var FavoriteLink = Class.create();
Object.extend(FavoriteLink.prototype, {
	not_favorite_text: 'Save Listing',
	new_favorite_text: 'A new listing has been added to My Saved Homes',
	favorite_text: 'Un-Save Listing',
	removed_favorite_text: 'This listing has been removed from My Saved Homes',
	favorite_login: 'Login to save a favorite',
	initialize: function(element) {
		this.element = element;
		this.registerEvents();
	},
	registerEvents: function() {
		Event.observe(this.element, 'click',
			this.toggle.bindAsEventListener(this));
	},
	toggle: function(event) {
		Event.stop(event);
		if( this.element.innerHTML.indexOf(this.favorite_login) != -1 ) {
			location.href = '/user/login.php?new_favorite='+this.fmls();
			return;
		}
		var saving = this.element.innerHTML.indexOf(this.favorite_text) == -1;
		this.element.innerHTML = saving ?
			this.element.innerHTML.replace(this.not_favorite_text, this.favorite_text) :
			this.element.innerHTML.replace(this.favorite_text, this.not_favorite_text);
		new Ajax.Request('/controllers/user/toggle_favorite.php', {
			parameters: $H({fmls: this.fmls()}).toQueryString(),
			onSuccess: (function(transport, json) {
				alert(saving
					? this.new_favorite_text
					: this.removed_favorite_text);
			}).bind(this)
		});
	},
	fmls: function() {
		return this.element.id.gsub(/\D/, '');
	}
});

Event.observe(window, 'load', function() {
	document.getElementsByClassName('favorite-link').each(function(e) {
		new FavoriteLink(e);
	});
});