};

/* PluginHost.register(PluginHost.HOOK_ARTICLE_RENDERED,
		function (args) { console.log('ARTICLE_RENDERED: ' + args); return true; });

PluginHost.register(PluginHost.HOOK_ARTICLE_RENDERED_CDM,
		function (args) { console.log('ARTICLE_RENDERED_CDM: ' + args); return true; }); */