/* ===========================================================
 * ButtonLocker.js v0.0.1
 * ===========================================================
 * Copyright 2017 Prevu
 * ========================================================== */

(function ($) {

	"use strict"; // jshint ;_;
	/* ButtonLocker CLASS DEFINITION
    * ====================== */

	var ButtonLocker = function (element, options) {
		this.init(element, options);
	};

	ButtonLocker.prototype = {
		constructor: ButtonLocker,
		init: function (element, options) {
			var plugin = this;
			this.options = options;
			this.$container = $(element);
			this.$isLocked = false;

			var tagName = this.$container.prop('tagName');
			if ((tagName != 'BUTTON') && (tagName != 'A' || !this.$container.hasClass('btn'))) {
				throw "Widget must be created for buttons";
			}

			this.$container.on('click.buttonlocker', function (event) {
			    var result = plugin.buttonClick(event);
			    return result;
			});

			if (this.options.debug) {
				console.log('ButtonLocker: initialized');
			}

			if (this.options.initCallback && (typeof this.options.initCallback === 'function')) {
				this.options.initCallback();
			}
		},
		buttonClick: function (event) {
			if (this.$isLocked)
				return;

			this.disable();
			var plugin = this;
			var clickResult = null;

			try {
				if (this.options.click && (typeof this.options.click === 'function')) {
					event.stopPropagation();
					clickResult = this.options.click(this.$container, this.options.params);

				    if (clickResult != null)
				    	return clickResult;
				}
			}
		    finally {
		    	if (plugin.options.timeout) {
		    		setTimeout(function () {
		    			plugin.enable();
		    		}, plugin.options.timeout);
		    	}
		    }
		},
		enable: function () {
		    if (this.$container.hasClass('disabled')) {
		        this.$container.removeClass('disabled');
		    }
		    this.$isLocked = false;

		    if (this.options.debug) {
		        console.log('ButtonLocker: button unlocked');
		    }
		},
		disable: function () {
			this.$isLocked = true;
			if (!this.$container.hasClass('disabled')) {
				this.$container.addClass('disabled');
			}

			if (this.options.debug) {
				console.log('ButtonLocker: button locked');
			}
		},
		isDisabled: function () {
			return this.$isLocked;
		},
		destroy: function () {
			var e = $.Event('destroy');
			this.$container.trigger(e);

			if (e.isDefaultPrevented())
				return;

			this.$container.off('click.buttonlocker', this.buttonClick);

			if (this.options.debug) {
				console.log('ButtonLocker: destroyed');
			}
		},
	};
	/* BUTTON LOCKER PLUGIN DEFINITION
    * ======================= */

	$.fn.buttonLocker = function (option, args) {
		return this.each(function () {
			var $this = $(this),
                data = $this.data('buttonLocker'),
                options = $.extend({}, $.fn.buttonLocker.defaults, $this.data(), typeof option == 'object' && option);

			if (!data) $this.data('buttonLocker', (data = new ButtonLocker(this, options)));
			if (typeof option == 'string')
				data[option].apply(data, [].concat(args));
		});
	};
	$.fn.buttonLocker.defaults = {
		click: null,
		params: {},	// These params passed to click function
		timeout: 300, // if null, false or 0 then plugin does not enable itself after timeout
		initCallback: null,
		debug: false,
	};

	$.fn.buttonLocker.Constructor = ButtonLocker;

}(jQuery));